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otez555 [7]
3 years ago
12

A scientist carried out an experiment to follow the movement of carbon atoms within animal cells. To do this, the scientist adde

d 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.
Biology
1 answer:
ollegr [7]3 years ago
8 0

Answer:

B? Hope this helps, sorry if it's wrong.

Explanation:

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RSB [31]

Answer:

choloroplast

Explanation:

chloroplasts contain chloropyll, the green pigment that absorbs sun energy, therefore its the organelle responsible for photosynthesis

5 0
2 years ago
Explain the difference between a monohybrid cross and a dihybrid cross, and give an example of each.
Kay [80]
Monohybrid crosses only look at one genotype. Whereas dihybrid crosses look at two genotypes.
An example of a monohybrid cross would be AA x aa, where A represents the dominant allele, and its phenotype is the colour red, and a represents the recessive allele, and its phenotype is the colour white. 
An example of a dihybrid cross would be SSYY x SsYy, where the letter S represents the size, dominant phenotype is large, recessive is small, and Y represents the colour, dominant phenotype is yellow, recessive is green.
4 0
3 years ago
What is the water cycle and explain along with the process!​
Ann [662]

Answer:

The water cycle is a process in which water is lost from water bodies and then it again comes back to earth in form of rain. This is how I know it, but the explanation is correct.

Explanation:

See,

  • Water from water bodies evaporates and becomes water vapour due to heat
  • This then reaches high altitudes, where it condenses with dirt to create small droplets thingy
  • This then creates a cloud, which on correct saturation with water, makes it rains.

This cycle goes on continuously creating a cycle which is termed the water cycle.

Hope it helps

BYE

5 0
2 years ago
Which of the following identifies the structural hierarchy that makes up the pulmonary system in order of increasing complexity?
Tems11 [23]

Answer:

B, lung cell, lung tissue, lung, pulmonary system

Explanation:

Lung cells are also called as pleural cells. Lung cells to form lung tissue which then forms the lung and lung and its function forms the pulmonary system. The complexity increases from cell to organ system.

Pulmonary system plays a major role in respiration. Lung cells once damaged are slow to regenerate. Alveoli are the sacs in the lungs that take up the oxygen from the inspirited air and then transfers it to the tissue.

5 0
3 years ago
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The most important reason for food handlers to understand and apply food safety knowledge is to prevent the spread of illnesses through food.
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3 years ago
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