The large seaweed known as kelp is classified as a member of the
A. Chlorophyta.
B. Phaeophyta.
C. Chrysophyta.
D. Rhodophyta.
E. Deuteromycete.
Answer: B
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How is a nerve impulse generated when most sensory receptors are activated?
A. The action potential is converted to a binary code. B. The membrane becomes hyperpolarized. C. The membrane becomes repolarized. D. The membrane becomes depolarized.
According to the first law of thermodynamics, ____
a. matter can be created and destroyed b. matter only changes forms c. energy can be created and destroyed d. energy only changes forms e. matter and energy can be interconverted
Four of the following statements about cone snail venom are true. Which one is false?
a. It is a potential source of new drugs of medical interest. b. It may be lethal to humans. c. It immobilizes the cone snail’s prey. d. It is lethal to cone snail prey. e. Synthetic versions are used as a pain reliever in humans.
The muscle group in your upper arm is composed of what type of muscle tissue?
a) skeletal muscle b) adipose c) cardiac muscle d) both cardiac and skeletal e) smooth muscle