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elixir [45]
3 years ago
12

3. According to data from experiments with radioactive thymidine, the first labeled mitotic cells appear about 4 hours after the

labeling period ends. From these data, researchers concluded that G2 lasted about 4 hours. WHY?
Biology
1 answer:
ValentinkaMS [17]3 years ago
5 0

Answer:

Explanation:gkcgvhkjghfxcgjvhbknlkml,l;joiiutysrgxfm vnbm,m./lkpiu98y7t6rudthcgvbj,nkmlkpo07t6r5dytrxfcgn bm

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A full explaination of osmosis. Please I need it fast​
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Osmosis is the movement of a solvent across a semipermeable membrane toward a higher concentration of solute (lower concentration of solvent). ... When a cell is submerged in water, the water molecules pass through the cell membrane from an area of low solute concentration to high solute concentration.

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The semifluid material that fills most of the cell outside the nucleus is called?​
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Drag the tiles to the correct boxes to complete the pairs,
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3 years ago
Genetic drift tends to occur in populations that
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Genetic drift may occur when a small group of individuals colonize a new habitat. True or false. Two populations that have overlapping ranges can remain reproductively isolated through behavioral isolation or temporal isolation from each other.

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3 years ago
"Explain how chemical energy for use in the cell is generated by electron transport and chemiosmosis"
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Answer:

Explanation:

The electron-carrier proteins are arranged in the inner mitochondrial wall. A dehydrogenase enzyme (think of it as the first protein of the electron-transport chain) oxidises NADH2 (which is the reduced coenzyme NAD) and/or FADH2 (reduced coenzyme FAD). The energy from the oxidation process is used to pump hydrogen ions from the matrix to the inter-membrane space of the mitochondrion. Because of this, gradient of hydrogen ion concentration builds up across the inner mitochondrial membrane, which generates a potential difference across the membrane. The protons then flow back to the matrix through an enzyme called ATP synthase (also called ATPase). (This is called chemiosmosis because a chemical substance (H+) moves across a membrane, down the concentration gradient.) This releases energy needed for the ATP synthase to phosphorylate ADP, i.e. make ATP (chemical energy for use in the cell) from ADP and inorganic phosphate.

Note: Bolded things are important, everything else is just additional clarification in case you need it. This is the last major phase of cellular respiration. If you want a deeper insight into the process, I suggest you read a bit about glycolysis and Krebs cycle.

7 0
2 years ago
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