Answer:
Mutations in regulatory proteins during the cell cycle may cause affected cells to divide uncontrollably
Explanation:
Answer:
B
Explanation:
Light shows duality i.e it shows properties of both particle as well as wave.
Answer:
B
Explanation:
The fatty acid tails of phospholipids are hydrophobic – meaning they are ‘water-hating’. This is why they are in the middle of the bi-lipid layer of the cell membrane 'hiding' from the 'watery' environment of a cell. This poses a challenge in the diffusion of large and charged molecules across the membrane -such as sodium ions. Such molecules need transmembrane protein channels to help them cross the membrane. These are called integral proteins because they are part and parcel of the cell membrane. The cell membrane, in addition, also has glycolipids and glycoproteins on its surface that are significant in the identification of the cell by other cells.
Answer:
When air pollution began, it caused acid rain, damaging and destroying forests. It caused animals to become ill and potentially die as the acid rain ruined their environment. The air pollution also made around 400,000 people die faster than they would without air pollution.
Explanation:
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