Which of the following is the best definition of parthenogenesis?
A) The combining of genetic material from two parents to produce genetically different offspring
B) A single organism producing both eggs and sperm and fertilizing itself
C) The creation of new organisms from body parts that have been pinched off from the parent
D) Gametes from the male developing into new offspring without combining with an egg
E) Eggs from a female developing into offspring without being fertilized
E
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Which of the following statements about nervous and endocrine signaling is false?
A. The nervous system and endocrine system are both regulatory systems, but the two systems do not communicate directly with one another. B. Endocrine signaling is generally more prolonged than nerve cell signaling. C. The nervous system transmits signals between adjacent cells using neurotransmitters, whereas the endocrine system signals with hormones. D. Neurotransmitters function only over short distances, whereas hormones can affect cells throughout the body. E. Nerve cell signaling is generally more rapid than endocrine signaling.
What is the advantage of excreting nitrogenous waste in the form of ammonia?
A) Ammonia is less toxic than uric acid. B) Ammonia is less soluble than uric acid. C) Ammonia excretion conserves energy. D) Ammonia does not diffuse across cell membranes.
An E-test can reveal
A) the minimum bactericidal concentration. B) the minimal inhibitory concentration of a drug. C) if a drug is bacteriostatic or bactericidal. D) the minimum bacteriostatic concentration. E) the mechanism of action for a particular drug.
_____ is the connective tissue responsible for the storage of fat.
Fill in the blank(s) with the appropriate word(s).