All of the following are components of an amino acid EXCEPT a(n)
A) carboxyl group.
B) pentose group.
C) amino group.
D) ?-carbon.
E) R group.
B
Bloom's Taxonomy: Comprehension
Section: Organic Macromolecules
Learning Outcome: 2.25
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Where are the proteins needed for photosynthesis produced? (Select all that apply.)
A) in the cytoplasm B) in the chloroplasts C) in the nucleus D) in the mitochondria
Segmentation genes in Drosophila act in which of the following orders?
A) segmental, helical, spherical B) pair-rule, transdeterminal, gap genes C) gap, pair-rule, segment polarity D) pair-rule, segment polarity, gap genes E) pair-rule, segment polarity, Hox genes
An excitatory postsynaptic potential
a. is only one of several types of graded potential. b. has a hyperpolarizing effect. c. will drive the membrane away from its threshold. d. is summed with an inhibitory postsynaptic potential at the input zone of a neuron in a process known as synaptic integration. e. help keep the membrane at resting membrane potential.
The original Cell theory includes all of the following EXCEPT:
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