Which of the following cell types retains the ability to undergo cell division?
A) a sclereid
B) a parenchyma cell near the root tip
C) a functional sieve tube element
D) a tracheid
E) a stem fiber
Answer: B
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Which of the following would be used to determine the probability of three independent events in order?
A. Sum rule B. Product rule C. Chi-square test D. Binomial expansion E. Random sampling error
The movement of water across a membrane from an area of lower solute concentration to a region of higher solute concentration is called ____.
a. osmosis b. active transport c. endocytosis d. both diffusion and osmosis e. both osmosis and active transport
The digestive organ that stores food in penguins is called a: a. crop
b. hular pouch. c. vacuole. d. head adornment.
In saltatory conduction, nerve impulses jump from one exposed region of the axon to another. This exposed region is called the ________
A) motor end plate B) node of Ranvier C) Schwann cell gap D) interneurons