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Deffense [45]
3 years ago
5

Earth is made mostly of metals and rocks. where did this material come from?

Biology
1 answer:
Viktor [21]3 years ago
6 0
 comes  from the earth's crust<span />
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What are the role of all four types of lipids: fats, phospholipids, waxes, and steroids.
ycow [4]
Steroids
are complex structure four connected rings of carbon atoms. They are cholesterol which is in all body cells and used to synthesize other steroids:sex hormones, such as estrogen, and testosterone and several hormones from the adrenal glands.

Waxes
are comprised of an ester of a long-chain alcohol and a fatty acid. Many plants have leaves and fruits with wax coatings to help prevent water loss.

Phospholipids
consist of Glycerol portion and fatty acid chains. Only two fatty acids chains; in place of the third is portion that include a phosphate group. THe phosphate portion is soluble in water [hydrophobic] forms the ''head'' of the molecule, while the fatty acids portion is insoluble in water [hydrophobic] and forms a ''tail''.

Fats
to store energy for cellular activities. Carbohydrates fat molecules are composed of carbon, hydrogen and oxygen atoms.


6 0
3 years ago
The atomic number usually allows us to determine the amount of which two subatomic particles
Marysya12 [62]

Answer:

protons and electrons

5 0
2 years ago
A clay plate has a volume of 30.0cubic centimeters and a mass of 59.1grams. Calculate its density.
Nataly_w [17]

The density of the clay plate is  1970 kg m⁻³

the problem we are dealing with is related to density, which is the mass of a unit volume of a material substance. The formula for calculating density is d = M/V, where d is density, M is mass, and V is volume. Since we are provided with the volume of the clay plate which is 30.0cubic centimeters and the mass of the plate which is 59.1grams

so,V= 30 cm⁻³=3x 10-5 m and  M=  59.1grams= 0.0591 kg

Therefore, the density of the plate is:  M/V

=>d = 1970 kg m⁻³

To know more about density refer to the link  brainly.com/question/15164682?referrer=searchResults.

#SPJ1

5 0
11 months ago
Please answer I really need help
tatuchka [14]

Answer:

The answers to the blank spaces are numbered as follows:

1. Function

2. Nucleus

3. Mitochondria

4. ATP

5. Chloroplast

6. Glucose

7. Ribosomes

Explanation:

This question is describing the organelles found in a cell. An organelle is a structure that performs a specific FUNCTION (1) in a cell. There are different kinds of organelles with each possessing its own peculiar function. Some of them are as follows:

- NUCLEUS, which is regarded as the brain of a cell because it directs or controls a cell's activities just like the brain of an organism does.

- MITOCHONDRIA is an organelle that produces the energy storing compound called ATP (adenosine triphosphate), hence, it is called power house of the cell.

- CHLOROPLAST is an organelle found in plant cells that functions in the conversion of light energy (from sun) into GLUCOSE (chemical energy) in a process called PHOTOSYNTHESIS.

- RIBOSOMES is an organelle found in both prokaryotic and eukaryotic cells that serves as the site of PROTEIN production in a cell.

5 0
2 years ago
Explain the structure of DNA and function of DNA.
prisoha [69]

Answer:

Explanation: DNA is the information molecule. It stores instructions for making other large molecules, called proteins. and the function of DNA is To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies.

8 0
2 years ago
Read 2 more answers
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