Answer:
1. It is present as the outermost layer in animal cells and lies below the cell wall in plant cells.
2. The cell membrane surrounds the cytoplasm of living cells, physically separating the intracellular components from the extracellular environment.
3. The cell membrane is semi-permeable, ie, it allows some substances to pass through it and does not allow others.
Explanation: The cell membrane (or plasma membrane) surrounds all living cells, and is the cell's most important organelle. It controls how substances can move in and out of the cell and is responsible for many other properties of the cell as well.The membranes that surround the nucleus and other organelles are almost identical to the cell membrane. Membranes are composed of phospholipids,proteins and carbohydrates arranged in a fluid mosaic structure,
Answer: small protects cell and let's things in
Explanation: because.
Answer:
they are all non-green plants
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When NAD+ becomes NADH, it is being reduced.
NAD+ is a coenzyme that is involved in many metabolic reactions. It is a dinucleotide, meaning that it is made up of two nucleotides. The nucleotides are nicotinamide adenine dinucleotide (NAD) and adenosine diphosphate (ADP).
NAD+ is oxidized when it loses an electron. This leaves the nicotinamide ring with an extra hydrogen atom, which gives NADH its name. NADH is a reduced form of NAD+.
The reduction of NAD+ is a necessary step in many metabolic reactions. For example, NADH is used in glycolysis, the process by which cells break down glucose to produce energy. NADH is also used in the Krebs cycle, the process by which cells break down carbohydrates, proteins, and fats to produce energy.
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NAD+ accepts a hydrogen ion (H+) and two electrons (2eā), as it becomes reduced to NADH + H+. The NADH moves to the electron transport chain and donates a pair of electrons (becomes oxidized) to the first compound in the chain.
Explanation: