Which of the following statements is true of a sperm cell?
A) A sperm cell is significantly larger than an egg cell.
B) A sperm cell contains two Y chromosomes.
C) A sperm cell travels randomly inside a woman's reproductive tract.
D) A sperm cell is one of the smallest types of cells in the body.
D
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It is a rare, genetically transmitted disorder that involves twitching movements, dementia, and death. Its symptoms begin to appear in childhood to late in life, and onset most typically occurs during midlife. What is it?
a. Huntington's disease c. Parkinson's disease b. Alzheimer's disease d. Meningitis
In terms of both biological and adoptive families, which of the following specific
intellectual abilities mentioned in the textbook has the lowest correlation between parent and child? a. arithmetic b. vocabulary c. block design d. picture arrangement e. digit design
The peripheral nervous system consists of the __________ and the _________ nervous systems
a) autonomic; somatic b) autonomic; sympathetic c) parasympathetic; somatic d) parasympathetic; sympathetic
The receptors for body position and movement are located
a. in the parietal cortex. b. in the inner ear. c. in the outer layer of the skin. d. within the corpus callosum. e. within the spinal cord.