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Reil [10]
3 years ago
15

Which of the following undergoes change during a chemical reaction?

Biology
1 answer:
galben [10]3 years ago
3 0
D. chemical bonds between reactants.

In a chemical reaction, the reactants break and establish new bonds between atoms by exchanging electrons. The overall atomic mass doesn't change. Element identities only change with a loss or gain of protons, which happen in nuclear reactions. The total number of electrons does not change, just become exchanged or shared between atoms.
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In normal skeletal muscle tissue, binding of acetylcholine to its receptors at the neuromuscular junction results in:
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<span>Answer: Opening of Na+ and K+ Explanation: Acetycholine binding opens Na+ and K+ ion channels in the receptors that allow simultaneous passage of Naâş into the muscle fiber and Kâş out of the muscle fiber. More Naâş ions enter than Kâş ions exit, which produces a local change in the membrane potential called the end plate potential. Binding of acetycholine to receptor proteins opens Na+ and K+ channels resulting in jump in resting membrane potential(RMP) from -90mV to +75mV forming an end-plate potential (EPP).</span>
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3 years ago
Which explanation justifies why the theory of evolution is a theory and not a law? (4 points) a The theory of evolution predicts
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Answer:d.Additional evidence will change the theory of evolution into a law.

Explanation:

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3 years ago
Why can water pass through the cell membrane?
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Please help fast!
Harman [31]

The calcium present in the milk acts as a fertilizer, for the growth of pumpkin size.

Explanation:

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Milk gets readily absorbed by the roots due to the solubility of nutrients in milk.

The root hairs of the plant transport the calcium to the other parts like stem.

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Non-scientific question:

The Hypothesis here is those pumpkin plant fed with milk are bigger on size.

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Pumpkin plants fed with milk and some plants fed with water are compared, we get the result that giant pumpkins are one that are fed with milk. This is  statistical analysis.

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Kelp is a kind of: brown algae fungi plant red algae
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