If a person has a diet high in saturated fats, ________ molecules can carry cholesterol from the liver to cells and to the arterial walls, whereas ________ transports cholesterol from the cells to the liver, where it is converted to bile salts which can modulate cardiovascular function.
A. LDL; insulin
B. HDL; trans-fats
C. LDL; HDL
D. HDL; LDL
Answer: C
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What conditions result in the release of cAMP from Dictyostelium discoideum?
A. Shortage of nutrients B. Adequate moisture C. Abundance of nutrients D. Presence of predator bacteria
Translation occurs in the _____.
a. cytoplasm b. lysosome c. nucleus d. Golgi apparatus e. nucleoplasm
Aerobic cellular respiration ________.
uses glucose generates water generates oxygen Both 'uses glucose' and 'generates water' are correct.
A population of white-footed mice becomes severely overpopulated in a habitat that has been disturbed by human activity. Sometimes intrinsic factors cause the population to increase in mortality and lower reproduction rates in reaction to the stress of overpopulation. Which of the following is an example of intrinsic population control?
A) Owl populations frequent the area more often because of increased hunting success. B) Females undergo hormonal changes that delay sexual maturation and many individuals suffer depressed immune systems and die due to the stress of overpopulation. C) Clumped dispersion of the population leads to increased spread of disease and parasites resulting in a population crash. D) All of the resources (food and shelter) are used up by overpopulation and much of the population dies of exposure and/or starvation. E) Because the individuals are vulnerable they are more likely to die off if a drought or flood were to occur.