Hormones are a class of signaling molecule carried by the ___________________ to target cells. Fill in the blank(s) with the appropriate word(s)
ANSWER: bloodstream
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The major difference between aerobic and anaerobic respiration is the final electron acceptor at the end of the electron transport chain.
Answer the following statement true (T) or false (F)
What type of signaling occurs when insulin is secreted from the pancreas and acts on muscle cells to increase glucose uptake?
A. contact-to-contact signaling B. intercellular signaling C. autocrine signaling D. paracrine signaling E. endocrine signaling
You have decided to repeat Palade’s experiments on the endomembrane system. You think you’ve done everything correctly, but when you observe your final sample under the microscope, you find that the entire endomembrane system contains tiny black dots. When you look at later timepoints you see the same thing. What part of the experiment did you forget?
A. You forgot to add radioactive amino acids. B. You forgot to add osmium tetraoxide. C. You forgot to add nonradioactive amino acids. D. You forgot to add the silver-containing emulsion. E. You didn’t forget anything, this is what the experiment is supposed to look like.
The interlocking ‘armor’ of proteins that protect a protist is referred to as which of the following?
a. pili b. spiricles c. capsules d. pellicles