Which hormone is most involved in apical dominance?
a. abscisic acid
b. auxin
c. gibberellin
d. ethylene
e. cytokinin
b
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In a normal cell, cell death typically occurs in which phase of the cell cycle?
A) G1 B) S C) G2 D) M E) all of the above
For each item listed below, select a sterilant that you feel is the most suitable and effective for that item. Discuss why you selected each sterilant.A) plastic Petri dishes to be used for nutrient mediaB) glass tubes of bacterial cultures to be discardedC) sterile milkD) dozens of reusable glass pipetsE) bone tissue for graftingF) room airG) hospital mattressesH) biopsy tissue for histology analysisI) plastic respiratory therapy equipment and arthroscopesJ) vaccines
What will be an ideal response?
Certain small towns in the western United States have remained isolated and inbred since their settlement many years ago. Some alleles are more common in these communities as compared to the rest of the population. This effect is known as
A. directional selection. B. artificial selection. C. founder effect. D. Hardy-Weinberg principle. E. disrupting selection.
Which of the following statements is related to a decrease in blood flow?
A. The liver does not metabolize drugs as efficiently as before. B. Ventilation of the lungs is reduced. C. Males become infertile. D. The homeostatic adjustment to heat is limited. E. Females undergo menopause.