Urban diseases and causes or mortality are more likely to be those spread by person to person, crowding.
Most
reptiles and all birds are oviparous, meaning that their young develop in
fertilized eggs laid outside the mother's body. In contrast, most mammals are
viviparous, meaning that their young develop inside the mother's body.
<span>
The
main difference between these two groups is that oviparous animals do not
undergo any embryonic development inside the mother whereas viviparous do.</span>
The blisters occur in the second degree burn. The first degree burn only cause the damage to the outer layer of the skin. The blisters are a result of the accumulation of the fluid between the epidermis (outer layer of the skin) and the layers below it. So, for blisters to occur, at least damage to two layers of skin is necessary.
In first degree burn, due to the damage to epidermis only, the redness occur and the blisters does not occur.
Answer:
Explanation:
A protease is an enzyme that catalyzes the hydrolysis of the peptide bonds that tie polypeptide chains together, releasing individual amino acid subunits. The L and D nomenclature for amino acids defines the structure of the glyceraldehyde isomer through which the amino acid can be produced.
SEE BELOW FOR THE APPROPRIATE STRUCTURES.
We need to figure out why swine proteases hydrolyze L-amino acids but not D-amino acids in any way. we know that enzymatic catalysts act as polypeptides if you can recall. They must retain a very precise three-dimensional structure for a catalytic activity to occur. Substrates that do not quite match the required configuration at the active site will not be reacted to — this is a "lock and key" style.
The present exercise may be explained by the fact that the configuration and structure of D-amino acids prevent them from binding properly to the active site of the protease enzyme. Perhaps they're pointed in the wrong direction, or perhaps there happens to be missing electrical interaction that's needed to keep the substrate in position.
Nonetheless, L-amino acids, on the other hand, seem to have the right configurational aspects in the active site and are hydrolyzed.
1.Movement.
All living things move in some way.
2.Respiration is a chemical reaction that happens within cells to release energy from food.
3.Sensitivity.
The ability to detect changes in the surrounding environment.
4. Growth.
5.Reproduction.
Excretion
6. Nutrition.