Question

Please answer the following multiple choice please! I need this for tomorrow and i need help! You do not have to answer the short answers. Thank you!

Date: ID: B Class: Name AP Bio Ch. 16,17,18 Test Multiple Choice Identify the choice that best completes the statement or answers the question yme that degrades proteins in the stomach, is synthesized as pepsinogen and converted to active pepsin in the stomach by the removal of several amino acids. The activation of pepsin is an example of a. transcriptional regulation. b. translational rcgulation. c. posttranscriptional regulation. d. posttranslational regulation. c. RNA interference. 2. Som a way that short, single stranded regions are created. We e restriction endonuclcases cut the DNA in such call these regions a. hydrogcn-bonding ends b. sticky ends c. tacky ends d. blunt ends e. jagged ends 3. Why is ubiquitin nicknamed the "doom tag"? When ubiquitin binds to a target protcin, the ubiquitin enzyme degrades the protein and destroys it. When ubiquitin binds to a target protein, the complex is sent to the protcasome and the complex is hydrolyzed to amino acids. If a cell is deficient in ubiquitin, the cell will die. High levels of ubiquitin in a cell cause the cell to destroy vital proteins, leading to premature cell death. Ubiquitin catalyzes the conversion of pepsinogen to active pepsin, an enzyme vital to protein digestion in the stom an organism to starve. a. b. c. d. e. 4. The core of a virus is a. a protein. b. a sugar. C. a nucleic acid. d. a fat. e. a phosphate. During bacterial conjugation, bacterial DNA with different alleles are transferred. Bacteria use a long tubular structure called a to obtain differing alleles. a. metabolic pilus b. asexual pilus c. flagellum d. cilia e. sex pilus 5.

Answer 1

1. The answer is D) Post translational regulation.

Conversion of protein is the change made in protein after its translation & therefore is post translational regulation.

2. The answer is B) Sticky Ends.

These are single stranded overhangs.

3. The answer is B).

Ubiquitin directs proteasome mediated protein degradation.

4. The answer is C) Nucleic Acid.

It consists of either RNA/DNA.