Amino acids are linked by what kind of bonds to

form the primary structure of a protein?
a. disulfide
b. hydrogen
c. ionic
d. peptide
e. none of these


Answer: d

Biology & Microbiology

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A man has a mutation in the ATP synthase gene. This results in an inability to synthesize ATP properly, causing extreme muscle weakness. If this man has children, what is the likelihood that they will inherit this disease from him?

A. 100% B. 0% C. 50% D. 25% E. 75%

Biology & Microbiology

Regarding Investigating Life 22.5, why might these trees only secrete nectar on young leaves rather than larger, more mature leaves?

A. These leaves are near the lateral meristem, where secondary growth will help strengthen branches against the ants in domatia. B. These leaves have internodes and more leaflets to distribute any adverse effects from the ants living in domatia. C. These leaves perform more photosynthesis, being newer, and therefore make the most nectar. D. These leaves have more cellulose, because being newer, this form of carbohydrate is a better sugar for the nectar. E. These leaves are near the apical meristem, attracting ants to the entire length of the branches.

Biology & Microbiology

The pancreatic secretions governing glucose

levels are precisely controlled by a. neural connections to the pancreas. b. the blood-brain barrier. c. cooperative interactions. d. feedback mechanisms. e. releasing factors

Biology & Microbiology

Which carbohydrate is used to strengthen the shell of

crabs? a. glucose b. lactose c. glycogen d. amylose e. chitin

Biology & Microbiology