Muscle fibers are ____ when you are looking at something far away
Fill in the blank(s) with the appropriate word(s).
Answer: tighter
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You had a cold last month and you caught another one this month from your brother. What is the most likely reason
for this happening?
a. Memory cells were not formed as a response to the first cold. b. The antibodies formed as a response to the first cold were degraded. c. The two cold viruses are different. d. Your macrophages are unable to perform phagocytosis. e. Your antigen-presenting cells do not recognize the second cold virus.
Phytoremediation is
a. rotating crops so that soil minerals are replenished. b. replacing eroded topsoil so that plants can grow in the soil again. c. plowing under all or parts of crops to improve the soil. d. the use of plants to remove pollutants from the environment. e. replacing unwanted plants with plants useful to humans.
As the polypeptide is elongating in translation,
what is the ribosome doing?
a. removing incorrectly added amino acids. b. moving along the mRNA transcript bonding amino acids to each other. c. travelling back and forth between the nucleus and the growing polypeptide with information on which amino acids to add. d. removing the non-coding introns. e. doing more than one of these functions
Deviations from __________ indicate that a population is evolving. Fill in the blank(s) with the appropriate word(s)