The receptors for steroid hormones lie
A. within the cell membrane.
B. in the glycocalyx of the cell membrane.
C. in the endoplasmic reticulum of the cell.
D. in the cytoplasm.
Answer: D
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The energy released from the hydrolysis of coenzyme A is conserved in the synthesis of ATP
Indicate whether the statement is true or false.
Why is it a good strategy for a microbe to adhere to a receptor that plays a critical function for a host cell?
A. It ISN'T a good strategy-host cells could shift to a backup receptor and shut down production of the main receptor, preventing infection. B. If it's a receptor the cell MUST use, it doesn't have a backup system in place to switch to-so, even though it makes it susceptible to infection, it HAS to put that target out there. This benefits the microbe. C. Microbes need to evade detection and elimination by the immune system-if they adhere to a receptor that plays a critical function, they are less likely to trigger destructive immune responses. This would be similar to using a hostage as a shield in a police-standoff situation. D. It ISN'T a good strategy-by binding to receptors, microbes will be phagocytosed by cells and destroyed within them.
If your parents are heterozygous for a gene, what is the chance that you will have at least one copy of it?
A) 0% B) 75% C) 25% D) 50%
Mountain, basin, and hybrid sagebrush were each raised in the three different habitats where they are found. What is likely to happen to the hybrid zone?
a. It will disappear because the basin population will move up the mountain and replace the hybrids. b. It will disappear because the mountain population will move down the mountain and replace the hybrids. c. It will disappear because the basin population will move up and the mountain population will move down the mountain and replace the hybrids. d. It will persist because the hybrids have the highest fitness in the hybrid zone.