How long does it take a sperm to reach the
oviduct?
a. 3 minutes
b. 30 minutes
c. 3 hours
d. 3 days
e. 30 days
B
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Which of the following is found in every nucleotide?
a. ribose b. a single phosphate group c. a single carbon ring d. a double nitrogen ring e. nitrogen
Myasthenia gravis is a form of muscle paralysis in which _____
A) motor neurons lose their myelination and the ability to rapidly fire action potentials B) acetylcholine receptors are destroyed by an overactive immune system C) ATP production becomes uncoupled from mitochondrial electron transport D) troponin molecules become unable to bind calcium ions
Which of the following would be generally true of r-selected species?
A) All live very short life spans. B) R-selected species are larger organisms that produce few offspring. C) Most live until older age. D) R-selected species are smaller organisms that produce many offspring.
Adult food-borne botulism can be prevented by thoroughly cooking food (minimum 80°C for 20 minutes) before it is eaten.
Answer the following statement true (T) or false (F)