Answer the question using the accompanying figure. Humans living in environments with access to good medical care
are most likely to exhibit which of the following survivorship curves?
a. Type I, which is graph A
b. Type II, which is graph B
c. Type I, which is graph C
d. Type III, which is graph C
e. Type III, which is graph A
ANSWER: a
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In a four-chambered heart, which of the
following would have the thickest muscle?
a. right atrium b. left atrium c. right ventricle d. left ventricle e. both ventricles would have equally thicker muscle than the atria
Which is false regarding passive transport?
a. It depends on concentration or electrical gradients. b. It involves weak binding between solute and protein. c. It requires an energy input. d. It depends on protein shape change. e. None of these are false.
__________ is the least frequent of the dispersal patterns seen in nature
a. Random dispersion b. Aggregated distribution c. Uniform dispersion d. Density-dependent distribution e. Clumped dispersion
When you scratch a mosquito bite, you damage some cells. Damaged cells release histamine, which causes localized swelling that can crush additional cells, causing the release of more histamine. This is an example of
A) positive feedback. B) negative feedback. C) neurotransmitter activity. D) paracrine communication. E) synaptic communication.