The correct order in which a light ray reaches the retina is:
A. lens-vitreous humor-cornea-aqueous humor-retina.
B. lens-aqueous humor-cornea-vitreous humor-retina.
C. cornea-vitreous humor-pupil-lens-aqueous humor-retina.
D. lens-cornea-aqueous humor-vitreous humor-retina.
E. cornea-aqueous humor-pupil-lens-vitreous humor-retina.
Answer: E
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Why is the smooth endoplasmic reticulum unable to synthesize proteins?
A) No ribosomes are attached to its surface. B) There is no supply of free amino acids that it can easily access. C) It stores calcium, which is a known inhibitor of protein synthesis. D) It has no DNA to direct synthesis of proteins.
Which of the following are maternal effect genes that control the orientation of the egg and thus the Drosophila embryo?
A) homeotic genes B) segmentation genes C) egg-polarity genes D) morphogens E) inducers
Which type of injury is treated first with an ice pack and later with a heating pad?
a. carpal tunnel syndrome b. a joint dislocation c. a joint sprain d. sublaxation e. torn muscle
Construct a table with the six kingdoms listed. Include several diagnostic features of each kingdom
and an important ecological role of organisms found in each kingdom. What will be an ideal response?