The cytoplasmic membranes of ________ contain unbranched phospholipids and proteins
A) archaeal cells
B) bacterial cells
C) eukaryotic cells
D) both bacterial and eukaryotic cells
E) archaeal, bacterial, and eukaryotic cells
D
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In specific resistance, if the plant does not have an R protein, which of the following will happen when it comes into contact with a pathogen?
A. The AVR proteins of the virus will not be able to bind and the plant will not become infected. B. The AVR protein will block the plant's basal resistance, allowing the pathogen to infect the cell. C. The AVR protein will activate the plant's defensive genes. D. The AVR protein will bind to a receptor in the plant cell's membrane and a general defense response will be triggered. E. The pathogen will not make AVR proteins if the plant cell lacks the R protein.
The pigment responsible for the red-yellow coloration seen in leaves during the color change in autumn is
A. carotenoid. B. phytol. C. chlorophyll b. D. porphyrin. E. chlorophyll a.
Homozygotes for hemoglobin C have
A) sickle cell disease. B) a normal phenotype. C) a bluish complexion. D) a black mouth.
The primary function of the cell wall is to
A. support and protect the cell B. store DNA C. direct the activities of the cell D. help the cell move