When a potassium ion (K+) moves from the soil into the vacuole of a cell on the surface of a root, it must pass through several cellular structures. Which of the following correctly describes the order in which these structures will be encountered by the
ion?
A) plasma membrane ? primary cell wall ? cytoplasm ? vacuole
B) secondary cell wall ? plasma membrane ? primary cell wall ? cytoplasm ? vacuole
C) primary cell wall ? plasma membrane ? cytoplasm ? vacuole
D) primary cell wall ? plasma membrane ? lysosome ? cytoplasm ? vacuole
E) primary cell wall ? plasma membrane ? cytoplasm ? secondary cell wall ? vacuole
Answer: C
You might also like to view...
The protein coat of a virus
A. is called a capsomere. B. is called a capsid. C. protects the nucleic acid. D. is involved in the recognition of host cell receptors by non-enveloped viruses. E. is called a capsid, protects the nucleic acid, AND is involved in the recognition of host cell receptors by non-enveloped viruses.
Some protists use multiple fission (cell division preceded by several nuclear divisions) as a means of reproduction. Multiple fission is also referred to as
A. budding. B. zygotic meiosis. C. schizogony. D. syngamy. E. intermediary meiosis.
Changing conformation at the active site as a result of binding a substance at a different site is known as ________
Fill in the blank(s) with correct word
Levels of Cdk activity change during the cell cycle, in part because ________________
(a) the Cdks phosphorylate each other. (b) the Cdks activate the cyclins. (c) Cdk degradation precedes entry into the next phase of the cell cycle. (d) cyclin levels change during the cycle.