Explain how blocked coronary vessels can lead to a myocardial infarction, a heart attack.

Between 6 and 7 million years ago, the lineage that led to hominins split from the lineage that led to chimpanzees. Which of the following best describes one of the ways that hominins evolved? A.

Phosphofructokinase, a controlling enzyme of glycolysis, is inhibited by ___ and activated by ___.

For a given species, an increased evolutionary rate would cause a decrease in what

Which of the following statements about receptor potentials is FALSE? A. The receptor proteins respond to stimuli. B. They can trigger an action potential. C. Odor molecules can act as stimuli. D. The receptor potential is carried by neuroglia.

A species is a group of similar organisms that a. can mate with each other and produce fertile offspring. b. can live together on an island. c. can migrate to an island from the mainland. d. all have exactly the same traits.

When the rate of vibration of the vocal cords increases?

In a DNA molecule, which of the following forms a base pair with adenine? O A. Cytosine O B. Guanine O C. Thymine O D. Adenine

Wood lice are more active as they move from a dry area to a humid area. Which innate behavior are they displaying here?

During the early stages of embryo development, dolphins have gill pouches. What does this mean? a. Dolphins evolved from fish. b. Fish evolved from dolphins. c. Dolphin embryos go through a fish phase during development. d.

Explain the importance of regulatory mechanisms in living things. Distinguish between positive and negative feedback.