Nonsteroid hormones are ________ acting than steroid hormones because they activate molecules that are already present in the target cell in an inactive form
Fill in the blank(s) with correct word
faster
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Explain why the plasma membrane is permeable to some substances, while others require a channel or carrier protein to cross the membrane
What will be an ideal response?
Which of the following statements about crossing over is incorrect?
A) Crossing over combines sections of the maternal and paternal chromosomes. B) Crossing over plays a role in both sexual and asexual reproduction. C) There are on average one to three crossover events per chromosome. D) Crossing over increases the extent of genetic variation beyond what is possible through independent assortment alone. E) Crossing over results in recombinant chromosomes
What is an advantage to a farmer using an insect-resistant crop plant?
A) More pesticide use and better crop yields B) Less pesticide use and better crop yields C) More herbicide use but less pesticide use D) Sterile plants, with inability to form strange hybrids
Which of the following does not apply to the concept of herd immunity?