In the visual pathway information is sent from the photoreceptor cells in the retina directly to the
ganglion cells. Indicate whether the statement is true or false.
F, bipoplar
You might also like to view...
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.
The C/N ratio of litter is important because litter with a
A) high C/N ratio does not contain enough nitrogen for decomposers, resulting in immobilization. B) low C/N ratio does not contain enough nitrogen for decomposers, resulting in immobilization. C) high C/N ratio cannot be utilized by most organisms without extra carbon available. D) low C/N ratio cannot be utilized by most organisms without extra carbon available.
What was the result of Rolls et al. (1990) human experiment of sensory-specific satiety?
What will be an ideal response?
The ribosomes in eukaryotic cells are larger than the ribosomes in prokaryotic cells
Furthermore, eukaryotic ribosomes are not affected by some chemicals that affect prokaryotic ribosomes, a fact that can be put to good use by microbiologists seeking new antimicrobial drugs. An example of this is the antibiotic erythromycin, which prevents protein synthesis by prokaryotic ribosomes but does not affect eukaryotic ribosomes at all. Thus, erythromycin kills bacteria but does not affect humans or other animals. Using this information, which of the following would be expected and would support the endosymbiont hypothesis? A) Mitochondrial ribosomes will be larger than prokaryotic ribosomes. B) The ribosomes in chloroplasts will be sensitive to erythromycin. C) Mitochondria and chloroplasts will not have ribosomes. D) Mitochondrial ribosomes will be smaller than prokaryotic ribosomes.