Answer: D - all of the above
Explanation:
Cytosine (C) is paired with Guanine (G) according to the base pair rule just as Adenine (A) is paired with Thymine (T).
The sugar in DNA is deoxyribose which is a modified form of ribose(also sugar). It simply is a ribose sugar which has lost an oxygen atom hence “deoxyribose”. Deoxyribose is one of the components that make up the DNA backbone.
Hydrogen bonds exist between bases. The importance of these hydrogen bonds is to hold the complementary strands of DNA together.
Producers provide oxygen gas as a result from photosynthesis - something that almost all other organisms at high trophic levels need
Answer: Option A
<u>Explanation:</u>
As temperature increases the rate of enzyme activity increases until it reaches approximately 37 degrees Celsius. As temperature increases beyond 37 degrees Celsius, the enzyme activity decreases. The activity decreases because the enzyme denatures.
Any enzyme has certain temperature, pH and pressure to maintain its activity. Only at the ideal or ambient parameters the enzyme works. Most of the enzymes that are present in the human body gets activated by 37 degrees and gets denatured beyond that temperature.
