Before a cell can divide, it must copy one NUCLEOTIDE at a time in a process called DNA replication.
DNA replication is the process by which two identical DNA molecules are formed from one single, original DNA parent molecule. DNA replication takes place in all living organisms and is the basis for inheritance. During this process, the DNA make a copy of itself by copying all the nucleotide that are present in it.
Answer: C. The red blood cells released water through osmosis. The release of water helped the blood cells keep a similar concentration of solutes as the outside solution.
Explanation:
Osmosis is a process whereby water molecules move from an area where they are in higher concentration than a solute to an area where they are in lower concentration. They do this by moving through a selectively-permeable membrane.
With sugar added to the solution, the water in the red blood cells will have a higher concentration of water in the cells than the solution so water molecules will move from the cell - through the cell membrane - to the solution. They will keep doing so till the concentration of solutes are more or less similar in both the cells and the solution.
Answer:
The correct answer is e it depends primarily on positive feedback.
Explanation:
The term homeostasis deals with maintenance a constant or steady physiological state in our body.Homeostasis helps to maintain the level of all bio-active compounds such as hormones,vitamins,metabolites,antibodies,minerals within their normal cellular range.
it is because disturbance or hamperence of normal cellular level of bio-active compounds cause various physiological abnormalities in our body for example increase blood glucose level results in diabetes.
The term homeostasis depends on both positive feedback(to stimulate the production of bio-active compounds) and negative feedback(to inhibit the formation of bioactive compounds) according to our body"s need.
Enzymes are very sensitive to temperature and pH.
An enzyme will not function well or at all if it is at the wrong temperature or pH level. However, there is no set range for all enzymes; every enzyme is different and has their own range. For example, the pH levels under which stomach enzymes work best would be vastly different from the pH levels under which intestinal enzymes work.
Hope this helps!!
