Multiple choice questions - cellular and molecular biology

Reference no: EM1390486

18. Proteins in the cytosol that are destined for other organelles must first enter the:
a. nucleus
b. Golgi apparatus
c. Endoplasmic reticulum
d. Lysosomes
19. Which of the following is true?
a. a special class of ribosomes embedded in the ER translates the proteins destined for that organelle
b. a common pool of ribosomes is used to synthesize both proteins that stay in the cytosol and those that are destined for the ER
c. all ribosomes are attached to the ER when they are synthesizing a protein
20. Which type of protein binds to improperly folded or improperly assembled proteins in the ER, holding them there until proper folding occurs?
a. tethering proteins
b. glycosylating proteins
c. chaperone proteins
d. antibody proteins
21. Which of the following is NOT true about the differences between liver cells and kidney cells in the same organism?
a. they contain the same genes, but express them differently
b. they contain different genes
c. they contain different sets of proteins
d.
22. The correct order of the "flow of information" to generate a protein is:
a. mRNA to DNA to protein
b. DNA to mRNA to protein
c. Lipid to mRNA to protein
23. In a eukaryotic cell, almost all _________________ occurs in the nucleus and __________________ occurs mainly at ribosomes in the cytoplasm. Fill in the blanks by picking from the following terms:
a. translation
b. transcription
24. A stop-transfer sequence functions to:
a. block transfer of a hydrophobic amino acid sequence into the lumen of the endoplasmic reticulum
b. prevent ribosomes from binding to the rough endoplasmic reticulum
c. signal the termination of mRNA
25. A highly expressed gene is more likely to be found in a(n)________________ region of the chromosome.
a. Heterochromatic
b. Euchromatic
26. The ___________ directs the ribosome with the attached mRNA and nascent polypeptide to the endoplasmic reticulum membrane.
a. tRNA
b. signal peptidase
c. SRP
d. SRP receptor
27. Which is NOT an example of epigenetic inheritance?
a. the inheritance of methylation patterns in DNA
b. the inheritance of a single nucleotide mutation in a gene
c. the inheritance of patterns of chromosome condensation

Reference no: EM1390486

Questions Cloud

Feedback mechanisms that maintain homeostasis : Review the feedback mechanisms that maintain homeostasis and what happens when these systems do not function appropriately. Give two specific examples for each.

How far up was the skiff does the arrow strike the apple : An apple is dropped from a 25m cliff. At the similar time, a person at the bottom of the cliff fries an arrow up towards the apple. The arrow sticks the apple 0.450 seconds later.

Seven spiritual values : The Japanese firm Matsushita has a business philosophy from the strong founder Konosuke. This business philosophy was codified as the "Seven Spiritual Values" of Matsushita that all employees learn today.

Hypothesis of the population average pulse rate : Conclude that the population average pulse rate is 71.8. Reject the hypothesis that the population average pulse rate is 70.

Multiple choice questions - cellular and molecular biology : Estimate which type of protein binds to improperly folded or improperly assembled proteins in the ER, holding them there until proper folding occurs?

What was the speed of bullet : An electric motor rotating a workshop grinding wheel at a rate of 81 rev/min is switched off. Suppose the wheel has a steady negative angular acceleration of magnitude 1.90 rad/s2.

Statistical measurements and graph : This problem has to do with graphical plotting and computation for certain distribution. Please mention a detailed response to the questions listed with appropriate graphical and statistical data representation(s).

Understand and predict the possible intercultural encounters : This assignment is to take into consideration doing business in China. You are an American company wanting to expand into China. Your management has asked you to do a PowerPoint presentation on the cultural orientation of China in order to underst..

What are the magnitude and direction of the tension : The three ropes are tied to a small, very light ring. Two of these ropes are anchored to walls at right angles with tensions T1 = 35 N andT2 = 70 N. What are the magnitude and direction of the tension Tvec3 in third rope.

User Account

All Pages