when light energy excites electrons in photosystem 2, where do the electrons to replace them come from

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Answer 1

Answer: Hi There! :)

When light energy excites electrons in photosystem 2, where do the electrons to replace them come from?

ATP

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What happens before mitosis occurs? A. The cell takes a rest./ B. Cytoplasm from the parent cell becomes two daughter cells./ C. The cell grows and makes a copy of its genetic material./ D. The genetic material of the parent cell multiplies into two sets.
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How many gallons of water per day does the average American Family of 4 use? 80 gallons
160 gallons
240 gallons
320 gallons

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The average American Family uses around 320 gallons a day.
Hope i helped!
-Sammy

about 400gallons so "D" is the best answer

A food chain is made up of interrelated food webs. true or false

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The answer to your question is False

The smallest unit that retains the properties of an element is a(n) _____.

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The smallest unit that retains the properties of an element is an atom. An atom is the smallest unit of matter that has the element's properties and every state of matter is composed of atoms.

The given blank can be filled with the atom.

An atom is the minutest component of a matter, which exhibits the characteristics of a chemical element. Every liquid, solid, plasma, and gas comprises ionized or neutral atoms.

The atoms are extremely small, the usual sizes are about 100 picometers. Each atom contains a nucleus and one or more electrons combined with the nucleus. The nucleus is formed of one or more protons and usually a same number of neutrons.

Where does the heat from your body comes from?

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Every cell in the body produces heat as they burn up energy. Some organs will be on more than others, such as the brain, or muscles if you are exercising, therefore they get hotter. This needs to be spread around the body and this is done by the blood, which heats some organs and cools others.

What is another name for haploid cells?

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I do believe Gametes or sex cells

Another name for haploid cells is Gametes.

What organelle is the location of ribosome production

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In bacteria ribosomes are produced in the cytoplasm while in eukaryotric cells the NUCLEUS and CYTOPLASM are both sites of ribosome synthesis.

Note: Ribosomes are crucial organelles in any cell because they are the site of protein synthesis and protein is what makes up enzymes and other important cell structures.

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