Why do we have storage macromolecules, such as fats, in our bodies?
A. Human cells can directly capture the energy of sunlight through photosynthesis and store it as macromolecules such as fats.
B. We can break down these macromolecules to provide energy for the endergonic reactions in our bodies.
C. Breaking down macromolecules, such as fats, is an endergonic process.
D. Macromolecules, such as fats, are a convenient way to store kinetic energy.
Answer: B
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Which of the following is true of carbon?
A) It forms only polar molecules. B) It can form a maximum of three covalent bonds with other elements. C) It is highly electronegative. D) It can form both polar and nonpolar bonds.
The release of factors by cells that influence the activity of nearby cells is referred to as:
A. autocrine signaling. B. paracrine signaling. C. endocrine signaling. D. electrical signaling. E. pheromonal signaling.
What prevents a plant cell from bursting in a hypotonic solution?
a. plasma membrane b. transport proteins which help pump the excess water out of the cell c. cell wall d. a plant cell will not burst in a hypotonic solution because water is moving out of the cell
The larval stage is a(n) _______ stage.
A. sessile B. reproductive C. haploid D. immature