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Biology
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24 May 2019

1. DNA, or the instructions for making proteins, is found within the _____ of the cell; while protein synthesis machinery is found in the _____ of the cell.

nucleus; cytoplasm

nucleolus; nucleus

cytoplasm;nucleus

nucleus; plasma membrane

2.During transcription, double stranded DNA is transcribed into a complementary molecule of

single-stranded DNA.

double-stranded DNA.

single-stranded mRNA.

single-stranded tRNA.

15. Place the following steps in the order in which they occur during gene expression.

mRNA is carried to ribosomes in the cytoplasm, DNA is transcribed into mRNA in the nucleus, mRNA is translated into polypeptides by tRNA

mRNA is carried to ribosomes in the cytoplasm, mRNA is translated into polypeptides by tRNA, DNA is transcribed into mRNA in the nucleus

DNA is transcribed into mRNA in the nucleus, mRNA is translated into polypeptides by tRNA, mRNA is carried to ribosomes in the cytoplasm

DNA is transcribed into mRNA in the nucleus, mRNA is carried to ribosomes in the cytoplasm, mRNA is translated into polypeptides by tRNA

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Patrina Schowalter
Patrina SchowalterLv2
26 May 2019
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Related questions

Gene expression is a multi-step process. Place these events in the correct order.

Question 13 options:

charged tRNA molecules read the next codon, entering the A site of the ribosome.

Translocation of the mRNA to the cytoplasm.

Recruitment of RNA polymerase.

tRNA(Met) binds to the start codon AUG in the P site of the ribosome.

Assembly of small and large ribosome subunits on the mRNA.

Processing of the primary RNA molecule.

Release factors recognize the stop codon, signaling the release of the protein, mRNA and ribosome subunits.

Synthesis of primary RNA molecule, a direct copy of the DNA template.

Recognition of the mRNA by the small ribosome subunit .

Peptidyl transferase, transfers the amino acid of the incoming tRNA to the growing peptide chain.

Binding of transcription factors to the promoter.

13

Which of the two major categories of the chemical reactions in photosynthesis is oxygen the INDIRECT product?

A

Glycolysis

B

Oxidative phosphorylation

C

Both light and dark

D

Light independent phase (LIP)

E

Light dependent phase (LDP)

14

You have a stomach flu characterized by vomiting. Which of the following systems is most responsible for the food in your stomach going the wrong way, e.g. vomiting? (Disregard this question and answer choice B)

A

Cardiac Muscle in the large intestine as discussed in class.

B

Smooth muscle in the gastrointestinal tract

C

Smooth muscle in the blood vessels

D

Skeletal muscle in the intestine

15

Proteins are made from which of the following smaller sub units?

A

Nucleotides

B

Amino acids that cannot enter the blood stream and go to cells

C

Monosaccharides

D

Fatty acids

E

Amino acids which can form new protein

16

Carbohydrates are digested in the gastrointestinal system into which of the following substances that is the smallest structure?

A

Polysaccharides that are produced by glucagon

B

Monosaccharides that are produced by insulin

C

Monosaccharides

D

Polysaccharide

17

Which of the following biomolecules has the longest digestion time? In other words, how long does it take for the biomolecule to be catabolized?

A

DNA

B

Lipid

C

Carbohydrate

D

Protein

18

You are sunburned after a long day at the beach. Which one is not an example of UV damage to your skin cells?

A

A mutation can occur in your ovaries

B

A mutation can occur in skin cell DNA that can lead to errors in transcription.

C

Errors can occur during DNA replication.

D

UV light can cause mutations in DNA of skins cells.

E

Thymine bases in your skin DNA bond with each other instead of across the double helix

19

This region, the ______________ (a) tells RNA polymerase where to bind to DNA while this region, the ______________ (b) tells RNA where to start transcription.

A

(a) promoter, (b) open reading frame

B

(a) start codon, (b) methionine

C

(a) promoter, (b) start site

D

(a) start site, (b) promoter

20

The genetic code is used to translate ______________ into ______________.

A

lipids, nucleotides

B

nucleotides,carbohydrates

C

nucleotides, lipids

D

nucleotides, amino acids

E

nucleosides, amino acids

21

Transcription of a gene has just completed. What are the next steps (in the correct order) to complete expression of that gene?

A

RNA polymerase makes a copy of DNA into mRNA.

B

mRNA is translated in the nucleus and ribosomal RNA moves into the cytoplasm.

C

Gene expression is completed after transcription.

D

mRNA moves into the cytoplasm and with tRNA they interact to form protein

E

Translation machinery moves into the nucleus and mRNA is translated into protein.

22

How is it that a mutation in DNA stored inside the nucleus of a cell can cause a disease affecting multiple organs?

A

This remains an unanswered question in science that scientists are still trying to figure out.

B

The mutated DNA is expressed in multiple cells through the process of transcription and translation, and the altered protein causes the disease wherever the DNA was expressed.

C

The mutated DNA is expressed in one cell and the altered protein travels to multiple organs to cause disease.

D

The mutated DNA is expressed and the mRNA takes the mutated information to other cells where the altered protein is made to cause disease in that organ.

23

The advantage of sickle cell anemia is which of the following?

A

It decreases the amount of oxygen in the blood cells so that mosquitoes carrying malaria will live

B

It decreases the amount of oxygen in the blood cells so that mosquitoe's blood form will die.

C

It allows the blood vessels to decrease the amount of blood going to the toes and feet.

D

There is none.

24

Which of the following is a purpose of cell division?

A

Cell reproduction

B

Growth

C

Repair

D

All of these

How can a cell remember which gene it needs to express (turn on)and which gene does from one generation to the next?

1.Methylation of cytosine bases

2.heritable chromatin structure

3.both of the above

4. none of the above

If you were to make 2 liters of a 2 molar solution of SodiumChloride (MW 58.4) How many grams of Sodium Chloride would youdissolve?

/1.58.4 /2.29.2 /3.116.8 /4.233.6

After transcription, nuclear RNA is capped, polyadenylated,spliced. After successful splicing, proteins are added to themature mRNA at the exon junction complex and then transported tothe cytoplasm. Which of the following is a NOT a reason why thesemodifications are added to

mRNA?

1.to identify the RNA molecule as mRNA

2.to stabilize mRNA molecule

3.to aid in transport from ribosome to cytoplasm throughpore

4.to signal to the cell that mRNA is ready for translation

A cell is being held in G1 phasedue to DNA damage caused by UV radiation. When the DNA is damaged,p53 is phorphorylated and precents entry into whatphase?

1.M phase 2. s-phase 3.G0 phase 4. none of the above

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