Explanation:
In the given question, the digestion of monosaccharides has been discussed and the steps of digestion in the digestive system are:
1. The digestion of carbohydrates begins in the mouth where amylase breaks down the starch.
2. The sugars are not completely digested in the mouth therefore they travel from mouth to the stomach.
3. In the stomach, there are no enzymes to digest the sugars.
4. Then, food enters the intestine where intestinal secretions breakdown the sugars.
5. The intestinal juice breaks down the oligosaccharides into diassacharides and these disaccharides are further broken down by maltase, sucrase and lactase.
6. After this, the monosaccharides are formed and these are easily absorbed into the bloodstream.
7. Pancreatic amylase breaks down starch into monosaccharides.
This completes the digestion of the carbohydrates.
Answer:
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Explanation:
ANSWER OF 1ST QUESTION -
1) it protects the nucleic acid from digestion by enzymes, 2) contains special sites on its surface that allow the virion to attach to a host cell, and 3) provides proteins that enable the virion to penetrate the host cell membrane and, in some cases, to inject the infectious nucleic .
ANSWER OF 2ND QUESTION -
Mutations can produce viruses with a reduced pathogenicity, altered host range, or altered target cell specificity but with intact antigenicity. Such viruses can sometimes be used as vaccine strains.
Endoplasmic Reticulum (ER). This folded membrane forms sacs to store proteins or other substances. It creates a vast surface area where the manufacture of proteins and new membranes can take place. <span>Endoplasmic reticulum is a folded mass of membranes made of the same phospholipids found in the plasma membrane. There are two types of ER smooth (without ribosomes) and rough (with ribosomes)<span>
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Answer:
Option C
Explanation:
If we consider Darwin's theory we would realize that the species which are not able to survive are unfit or weak. Thus, predators usually attack species that can be easily targeted. Hence, it this way predation leads to selective pressure on any species and hence leads to creation of a fit gene pool. The weak organisms are removed and more fit organism could mate among themselves to produce healthy offspring.
Hence, option C is correct
<h2>Exhaustion stage of general adaptation.</h2>
Explanation:
The final stage of general adaptation theory is known as exhaustion stage.
The general adaptation is has been divided into three stages- Alarm stage, resistance stage and exhaustion stage.
The theory of adaptation describes the physiological changes that an organism undergoes when it is exposed to stress.
The first stage,which is the alarm stage which is characterized by the burst of energy and the stressor acts as a stimulus.
The second stage is the resistance stage when the organism develops the resistance against stressor.
The last stage is the exhaustion stage when the energy is sufficiently depleted and the final adjustment is attained.
