🏷️ LIMITED TIME OFFER: GET 20% OFF GRADE+ YEARLY SUBSCRIPTION →
Log in
Biology
2
answers
3
watching
1,274
views

1. Energy ______

cannot be produced by fungi and heterotrophicorganisms.

involves ATP in living organisms.

is the ability to do work.

usage is governed by the laws of thermodynamics.

all of these

2. Enzymes, which are usually _______, increase the rate of areaction by ______.

steroids; increasing the temperature of the substrates

carbohydrates; contributing electrons to the reaction

proteins; decreasing activation energy

lipids; changing the pH of the substrates

3. Why is adenosine triphosphate (ATP) important in cells?

It accelerates diffusion.

It stores energy in an easily accessible form that can be usedto do work.

It is assembled into long chains that make up cellmembranes.

It acts as an enzyme speeding up chemical reactions.

4. Why are enzymes important to humans?

Because they can evade the laws of thermodynamics.

Because they are proteins.

Because they allow reactions to occur at body temperature.

Because they increase body temperature.

Watch
2
answers
3
watching
1,274
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Unlock all answers

Get 1 free homework help answer.
Already have an account? Log in
Share
Sixta Kovacek
Sixta KovacekLv2
30 Sep 2019
Already have an account? Log in
Share

Related textbook solutions

Molecular Cell Biology
8 Edition,
Lodish
ISBN: 9781464183393
Biology: Science for Life with Physiology
6 Edition,
Belk
ISBN: 9780134555430
Biology
2nd Edition, 2013
Openstax
ISBN: 9781947172517
Concepts of Biology
OER Edition,
Openstax
ISBN: 9781938168116
Essentials of Biology
5 Edition,
Mader
ISBN: 9781259660269

Related questions

Question 1 When energy changes from one form to another, some of the energy that can be used to do work is always lost. The loss of this energy is mostly in the form of _________.
a. heat
b. potential energy
c. kinetic energy
d. light energy
e. mechanical energy

Question 2 Which of the following is exergonic?
a. binding fatty acids and glycerol molecules together to form lipids
b. building proteins from amino acids
c. binding sugars molecules together to form glycogen
d. breaking bonds in starch to release glucose
e. adding a phosphate group to ADP to form ATP

Question 3 The first law of thermodynamics states that:
a. energy can neither be created nor destroyed.
b. the universe is increasing in entropy.
c. all living organisms must eat to derive energy.
d. energy is required to bring molecules into a cell against a concentration gradient.
e. in energy-yielding reactions, matter goes from a more-ordered to a less-ordered state.

Question 4 Which of the following is true of energy?
a. It can be transferred from one form to another with 100 percent efficiency.
b. It can be created.
c. It can be stored in chemical bonds.
d. It can never be stored.
e. It can be released by forming chemical bonds.

Question 5 Metabolism is:
a. the sum of all the energy a cell uses.
b. the sum of all the vitamins a cell contains.
c. the sum of all the enzymes a cell contains.
d. the sum of all the chemical reactions that an organism carries out.
e. the sum of all the ATP a cell contains.

Question 6 Entropy is the measure of ________ in a system.
a. disorder
b. order
c. energy
d. work
e. heat

Question 7 What percentage of the energy stored in glucose are humans cells able to use to do useful work?
a. 37%
b. 100%
c. 15%
d. 52%
e. 48%

Question 8 What is activation energy?
a. the energy gained by living things, allowing them to remain active
b. the energy produced by the breakdown of ATP to ADP.
c. the energy required to initiate or begin a chemical reaction
d. the energy created by enzymes during exergonic reactions
e. the energy lost by living things in the form of heat

Question 9 Which of the following is true of allosteric enzymes?
a. Their activity can be reduced when the product binds the enzyme.
b. Their activity can be reduced when a coenzyme binds to them.
c. Their activity can be reduced when the substrate binds the enzyme.
d. Their activity can be increased when the product binds the enzyme.

Question 10 Which of the following is a true statement about enzymes?
a. They are made of proteins.
b. They are altered by the reactions they catalyze.
c. They increase the energy of activation of chemical reactions.
d. All of the above are true.
e. None of the above is true.

Question 11 What is the energy currency of cells?
a. ADP
b. enzymes
c. glucose
d. vitamins
e. ATP

Question 12 Kinetic energy is ____________, while potential energy is _____________.
a. stored energy; energy that is being used
b. stored energy; energy that can't be used
c. energy that is being used; stored energy
d. energy that can't be used; stored energy

Question 13 The energy released during ________ reactions can be used to drive ________ reactions, and this is called ________ reactions.
a. exergonic; endergonic; coupled
b. endergonic; exergonic; coupled
c. exergonic; endergonic; mutually dependent
d. coupled; mutually dependent; independent
e. endergonic; exergonic; mutually dependent

Question 14 ADP + P + Energy --> ATP Which of the following is a true statement about the chemical reaction above?
a. This is a coupled reaction.
b. This is an exergonic reaction.
c. The product of the reaction contains more energy than that of all of the reactants combined.
d. This is an endergonic reaction.
e. This is an example of a catabolic reaction.

What are the correct answers to the parts of this quiz marked incorrect? (that is my one question. Please take your time. I value accuracy over speed. )

IncorrectQuestion 2

0 / 1 pts
Studies done by Buchner showed that ground-up yeast cells were able to convert sugar to alcohol. The components of the mixture that were responsible for this transformation were

DNA molecules.


enzymes.


lipids.


carbohydrates.

Bloom's Level: 2. Understand
Learning Outcome: 06.01
Section: 06.01
Topic: History of Microbiology


IncorrectQuestion 3
0 / 1 pts
Bacteria that can absorb light energy and convert it into ATP are commonly called

cytochromes.


lysosomes.


chemotrophs.


phototrophs.


cytochromes AND chemotrophs.

Bloom's Level: 1. Remember
Learning Outcome: 06.02
Section: 06.01
Topic: Microbial Metabolism


IncorrectQuestion 4
0 / 1 pts
The readily usable energy currency of cells is

electricity.


the electron transport system.


ATP.


CTP.


the electron transport system AND CTP.

Bloom's Level: 1. Remember
Learning Outcome: 06.02
Section: 06.01
Topic: Microbial Metabolism


IncorrectQuestion 5
0 / 1 pts
NAD in its reduced form is symbolized as

NADH.


NAD.


NAD-.

NADP.

Bloom's Level: 1. Remember
Learning Outcome: 06.03
Section: 06.01
Topic: Microbial Metabolism


IncorrectQuestion 6
0 / 1 pts
The most common starting pathway for the breakdown of sugars is

respiration.


fermentation.


glycolysis.


oxidation.

Bloom's Level: 2. Understand
Learning Outcome: 06.04
Section: 06.01
Topic: Microbial Metabolism


IncorrectQuestion 7
0 / 1 pts
Which of the following processes generates the greatest amount of energy?

fermentation


aerobic respiration


the Entner-Duodoroff pathway


glycolysis


fermentation AND the Entner-Duodoroff pathway

Bloom's Level: 2. Understand
Learning Outcome: 06.05
Section: 06.01
Topic: Microbial Metabolism


IncorrectQuestion 8
0 / 1 pts
Fermentation

uses an inorganic molecule as the final electron acceptor.


uses an organic molecule as the final electron acceptor.


results in the production of a large amount of ATP.


is necessary in some organisms to produce reduced electron carriers.


uses an organic molecule as the final electron acceptor AND is necessary in some organisms to produce reduced electron carriers.

Bloom's Level: 2. Understand
Learning Outcome: 06.05
Section: 06.01
Topic: Microbial Metabolism


IncorrectQuestion 9
0 / 1 pts
The use of the suffix "ase" on a word denotes a(n)

substrate.


product.


enzyme.


electron acceptor.


substrate AND electron acceptor.

Bloom's Level: 1. Remember
Learning Outcome: 06.06
Section: 06.02
Topic: Microbial Metabolism


IncorrectQuestion 10
0 / 1 pts
Enzymes speed up reactions by

raising activation energy.


producing heat.


reducing entropy.


lowering activation energy.


raising activation energy AND reducing entropy.

Bloom's Level: 2. Understand
Learning Outcome: 06.06
Section: 06.02
Topic: Microbial Metabolism


IncorrectQuestion 11
0 / 1 pts
Most enzymes

are generalists and typically recognize a number of different substrates.


are specialists and typically recognize a single substrate.


are active over a wide pH range.


have several active sites.


are generalists and typically recognize a number of different substrates AND have several active sites.

Bloom's Level: 2. Understand
Learning Outcome: 06.06
Section: 06.02
Topic: Microbial Metabolism


IncorrectQuestion 12
0 / 1 pts
Allosteric enzymes

may bind two substrates.


are used to bind to other enzymes.


have an additional binding site that is involved in regulating enzyme activity.

are twice as fast as single site enzymes.


may bind two substrates AND are twice as fast as single site enzymes.

Bloom's Level: 2. Understand
Learning Outcome: 06.09
Section: 06.02
Topic: Microbial Metabolism


Question 13
1 / 1 pts
Feedback inhibition

is a means of regulating the amount of product produced.


often involves the use of allosteric enzymes.


involves inhibiting the last of a series of reactions.


results in raising the activation energy for the reaction.


is a means of regulating the amount of product produced AND often involves the use of allosteric enzymes.

Bloom's Level: 2. Understand
Learning Outcome: 06.10
Section: 06.02
Topic: Microbial Metabolism


IncorrectQuestion 14
0 / 1 pts
Coenzymes are derivatives of

minerals.


proteins.


lipids.


vitamins.

Bloom's Level: 1. Remember
Learning Outcome: 06.07
Section: 06.02
Topic: Microbial Metabolism


Question 15
1 / 1 pts
Environmental factors that may affect enzyme activity include

temperature


pH


salt


age


temperature, pH AND salt

Bloom's Level: 2. Understand
Learning Outcome: 06.08
Section: 06.02
Topic: Microbial Metabolism


Question 16
1 / 1 pts
Most enzymes function best at

acidic pH and high salt concentrations.


basic pH and low salt concentrations.


neutral pH and high salt concentrations.


slightly above pH 7 and low salt concentrations.

Bloom's Level: 2. Understand
Learning Outcome: 06.08
Section: 06.02
Topic: Microbial Metabolism


Question 17
1 / 1 pts
Mercury in mercurochrome inhibits growth

through competitive inhibition.


through a reversible action.


by oxidizing the sulfhydryl groups in cysteine.


by changing the shape of proteins.


by oxidizing the sulfhydryl groups in cysteine AND by changing the shape of proteins.

Bloom's Level: 3. Apply
Learning Outcome: 06.10
Section: 06.02
Topic: Microbial Metabolism


IncorrectQuestion 18
0 / 1 pts
The term precursor metabolite refers to molecules that

activate cell components.


are used in biosynthesis.


result from cell activities.


are present but inactive.

Bloom's Level: 2. Understand
Learning Outcome: 06.11
Section: 06.03
Topic: Microbial Metabolism


IncorrectQuestion 19
0 / 1 pts
Glycolysis

requires oxygen.


produces 3 ATP molecules.


produces 4 molecules of NAD.


may occur under aerobic or anaerobic conditions.


produces 3 ATP molecules AND produces 4 molecules of NAD.

Bloom's Level: 2. Understand
Learning Outcome: 06.12
Section: 06.03
Topic: Microbial Metabolism


IncorrectQuestion 20
0 / 1 pts
The transition step

links glycolysis to the pentose phosphate pathway.


links the pentose phosphate pathway to the Entner-Duodoroff pathway.


links glycolysis to the TCA cycle.


takes place in the matrix of the nucleus.

Bloom's Level: 1. Remember
Learning Outcome: 06.11
Section: 06.03
Topic: Microbial Metabolism


Question 21
1 / 1 pts
The TCA cycle produces

ATP through substrate-level phosphorylation.


NADH.


FADH2.

precursor metabolites.


All of the choices are correct.

Bloom's Level: 1. Remember
Learning Outcome: 06.12
Section: 06.03
Topic: Microbial Metabolism


Question 22
1 / 1 pts
The electron transport system

requires a membrane.


utilizes the nuclear membrane of eukaryotes.


utilizes the mitochondrial membrane of prokaryotes.


generates a concentration gradient of protons.


requires a membrane AND generates a concentration gradient of protons.

Bloom's Level: 2. Understand
Learning Outcome: 06.13
Section: 06.04
Topic: Microbial Metabolism


IncorrectQuestion 23
0 / 1 pts
Which type of phosphorylation does not require a membrane?

Substrate-level phosphorylation


Oxidative phosphorylation


Photophosphorylation


All types of phosphorylation require a membrane.

Bloom's Level: 2. Understand
Learning Outcome: 06.13
Section: 06.04
Topic: Microbial Metabolism


Question 24
1 / 1 pts
Which pairing is incorrect?

A:T


G:C


A:U


A:G

Bloom's Level: 3. Apply
Learning Outcome: 07.01
Section: 07.01
Topic: Genetics


Question 25
1 / 1 pts
RNA is characterized by which one of the following features?

Deoxyribose.


Thymine.


Ribose.


Double-stranded.

Bloom's Level: 1. Remember
Learning Outcome: 07.01
Section: 07.01
Topic: Genetics


Question 26
1 / 1 pts
DNA is characterized by which of the following feature(s)?

Ribose.


Single-stranded.


Deoxyribose.


Thymine.


Deoxyribose AND thymine.

Bloom's Level: 1. Remember
Learning Outcome: 07.01
Section: 07.01
Topic: Genetics


Question 27
1 / 1 pts
Which of the following is/are true of DNA replication?

It starts at the origin of replication.


Nucleotides are added to the 3' end.


It requires an RNA primer to get started.


It utilizes polymerases.


All of the choices are true.

Bloom's Level: 2. Understand
Learning Outcome: 07.03
Section: 07.02
Topic: Genetics


Question 28
1 / 1 pts
Which is true about the RNA transcript?

It is formed using the DNA minus strand as a template.


It has the same 5'-3' orientation as the DNA positive strand.


It is made in short fragments that are then stitched together.


The template starts at the promoter region.


It is formed using the DNA minus strand as a template, it has the same 5'-3' orientation as the DNA positive strand AND the template starts at the promoter region.

Bloom's Level: 2. Understand
Learning Outcome: 07.04
Section: 07.03
Topic: Genetics


IncorrectQuestion 29
0 / 1 pts
How many nucleotides are in a codon?

1


2


3


4


5

Bloom's Level: 1. Remember
Learning Outcome: 07.05
Section: 07.03
Topic: Genetics


Question 30
1 / 1 pts
Which may be or is an RNA molecule?

AGCCTAC


GGGCCCA


GCCCUUA


AGCCTAC AND GGGCCCA


GGGCCCA AND GCCCUUA

Bloom's Level: 2. Understand
Learning Outcome: 07.01
Section: 07.01
Topic: Genetics


IncorrectQuestion 31
0 / 1 pts
Which molecule carries an anticodon?

DNA


mRNA


rRNA


tRNA

Bloom's Level: 1. Remember
Learning Outcome: 07.05
Section: 07.03
Topic: Genetics


Question 32
1 / 1 pts
AUG

is only used as the start codon.


codes for methionine.


determines the reading frame.


is one of the stop codons.


codes for methionine AND determines the reading frame.

Bloom's Level: 2. Understand
Learning Outcome: 07.05
Section: 07.03
Topic: Genetics


IncorrectQuestion 33
0 / 1 pts
The A-site

is found on the RNA polymerase enzyme.


is found on the 30S ribosome.


is found on the 70S ribosome.


is the amino acid site.


is found on the 70S ribosome AND is the amino acid site.

Bloom's Level: 1. Remember
Learning Outcome: 07.05
Section: 07.03
Topic: Genetics


IncorrectQuestion 34
0 / 1 pts
A stop codon

codes for the stop amino acid s-methyl-methionine.


forms a hairpin loop forcing the ribosome to fall off.


codes for no amino acid.


enhances the binding of the e-polymerase.


codes for the stop amino acid s-methyl-methionine AND forms a hairpin loop forcing the ribosome to fall off.

Bloom's Level: 2. Understand
Learning Outcome: 07.05
Section: 07.03
Topic: Genetics


IncorrectQuestion 35
0 / 1 pts
Some segments of the precursor mRNA in eukaryotes are non-coding and are called

exons.


introns.


integrans.


uselessans.

Bloom's Level: 1. Remember
Learning Outcome: 07.06
Section: 07.04
Topic: Genetics


Question 36
1 / 1 pts
Gene regulation may entail

turning on genes only when needed.


turning off genes when not needed.


turning on or off entire groups of genes.


All of the choices are correct.

Bloom's Level: 2. Understand
Learning Outcome: 07.09
Section: 07.06
Topic: Genetics


IncorrectQuestion 37
0 / 1 pts
The set of genes in bacteria that are linked together and transcribed as a single unit is referred to as a(n)

operon.


regulon.


operator.


repressor.

Bloom's Level: 1. Remember
Learning Outcome: 07.09
Section: 07.06
Topic: Genetics


Question 38
1 / 1 pts
The molecules that bind to a repressor and cause it to no longer bind to the operator are called

activators.


repressors.


introns.


inducers.

Bloom's Level: 2. Understand
Learning Outcome: 07.09
Section: 07.06
Topic: Genetics


Question 39
1 / 1 pts
Repressors

are involved in negative control.


are involved in positive control.


always bind to the promoter.


bind or do not bind to the operator depending on their shape (conformation).

are involved in negative control AND bind or do not bind to the operator depending on their shape (conformation).

Bloom's Level: 2. Understand
Learning Outcome: 07.09
Section: 07.06
Topic: Genetics


Question 40
1 / 1 pts
Activators

are involved in negative control.


are involved in positive control.


always bind to the promoter.


are allosteric proteins.


are involved in positive control AND are allosteric proteins.

Bloom's Level: 2. Understand
Learning Outcome: 07.09
Section: 07.06
Topic: Genetics


Question 41
1 / 1 pts
Signal transduction

is the relay of information about conditions outside a cell to inside the cell.

often relies on a two component system.


may involve phosphorylation of various molecules.


is used by certain pathogens to sense low magnesium conditions.


All of the choices are correct.

Bloom's Level: 2. Understand
Learning Outcome: 07.07
Section: 07.05
Topic: Genetics


IncorrectQuestion 42
0 / 1 pts

Quorum sensing


is used by bacteria to sense the density of cells.


is used by bacteria to sense the proximity of eukaryotic cells


is used by bacteria to limit the density of cells.


is used by eukaryotes to sense the presence of bacteria.


does not influence the expression of genes by a bacteria.

Quorum sensingBloom's Level: 2. UnderstandLearning Outcome: 07.07Section: 07.05Topic: Genetics


Question 43
1 / 1 pts
In DNA sequence analysis

the + strand of DNA is used.


the start codon is ATG.


ORFs are searched for.


codon usage is a helpful indicator for protein coding areas.


All of the choices are correct.

Bloom's Level: 2. Understand
Learning Outcome: 07.12
Section: 07.08
Topic: Genetics


IncorrectQuestion 44
0 / 1 pts
DNA replication is usually unidirectional.

True


False

Bloom's Level: 2. Understand
Learning Outcome: 07.03
Section: 07.02
Topic: Genetics


IncorrectQuestion 45
0 / 1 pts
There are 4 functional types of RNA.

True


False

Bloom's Level: 1. Remember
Learning Outcome: 07.04
Section: 07.03
Topic: Genetics


Question 46
1 / 1 pts
Antisense RNA is the complement of the plus strand and may be useful in inhibiting translation.

True


False

Bloom's Level: 2. Understand
Learning Outcome: 07.11
Section: 07.07
Topic: Genetics


IncorrectQuestion 47
0 / 1 pts
A drug that inhibits the activity of bacterial DNA gyrase ______ be a good antibiotic because _______.

would; it would inhibit all DNA synthesis


would NOT; it would inhibit all DNA synthesis, even our own cell's DNA synthesis

would; it would selectively inhibit bacterial DNA synthesis due to differences between bacterial/human gyrase

would NOT; the DNA replication machinery could still function, even with impaired DNA gyrase enzyme

Bloom's Level: 5. Evaluate
Learning Outcome: 07.03
Section: 07.02
Topic: Genetics


IncorrectQuestion 48
0 / 1 pts
The regulatory protein

binds to the promoter region of DNA.


may inhibit or enhance transcription.


may control translation of the operon.


affects the activity of the DNA polymerase.


binds to the promoter region of DNA AND affects the activity of the DNA polymerase.

Bloom's Level: 2. Understand
Learning Outcome: 07.09
Section: 07.06
Topic: Genetics


Question 49
1 / 1 pts
The source of variation among microorganisms that were once identical is

antibiotic resistance.


virulence factors.


sigma factors.


mutation.

Bloom's Level: 1. Remember
Learning Outcome: 08.02
Section: 08.01
Topic: Genetics


Question 50
1 / 1 pts
The characteristics displayed by an organism in any given environment is its

genotype.


archaetype.


mutatotype.


phenotype.

Bloom's Level: 2. Understand
Learning Outcome: 08.01
Section: 08.01
Topic: Genetics


Question 51
1 / 1 pts
Transposons

are informally known as jumping genes.


may cause insertion mutations.


may cause knockout mutations.


were first recognized in plants.


All of the choices are correct.

Bloom's Level: 2. Understand
Learning Outcome: 08.05
Section: 08.02
Topic: Genetics


Question 52
1 / 1 pts
The largest group of chemical mutagens consists of

radiation.


base analogs.


nitrous acid.


alkylating agents.

Bloom's Level: 1. Remember
Learning Outcome: 08.06
Section: 08.03
Topic: Genetics


Question 53
1 / 1 pts
Nitrous acid most frequently causes mutations by

substituting oxygen for hydrogen bonds.


converting keto groups to amino groups.


altering the bonding ratios of nitrogen bases.


converting cytosine to uracil.

Bloom's Level: 2. Understand
Learning Outcome: 08.06
Section: 08.03
Topic: Genetics


IncorrectQuestion 54
0 / 1 pts
Chemical mutagens that mimic the naturally occurring bases are called

nitrogen mustards.


alkylating agents.


base analogs.


nitrous oxide.

Bloom's Level: 1. Remember
Learning Outcome: 08.06
Section: 08.03
Topic: Genetics


IncorrectQuestion 55
0 / 1 pts
Irradiation of cells with ultraviolet light may cause

4 nucleotides to covalently bind together.


thymine dimers.


adenine complementary base pairing with cytosine.


the addition of uracil.

Bloom's Level: 2. Understand
Learning Outcome: 08.08
Section: 08.03
Topic: Genetics


Question 56
1 / 1 pts
Thymine dimers are dealt with by

no repair mechanisms.


photoreactivation repair.


SOS repair.


excision repair.


photoreactivation repair AND excision repair.

Bloom's Level: 2. Understand
Learning Outcome: 08.11
Section: 08.04
Topic: Genetics


IncorrectQuestion 57
0 / 1 pts
X-rays

have no effect on DNA.


cause thymine trimers.


cause single and double strand breaks in DNA molecules.


make the DNA radioactive.

Bloom's Level: 1. Remember
Learning Outcome: 08.08
Section: 08.03
Topic: Genetics


IncorrectQuestion 58
0 / 1 pts
DNA repair mechanisms occur

only in prokaryotes.


only in eukaryotes.


in both eukaryotes and prokaryotes.


in neither eukaryotes or prokaryotes.

Bloom's Level: 1. Remember
Learning Outcome: 08.09
Section: 08.04
Topic: Genetics


IncorrectQuestion 59
0 / 1 pts
Antibiotics

cause mutations to occur.


may act as alkylating mutagens.


provide an environment in which pre-existing mutants survive.


increase the rate of spontaneous mutation.

Bloom's Level: 2. Understand
Learning Outcome: 08.12
Section: 08.05
Topic: Genetics


IncorrectQuestion 60
0 / 1 pts
Prokaryotic cell mutations can be observed very quickly because the prokaryotic chromosome is

diploid.


polyploid.


haploid.


polysomal.

Bloom's Level: 2. Understand
Learning Outcome: 08.02
Section: 08.01
Topic: Genetics


Question 61
1 / 1 pts
The diploid character of eukaryotic cells may mask the appearance of a mutation since

this may be a frame shift.


the mutation is often reversible.


the mutation may be palindromic.


the matching chromosome may carry the dominant gene.

Bloom's Level: 2. Understand
Learning Outcome: 08.02
Section: 08.01
Topic: Genetics


IncorrectQuestion 62
0 / 1 pts
A clever technique that streamlines the identification of auxotrophic mutants is

gas chromatography.


replica plating.


direct selection.


reversion.

Bloom's Level: 2. Understand
Learning Outcome: 08.12
Section: 08.05
Topic: Genetics


IncorrectQuestion 63
0 / 1 pts
To increase the proportion of mutants in a population of bacteria one may use

direct selection.


replica plating.


penicillin enrichment.


individual transfer.

Bloom's Level: 2. Understand
Learning Outcome: 08.12
Section: 08.05
Topic: Genetics


Question 64
1 / 1 pts
Bacteria that have properties of both the donor and recipient cells are the result of

UV light.


SOS repair.


frame shift mutations.


genetic recombination.

Bloom's Level: 2. Understand
Learning Outcome: 08.13
Section: 08.06
Topic: Genetics


IncorrectQuestion 65
0 / 1 pts
The mechanism by which genes are transferred into bacteria via viruses is called

ellipsis.


replica plating.


transformation.


transduction.


conjugation.

Bloom's Level: 1. Remember
Learning Outcome: 08.14
Section: 08.07
Topic: Genetics


IncorrectQuestion 66
0 / 1 pts
In conjugation the donor cell is recognized by the presence of

an F plasmid.


a Y chromosome.


diploid chromosomes.


an SOS response.


an F plasmid AND diploid chromosomes.

Bloom's Level: 2. Understand
Learning Outcome: 08.15
Section: 08.08
Topic: Genetics


IncorrectQuestion 67
0 / 1 pts
Gene transfer that requires cell-to-cell contact is

transformation.


competency.


conjugation.


functional genomics.

Bloom's Level: 2. Understand
Learning Outcome: 08.15
Section: 08.08
Topic: Genetics


Question 68
1 / 1 pts
The transfer of vancomycin resistance from Enterococcus faecalis to Staphylococcus aureus is thought to have involved

conjugation.


transformation.


transduction.


transposons.


conjugation AND transposons.

Bloom's Level: 2. Understand
Learning Outcome: 08.17
Section: 08.09
Topic: Genetics


IncorrectQuestion 69
0 / 1 pts
Double-stranded DNA enters the recipient cell during transformation.

True


False

Bloom's Level: 2. Understand
Learning Outcome: 08.13
Section: 08.06
Topic: Genetics


Question 70
1 / 1 pts
Plasmids often carry the information for antibiotic resistance.

True


False

Bloom's Level: 2. Understand
Learning Outcome: 08.16
Section: 08.09
Topic: Genetics

Quiz Score: 31 out of 70

I have this questions for my homework i need help with them look please it is important i need help so please give me the correct answers for each question and also please be clear to understand and aslo be correct it is very important becuase i need them so i really need the right answers. please help me and be correct and clear it is important ok

Question 5

At a constant temperature, if you increase the number of unsaturated fatty acid chains in the phospholipid, the membrane will become......

less fluid
more fluid
fluidity will be unchanged

Question 6

Bacteria in a hot spring at 80 degrees celsius would be expected to have ______________ in their cell membrane

high proportions of saturated phospholipids
high proportions of unsaturated phospholipids
an equal ratio of saturated to unsaturated phospholipid

Question 7

Membrane proteins have an important role in membrane fluidity

True
False

Question 8

The HIV virus can't attach to cells that have a mutation in the CCR5 gene and so such individuals are resistant to HIV. What population of people have a higher incidence of the mutant CCR5 gene and why?

europeans because their ancestors survived the bubonic plague
North Americans because their ancestors survived small pox
europeans because they have a longer evolutionary past with HIV
Africans because they have a longer evolutionary past with HIV

Question 9

Nematode trapping fungi have ______________ molecules called ______________ that recognize specific carbohydrates on the surface of the nematode worms. This is how a fungus can recognize that its prey, the nematode worm, has wriggled into the loop. Write two words on lowercase separated by a space with no other syntax

Question 10

Diffusion requires energy

True
False

Question 11

The net direction of molecule movement when molecules diffuse is

down their concentration gradient
random directions

Question 12

In osmosis, water molecules from a solution of higher solute concentration cross a semi-permeable membrane into a solution of lower solute concentration?

True
False

Question 13

Which best defines osmosis?

In osmosis, water from a solution of lower solute concentration move across a semi-permeable membrane into a solution of higher solute concentration?
In osmosis, water from a solution of higher solute concentration move across a semi-permeable membrane into a solution of lower solute concentration?

Question 14

Animal cells placed into a hypotonic solution would most likely?

lyse (burst)
shrink
remain unchanged in size

Question 15

Glucose and amino acids move into cells via carrier proteins, the same protein can move glucose or amino acids

True
False

Question 16

ATP powered pumps move substances into and out of cells by diffusion?

True
False

Question 17

For every 3 Na ions moved out, 2 K ions are moved into a cell by one cycle of the sodium-potassium pump.

True
False

Question 18

Bulk transport of fluid and any of the substances within that fluid is called

pinocytosis
phagocytosis
receptor-mediated endocytosis
exocytosis

Weekly leaderboard

Home
Homework Help 3,900,000
Biology 460,000
Start filling in the gaps now
Log in