Proteins are diverse molecules that perform a wide variety of functions. Which of the following is not a typical function of proteins?
A) Transport
B) Catalyze reactions via enzymes
C) Movement
D) Energy storage
D
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. In many cases, negative feedback loops maintain homeostasis by adjusting hormones that act in ____
a. concert b. sequence c. antagonistic ways d. additive ways e. parallel
In nature, how does an ectothermic animal maintain a constant body temperature on a cold day?
A) by basking in a sunny location B) by increasing its rate of metabolism without basking C) by eating more food, which creates heat as it's burned for energy D) by shivering
How are brassinosteroids different from animal steroid hormones?
a. BRs regulate only cell division. b. BRs are enzyme-linked receptors. c. BRs bind with intracellular receptors. d. BRs have a histidine kinase that extends into the cell. e. BRs bind with a protein kinase receptor in the plasma membrane.
Which of the following has a lining of mucus to warm, moisten, and clean air as it is inhaled?
a) glottis b) alveoli c) nasal cavities d) larynx