What part of a neuron carries signals toward the part of the cell that houses the nucleus?
A) node of Ranvier
B) axon
C) cell body
D) dendrite
Answer: D
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The master gene Hox helps to sculpt the body plan of embryos by ____
a. inhibiting the Dlx gene to prevent extra limbs b. timing the activation of Dlx genes c. causing cell death in any cell not expressing the Hox gene d. converting sugar into energy to allow the process to go to completion e. inducing mutations in plants
Which of the following is a correct pair based on their shared characteristics?
a. Earth and a closed system b. the universe and an open system c. an ocean and a closed system d. an ocean and an isolated system
A major feature included in the updated fluid mosaic model is
a. the interaction of transmembrane proteins with the cytoskeleton. b. the restriction of glycolipids to the extracellular face of the plasma membrane. c. the presence of multiple pass transmembrane proteins. d. the presence of N-linked oligosaccharide side chains on glycoproteins at the cell surface.
Calories are units of _________.
A. ATP B. food mass C. entropy D. energy