The thickness of a specimen that can be viewed with one plane of focus is _____.
a. Field of vision
b. Magnification
c. Resolution
d. Depth of Field
Ans: d. Depth of Field
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Explain why the viral genome of the MS2 phage can be immediately translated. What type of genome must it have for this to be the case?
What will be an ideal response?
Trypan blue is
(a) taken up by living cells. (b) taken up by dead cells. (c) taken up by both living and dead cells. (d) used to identify plant cells.
The earliest known organism capable of sexual
reproduction is a type of a. virus. b. bacterium. c. alga. d. animal-like protist. e. fungus.
The first land plants were bryophytes, which then branched into ferns, gymnosperms, and finally angiosperms. What advantage did gymnosperms have over ferns?
a. Gymnosperms produce pollen and do not require water to reproduce b. Gymnosperms go through alternation of generations c. Gymnosperms have a vascular system, which allowed them to grow taller d. The gymnosperms can grow larger gametophytes e. Gymnosperms can produce flowers and fruits to aid in seed dispersal