Which of the following statements about post-translational modifications is false?
A) Additional inorganic factors could be added.
B) Post-translational modifications can include the addition of extra amino acids.
C) Post-translational modifications are often required for a protein to function.
D) Post-translational modifications provide a way for cells to regulate gene product functionality.
E) Additional organic factors could be added.
Answer: B
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You, a 29 year old sexually active male, have discovered some small vesicles on the penis. They are fluid-filled, red, and very painful. This is the second time that you have seen this. The first time around, about 2 months ago, you saw them but managed to ignore them. The lesions went away--no doctor, no treatment. But here they are again. You think that perhaps you picked up this infection six months ago, the last time that you had sex. Identify the likely infection.
A. Candidiasis B. HSV-1 infection C. HSV-2 infection D. Syphilis E. Chlamydia
biological carbon cycle
What will be an ideal response?
During both aerobic and anaerobic respiration, the products are similar. Which option below contains products produced by both types of respiration?
A) oxygen and glucose B) carbon dioxide and oxygen C) carbon dioxide and water D) oxygen and water
What pattern of cleavage is characteristic of mammals?
A. Holoblastic cleavage with eggs containing very little yolk, but with the inner cell mass distributed uniformly B. Some yolk, and cleavage resulting in vegetal and animal poles C. Holoblastic cleavage with eggs containing little or no yolk D. Holoblastic cleavage with eggs containing very little yolk, but with the inner cell mass concentrated at one pole E. Meroblastic cleavage with eggs containing almost entirely yolk