Traits that are affected by many genes are
A. usually recessive for females.
B. influenced through polygenic inheritance.
C. generally dominant in monozygotic twins.
D. only expressed through homozygous alleles.
Answer: B
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When the neuronal membrane is at rest, the potassium channels ____
a. permit potassium ions to pass quickly and easily b. permit potassium ions to pass slowly c. prohibit any movement of potassium ions d. help to open up the sodium channels
Communication between neurons would be considered a chemical change involving
a. sodium ions. b. neurilemmas. c. neurotransmitters. d. potassium ions.
Jayden is working with a laboratory rat in the school's psychology lab. He names the rat Nihanch. He begins to giving the rat a fast shock to its paws, and the rat jumps. Then every time he gives the rat a shock, he turns on a red light bulb in the side of the cage. Eventually, Nihanch jumps in response to the light even if the shock is not administered. In this example, the red light bulb was the _______ and the rat's jump when the light came on was the ________.
A. unconditioned stimulus; unconditioned response B. unconditioned stimulus; conditioned response C. conditioned stimulus; unconditioned response D. conditioned stimulus; conditioned response
Which of the following features of schizophrenia refers to a person’s rambling, jumping from topic to topic, or talking in a way that is incomprehensible?
a. Paranoid delusions b. Grandiose delusions c. Disorganized thinking d. Genetics