I need Multiple choice help on Biology please.?

Question

11. According to my hypothesis, bacteria that lived millions of years ago communicated by their body language. In scientific terms, the main problem with my hypothesis is that

A. it fails to explain the phrase body language.
B. it can't be disproved.
C. it may be false.
D. if it's proven, our knowledge of bacteria will be disproved.

12. If you were an organism, which one of the following would be your chief advantage of utilizing oxygen?

A. You're able to act as a fermenter.
B. You're able to produce the carbon dioxide needed by the body.
C. You're able to get rid of volatile hydrogen before it does harm.
D. You're able to produce energy in greater quantities.


13. Most of the fruits and vegetables you get from a supermarket are the product of

A. accidental mutations.
B. gene insertion via bacteria.
C. selective bacterial intrusions.
D. selective breeding.

Answer 1

B. Since we have no way what "body language" was back then.
D. Using oxygen releases large amounts of energy.
D. We've selectively bred most of our fruits and veggies.

Answer 2

11. B
12. D
13. D

not so sure about 13

for 11, consider a very important aspect of an experiment: it must be repeatable
for 12, think about the products need for aerobic respiration (oxygen, thus the aer part)
for 13, it does make sense that you'd want to breed the best fruit/vegetables when selling. A and B and C make no sense. Mutations would be breeded if they were beneficial only, and you wouldn't want to do B or C, those just....aren't something to do with fruit. with people, yes.

Answer 3

enzymes are proteins that catalyze biochemical reactions. In those reactions,the compounds on which the enzyme acts are talked approximately as substrates and the ensuing compunds are talked approximately as products. the two the temperature and pH can impression the value of reaction catalyzed by means of an enzyme, ability catalyse works perfect at impartial pH. If the answer is merely too acidic (low pH value) or too elementary (severe pH value) the catalase is inactive - now no longer applications as an enzyme

Answer 4

11. B
12. D (this is post-facto)
13. D (but taking advantage of accidental mutations)


These questions are terribly written. (Well, 11 is okay)

Answer 5

these are the correct answers
11.B
12.D
13.D