Hot flashes, insomnia and mood swings are characteristic of ____
a. menarche
b. menopause
c. gametogenesis
d. menstruation
e. ovulation
ANSWER: b
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__________ are the structural and functional units of the nervous system
a. Neurons b. Brains c. Nerves d. Dendrites
UV rays from the sun cause a specific type of improper base pairing called a thymine dimer. If a cell cannot correct this problem, the section of DNA can be removed, causing a deletion of several nucleotides. What will this cause?
A) A point mutation forms that leads to a change in one amino acid. B) A point mutation forms that leads to changes in a handful of amino acids. C) The codons shift by one letter, and all the codons before the mutation are changed. D) The codons could shift by one letter, and all the codons after that point would be off.
Which component of the nervous system is divided into the somatic and autonomic divisions?
A) sensory B) peripheral C) motor D) central E) parasympathetic
In many ways, a mule is a superior animal to the horse or donkey. Mules are often stronger and can jump higher than either of their parents. Why, then, are mules considered to be a "weak hybrid"?
A) They are sterile. B) They do not live as long as horses and donkeys. C) Their offspring are progressively weaker than the parents. D) They are more prone to disease than are horses and donkeys.