Answer:a
Explanation: because naturally it occurs anytime it wants to
The greek word bio means indicating or involving life or living organisms and logia means the study of
Answer:
A purine always forms a complementary base pair with a pyrimidine.
Explanation:
Purine bases such as Adenine pair specifically with Thymine , a pyrimidine base forming two bonds; just as Guanine pair specifically with Cytosine forming three bonds.
This specific base pairing are complimentary in nature and grants stability to the DNA.
Answer:
Photosynthesis remove the carbon dioxide from atmosphere and release oxygen while cellular respiration release the carbon dioxide in atmosphere and consume oxygen.
Explanation:
Photosynthesis:
It is the process in which in the presence of sun light and chlorophyll by using carbon dioxide and water plants produce the oxygen and glucose.
Carbon dioxide + water + energy → glucose + oxygen
water is supplied through the roots, carbon dioxide collected through stomata and sun light is capture by chloroplast.
Chemical equation:
6H₂O + 6CO₂ + energy → C₆H₁₂O₆ + 6O₂
Cellular respiration:
It is the breakdown of glucose molecule in the presence of oxygen to yield large amount of energy. Water and carbon dioxide are also produced as a byproduct.
Glucose + oxygen → carbon dioxide + water + 38ATP
it is the reverse of photosynthesis.
There are two types of respiration:
1. Aerobic respiration
2. Anaerobic respiration
The Anaerobic respiration occur in the absence of oxygen.
