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Biology, 21.06.2019 14:30
Most scientific questions are based on opinions. hypotheses. observations. experimental data.
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Biology, 22.06.2019 21:40
According to the rna world hypothesis, rna acted as the genetic material and catalyzed reactions in ancient cells. what conclusion can you draw from this? a. this implies that dna and proteins aren't essential in cells today. b. this implies that rna can catalyze any chemical reaction that enzymes catalyze. c. this implies that if a cell has a problem with its dna, its rna can compensate for the damaged dna. d. this implies that dna and proteins evolved after rna.
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Biology, 22.06.2019 22:10
Red blood cells are responsible for transporting oxygen in the blood. people with sickle cell anemia were born with a defective gene that results in sickle-shaped red blood cells. individuals with the disease often suffer pain in their extremities due to the build-up of these cells causing blockages in the blood vessels. the shape of the blood cells also reduces the amount of oxygen transported in the blood.
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Biology, 23.06.2019 00:00
Slab pull is a type of tectonic plate movement that occurs due to the forces of mantle convection and results in the subduction of the lithosphere, causing
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What are examples of non-specific defenses?...
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