Muscle cells are stimulated by acetylcholine released from the terminals of
A. transverse tubules.
B. motor neuron axons.
C. sensory cell axons.
D. motor neuron dendrites.
E. sensory cell dendrites.
B. motor neuron axons.
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The NADPH required for the Calvin cycle comes from
A) reactions initiated in photosystem I. B) reactions initiated in photosystem II. C) the citric acid cycle. D) glycolysis. E) oxidative phosphorylation.
Although diversity of communities is affected by processes acting on the local level, it is also directly related to regional rates of species production and immigration.
a. true b. false
Choose the scientific evidence that supports evolutionary theory. Check all that apply.A) the fossil recordB) homologous structuresC) the molecular recordD) intelligent designE) vestigial structures
What will be an ideal response?
What is most critical for understanding the minimal gene set and the origin of life?
a. the number of genes b. the functions of the genes c. the stable environments of bacteria with the most reduced genomes d. the identity of genes involved in fatty acid/lipid metabolism to understand the origin of cell membranes