Answer:
<h2>Apoenzyme
</h2><h2>Cofactors</h2>
Explanation:
Conjugated enzymes also known as holoenzyme. Simple enzymes consist of only protein alone but the Conjugated enzymes contain protein ( this portion is called Apoenzyme) and nonprotein molecules (this portion is called cofactor). Cofactor help enzymes in their action.
Enzymes are catalyst which increase the rate of a reaction by decreasing the activation energy.
Answer:
Explanation:
Meiosis is a form of cell division that occurs in the sex cells of organisms. It ensures the reduction of a diploid cell to an haploid cell to allow for the formation of a diploid zygote after fertilization (contribution of both parents haploid sex cells to give a diploid zygote). Thus, this process is very essential and important.
The reduction is accomplished by 2 divisions after the duplication of chromosomes
- first division: separation of homologous pairs of chromosomes (this reduces the total in half)
- second division: separation of sister chromatids of a chromosome.
The rearrangement in meiosis occurs by crossing over/genetic recombination.
This is the exchange of genetic material between homologous pairs of chromosome bringing about a rearrangement and genetic variation
An example of a chromosomal abnormality that arises as a result of defects in this process is the Down Syndrome which is caused by a nondisjunction of the chromosomes 21 pair in a sex cell.
This condition produces offsprings that have some characteristic facial features, short stature etc
The answer is A. skeletal system
