Explanation:
The high energy radiation causes damage to the cancer cell’s genetic material by inducing double-stranded breaks in their DNA. This acts as a signal for the cells to begin the process of apoptosis – induced cell death. The cancer cells then are unable to reproduce and die.
However the radiation my reach neighboring healthy cells and also destroy their DNA. If these genes for apoptosis are also damaged in the process then the cells may begin dividing with damaged genetic material resulting in more cancer.
Answer:
The best answer is "E"
NaCl leaves the ascending limb of the loop of Henle through active transport.
Explanation:
The loop of Henle is a U-shaped portion of the tubule that conducts urine within each nephron. It's principal function is the recovery of water and sodium chloride from the urine.
The ascending limb is impermeable to water. NaCl is pumped from the tubule into the interstitium in the ascending limb by active transport. This active transport enables the kidney to establish an osmotic gradient which enables the permeability of water and urea thereby allowing the kidneys to concentrate the urine.
Answer:
N2 + 3H2 ------> 2NH3
2AlBr + 3K2SO4------> 6KBr + Al(SO4)3
The statement that "substance A is rice, and substance B is sugar" is correct.
WHAT IS A MIXTURE?
- A mixture in chemistry is a substance that contains two or more different substances.
- One notable characteristics of a mixture is that it can easily be separated using physical means.
According to this question, a mixture contains two substances A and B. Water is added to this mixture for easy separation.
- Substance A is filtered out. This means that substance A is a solid that is insoluble in water. This substance is RICE.
- The remaining liquid is heated to remove the water content leaving a residue of substance B. This shows that substance B is also a solid but soluble in water. SUGAR best fits this description.
Therefore, in the mixture of two substances A and B, substance A is rice, and substance B is sugar.
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