BIOL 1001 : Bio Quiz 9

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azuremammoth471

15 Mar 2019

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Choose one answer: guanines, thymines, purines, pyrimidines, adenines, cytosines, adenines, guanines. Choose one answer: phosphate groups and sugar molecules, nitrogenous bases and sugar molecules, amounts of adenine and guanine. A portion of dna has the sequence 3" ttgacgc 5". The sequence of rna that is transcribed from this sequence is. Choose one answer: 5"gcgucaa3, 3"gcgucaa5, 3"uucagcg5, 5"aaugcg 3" Choose one answer: both transcription and translation require the cell to expend energy, transcription takes place in the cytoplasm of a eukaryote, transfer rna contributes to the process of translation, dna codes for messenger, ribosomal, and transfer rna. A nucleotide that has been incorporated into the middle of a strand of dna has __________ phosphate(s) attached to it. http://moodle. lsu. edu/mod/quiz/attempt. php?id=484591. Choose one answer: occurs only in eukaryotic cells, takes place on ribosomes, can only produce messenger rna molecules, builds an rna strand in the 5" to 3" direction.

Related Questions

1. Unlike DNA, RNA contains

deoxyribose

a double strand

phosphates

uracil

Nucleic acid structure

2. In transcription, uracil will bond with:

thymine

cytosine

adenine

guanine

Transcription

3. The first team of scientist to document the structure of DNA was:

Franklin and Wilkins

Watson and Crick

Pauling and Chargoff

None of the above

DNA structure

4. Organelles that synthesize protein are:

lysosomes

ribosomes

endoplasmic reticulum

golgi bodies

5. Most of the time in a cell's life, it's DNA is in the form of:

Chromatin

Chromatids

Replicated chromosomes

Spindle fibers

6. Uracil is a nitrogen base that pairs with adenine. Using this information, one could conclude that uracil is a:

Purine

Pyrimidine

Neither a purine or pyrimidine

Not enough information

7. a nucleotide does not consist of a:

polymerase

5-carbon sugar

phosphate group

nitrogen base

8. The genetic code in DNA of an individual depends on the sequence (order) of:

nucleotides

purines only

phosphates

sugars

9. Before a cell divides, it must duplicate its DNA in a process known as:

translation

transformation

transcription

replication

10. The basic unit (building block) of a protein is a (an):

carbohydrate

amino acid

lipid

hydrogen bond

11. Unlike DNA, RNA contains:

deoxyribose

a double strand

phosphates

uracil

12. The structure of DNA was first documented in:

1945

1953

1956

1962

13. In DNA replication, the new molecules produced are:

of unequal length

both assembled in the same direction

built with purines as the backbone

assembled in opposite directions

DNA replication

14. The "backbone" of DNA is composed of:

ribose and phosphates

deoxyribose and phosphates

ribose and uracil

deoxyribose and thymine

DNA structure

15. RNA differs from DNA in which of the following ways?

RNA is single-stranded

RNA contains ribose

RNA does not contain thymine

All of the above

DNA structure

16. Which of the following is NOT required for the transcription process itself?

RNA polymerase

DNA

uracil-containing nucleotides

ribosomes

skyhamster121

2. Inductive reasoning in science:

a) is often part of the discovery process

b) proceeds from specific observations to general conclusions

c) is complementary to deductive reasoning

d) often relies on descriptive science

e) all of the above

3. A proton is a subatomic particle with:

a) a negative charge and an atomic mass of 1

b) a negative charge and a negligible mass

c) a positive charge and an atomic mass of 1

d) no charge and an atomic mass of 1

e) no charge and a negligible mass

4. Nonpolar covalent bonds are formed when:

a) electrons are shared equally by atoms

b) electrons are shared unequally by atoms

c) electrons are transferred completely from one atom to another

d) two atoms both lose electrons

e) a negative pole of one atom is attracted to a positive pole of another atom

5. Hydrogen bonds are formed when:

a) electrons are shared equally by atoms

b) electrons are shared unequally by atoms

c) electrons are transferred completely from one atom to another

d) two atoms both lose electrons

e) a negative end of one molecule is attracted to a positive end of another molecule

6. Compared with a solution of pH = 4, a solution with pH = 6 is:

a) 2 times less acidic

b) 10 times more acidic

c) 100 times more acidic

d) 10 times less acidic

e) 100 times less acidic

7. Nucleotides are formed from:

a) 3 fatty acids and a glycerol

b) 3 monosaccharides and a glycerol

c) a fatty acid, a pentose sugar, and 1 or more phosphate groups

d) a nitrogenous base, a pentose sugar, and 1 or more phosphate groups

e) an amino acid, a pentose sugar, and 1 or more phosphate groups

8. Which nucleotide base is found in RNA, but not in DNA?

a) adenine

b) cytosine

c) guanine

d) thymine

e) uracil

9. The correct sequence for the levels in the taxonomic hierarchy is:

a) domain â class â order â kingdom â phylum â genus â family â species

b) kingdom â domain â class â phylum â order â family â genus â species

c) domain â kingdom â phylum â class â order â family â genus â species

d) domain â kingdom â phylum â class â order â genus â family â species

e) phylum â kingdom â domain â order â class â genus â family â species

10. The outer (valence) shell of an atom can hold a maximum of:

a) 4 electrons

b) 6 electrons

c) 8 electrons

d) 12 electrons

e) 18 electrons

11. Which of the following is not true of lipids?

a) they are a diverse group of biological molecules

b) they are hydrophobic

c) they are less oxidized than carbohydrates

d) they are strongly polar

e) they can store more energy than carbohydrates

coralcattle151

QUESTION 1

A mutation caused by exposure to gamma rays is called a spontaneous mutation

	a.	True
	b.	False
	c.	Sometimes, depending on the type of base change
	d.	Gamma rays do not cause mutations

QUESTION 2

A recessive mutation affecting an essential biochemical pathway can be detected________

	a.	when the organism is heterozygous for that mutation.
	b.	when the organism is homozygous for that mutation.
	c.	in either homozygous or heterozygous conditions.
	d.	only by sequencing (recessive mutations never show a phenotype).

QUESTION 3

During DNA replication, the newly synthesized chain grows by adding

	a.	nitrogenous bases
	b.	the sugar-phosphate backbone
	c.	nucleosides
	d.	dNTPs

QUESTION 4

During replication, the DNA strand 5â- AAGTCTAGCCTAG -3â will serve as a template for the polymerization of:

	a.	5â- CTAGGCTAGACTT -3â
	b.	5â - TTCAGATCGGATC -3â
	c.	5â - GATCCGATCTGAA -3â
	d.	3â - AAGTCTAGCCTAG -5â

QUESTIOn 5

Given the following DNA sequences, select which statement(s) is(are) correct.

Sequence 1:

5â-TGGACGCTAA-3â

3â-ACCTGCGATT-5â

Sequence 2:

5â-AATCGCAGGT-3â

3â-TTAGCGTCCA-5â

Sequence 3:

5â-ACCTGCGATT-3â

3â-TGGACGCTAA-5â

	a.	Sequences 1 and 2 are the same
	b.	Sequences 1 and 3 are the same
	c.	Sequences 2 and 3 are the same
	d.	Sequences 1, 2 and 3 are all different

QUESTION 6

Repetitive sequences in the genome are hotspots for:

	a.	Deamination
	b.	Depurination
	c.	Thymine dimer formation
	d.	Replication errors

QUESTION 7

Select which statement(s) about the Ames test is(are) correct

	a.	it has been designed to understand mutation repair systems in Salmonella typhimurium
	b.	it uses mammalian liver extract
	c.	it allows to study whether chemical compounds or their enzymatic breakdown products are mutagenic
	d.	it is based on whether a chemical compound causes reversion mutations from his+ to his-
	e.	two of the above are correct
	f.	three of the above are correct

QUESTION 8

Select which statement(s) is(are) correct.

	a.	All DNA strands have a direction, and it is specified by the carbons in the sugar backbone.
	b.	All DNA strands have a direction, and it is specified by hydrogen bonds between nucleotides.
	c.	In order to form proper base pairs in a double stranded DNA molecule, the two strands must run in opposite directions.
	d.	A and C are correct.
	e.	B and C are correct.

QUESTION 9

Studies of gene mutation frequencies have shown that:

	a.	mutations are rare, and genomes are generally stable.
	b.	mutation frequencies differ among organisms and also between genes, suggesting certain genes are more susceptible to mutation.
	c.	mutation frequencies are consistent between organisms, and each region of DNA is equally susceptible to random mutations.
	d.	Both A and B are correct.
	e.	Both A and C are correct.

QUESTION 10

The compound 5-bromodeoxyuridine (BrdU) is a derivative of uracil, and if BrdU becomes incorporated during DNA replication, it pairs with adenine. This compound is best classified as which type of mutagen?

	a.	base analog
	b.	base inducer
	c.	intercalating agent
	d.	oxidative agent
	e.	alkylating agent

QUESTION 11

The rate of mutation of the fruit fly is higher than the rate of mutation of Algae

True

False

QUESTION 12

Thymine dimers are most commonly caused by which of the following?

	a.	X-rays
	b.	Alkylating agents
	c.	U.V. irradiation
	d.	DNA intercalating agents

QUESTION 13

What chemical group is found in the 3â end of a DNA strand?

	a.	an alcohol
	b.	a hydroxyl
	c.	a methyl
	d.	a phosphate

QUESTION 14

What chemical group is found in the 5â end of a DNA strand?

	a.	an alcohol
	b.	a hydroxyl
	c.	a methyl
	d.	a phosphate

QUESTION 15

Which is the correct order of molecules binding to DNA during DNA replication?

	a.	Helicase, SSB, primase, DNA pol III, DNA pol I, ligase
	b.	SSB, DNA pol I, ligase, helicase, DNA pol I, primase
	c.	primase, helicase, DNA pol III, ligase, DNA pol I, SSB
	d.	SSB, helicase, primase, DNA pol III, DNA pol I, ligase

QUESTION 16

Which statement(s) is(are) correct about strand slippage?

	a.	It can cause disorders such as Huntingon disease.
	b.	It is a process that causes mutations altering the number of DNA repeats.
	c.	It is a process that incorporates nucleotide base analogs and trinucleotide repeats.
	d.	a and b are correct.
	e.	b and c are correct.
	f.	a, b and c are correct.

help needed asap.

chocolatesea-lion434

BIOL 1001 : Bio Quiz 9

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