Membrane-bound vesicle that contains hydrolytic enzymes for digesting macromolecules and bacteria; used to recycle worn-out cellular organelles.
What will be an ideal response?
lysosomes
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Deoxyribonucleic acid is used for: (choose all that apply)
A. transmission of information. B. storage of information. C. biological catalysis. D. energy storage. E. cell-to-cell communication.
How does the spread of viruses differ between plants and animals?
Viruses must penetrate through cell walls of plant cells and not animal cells. Viruses spread faster in plants than animals because of photosynthesis. Viruses do not spread to plants, only animals. Viruses spread more slowly in plants than animals because of photosynthesis
How are covalent bonds in the cell rapidly broken?
A.) by energetically molecular collisions with potassium ions B.) by enzyme catalysis that is specific between protein and substrate C.) by energetically molecular collisions with water molecules D.) by the large electrical force across membranes
If you were able to look very closely at a portion of DNA and find methylated histones, you would
A. be looking at a region of inactive chromatin. B. be looking at a chromatin remodeling complex. C. be mistaken since only DNA can be methylated, not histones. D. be looking at a region of active chromatin.