Answer:
<u>Option- </u> Passive transport.
- The movement or transport of medium across an area or membrane on the basis of there concentration is termed to be the main mechanism for providing all the vital resources for the cell and tissue survival inside the body.
Explanation:
- Osmosis involves the movement of water molecules across a cell membrane. Diffusion involves the movement of substances other than water across a cell membrane. In both of these processes, substances move from an area of high concentration to an area of low concentration. Thus, both diffusion and osmosis are forms of <u>Passive transport.</u>
Answer:
a thing or event that evokes a specific functional reaction in an organ or tissue.
Explanation:
Answer:
a substituted derivative of purine, especially the bases adenine and guanine present in DNA.
a colorless crystalline compound with basic properties, forming uric acid on oxidation.
The oxygen produced by the chloroplasts passes out the cell by Cellular Respiration. So the answer would be D :)
Answer:
After 6000 years, approximately 500 atoms of carbon-14 will be left in the femur bone of an animal which had 1000 atoms of carbon-14 when the animal died.
Explanation:
The half-life of a radioactive isotope of an element is the time taken for half the atoms present in a given amount of the element to undergo decay or disintegration. For example, the half-life of carbon-14 isotope is 5730 years. This means that, if there are 100 atoms of carbon-14 present in a given sample of a material, in the next 5730 years, approximately, 50 atoms of carbon-14 will be left in the material.
Since the half-life of radioactive isotopes are constant, these radioactive isotopes are used in the determining the ages of ancient life-forms as well as rocks.
In the given example, after 6000 years, approximately 500 atoms of carbon-14 will be left in the femur bone of an animal which had 1000 atoms of carbon-14 when the animal died.
