In contrast to eyes, the eyespots of most invertebrates
cannot
a. detect light.
b. distinguish darkness from daylight.
c. form distinct images.
d. discern shadows.
e. possess photoreceptors.
Answer: c
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The mechanism by which antigen-reactive cells respond to foreign antigens while ignoring self-antigens is called clonal
A) selection. B) deletion. C) anergy. D) expansion.
Which of the following statements is true regarding energy drinks?
A. The Food and Drug Administration (FDA) ensures that claims made by drink manufacturers are verified. B. Energy drinks are classified as food by the Food and Drug Administration (FDA). C. Energy drinks claim to increase energy levels, mental awareness, and reduce muscle fatigue. D. The Food and Drug Administration (FDA) heavily regulates energy drinks. E. All energy drinks must contain vitamins, food additives, and stimulants, including caffeine.
Crossing over occurs between chromatids of homologous chromosome pairs. Indicate whether the statement is true or false
What are the two general types of membrane proteins?
What will be an ideal response?