Lipids are important to biological systems because
A) they are solid at body temperature so they stabilize membranes.
B) some lipid types are potentially large sources of energy to perform cellular work.
C) most help to buffer aqueous solutions in the body.
D) all lipids are very soluble in water.
E) they are able to store and transmit genetic information.
B
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Dysplasia occurs when an abnormal structural change occurs in a cell
Indicate whether the statement is true or false
Which type of metabolism is unique to prokaryotes?
a. chemoheterotroph b. photoheterotroph c. photolithotroph d. photoautotroph
Facilitated diffusion is similar to simple diffusion because:
A) each requires the use of energy. B) in both, materials move down their concentration gradient. C) each utilizes vesicles to move material around the cell. D) each requires a protein channel for movement to occur.
An unmanned spacecraft has been sent to another planet to detect other life forms that might be quite different from those on Earth. If the probe could only send back one still picture, which property or properties of life would be most evident?
What will be an ideal response?