A mature maple tree can have a mass of 1 ton or more (dry biomass, after removing the water), yet it starts from a seed that weighs less than 1 gram. Which of the following processes contributes the most to this huge increase in biomass?
What will be an ideal response?
Incorporation of CO2 gas from the air by green leaves
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When cells are not responding to normal controls over growth and division, they form a tissue mass known as a
a. metastasis. b. malignancy. c. tumor. d. carcinogen. e. nucleosome.
Autosomes represent ____
A. all chromosomes including the sex chromosomes B. the half of the chromosomes inherited from one parent C. all chromosomes other than the sex chromosomes D. chromosome pairs with unlike members E. those chromosomes found only in gametes
Suppose that the first part of a new polypeptide chain being produced in a eukaryotic cell has a signal peptide. Where would this polypeptide be located within the cell as it is maturing?
a. first in the rough ER, and then in the Golgi apparatus b. first in the cytoplasm, and then in the rough ER c. in the cytoplasm only d. in the Golgi apparatus only
The oxidation-reduction cofactor in the multisubunit enzyme fumarate reductase in E. coli which has the greatest reduction potential is
A) FAD. B) iron clusters. C) ubiquinone. D) menaquinone. E) NADH.