A scientist carried out an experiment to follow the movement of carbon atoms within animal cells. To do this, the scientist added glucose with radioactively labeled carbon atoms to a culture of cells growing in a Petri dish.

After a certain amount of time had passed, the scientist tested parts of cells for radioactivity. Radioactivity was detected in various biomolecules, including DNA.


Which of the following statements best explains why radioactivity was detected in the DNA?
Choose 1 answer:

(Choice A)
The DNA was in close proximity to the radioactive glucose during its formation.

(Choice B)
Carbon atoms that were once in the radioactively labeled glucose were used to form DNA.

(Choice C)
The DNA was made up of radioactively labeled glucose subunits.

Answer:

The oceans, lower atmosphere and contitents are the part of the Biosphere.

Answer:it affected it by being hot

Explanation:

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The bombardment of the earth by solid particles affects its temperature because the bombardments release heat and make the earth warmer, and due to this, the early earth was hotter.

The Earth is the planet in the solar system that moves around the sun, and it has living plants and animals along with non-living substances such as soil, air, water, etc. Most of the earth is covered with water and the earth has various populations, biomes, and biodiversities, and all of this biodiversity is due to changes in climate and geography, which result in the presence of various animals.

Hence, the bombardment of the earth by solid particles affects its temperature because the bombardments release heat and make the earth warmer, and due to this, the early earth was hotter.

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Answer:

Credit:

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C. The crystals are larger than those formed closer to Earth’s surface.

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If the magma cools quickly, the crystals do not have much time to form, so they are very small. If the magma cools slowly, then the crystals have enough time to grow and become large. Some granites contain minerals which are up to one meter (3 ft) across!

Which is another way to describe a gene?

A: a sequence of three base pairs

B: a unit of inheritance that transmits information

C: a short segment of information that is translated and taken out of the nucleus

B: a unit of inheritance that transmits information

A gene is the basic unit of heredity that occupies a specific position on a chromosome. Each is composed of linearly arranged nucleotides.

In another way, a gene may be described as a unit of inheritance that transmits information. Thus, the correct option is B.

A gene may be defined as a stretch of a segment that is present in the chromosome and helps to determine a characteristic.

Genes are present in the chromosomes of an organism. Genes carry out the instructions to construct molecules called proteins which induce specialized operations and build up the structure of living organisms.

Therefore, the correct option for this question is B.

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_ _ _ _ _ _ _ _ _ _ _

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Answer:

a - Gg

Explanation:

heterozygous means different, and G and g are different.

Answer: comets are snowballs and frozen gasses what meteorites are made rocks

Explanation:

Answer:

Cellular respiration and photosynthesis.

Explanation:

Carbon dioxide is put out by the fox and the tree absorbs it. The tree puts out oxygen and the fox inhales it.

Answer:

tree leaves

Explanation:

Answer:

cell wall and plasma membrane are found in both bacteria(prokaryotic) and plant (eyokaryotic).i think it was helpful

Answer:

bennett is a 12-year-old boy whose bmi-for-age falls at the 90th percentile on the bmi-for-age growth chart. bennett is

Explanation:

bennett is a 12-year-old boy whose bmi-for-age falls at the 90th percentile on the bmi-for-age growth chart. bennett is

Fixation or volatilization, mineralization, nitrification, immobilization, and denitrification.

The sequence is as follow: Fixation, Nitrification, Assimilation, Ammonification and Dentrification.

The nitrogen cycle is the process by which nitrogen is converted into different chemical forms and moves between the biosphere, atmosphere, and geosphere. The stages of the nitrogen cycle, in order, are:

Nitrogen fixation: Nitrogen gas in the atmosphere is converted into a usable form, such as ammonia or nitrite, by nitrogen-fixing bacteria.

Nitrification: Ammonia or nitrite is converted into nitrate by nitrifying bacteria.

Assimilation: Nitrate is taken up by plants and converted into organic nitrogen compounds, such as proteins and nucleic acids, through the process of assimilation.

Ammonification: Organic nitrogen compounds are broken down by decomposers, such as bacteria and fungi, into ammonia or amino acids.

Denitrification: Ammonia or nitrite is converted back into nitrogen gas by denitrifying bacteria, completing the cycle.

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Answer:

Small Intestine

Explanation:

Most digestion and absorption of nutrients take place in the small intestine.

The digestion of food materials starts from the mouth, depending on the class of the food.

The digestion is aided by a variety of enzymes. From the mouth, digestion continues through the gastrointestinal tract vis a vis the esophagus, the stomach, large, and the small intestine.

However, most digestive activities happen in the small intestine as well as most absorption of nutrients into the bloodstream.

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Answer:

Well  im sure they do... maybe they dont use allot it though, like if they forget about some of the wood or they are done making a  dam

Explanation:

The beaver becomes a nuisance when they interfere with man's use of the land. Dams can flood large areas of agricultural land or forest, roads can be washed out and cultivated trees and shrubs may be damaged or destroyed.

Answer:

coal, petroleum

Explanation:

they are obtained as dead organic substances fall into swamps and after a long period of time they decay into substances that can be used as fuel after refining process.

Answer:

Non-renewable energy is energy from fossil fuels such as coal, crude oil, natural gas, and uranium.

Explanation:

Answer: False

Explanation: If your doing this on ixl GG.2 this is the correct answer.

The muscle would contract with isotonic force. The muscle would contract isometrically. As a result of the actin-myosin cross bridges' inability to persist, the muscle would relax and lengthen. Thus, option D is correct.

Efrapeptins and aurovertins, two types of antibiotics, prevent ATP synthase from producing or breaking down ATP.

The rotor, the core cavity of the enzyme, and the particular -subunit catalytic site are where the efrapeptins bind to ATP synthase. This is because there won't be an ATP synthase-driven proton gradient.

The inability of the inner mitochondrial membrane to remain impermeable to protons or the cessation of electron transport will prevent oxidative phosphorylation from taking place.

Therefore, muscle contract with isotonic force.

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Answer:

Biogas is composed mostly of methane (CH4), the same compound in natural gas, and carbon dioxide (CO2).

Explanation:

Answer:

B

Explanation:

Answer:

True as a technonerd it is ive study it

Explanation:

Answer:

ribosomes

Explanation:

ribosomes translate RNA into protein

Answer:

Maps have the advantage of objectivity and presentation of all phases of mitosis, but their disadvantage is the suppression of information, which can confuse students. A scientific model (or map) must be able to present a scientific process or element as it actually occurs, or as close to it

Explanation:

Answer:

Mitochondria

Explanation:

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It can be deduced that the globalization of the automobile industry is beneficial to the American economy.

Globalization simply means the process by which businesses develop international influence or begin its operations on an international scale.

The globalization of the automotive industry is important as it led to ba increase in the number of vehicles that's were imported into the country.

Globalization gives more individuals personal freedom and access to jobs. This also led to the development of better roads and transportation.

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Answer:

After World War II, economic growth, population growth, rapid suburbanization, and the closing of some public transit systems led to more reliance on personal vehicles for transportation. The number of cars and trucks in the United States increased dramatically, as did the number of highways. One result of the rapid increase of motor vehicles was air pollution, especially in cities, that had serious impacts on public health and the environment.

Answer:

Each ribosomal subunit has three binding sites for tRNA: designated the A (aminoacyl) site, which accepts the incoming aminoacylated tRNA; P (peptidyl) site, which holds the tRNA with the nascent peptide chain; and E (exit) site, which holds the

Explanation:

Each ribosomal subunit has three binding sites for tRNA: designated the A (aminoacyl) site, which accepts the incoming aminoacylated tRNA; P (peptidyl) site, which holds the tRNA with the nascent peptide chain; and E (exit) site, which holds the