How does CO2 enter a plant?
A) Through the roots
B) Through the stomata
C) Through the stroma
D) Through the grana
B
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All of the following about Homo habilis is true except
A. the species lived in Africa for 500,000 years and then became extinct. B. the species coexisted with dinosaurs. C. the species was replaced by a new kind of human, which had a larger brain. D. the species was small in stature. E. the species was associated with tools.
Which protist group is characterized by having a micronucleus and a macronucleus?
a. ciliates b. euglenoids c. actinopods d. diplomonads e. amoebozoans
There has been considerable support for the hypothesis that peptides can function as satiety signals, what does the support suggest?
What will be an ideal response?
The molecule needed to allow a cell to transfer genetic information from RNA to DNA is
A. DNA polymerase. B. RNA polymerase. C. reverse transcriptase. D. chlorophyll.