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3 years ago

What chemicals are proteins?

Biology

1 answer:

Paha777 [63]3 years ago

3 0

Answer:

Proteins are compounds that are composed of chemicals such as Carbon, Hydrogen, Oxygen, and Nitrogen.

Explanation:

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A steel bar has a mass of 4,000 kilograms and a volume of 0.5 cubic meters . Calculate its density. Write your answer as a whole

mixer [17]

The equation for density is:

$D=\frac{m}{V}$

where the mass is in grams and the volume is in $cm^{3}$ .

We are given 4,000 kilograms, and we know that there are 1,000 grams in 1 kilogram, so we need to multiply to convert to grams:

$4,000*1,000=4,000,000g$

We are also given 0.5 $m^{3}$ , and we need to convert to $cm^{3}$ . We know that there are 100 cm in 1 m, and since we are talking about cubic volume, we must also raise 100 to the 3rd power: $100^{3}=1,000,000cm$ . So now we know that there are 1,000,000 $cm^{3}$ in 1 $m^{3}$ . We need to then multiply 1,000,000 cm by 0.5 in order to find the volume that was given in the question:

$1,000,000*0.5=500,000cm^{3}$

So now that we have the correct units, let's plug them into the equation:

$D=\frac{4,000,000g}{500,000cm^{3}}$

$D=\frac{8g}{cm^{3}}$

So now we know that the density is 8g/cubic centimeter.

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3 years ago

Which factors are involved in earthquake formation? Check all that apply. plates moving rocks breaking stress that decreases fau

AfilCa [17]

The correct answers are:

- plates moving;

- breaking rocks;

- movement bellow the surface;

The earthquakes are a direct result of the plate tectonics. In order for an earthquake to appear, there should be a geologic activity caused by the movement of the tectonic plates. The movement of the tectonic plates causes a lot of pressure on the rocks. The rocks eventually break at certain places under the pressure. A they break, there's movement bellow the surface, or rather inside the crust, also referred to as adjustment. That movement and the release of power from it, causes lot of strong vibrations. The vibrations spread out and start shaking the ground in the surrounding area, which is actually the earthquake itself.

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3 years ago

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Help please I am begging I am stupid :(

Leto [7]

Answer:

Explanation: b

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3 years ago

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In addition to m cells, _____ can capture pathogens directly from the lumen of the gut.

9966 [12]

The answer to this question is "Dendritic Cells". In addition to m cells, the "Dendritic cells" in the epithelium can capture pathogens directly from the lumen of the gut without disturbing other cells and processes in the epithelium of the epithelial layer.

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3 years ago

The taxon species may be defined by reproductive isolation and _____.

ivann1987 [24]

<h3>Answer;</h3>

Morphology

The taxon species may be defined by reproductive isolation and morphology 

<h3>Explanation;</h3>

A taxon is a group of one or more populations of an organism.
Morphology is the form or the appearance of a particular organism, while reproductive isolation is the separation of organisms by some type of barrier.
Reproductive isolation is a type of mechanisms that prevent two or more organisms or populations from exchanging genes through reproduction. This occurs when two organisms or species are separated for too long such that they can no longer reproduce with each other due to different adaptation and changes in the environment.
Morphology and reproduction isolation may be defining characteristics of taxon of species.

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4 years ago