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MariettaO [177]
3 years ago
11

During photosynthesis, plants take in carbon dioxide, water, and energy from the sun and produce carbohydrates and oxygen. Which

of the following statements best explains how plants follow the law of conservation of mass during photosynthesis?
The amount of each element in the reactants equals the amount of each element in the products.

The number of carbon dioxide molecules taken in exactly equals the number of carbohydrate molecules produced.

The plant uses the carbon dioxide gas, liquid water, and energy to produce a solid carbohydrate.

The plants mass does not increase or decrease as a result of photosynthesis.
Biology
1 answer:
zzz [600]3 years ago
6 0
The amount of each element in the reactants equals the amount of each element in the products is the correct one. Could u Mark me brainliest and thnx
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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

7 0
3 years ago
Water molecules flow
Nonamiya [84]

Answer:

Osmosis

Explanation:

Water molecules move in and out of a cell through osmosis.

8 0
3 years ago
A 7-year-old boy presents complaining of occasional intermittent lower abdominal pain over the last several weeks associated wit
soldier1979 [14.2K]

Answer:

Polyethylene glycol.

Explanation:

The abdominal pain might occur in the area of the pelvic regions and the chest area. The lower abdominal pain is common in children that might occur due to the constipation.

The increase or the presence of the polyethylene glycol in the abdomen can cause pain. This affects the bowel movements, bloating, vomiting, diarrhea and in excess condition may also cause the rectal bleeding in the children as well as in adult.

Thus, the answer is polyethylene glycol.

8 0
3 years ago
What produces genetically unique daughter cells?
zubka84 [21]

Genetic Recombination.

8 0
3 years ago
The GO is a stage outside of the cell cycle commonly referred to as the "resting stage" because
Liono4ka [1.6K]

Answer:

G₀ being a stage of the cell cycle that is the resting stage, where there is no cell division, the cells that would remain in the G₀ stage throughout life are the neurons (option c).

Explanation:

In the G₀ phase, considered outside the cell cycle, there is cell metabolic activity but no cell division, since cyclins and cyclin-dependent kinases disappear. Some cells, such as neurons, do not undergo cell division throughout the life of an organism, so they remain in G₀.

In some organs, such as the liver, the hepatocyte may remain in G₀ until the organ receives an injury, and may regenerate by cell division. This is not the case of neurons, which maintain a constant quantity throughout life.

The other options are not correct because:

<em>     a. </em><em><u>Cancer cells</u></em><em> are characterized by a very active and uncontrolled cell division process.</em>

<em>     b. </em><em><u>Liver cells</u></em><em> can remain in G₀, but cell division can be activated when required.</em>

<em>     d. </em><em><u>Epithelial cells</u></em><em> are constantly dividing, since it is a tissue that undergoes frequent cell replacement.</em>

4 0
3 years ago
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