NEET BIOLOGY

Detailed explanation-1: -Temperature affects all reactions because an increase in temperature causes the molecules involved to gain kinetic energy and therefore react more frequently. However, a very high temperature can denature the enzymes involved in these reactions, reducing or even stopping the reaction completely.

Detailed explanation-2: -It takes more heat energy to warm water than air. In physics parlance, water has a higher specific heat capacity than air. If the layer of air next to the skin is damp, it therefore takes more of the body’s heat energy to warm it. Hence the perceived temperature is cooler.

Detailed explanation-3: -CO2 is the major limiting factor for photosynthesis. The concentration of CO2 in the atmosphere lies between 0.03 %-0.04%. An increase in the concentration of CO2 up to 0.05% in the atmosphere can cause an increase in CO2 fixation rates.

Detailed explanation-4: -A limiting factor is anything that constrains a population’s size and slows or stops it from growing. Some examples of limiting factors are biotic, like food, mates, and competition with other organisms for resources.