There were two approaches for the planetary paths. The idea about the planets revolving around the Earth, the planetary paths were plotted and were erratic. It was not relevant to the laws of motion and gravity. That fact was neglected by the believers in an Earth-centered Solar System.
Sun-centered Solar System was theorized by Copernicus. The paths assumed to be relatively circular (or elliptical).
Answer:Sleep helps keep your heart healthy
A regular sleep pattern can help to lower the levels of stress and inflammation to your cardiovascular system, which in turn can reduce your chances of a heart condition.
Explanation:
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Answer:
Skin cell has 10 chromosomes.
Sperm cell has 5 chromosomes.
egg cells has 5 chromosomes.
Explanation:
If the fruit fly egg has 5 chromosomes, then the skin has 10 chromosomes because skin has diploid i. e. double number of chromosome. There is always haploid or half number of chromosome present in the sex cells such as sperm and egg cells of any organism. When the sperm and egg cells fuse together they formed the organism which is a diploid i. e. double number of chromosome.
When a cell is immersed in a hypotonic solution, the volume of the cell will rise as it will cause will be a net inflow of water inside the cell. If the concentration of solutes outside the cell is lower as compared to inside the cell and when the solutes are not able to cross the membrane, then the solution is called hypotonic to the given cell.
The ability of an extracellular solution to induce water to osmotically enter or depart a cell is known as tonicity.
Three terms—hypertonic, hypotonic, and isotonic—are employed in order to evaluate if a solution would cause water to move into or out of a cell:
- If a cell is immersed in a hypertonic solution, it will lose volume because there will be a net flow of water out of the cell.
- A cell will shrink if it is submerged in a hypertonic solution because water will escape the cell.
- Since there is no net water movement in an isotonic environment, the cell's size remains constant.
- A cell will absorb water and swell when it is exposed to a hypotonic environment.
Learn more about osmosis here:
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<span>Living things respond to stimuli in the environment.</span>
