Approximately _____ of IVF pregnancies result in multiple births
a. 5%
b. 10%
c. 20%
d. 50%
e. 75%
c
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Many carnivores have lost their taste receptor that detects:
a. bitterness b. saltiness c. sweetness d. sourness e. fattiness
What portion of the cell contains microtubules and microfilaments?
a. nucleus b. mitochondria c. cytoskeleton d. smooth ER e. rough ER
Within the phylum Cnidaria, corals are most closely related to which organism?
a. Hydra b. jellyfish c. hydrozoans d. sea anemones e. Portuguese man-of-war
Which statement about chemical or electrical synapses is true?
a. Electrical synapses require a neurotransmitter. b. In electrical synapses, presynaptic and postsynaptic neurons are separated by synaptic clefts. c. Electrical synapses store excess ions in synaptic vesicles. d. In chemical synapses, presynaptic and postsynaptic neurons are connected by a protein channel. e. Electrical synapses involve the transfer of ions from presynaptic to postsynaptic neurons