Hmm... it is most likely B. But I'm not 100% sure.
As an ammonia molecule, I begin in the blood stream. I pass through the heart and down the aortic trunk to the renal artery and into the kidney. Once there, I begin in the renal cortex where I find a renal corpuscle. I am absorbed by the renal corpuscle by specific gravity and descend around the nephron loop. I ascend the other side and am sent to a collecting duct. This collecting duct takes me to a papillary duct and into one of the minor calyces. This minor calyx feeds me into a major calyx, along the renal pelvis where I combine with other compounds, such as water, ions, acids, drugs, and toxins to form urea. We are sent through the hilum and down into the ureter. The ureter takes us to the bladder where we wait for urination. As we exit the bladder and are combined with creatinine and uric acid, we become collectively known as urine and are sent down the urethra to exit the body.
Out of the following give choices;
a. All DNA strands
contained only the heavy nitrogen isotope.
b. Half of the DNA strands contained only the light nitrogen
isotope.
c. All DNA strands contained both heavy and light nitrogen
isotopes.
d. All DNA strands contained only the lighter nitrogen
isotope.
The answer is b. Meselson–Stahl experiment demonstrated the semi-conservative model of DNA replication.
When DNA is replicated, one strand of the new double
helix strand is the parent's strand while the other is the newly synthesized
one. This made the semiconservative model stand out over the other two, dispersive
and conservative models.
Answer: A.Independent assortment
Explanation:
The other three can be introduced into sexually reproducing organisms.
Answer: The solution was hypertonic
Explanation: The reason for this is the fact that the cell shriveled up. The shriveling was caused by water moving out of the cell. This movement is likely caused by a disbalance in solutes between the cell and the surrounding, with the surrounding containing a higher concentration of solutes. Diffusion tries to balance this by moving water out of the cell, thus increasing the concentration inside and reducing the concentration outside.
