Why was it important for Mendel to remove the anthers from pea plants in his experiments when crossing two different true-breeding pea plants?
A. To prevent self-fertilization
B. To make sure self-fertilization would occur
C. To protect the pea plants from
environmental pollen
D. To stimulate the pea plants to ovulate
A
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Which number identifies the structure that carries supplemental genetic information?
a. 1 b. 2 c. 3 d. 4 e. 5
During the process of filtration, what part of blood passes through the filter?
a. red blood cells b. white blood cells c. plasma proteins d. capillary endothelial cells e. plasma
Consider an erythrocyte with an internal glucose concentration of 0.1 mM and an external glucose concentration of 5 mM. Each of the following is true about GLUT1 transport of glucose across the plasma membrane into the cell except
A) Keq is always equal to 1. B) ?G depends on the concentration gradient. C) inward movement is exergonic. D) ?G° is always equal to 0. E) the rate of GLUT1 transport is faster than that of simple diffusion.
Which of the following pairs is correctly matched?
a. middle lamella?cellulose b. integrins?receptors c. primary cell wall?pectin d. fibronectins?wood e. secondary cell wall?glycoproteins