Pompe disease is related to the inability to metabolize lactose. Indicate whether the statement is true or false
F
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In a study of tadpole coloration, you noticed that certain percentage of tadpoles in a population displayed a decreased ability to shift from dark coloration at night to light coloration during the day
These individuals were studied and found to have the normal number of melanophores that produced normal amounts of melanin pigment granules. You remember reading about melanophores and pigment granule transport in cells and that it involved the cytoskeleton. You investigated the cytoskeleton and found that all three elements, including the one you suspected, are completely normal. You then decide to look at the motor proteins to see if the cause might lie with one of them. Which of the following would be your hypothesis? A. The melanophores in these tadpoles have partially or non-functional kinesin that would normally transport organelles along microtubules to the center of the cell. B. The melanophores in these tadpoles have partially or non-functional kinesin that would normally transport organelles along microfilaments to the center of the cell. C. The melanophores in these tadpoles have partially or non-functional dynein that would normally transport organelles along microtubules to the center of the cell. D. The melanophores in these tadpoles have partially or non-functional dynein that would normally transport organelles along microfilaments to the center of the cell. E. The melanophores in these tadpoles have partially or non-functional myosin that would normally transport organelles along microfilaments to the center of the cell.
A developmental defect in the eye which prevents light from entering the eye but does not involve the lens would be a defect in the
A. cornea. B. retina. C. optic nerve. D. iris. E. lens.
Four of the five actions listed below are responses to
the loss of body heat. Select the exception. a. panting b. blood routed to deeper tissues c. constriction of peripheral blood vessels d. increased respiration e. increased metabolic rates
The axonemal "9 + 2" pattern of microtubules is nine ________ surrounding a(n) ________
A) outer doublets; central pair B) basal bodies; inner two C) central tubules; double pair D) B tubule structures; middle two E) triplet microtubules; basal bodies