Which choice below correctly matches organelle with function?
A) smooth endoplasmic reticulum–lipid production
B) lysosome–energy generation
C) cytoskeleton–recycling of materials
D) mitochondria–food generation
Answer: A
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Using sickle cell anemia and beta thalessemia anemias as an example, describe how a base pair substitution and a base pair deletion affect the beta globin protein
What will be an ideal response?
In animal cells and in the meristem cells of land plants, the nuclear envelope disintegrates during mitosis. This disintegration does not occur in the cells of most protists and fungi. According to our current knowledge of plant evolution, which group of organisms should feature mitosis most similar to that of land plants?
A) unicellular green algae B) cyanobacteria C) charophytes D) red algae E) multicellular green algae
Which is NOT a function of the kidneys?
A. regulating blood pressure by regulating salt balance in the blood B. production of water from oxygen and bicarbonate ions (HCO3) C. elimination of nitrogenous wastes including urea, uric acid, and creatinine D. hormone secretion to stimulate red blood cell production and regulate sodium ion levels E. monitoring and maintaining blood pH
In a transmission electron microscope, the "lenses" are
A) made of glass. B) thin films of metal. C) lasers. D) magnets. E) vacuums.