The sequence Lys-Asp-Glu-Leu (KDEL) serves to retain proteins in the ER by
a. preventing their packaging into vesicles destined for the Golgi.
b. binding to receptors within the membranes of the ER and Golgi, which retain them or return them to the ER.
c. binding the SRP receptor in the ER membrane.
d. associating with the lipids in the ER membrane.
Ans: b. binding to receptors within the membranes of the ER and Golgi, which retain them or return them to the ER.
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Intracellular granules of organic or inorganic material that are stockpiled by bacteria for future use are called ________.
Fill in the blank(s) with the appropriate word(s).
The hospital where you work is having an emergency blood shortage. Select the following blood types that could safely be given to a young female with type AB Rh- blood.
_____ A Rh- blood _____ A Rh+ blood _____ AB Rh- blood _____ AB Rh+ blood _____ B Rh- blood _____ B Rh+ blood _____ O Rh- blood _____ O Rh+ blood Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about blood typing? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Tubular secretion is essential for ___
homeostasis.
a. pH b. water c. solute d. temperature e. sugar
Please match the description to the correct group of microorganisms. Unicellular eukaryotes often described as animal-like
A) Algae B) Viruses C) Bacteria D) Protozoa E) Fungi F) Helminths