All categories

3 years ago

Summarize chargaff’s rule in a sentence or two

Biology

1 answer:

inna [77]3 years ago

6 0

Answer:

adenine is equal to thymine and cytosine is equal to guanine.

Explanation:

ex: if the percentage of adenine is 30 then it’s the same percentage for thymine. ( a=t , c=g )

You might be interested in

Which of the following would most likely be found in a wide valley

iris [78.8K]

Answer:

Nothing

Explanation:

No options found and you asked us to pick from the following

7 0

3 years ago

What is the primary biomolecule that cells use for energy? Choose one below

Ulleksa [173]

the answer is ATP. ATP is the bi- product that cells can easily absorb 4 energy. the body digests the glucose first, whatever is left after that is ATP..

4 0

3 years ago

How does Gregor Mendel's work demonstrate support for the concepts of dominant and recessive alleles?

taurus [48]

From the proportions of phenotypes in the offspring. If Genes would be equal you would get 1/4 A, 1/4 B and 1/2 AB; but you often get 1/4 A and 3/4 B. I hope that this is the answer that you were looking for and it has helped you.

6 0

3 years ago

When you eat a meal, food is digested and monomers like glucose are transported throughout your body. food is transformed and us

Alchen [17]

Food molecules like lipids, proteins and polysaccharides are broken down enzymatically via digestion process, which occurs in our intestine cells (digestive system). Those large polymeric molecules are broken down into their monomer subunits—proteins into amino acids, polysaccharides into sugars, and fats into fatty acids and glycerol. Formed small organic molecules are now ready for the oxidation (a process that produces ATP and consumes O2) which occurs partly in the cytosol and in the mitochondrion. Oxidation processes include glycolysis and citric acid cycle which are differently required in different tissues. Nervous system (nerve cells) rely almost entirely on a constant supply of glucose from the bloodstream. In contrast, liver cells supply glucose to actively contracting muscle system which needs a lot of ATP energy.

4 0

3 years ago

Read 2 more answers

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