<h3>
Digest and recycle the cell's used components by breaking down proteins nucleic acids lipids and carbohydrates
.</h3>
Lysosomes breakdown/digest macromolecules (carbohydrates, lipids, proteins, and nucleic acids), repair cell membranes, and respond against foreign substances such as bacteria, viruses and other antigens. Lysosomes contain enzymes that break down the macromolecules and foreign invaders.
<u>Hope this helps, my dear friend!</u>
- Hanna :)
The correct options are as follows"
1.B.
Postzygotic isolation is a type of reproductive isolation which keeps species from mating with each other as a result of the differences that developed between them when they are separated by physical boundary. In the question given above, the lizard specie has been separated by the formation of a stream which divide the region into two.
2.B.
Allopatric speciation refers to the mode of speciation that occur when biological population of the same specie become isolated from each other to an extent that it interferes with genetic interchange. It usually occur as a result of change in the environment.
Genes are mostly found in the nucleus of the cell, but some (13 in humans) are also located in the cell's mitochondria, in mitochondrial DNA.
Answer:
<h2>
Signalling pathway consists of series of reactions in which different molecules are involved to carry out certain important functions of the cells such as cell repair, cell death etc.</h2>
Explanation:
Chemical inhibitors that interfere with signalling pathways or blocks signals from one cell to another is known as signal pathways inhibitors. If the signalling pathway inhibitors are non polar and large, first of all they will not easily cross the cell membrane. These chemical inhibitors will then bind to receptors and inhibits the signal transduction. No only this, they will interfere with receptor activation also.
<h2>Probiotic bacteria </h2>
Explanation:
- Probiotic bacteria along with bacteria found in human gut, such as Lactobacillus do de novo synthesis and supply vitamins to human body
- In humans, members of the gut microbiota are able to synthesize vitamin K and most of the water‐soluble B vitamins, such as folates, riboflavin and thiamine
- Probiotic bacteria positively impact the immune system and the composition and functioning of the gut microbiota
- Production of vitamins has resulted in many healthy benefits to the host
- Riboflavin is synthesized by many bacteria and its biosynthetic pathway has been studied extensively in<em> Bacillus subtilis</em> and Escherichia coli
- Riboflavin (vitamin B2) plays an essential role in cellular metabolism because it is the precursor of the coenzymes flavin (FMN) and flavin adenine dinucleotide (FAD),both of which act as hydrogen carriers in biological redox reaction