What would you expect to happen in an individual with shorter-than-normal telomeres?
A) The telomeres would be continually rebuilt after each round of cell division.
B) Cells would undergo more rapid cell division than usual.
C) Cells and tissues would begin to appear aged soon after birth.
D) Cells and tissues would appear to age more slowly.
E) Cells would become cancerous.
C) Cells and tissues would begin to appear aged soon after birth.
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What would you call an aquatic organism’s avoidance of high concentrations of a chemical in the water?
What will be an ideal response?
Four of the five items listed below are cytoplasmic
organelles. Select the exception. a. nucleolus b. mitochondrion c. ribosome d. Golgi body e. chloroplast
Which of the following components of the dermis is
incorrectly matched with its usual function? a. blood vessels; nutrient supply b. sweat glands; hormone secretion c. oil glands; lubrication of hair and skin d. hairs; insulation e. receptors; pain
You buy a new house and the front yard has some really nice rose bushes, but they are surrounded by lots of weeds! You don't really want to try and dig them out by hand and your nice new neighbor comes over with a bottle of weed killer. He says it shouldn't kill your roses, but you, knowing that weeds and rose are pretty similar physiologically decide to do some research. You find out the active ingredient in the weed killer causes the stomata close when in contact with the chemical.
What would be the results of the chemical being sprayed on your roses? Explain which parts of photosynthesis would be affected, what those effects would be, and how would the plant be affected? Would it be likely to hurt your roses?