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
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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%
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.
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
Which carbohydrate is used to strengthen the shell of
crabs? a. glucose b. lactose c. glycogen d. amylose e. chitin