Answer:
A and E
Explanation:
The cell cycle is important because. during the process, <u>cell division in the form of mitosis takes place. The division of cells is important for an organism's growth, development, and repair.</u>
<em>The cycle has different checkpoints in which things are monitored in order to ensure that it is error-free. The checkpoints include G1, G2, and M checkpoints. If things go awry at any part of the cell cycle, the cell either cease dividing and enters a resting (G0) or tries to fix the issue before proceeding.</em>
The correct options are A and E.
Answer:
C
Explanation:
Opportunist are organisms that are found naturally in other living organism and only cause disease in the organism when its immune system is compromised for example HIV virus lowers immune system strength by reducing the amount of the CD4⁺ cells available thereby exposing the organism to attack from opportunistic organism such <em>Staphylococcus aureus. </em>The opinion that supports the statement is S.aureus is found in the nasal passages of many healthy people.
Answer:
A polymer is a substance that has a molecular structure consisting chiefly or entirely of a large number of similar units bonded together
Synthetic Polymers: nylon, polyethylene, polyester, Teflon, and epoxy.
Natural Polymers: silk, wool, DNA, cellulose and proteins
The human retina is composed of 10 layers. Beginning from back to the front of the retina, the layers include; an epithelium of retinal pigments, a layer of cones and rods, an outer regulating membrane, an outer nuclear layer, an outer plexform layer, an inner nuclear layer, an inner plexform layer, a layer of ganglion cells, a. layer of nerve fibre and an inner regulating membrane.
