What is the function of microvilli?
a. Microvilli provide structure inside the cell to maintain its shape and support organelles.
b. Microvilli allow cells to remain attached to neighboring cells in hostile environments.
c. Microvilli provide cells with a larger surface area for absorbing nutrients from food.
d. Microvilli provide a means of rudimentary locomotion for cells that distribute nutrients.
c. Microvilli provide cells with a larger surface area for absorbing nutrients from food.
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Generation time refers to:
a. the number of years it takes for a generation to die. b. the amount of time required to replicate the DNA in a cell. c. the time it takes to complete one cell cycle. d. the time required for an individual in a species to achieve sexual maturity. e. the time it takes for a new mitotic spindle to form.
The role of the gamma motor neuron is to: _____
a. Contract extrafusal muscle fibers b. Maintain tension in muscle spindles c. Activate golgi tendon organs d. None of the above
Which of the following statements about energy is incorrect?
A. Chemical bonds store potential energy. B. All forms of energy can be converted to heat. C. A boulder perched on a hill has kinetic energy. D. Energy is defined as the ability to do work. E. The biological world gets its energy from the sun.
NPP is the difference between plant photosynthesis and respiration. Therefore, NPP quantifies the net absorption of what element(s) by living plants?
A. Phosphorus B. Carbon C. Nitrogen D. Oxygen E. Nitrogen, phosphorus, and potassium