Is this statement true or false? The plasma membrane is the outermost component of all cells. Explain
Indicate whether the statement is true or false
False. Some cells have cell walls and capsules outside the plasma membrane.
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A single motor neuron and the population of muscle fibers that it innervates is called the:
A. motor unit. B. motor endplate. C. neuromuscular junction. D. excitation-contraction coupling. E. twitch fiber.
Sucrose is made from joining a glucose and a fructose molecule in a dehydration reaction. What is the molecular formula for this disaccharide?
a. C6H12O6 b. C10H20O10 c. C12H22O11 d. C12H24O12 e. C12H24O13
Children in the Southeastern United States play with red maple fruits (Acer rubrum). The fruits are tossed in the air and spin back to the ground, acting like small helicopters. Which part of the fruit allows for this?
A. The integument B. The endosperm C. The ovule D. The pericarp
The genomes of mammalian mitochondria contain
A. genes whose products are used in translation of mRNA. B. genes for proteins used in oxidative phosphorylation. C. ribosomal genes. D. a total of 37 genes. E. All of the items listed are correct.