推 fierybear:bbb吧 如果是單選的話218.171.228.189 04/27
推 fierybear:第三題我不確定喔218.171.228.189 04/27
1. In the course of evolution of eukaryotic cell,some mitochondrial DNA was
transferred to?
a. the host cell's chloroplast
b. bacterical cell
c. the host cell's nucleus
d. the host cell's plasma membrane
e. a plasmid
2. A plant that is self-incompatiable has a genotype of S5S9 for the S-locus.
It receives pollen from a plant that is S3S9. Which of the following is
most likely to occur?
a. all of the pollen will germinate, forming pollen tubes
b. about half of the pollen will generate
c. none of the pollen will generate
d. fertilization will occur in about half of the flower of the pollinated
plants
e. pollen from the S3S9 plant will secrete ribonuclease that destorys
epidermal cells of the S5S9 stigma
3. Which element is always existing as a freeion ion and not conjugated with
any other organic molecules?
a. Ca b. K c. P d.Mg e.Mn
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