Answer:
The first three look like clear quartz then the last two might be obsidian
Explanation:
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A semipermeable membrane is a membrane that allows certain substances to pass through it. The most accurate definition is the third choice, "It is a barrier with tiny openings that let some, but not all, materials pass through." hope this helps:)
One advantage of genetic engineering is the production of valuable proteins: recombinant DNA made possible the use of bacteria to produce proteins of medical importance such as genetically engineered human insulin which is of great importance.
Another advantage is the production of vaccines. Vaccines produced by genetic engineering offer an advantage that the microbial strains from which proteins are extracted do not contain complete viruses and thus there is no risk of accidental inoculation with live virus.
The answer is A: The rough ER has visible ribosomes.
Harvest thyme just before the plant flowers for the best flavor. Once the plant begins to flower, the herb begins to lose some of its flavor and potency. The thyme can still be used after it flowers, just expect a milder flavor.
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