Answer:
a.i and iii are correct
Explanation:
Biology is the study of the living organism and how they interact with the other components of the environment and among eachother, this is very important because then you can make the inference that biology studies energy as long as it is carried out by organisms and in the cain et al the definition of environment is the abiotic, or non living organisms with which the living organisms interact.
I think the answer is D :) ........
Enteropeptidase (enterokinase) and trypsin are directly activated by trypsinogen.
<h3>
What is Trypsin?</h3>
- By slicing these lengthy chains of amino acids into smaller pieces, the enzyme trypsin in the first part of the small intestine initiates the breakdown of protein molecules. It is a serine protease from the PA clan superfamily that hydrolyzes proteins in the digestive tracts of numerous animals.
- When the pancreatic enzyme trypsinogen, in the proenzyme form, is activated, trypsin is generated in the small intestine. The carboxyl side of the amino acids lysine or arginine is where trypsin primarily breaks peptide chains.
- It is employed in a variety of biotechnological procedures. Trypsin proteolysis or trypsinization is the term used to describe the process, and trypsinized proteins are those that have undergone trypsin digestion or treatment.
To know more about trypsin with the given link brainly.com/question/14301571
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Hibernation helps animals survive the changing seasons. Foods that bears eat, such as berries and flowers, are much less available during cold winter months. When they hibernate, bears enter a deep sleep. ... While they sleep, the bears can survive because their bodies live off of their stored fat or food.
During hibernation, the animal’s body temperature, heart rate and breathing rate all drop to significantly lower levels. Animals do this to survive the winter because the weather is cold and food is scarce. It is advantageous because these animals can quite literally shut themselves off for weeks at a time rather than try and survive through harsh weather conditions.
While many people think bears are hibernators, they actually participate in a similar, though not exact, practice. Instead of hibernating, bears fall into a deep sleep called torpor. During torpor, heart rate and breathing rate decreases, body temperature reduces slightly and bears do not eat or release bodily waste. Bears can sleep more than 100 days without eating, drinking, or passing waste!
Bears sleep in dens that they make themselves, as well as in hollow trees, caves and dens built by other bears. A den can be built in 3–7 days, however, the timing of den building varies from bear to bear. While some bears build their dens months before hibernation season, others choose to excavate their dens.
These animals can dramatically drop their body temperature to below freezing—salty body fluids work to prevent tissue crystallization in particularly cold temperatures.
So really, animals that are true hibernators don’t actually sleep through the entire winter.
The urea produced by their fat metabolism is broken down and the nitrogen is re-used by the bear to rebuild protein.
Wind, Solar and Water are renewable energy sources
