Xylem and phloem are types of ____
a. ground tissue
b. protoderm
c. vascular tissue
d. meristem
e. dermal tissue
ANSWER: c
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A. attachment. B. entry. C. replication. D. immediately killing the host cell. E. viral DNA integrates into the host chromosome.
One difference between eukaryotic and prokaryotic cells is that eukaryotic cells ________ prokaryotic cells
A) have DNA, which is lacking in B) have membrane-enclosed structures called organelles, which are lacking in C) have a plasma membrane, which is lacking in D) have a nucleoid region, which is lacking in
The level of environmental toxins such as DDT decreases as you move into the higher trophic levels
Indicate whether the statement is true or false
Which of the following types of radiation is nonionizing and has the shortest wavelength?
A) ultraviolet light B) infrared radiation C) microwaves D) X rays E) gamma rays