Answer: B)heavy-chain constant segments
Explanation:
The immunoglobulin are the antibodies that are found in the serum. There are five classes of these antibodies in the serum. These includes the IgG, IgD, IgA, IgM and IgE. They are classified on the basis of difference in the type of heavy chain. IgG, IgA, IgE, IgD contains μ, α, ε-, and δ- heavy chains respectively.
This variation helps each immunoglobulin class to generate a different kind of immune response during different stages of body defense.
Paramecium is protozoan which is like a bedroom slipper in shape and swims rapidly in a corkscrew fashion by means of an army of cilia that operate in wavelike movements. These tiny creatures are abundant in freshwater ponds, especially in areas that are rich in algae.
Paramecium rescued from a fresh pond in Florida is among the most complex single-celled organisms found in fresh water. The fatty acid side chains in the membrane phospholipids of the Florida Paramecia would generally be longer and would be more saturated compared to those in the membranes of the Canada Paramecia.
Moreover, the species Paramecium bursarial shapes advantageous associations with green growth. The green growth lives in its cytoplasm. Algal photosynthesis gives a nourishment source to Paramecium. Paramecia can be utilized as model creatures to examine. You should know that the paramecium swims by rotating along its longer axis and is constantly in search of food, which is swept into the organism by a series of cilia that line the oral groove and gullet.<span>
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Answer:
B. carrying capacity
Explanation:
Definition of carrying capacity; the number or quantity of people or things that can be conveyed or held by a vehicle or container.
Answer:
The given blank can be filled with histones.
Explanation:
The family of basic proteins, which associate with the DNA in the nucleus and assist in condensing it into chromatin are known as histones. The nuclear DNA does not come in the form of free linear strands, it is heavily condensed and enveloped around the histones so that to get fit within the nucleus and take part in the generation of chromosomes.
These are the basic proteins, and because of their positive charge, they get associated with the DNA. Under the microscope, chromatin appears like beads on a string. The beads are known as nucleosomes. Each nucleosome comprises DNA wrapped around the 8 histone proteins, which works like a spool and is known as a histone octamer.
