Reference no: EM133934346

Question

1. What is the significance of the configuration between A and B

a) Bs configuration allows for the better packing of the chromatin

b) A is a centromere and so remains condensed

c) As configuration will not allow transcriptions

d) B is a polysome and will be able to make more proteins faster

e) Bs configuration provides a means for translation to occur

2. Your research team is using a new type of labeled T nucleotide which allows you to track when they are incorporated into newly forming DNA. Introducing these fancy nucleotides into a culture of dividing human cells at specific times would allow the answer to which questions?

a) How many picograms of DNA are made per cell cycle?

b) How many cells are produced by the culture per hour?

c) What is the length of the 5 phases of the cell cycle?

d) When do spindle fibers attach to chromosomes?

e) When are the 5 chromosomes synthesized?

3. Imagine that you have become an expert at moving DNA sequences within a prokaryotic genome. If you moved the operator to a position upstream from the promoter, what would you expect to occur?

a) The repressor will bind to the promoter.

b) The lac operon will be expressed continuously.

c) The repressor will not be able to bind to the operator.

d) The lac operon will function normally.

e) The repressor will no longer be made.

4. What causes different sets of proteins to be expressed in a nerve and a skin cell of some individuals?

a) Different regulatory sequences

b) Different promoters

c) Different RNA

d) Different sets of regulatory proteins

e) Different genes

5. We know that the genetic code is essentially the same for all organisms. As such, which of the following would be a logical assumption?

a) Different organisms have different numbers of different types of amino acids.

b) DNA was the first genetic material.

c) All organisms have experienced convergent evolution.

d) The same codons in different organisms translate into different amino acids.

e) A gene from an organism can theoretically by any other organism.

6. If a newly made polypeptide is to be secreted from the cell, what must occur?

a) It has a signal sequence that targets it to the cell's plasma membrane where it causes exocytosis.

b) Its signal sequence causes it to be encased in a vesicle as soon as it is translated.

c) It must be translated by a ribosome that remains free of attachment to the ER.

d) Its signal sequence must target it to the ER from which it goes to the Golgi.

e) It has a signal sequence that must be cleaved off before it can enter the ER.