Select all of the following that are true of the intrinsic rate of population growth.
A. It is not often seen in nature.
B. It is the rate of population growth once a population reaches its carrying capacity.
C. It is the rate of population growth under optimal conditions.
D. It is seen when populations are in equilibrium.
E. It is most commonly seen in new, expanding populations.
Answer: E
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True or false: Symbiotic relationships between species do not change over time
A. true B. false
Mitochondrial disorders tend to cause great fatigue because
A) nerve cells are filled with mitochondria. B) muscle cells are normally filled with mitochondria. C) affected cells do not use their mitochondrial DNA. D) lysosomes dismantle the mitochondria in muscle cells.
Impulses are received by nerve cells through
a. an axon. b. any process that is long enough to reach the receptor. c. numerous dendrites. d. the intervention of the neuroglia. e. chondrocytes.
Facilitated diffusion across a biological membrane requires ________ and moves a substance ________ its concentration gradient
A) energy and transport proteins; down B) transport proteins; down C) energy and transport proteins; against D) transport proteins; against