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3 years ago

Where does the urea in the urine come from?

Biology

2 answers:

Vesnalui [34]3 years ago

8 0

Answer:

Urea is produced when foods containing protein, such as meat, poultry, and certain vegetables, are broken down in the body. Urea is carried in the bloodstream to the kidneys, where it is removed along with water and other wastes in the form of urine.

Explanation:

adelina 88 [10]3 years ago

7 0

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The diploid generation of the plant life cycle always _____. See Concept 29.2 (Page 625) The diploid generation of the plant lif

marissa [1.9K]

The diploid generation of the plant life cycle always PRODUCE SPORES. See Concept 29.2 (Page 625) The diploid generation of the plant life cycle always PRODUCE SPORES. See Concept 29.2 (Page 625) is larger and more conspicuous than the haploid stage produces eggs and sperm is called the gametophyte develops from a spore produces spores

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3 years ago

In 1985 a biologist counted 750 pine trees in a 250 hectare forest. Using similar counting techniques, the biologist counted 1,2

Alisiya [41]

Answer:

Suppose that we have a given function f(x)

The average rate of change of the function between two values x₁ and x₂ is given by:

$r = \frac{f(x_2) - f(x_1)}{x_2 - x_1}$

a) We want to find the average (rate) of change on the size of population from 1985 to 1995.

We have that:

f(1985) = 750

f(1995) = 1500

Then we have:

$r = \frac{1500 - 750}{1995 - 1985} = 750/10 = 75$

This means that the population of trees increases, in average, at a rate of 75 trees per year.

b) What is the density of trees each year that they were counted?

This will be equal to the quotient between the number of trees and the area.

1985: number of trees = 750 pines

area = 250 ha

Then the density is:

D(1985) = (750 pines)/(250 ha) = 3 pines/ha

So 1985, there were 3 pines per hectare.

1990: number of trees = 1250 pines

area = 250 ha

Then the density is:

D(1990) = (1250 pines)/(250 ha) = 5 pines/ha

1995: number of trees = 1500 pines

area = 250 ha

The density is:

D(1995) = (1500 pines)/(250 ha) = 6 pines/ha

3) now we want to get the average change between 1985 and 1995 in the density, this will be:

$r = \frac{D(1995) - D(1885)}{1995 - 1985} = \frac{6 pines/ha - 3pines/ha}{10} = 0.3 pines/ha$

So, on average, each year the number of pines per hectare increases by 0.3

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3 years ago

Gelatin... Group of answer choices A. is a breakdown product of pectin B. gives gummy bears their chewiness C. is obtained from

Karolina [17]

Answer:

B and C are correct

Explanation:

Gelatin also referred to as hydrolyzed collagen.collagen is a structural protein in animal and undergoes hydrolysis to form gelatin.

Gelatin appears as a translucent, colorless and flavorless food ingredient used as gelling agents in food, drugs and cosmetics.

When dry it is bristle and becomes gummy when moist.

Gummy bears are known for their chewiness and gelatin gives them the chewiness.

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3 years ago

What is the best description of what viruses are made of?

Mazyrski [523]

The answer is C.

A virus is made up of or consists of a nucleic acid in varying quantity which may either be RNA or DNA.

The nucleic acid is surrounded by a protein shell called a capsid. The word capsid comes from the Latin word capsa which means box.The capsid and the nucleic acid within it are together referred to as nucleoprotein.The capsid is made up of small sub units called capsomeres.

In many viruses, the nucleoprotein makes up the whole virus. More complex viruses have one or more further enclosing structures also made mostly of protein. These structures are referred to as envelopes and each envelop is specific to a particular virus.

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3 years ago

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Which of these is the result of a government-regulated natural monopoly?

mina [271]

Which of these is the result of a government-regulated natural monopoly?
I think the correct answer is option C, Multiple installations of gas, water, and electric lines.

Consumers benefit from Federal Reserve oversight because they

I think the correct answer from the choices is option A, entrust their money to banks and other financial institutions

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3 years ago

Read 2 more answers