The minimum graded depolarization needed to operate the voltage-gated sodium and potassium channels is indicated by the label _____
A) A
B) B
C) C
D) D
E) E
Answer: A
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The use of transposons to generate mutations is a convenient way to create bacterial mutations in the laboratory
Indicate whether the statement is true or false.
Contact inhibition is best explained by which of the following statements?
a. Contact between neighboring cells triggers reactions leading to inhibition of mitosis. b. As neighboring cells become more tightly packed together, their size is restricted and cytokinesis can no longer occur. c. As cell number increases, the protein kinases they produce compete with neighboring cells, inhibiting mitosis. d. As cell number increases, the level of waste products increase, consequently slowing metabolism leading to mitosis. e. As cell number increases, size restrictions inhibit protein synthesis.
Which of the following is part of the brain?
A) thymus B) hypothalamus C) adrenal cortex D) thyroid
Body mass index (BMI) is useful because it gives you an idea of how much of your weight is due to adipose tissue.
Answer the following statement true (T) or false (F)