Proteins that are destined to become associated with the inner surface of the plasma membrane are:a
manufactured in the same way as protein hormones.
b. manufactured in the same way as proteins destined to become external peripheral proteins.
c. made on free ribosomes in the cytoplasm.
d. made on ribosomes located on the rough endoplasmic reticulum.
e. transported to the plasma membrane within a secretory vesicle
C
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Which of the following cells contain a plasma membrane?
A. Bacterial cells only B. Animal cells only C. Animal cells, plant cells, and bacterial cells D. Animal cells and plant cells only
The ascending portion of the loop of Henle is
A. permeable to water and impermeable to sodium. B. permeable to water and permeable to sodium. C. impermeable to water and permeable to sodium. D. impermeable to water and impermeable to sodium. E. the site of active transport of water.
What is the agricultural significance of root nodules on plants?
1.The nodules help hold soil in place so there is less erosion.
2.The nodules place nitrogen in the soil, so that less fertilizer is required.
3.The nodules increase the surface area of the root for water absorption, so less irrigation water is needed.
4.Root nodules would play no role in agricultural plants.
All of the following are true EXCEPT one. Choose the exception
A) The great diversification of animals occurred during the Cambrian explosion. B) For most of biological history, life was confined to aquatic habitats. C) The evolution of multicellularity took place after the origin of the eukaryotes. D) The first organisms to colonize land were animals.