幾個普生小問題
做考古題不會又找不到答案的小問題 請高手們指教了
1. About how much of the sugar formed in a plant is used by the plant itself
during cellular respiration? a)1% b)10% c)50% d)98% e)100%
2. Genes that are inactive for long periods of time tend to be bound to
a) each other b) methyl group c) actin and myosin
d) the nucleolus e) sulfate
3. Restriction enzymes are synthesized by a) bacteria only
b) yeast and bacteria c) eukaryotic cell d) all kinds of cells
4. The maximum frequency of a recombination of genes at two loci is
(I.e.% recombinant from its zygotes) a)25% b)50% c)75% d)100%
5. Of all the texa, the only one that exists in nature as a biologically
cohesive unit is the a) species b) genus c) phylum or division d)kingdom
6. The most diverse and widespread of all contamporary plants are the
a) mosses b) ferns c) conifers d) angiosperms
7. The parts of neurons that recieve neurotransmitters and pass on
graded electronic potentials toward the soma are the
a) myelin sheaths b) axons c) axon hillocks d) dendrites
對生物高手來說應該很簡單吧....
可是我花了一個下午翻遍書都找不到確定的答案...
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