Low density lipoproteins
a. carry cholesterol to the liver.
b. line the artery walls.
c. are used for nutrition.
d. lower blood pressure.
e. carry cholesterol and other fats to body cells.
E
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The first step in the establishment of infection is that the organism must
A. invade host tissues. B. attach to host cells. C. evade phagocytes. D. produce toxins.
Which of the following do proteins and nucleic acids have in common?
A. They are both made of amino acids. B. Their structures contain sugars. C. They are hydrophobic. D. They are large polymers. E. They each consist of four basic kinds of subunits (monomers).
Science as a way of seeking principles of order differs from art, religion, and philosophy in that:
A) science limits its search to the natural world of the physical universe. B) science deals exclusively with known facts. C) all scientific knowledge is gained by experimentation. D) all scientists wear white lab coats. E) there is no room for intuition or guessing
Which statement is true regarding the size of an organism's genome and its complexity?
A) The larger the genome size, the more complex the organism. B) The smaller the genome size, the more complex the organism. C) Any organism with a genome size larger than that of an amoeba is considered "complex." D) Any organism with a genome size larger than that of a fruit fly is considered "complex." E) No apparent relationship exists between the size of an organism's genome and its complexity