Which of the following statements about photoreceptors is NOT true?
A. A compound eye as seen in insects has many different visual units, each containing a lens.
B. Photoreceptors differ in complexity in different kinds of animals.
C. Image-forming eyes are found only in vertebrates.
D. The simplest photoreceptors only recognize the presence and intensity of light.
E. Eyespots in planaria allow the direction of light to be determined.
Answer: C
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Of the 23 pairs of human chromosomes, 22 pairs are homologous and are found in both males and females. These are called ________.
A. bivalents B. autosomes C. recombinant chromosomes D. somatic chromosomes
Both Chagas' disease and African Sleeping Sickness are ________-borne diseases.
What will be an ideal response?
Memories are associated with which of the following parts of the brain?
a. association areas of the cerebellum b. limbic lobe of cerebrum c. suprachiasmatic nucleus d. primary sensory areas of parietal lobes e. cerebral cortex
Atherosclerosis
A) is caused by a diet high in salt. B) causes a loss of plaque from the walls of the arteries. C) reduces blood flow in arteries. D) is a condition of the veins. E) is another name for high blood pressure.