Water is most likely to enter a mesophyll cell
a. as a gas.
b. as a liquid.
c. covalently bound to sugars.
d. coupled to ion transport.
e. via endocytosis.
Answer: b. as a liquid.
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Two “magic” solutions are sold by a research supply company. “Magic Solution A” promises to extract all proteins, including integral membrane proteins, from the plasma membrane. “Magic Solution B” promises to simply extract all peripherally associated membrane proteins. What is the likely composition of “Magic Solution A” and “Magic Solution B”?
A. "Solution A" and "Solution B" both contain high salt buffers that disrupt hydrogen bonds and ionic interactions B. "Solution A" and "Solution B" both include membrane solubilizing detergent(s) C. "Solution A" is a membrane solubilizing detergent, "Solution B" is a high salt buffer that disrupts hydrogen bonds and ionic interactions D. "Solution A" is a high salt buffer that disrupts hydrogen bonds and ionic interactions, "Solution B" is a membrane solubilizing detergent
Homo neanderthalensis is believed to be a direct ancestor of Homo sapiens
Indicate whether the statement is true or false
The association between actin filaments and the plasma membrane is mediated by all of the following except
a. catenin links to cadherins. b. direct interaction between actin and plasma membrane proteins. c. myosin I-calmodulin linkages. d. talin links to integrins.
All of the following are eukaryotic organisms that cause diarrheal disease EXCEPT
A) Cryptosporidium. B) Cyclospora. C) Entamoeba. D) Giardia. E) Campylobacter.