A "structuralist" biologist would explain an organism's features as the result of ________
A) natural selection acting on random, small-scale variation
B) the inheritance of traits acquired over an individual's lifetime
C) principles of mathematics and physics that determine form and function
D) major "leaps" or "jumps" in phenotype within one generation
E) divine intervention in an organism's DNA
C
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Which tissue can NOT divide to give rise to identical progeny in a plant that reproduces asexually?
A. root B. stem C. leaf D. pollen grain E. ovule
How are acrosomal proteins released?
a. The most soluble acrosomal proteins are released first; bound acrosomal proteins are released second d. Acrosomal proteins are released after the zona pellucida is penetrated b. Bound acrosomal proteins are released first; soluble acrosomal proteins are released second e. Sperm begin the acrosomal reaction after reaction with the zona pellucida c. Acrosomal proteins are released in one phase
The community plus its habitat make up a(n) ________.
Fill in the blank(s) with the appropriate word(s).
Nerve impulses are electrical signals produced by which structure?
A. Plasma membrane of neuron B. Neuromuscular junction C. Synapse D. Lipid sheath of Schwann cell