A female salmon laying unfertilized eggs in a nest is preparing them for ____ by a male salmon.
A. external fertilization
B. internal fertilization
C. indirect development
D. direct development
E. differentiation
A. external fertilization
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Exchange of genetic material in ciliates is known as:
A. macronucleosis B. micronucleosis C. conjugation D. panmixis E. myxomycetosis
Candle jars are usually used to
A. store candles. B. provide an atmosphere with CO2. C. stimulate the growth of obligate anaerobes. D. prevent the growth of obligate aerobes. E. provide an atmosphere with CO2 AND stimulate the growth of obligate anaerobes.
A boy developed signs of sexual maturity at age 3. A possible diagnosis is
A) XY female syndrome. B) XX male syndrome. C) congenital adrenal hyperplasia due to 21-hydroxylase deficiency. D) pseudohermaphroditism due to 5-alpha reductase deficiency.
Symptoms are
A) subjective characteristics of a disease that only the patient can feel. B) objective manifestations of a disease that can be measured. C) objective manifestations of a disease that can be observed by others. D) characteristics of a disease, such as sweating. E) laboratory tests used to diagnose a disease.