In the cell cycle, a mitotic Cdk is present during
A) G1.
B) G2.
C) M.
D) S.
E) all of the above
E) all of the above
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Regulatory secretion of hormones would be associated with ________ at the transface of the Golgi.
A) endosomes B) lysosomes C) clathrin-coated vesicles D) non-clathrin vesicles E) microsomes
Which of the following statements accurately reflects the differences between Batesian mimicry and Müllerian mimicry?
A. Batesian mimicry does not differ from Müllerian mimicry. Two different scientists discovered these two types at the same time, and they disagreed on what to call it. B. Batesian mimicry differs from Müllerian mimicry in that they occur on different continents-Batesian on the North American and Müllerian on the European. C. In Batesian mimicry the model must be more dangerous than the mimic; in Müllerian mimicry they are both dangerous. D. Batesian mimicry involves invertebrates; Müllerian mimicry involves vertebrates. E. In Batesian mimicry the model must behave differently than the mimic; in Müllerian mimicry they behave the same.
When we metabolize our food, we produce heat that helps to keep us warm. Which of the following best describes why?
A) Producing ATP from ADP is exothermic; therefore, energy is released in the form of heat. B) When we break down food, all energy in the food is directly released in the form of heat. C) When we break down our food, the reactions are not 100 percent efficient; therefore, energy is lost as heat. D) Chewing is exothermic; therefore, energy is released in the form of heat when we eat food.
How are symptoms of an infection associated with the mode of transmission of the pathogen?
A) Lack of symptoms indicates that the infection is not transmissible to others. B) The worse the patient feels, the more likely the disease is transmissible to others. C) Bodily fluids produced during an illness are often rich in infectious organisms. D) There is no relationship between symptoms and mode of transmission. E) Bodily fluids are rarely a source of disease transmission during an infection.