The sides of the double helix of the DNA are made up of sugar and phosphate backbone. The sugar is deoxyribose in case of DNA and ribose in case of RNA. The bridges are formed of the nitrogenous bases; adenine, guanine, thymine, and cytosine. RNA contains uracil n place of thymine.
Photosynthesis? I think this is right
Absolute Dating
AKA. RADIOMETRIC DATING
We can learn about the past by studying the present.
The Principle of Uniformitarianism states that current geological processes are the same processes that were at work in the past. This principle was proposed by Charles Lyell in the 1800's
Absolute Dating
Involves finding the absolute age (actual age) of a rock or fossil.
Elements that emit particles and energy are radioactive.
As radioactive elements emit particles and energy, they form new isotopes or elements.
For cellular respiration, the solution needs to be provided with glucose and optimum oxygen supply.
Explanation:
The cellular respiration uses the simplest form of food i.e. is glucose in its first step of glycolysis so, the food source must be in simpler form in the solution. Also, cellular respiration takes place in the presence of oxygen so optimum level of oxygen is to be supplied also temperature plays a key role so it also needs to be maintained.
