Question

What does the lac operon in bacteria code for?
a-lactose
b-enzymes the break down lactose
c-enzymes that synthesize lactose

Answer 1

B.Enzymes that brake down lactose I agree with your answer..hope it helps:))

Answer 2

cool beans ima ask more 1 momento

Answer 3

lol okay:))

Answer 4

Which of these sentences characterizes the regulatory mechanisms of gene expressions in organisms?
a-they help the organism to utilize all the metabolic resources inside their body completely which sometimes may lead to lack of metabolites
b-They save energy and metabolites and help the organisms to respond to the environmental changes.
c-
They utilize a high amount of energy, always lead to catabolic processes, and may lead the organism to exhaustion.

Answer 5

I think B-because Gene expression is the process by which information from a gene is used in the synthesis of a functional gene product. These products are often proteins..lol I hope that helps:))

Answer 6

thx

Answer 7

Which of the following is true with respect to mutagens?
a-Mutagens are chemical or physical factors that increase the rate of mutation.
b-
Mutagens are the genes that cause mutation.
c-
Mutagens are inheritable characters that develop mutation.

Answer 8

a?

Answer 9

I believe its A.Mutagens are chemical or physical factors that increase the rate of mutation.

Answer 10

Medical organizations recommend protecting your body from UV radiation by using sunscreen. Suggest a reason for this recommendation.
a-
Sunscreens block or scatter UV rays.
b-Sunscreens contain antibodies to fight UV rays.
c-Sunscreens reflect or scatter UV rays present in sunlight.

Answer 11

well I think its C. It keeps the sunlight off of you.it could also be B but B isn't it because antibodies have nothing to do with fighting UV rays:))

Answer 12

so c?

Answer 13

yes c..

Answer 14

thx

Answer 15

yw:))

Answer 16

A researcher while working in vitro (outside cell) added helicase enzyme which resulted in the untwisting of the DNA helix. But this untwisting led to strain ahead of the replication fork. Which enzyme can be added to correct this problem?
a-
Nuclease
b-
Topoisomerase
c-
Telomerase

Answer 17

B.)Topoisomerase is the best answer:))

Answer 18

thx!!!

Answer 19

Which molecule is called the “molecule of heredity?
a-amino acid
b-RNA
c-DNA

Answer 20

@JayBaybie

Answer 21

well ,The second type of nucleic acid, RNA, consists of molecules that are single stranded copies of nuclear DNA segments. They are smaller than DNA molecules and do not have the double helix shape. In addition, the DNA base thymine is replaced by the base uracil in RNA molecules.

Answer 22

B.RNA lol