Question

Question 21
In the Enzyme-Substrate Complex model below, what is represented by E?



a
enzyme
b
active site
c
substrate
d
product
Question 22
Which cells do NOT respond to the signals that regulate the growth of most cells?

a
cancer cells
b
G0 cells
c
immortal cells
d
stem cells
Question 23
How do ribosomes and the Golgi apparatus interact to maintain homeostasis?

a
Ribosomes store molecules that are converted into usable energy by the Golgi apparatus.
b
Ribosomes store liquids and other waste products that are created by the Golgi apparatus.
c
Ribosomes transport proteins and enzymes that are synthesized by the Golgi apparatus.
d
Ribosomes synthesize proteins that are sorted and packaged by the Golgi apparatus.
Question 24
Bacteria were some of the first organisms to be genetically modified because they have a relatively small genome and reproduce quickly. All of the following are reasons to study and modify a bacterial cell's genome for beneficial uses except

a
to use bacteria cells as a vector to add genes that code for useful products.
b
to modify bacteria into an infectious form that has the ability to mutate quickly.
c
to determine genes that code for toxins against other bacterial cells to make antibiotics from these toxins.
d
to determine the genes that code for proteins such as those used to produce insulin in large amounts.
Question 25
Put the following stages of transcription in order of first to last.

Reorder answers
1.termination stage
Reorder answers
2.elongation stage
Reorder answers
3.initiation stage

Answer 1

21. a (enzyme)

22. a (cancer cells) — cancer cells often ignore the normal growth-regulating signals.

23. d (Ribosomes synthesize proteins that are sorted and packaged by the Golgi apparatus.)

24. b (to modify bacteria into an infectious form that has the ability to mutate quickly) — this is not a beneficial reason.

25. Order (first → last): 3 (initiation), 2 (elongation), 1 (termination)