Answer: (c) A local wolf population experiences a lethal epidemic of parvovirus.
Explanation:
A limiting factor is one which is capable of limiting the population of the species. It can be a living factor or a non-living factor.
The density dependent limiting factor is a factor which affects the population of a species depending upon the size of the population. There are many density dependent limiting factors such as disease, migration, predation and food.
C is the correct option, this is because of the fact that the epidemic outbreak can spread over to the large number of members of the population. If larger the population size more likely will be the chances of spreading.
The nucleus controls everything in a cell
I remember the secondary structure by visualizing it. Understand that primary structure is just the order of the amino acids. The tertiary structure is the 3dimensional configuration of the whole protein molecule with multiple interactions guiding its fold (disulfide bonds, ionic interactions, hydrogen bonds, van der walls). Secondary structure is a step towards the conformation of the protein where it is made up of either alpha-helices or beta-pleated sheets. The alpha helices look like a spiraling staircase while the beta-pleated sheets look like a repetition of long loops. These two structures hold itself by hydrogen bonds.
1. tiny sacs within the lungs which increase the surface available for gas exchange = alveoli
2. a digestive enzyme that breaks down starches and glycogen into sugars = amylase
3. the two thin-walled chambers that receive blood into the heart from the veins = atria
4. the two tubes into which the trachea divide to go into each lung
= primary bronchi
5. a tiny vessel through which diffusion takes place between the blood and the body tissues
= capillary
6. a mass of nerve tissue not part of the brain = ganglion
