mitochondria and chloroplasts may have arisen through
What will be an ideal response?
endosymbiotic events
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About half of all flowering plant species, including many important crop plants, are ____
a. polyploids b. haploids c. aneuploids d. euploids e. diploids
A population of birch trees is present on the side of a mountain and is preyed upon by beetles that burrow into bark. Which tree would be the most fit?
A) a tree that grows to be the tallest B) a tree that has thicker bark C) a tree with more active photosynthetic enzymes D) a tree that has thick, strong roots
What is the name of the enzyme that forms nitric oxide?
a) nitrous oxide hydrolase b) nitric oxide dismutase c) nitric oxide synthase d) nitric oxide oxidase
The nuclear membrane re-forms during
A) interphase. B) metaphase. C) prophase. D) telophase. E) anaphase.