Answer:
Option C, zygote
Explanation:
The complete question is
The cell produced by the fusion of an egg and a sperm is the
a. gamete
b. oocyte
c. zygote
d. germ line cells
e. somatic cell
Solution
During the process of fertilization in sexual reproduction, when a male gamete (sperm) and female gamete (egg) fuses they form a new cell known as zygote.
Both male and female gamete are haploid with”n” number of chromosomes (only a single set of genes) and when they combine they form diploid zygote with “2n” number of chromosomes.
Hence, option C is correct
Answer:
chromosome number is the precise number of chromosomes for a certain species.
Explanation:
in humans there are 46 pairs of chromosomes .
23 from father and 23 from mother.
Answer:
E could be an answer, if not then its D
<span><span><span>Release enzymes outside of the cell (exocytosis)</span>
which may serve the purpose of destroying materials around the cell.</span><span><span>Break-down 'digestion' of materials from inside the cell (autophagy)</span>
i.e. by fusing with vacuoles from inside the cell.
This could include digesting worn-out organelles so that useful chemicals locked-up in their structures can be re-used by the cell.</span><span><span>Break-down 'digestion' of materials from outside the cell (heterophagy)</span>
i.e. by fusing with vacuoles from outside the cell.
This could include breaking-down material taken-in by phagocytes, which include many types of white blood cells - also known as leucocytes. Specific mechanisms of heterophagy can be:<span><span>phagocytic - by which cells engulf extracellular debris, bacteria or other particles - only occurs in certain specialized cells</span><span>pinocytic - by which cells engulf extracellular fluid</span><span>endocytic - by which cells take-up particles such as molecules that have become attached to the outer-surface of the cell membrane.</span></span></span><span><span>Recycle the products of biochemical reactions that have taken place following materials being brought into the cell by endocytosis (general term for this 'recycling' function: biosynthesis) </span>
Different materials (chemicals) are processed in different ways, e.g. some structures may be processed/degraded within lysosomes and others are taken to the surface of the cell.</span><span>Completely break-down cells that have died (autolysis)</span></span>
In general, the functions of lysosomes involve breaking-down i.e. processing to 'make safe' or make use of, or removing from the cell e.g. by exocytosis, useless and potentially harmful materials such as old worn-out parts of the cell or potential threats such bacteria. Lysosomes can therefore be thought of as the rubbish disposal units within cel
