In mammalian eggs, the receptors for sperm are found in the _____
A) fertilization membrane
B) egg plasma membrane
C) cytosol of the egg
D) nucleus of the egg
E) mitochondria of the egg
Answer: B
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Syntrophic organisms cannot grow fermentatively without a hydrogen-consuming partner organism
Indicate whether the statement is true or false.
Answer the following statements true (T) or false (F)
1, In insects, as in humans, the presence of a Y chromosome determines maleness. 2, If you were to examine a typical population at a single locus, you would find more copies of the wild-type allele than any other allele. 3, An individual with an SRY gene is a male mammal. 4, Only fathers can pass on pattern baldness to their sons.
The cerebrospinal fluid is _____
A) a filtrate of the blood B) a secretion of glial cells C) cytosol secreted from ependymal cells D) secreted by the hypothalamus
Whales are ________ in the group ___________ arising most recently from a semi-aquatic group called the ____________
a. reptiles, perissodactyl, anthracothere b. reptiles, artiodactyl, archaeocetes c. mammals, artiodactyl, anthracothere d. mammals, perissodactyl, anthracothere e. mammals, artiodactyl, archaeocetes