Meiosis.
Meiosis results in four cells of the original, each with a halved amount of chromosomes, you could say.
Answer:
The conditions for natural selection are:
- overproduction of offspring
- variation among organisms in a population
- favorable adaptations selected by nature
Explanation:
- Natural selection is the continuous process of reproduction and survival that is caused by the contrast and differences due to phenotype.
- Overproduction of species creates the competition and only the one survived through the natural selection grows to the next generation.
- Similarly variations in the phenotypic organization of species, their adaptation process etc causes the natural selection.
- Natural selection is the gateway for the evolution.
Answer:
<u>oxygen</u>
Explanation:
Catalase is an enzyme found in living tissuea of plants and animals. Its role in living tissues is to break down hydrogen peroxide produced during cellular metabolism. Hydrogen peroxide is ahighly toxic substance which should not be allowed to accumulate in the tissues. If it were to accumulate in the tissues, it would interfere with cellular metabolism. Enzyme catalase breaks down hydrogen peroxide into water and oxygen which are non-toxic substances. Liver contains enzyme catalase.
Answer:
The answer is c
Explanation:
the the immune system protects the body against harmful pathogens by producing special proteins called antibodies.
Answer:
Explanation:
The arrangement below is from the smallest to the biggest
nucleotide → nucleus DNA → gene → chromosome → cell
The nucleotide is the smallest because it is what makes up the DNA, it is made up of a nitrogenous base, ribose sugar and a phosphate group.
Nucleus DNA follows because it is bigger than a nucleotide (as said earlier) but is singly found in the chromosome which is present in the nucleus.
The gene, which can be assumed to be the entire genome of the organism, involves both the chromosomal gene and the extrachromosomal gene (like the mitochondrial DNA).
Chromosome is made up of a DNA molecule and protein which makes it bigger than the Nucleus DNA and the gene because it contains several genes.
The Cell contains all the molecules/organelles mentioned above and as such is the largest among them all.
Note that the spellings the question are wrong and have been corrected in the answers provided
