Question

Im in connections academy doing biology and i need help

Answer 1

lesson and numbered questions?

Answer 2

6)A DNA sequence reads -A-C-C-T-G-C-. Which of the following statements is plausible?
(open attachment)
Mutation to -A-C-G-T-G-C- is a neutral mutation.
Mutation to -A-A-G-T-G-C- is a frameshift mutation.
Mutation to -A-C-C-T-G-T- is an advantageous mutation.
Mutation to -A-A-G-T-G-C- is a lethal mutation.

7)Tryptophan is an amino acid that is synthesized via a series of metabolic reactions. The genes for the enzymes involved in tryptophan biosynthesis are encoded in an operon in E. coli, a prokaryote. The operon is regulated by a repressor, which changes its shape when tryptophan binds to it. Which of the following statements explains the action of the repressor? A)When tryptophan levels are high, it binds to the repressor, changing its shape so that it cannot bind to the operator region.
B)When tryptophan levels are low, it binds to the repressor, changing its shape so that it cannot bind to the operator region.
C)When tryptophan levels are high, it binds to the repressor, changing its shape so that it can bind to the operator region.
D)When tryptophan levels are low, it binds to the repressor, changing its shape so that it can bind to the operator region.

8)Mutation of which of the following would result in the least disruption during development of a frog embryo? A)ribosomal protein gene
B)RNA polymerase gene
C)homeotic genes
D)melanin gene

9)Which of the following do all cells in a multicellular organism have in common?
A)They all express the same genes.
B)They all have the same proteins.
C)They all have the same mRNA.
D)They all have the same DNA.

Answer 3

what lesson?

Answer 4

lesson 15 unit 4

Answer 5

8& 9 are d

Answer 6

1. B
2. C
3. A
4. A
5. C
6. D
7. C
8. D
9. D

Answer 7

thanx :)

Answer 8

medal?(:

Answer 9

thank you so much and you're welcome.(: study though, okay?(:

Answer 10

to anyone who stumbles upon this; all of her answers were right accept #6 the correct answer was; A
-A-A-A-T-G-C-