All living things
1.use protein as their genetic material.
2.engage in metabolic activity.
3.require oxygen.
4.are made up of more than two cells.
2
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Crossing over is facilitated by a ____ orientation between homologous chromosomes
a. tightly angled b. separated, perpendicular c. tight, perpendicular d. separated, parallel e. tight, parallel
Why is the SLA higher under shade for both shade-tolerant and shade-intolerant plants?
A) Shade intolerant plants have larger surface areas. B) Leaves tend to be thicker in the shade. C) Leaves tend to have larger surface areas to absorb more sunlight. D) Shade tolerant plants have larger surface areas.
Which of these white blood cells are phagocytic?
A. neutrophils B. macrophages C. lymphocytes D. both neutrophils and macrophages E. both lymphocytes and macrophages
Infection occurs when
A. a person swallows microbes in/on food. B. pathogens enter and multiply in body tissues. C. a person inhales microbes in the air. D. contaminants are present on the skin. E. All of these choices are correct.