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Aleksandr [31]
3 years ago
5

Please please help on science test

Biology
1 answer:
marissa [1.9K]3 years ago
3 0

Answer:

With few exceptions, cellular membranes — including plasma membranes and internal membranes — are made of glycerophospholipids, molecules composed of glycerol, a phosphate group, and two fatty acid chains. Glycerol is a three-carbon molecule that functions as the backbone of these membrane lipids.

Explanation:

hope it help

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What usually compresses the sedimentary rock layers?
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The more sediment accumulates, the more pressure is put on the lower layers

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What do we call a specific variant of a character?<br> A.gene<br> B.trait<br> C.locus
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If science is to be defined at, science is a systematized body of knowledge. Science is where the organized set of facts were obtained and is used as a tool, model or paradigm to gather such evidential data. Science is not a fact but an existential body in which comprises the study of the anatomy and physiology of a certain object by the means of observation, hypothesis, experimentation, interpretation and conclusion of the gathered facts. Or what others would describe the scientific process.



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3 years ago
For a science experiment. John gradually added a sedium hydroxide (NaOH) solution to warm vegetable oil in a glass test tube. He
Marrrta [24]

The sodium hydroxide solution and vegetable oil underwent a chemical change.

<h3><u>Explanation:</u></h3>

The reaction between a base and a fat or fatty acid is called as saponification reaction. Here the base dissociates into the cation and hydroxyl ion. The hydrogen from the fatty acid of the oil reacts with the hydroxyl ion to form water which is basically the neutralization reaction. This cation now reacts with the rest of the fatty acid to form a bipolar molecule which is the soap. During the reaction, the solution becomes cloudy but with time, it again goes back to solution. The cloudyness appears because oil isn't soluble in water based solutions and the base is actually made solution in water.

Here the sodium hydroxide reacts with oil to form water and the soap molecule which is a chemical change.

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4 years ago
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