What is a characteristic of androgen insensitivity syndrome?
a. No testosterone is produced.
b. Chemicals circulating in the blood deactivate the male hormone.
c. The cellular receptor for testosterone in the target cells is defective.
d. The male with this defect is normal in all respects except that he is sterile.
e. Testosterone is degraded quickly.
c
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The statement "DNA ? RNA ? Proteins" ________.
A) is known as the central dogma B) depicts the regulation of gene expression C) is the same in all organisms, as well as viruses and prions D) describes a series of catalytic reactions
Tube feet of sea stars are used for feeding in addition to locomotion
Indicate whether the statement is true or false
Which of the following groups of bacteria lives in environments similar to those that may have existed on the early Earth?
A) deeply branching bacteria B) cyanobacteria C) mycoplasmas D) thermophiles E) proteobacteria
Which of the following statements is not true of connective tissue?
a. It consists of a few cells surrounded by fibers in a matrix. b. It includes such diverse tissues as bone, cartilage, adipose, and loose connective tissue. c. It forms the internal and external lining of many organs. d. It connects and supports other tissues. e. It can have a matrix that is a liquid, a gel, or a solid.