Which of the following terms describes a substance formed by the combination of two or more elements in definite proportions?
a) compound
b) isotope
c) nucleus
d) enzyme
Ans: a) compound
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(a) a nucleus. (b) membrane-bound organelles. (c) chloroplasts. (d) photosynthetic ability.
Why are both blood and bone considered connective tissue?
What will be an ideal response?
the main substrates for gluconeogenesis are the three carbon long molecules of alanine, glycerol, and _________
Fill in the blank(s) with the appropriate word(s).
You have added a specific amount of excitatory neurotransmitter mixed with a 6× higher concentration of an inhibitory neurotransmitter to a synaptic cleft. You expect that the postsynaptic neuron will
A) produce 6× its normal number of action potentials. B) produce 6× its normal number of negative action potentials. C) show a net hyperpolarization as a result of neuronal integration. D) show a net depolarization as a result of neuronal integration. E) not respond to either signal.