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Studentka2010 [4]
3 years ago
9

Why we need blood cholesterol?​

Chemistry
2 answers:
Rzqust [24]3 years ago
8 0

Answer:

We need blood cholesterol because our body uses it to build your structure of cell membranes, make hormones like oestrogen, and testosterone, and to help your metabolism work well.

Ulleksa [173]3 years ago
4 0

Answer:

our cells need some cholesterol but too much cuz it can cause problems. HDL carries cholesterol to your liver, where it can be removed from the body.so it  helps protect your heart from atherosclerosis

Explanation:

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jasenka [17]

Answer:

Mitochondria - energy production in plant and animal tissue

Explanation:

The mitochondria is the power house of a cell. it contains adenosine-tri- phosphate or ATP molecules that produce energy through active transport. The mitochondria is responsible for energy production in both plant and animal cells

5 0
2 years ago
I cant seem to figure out ANY of these... help when you can pls :.)
Nonamiya [84]
The first one is some reaction with water even I am studying the same
7 0
3 years ago
A solid sample is hit with a hammer and breaks into jagged, irregular shards. What type of solid was it? A) molecular solid b) n
DaniilM [7]

I honestly don't know the answer

8 0
2 years ago
12.A piece of magnesium is in the shape of a cylinder with a height of 5.62 cm
yaroslaw [1]

Answer:

Density, d = 1.779 g/cm³

Explanation:

The density of a material is given by its mass per unit volume.

Here, height of a piece of magnesium cylinder, h = 5.62 cm

Its diameter, d = 1.34 cm

Radius = 0.67 cm

Volume of he cylinder,

V=\pi r^2 h\\\\\text{Putting the value of r and h, we get :}\\\\V=(\pi \times (0.67)^2\times 5.62)\ cm^3

d=\dfrac{m}{V}\\\\d=\dfrac{14.1\ g}{(\pi \times (0.67)^2\times 5.62)\ cm^3}\\\\d=1.779\ g/cm^3

So, the density of the sample is 1.779 g/cm³.

4 0
2 years ago
What is the enthalpy of reaction?
erma4kov [3.2K]

Answer:

Enthalpy is the amount of heat released or absorb. The total enthalpy can be found by subtracting the products' enthalpy by the reactants' enthalpy

4 0
2 years ago
Read 2 more answers
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