Explanation:
Because there's a higher concentration of oxygen molecules outside the cell compared to the cell's cytoplasm, you'll see that oxygen diffuses into the cell along this concentration gradient. ... Because the molecules are moving at random, some will move out of the cell, but most will be moving in in this case.
Answer: Higher : Higher
Explanation: The total flow rate of blood is higher in the arterial system compared to the venous system because the pressure in the arterial system is higher than that of the venous system.
The velocity of flow is higher in arteries compared to veins of comparable size this is because the cross sectional area of the of arteries are smaller than that of the veins so the velocity is therefore higher. The smaller the cross sectional area, the higher the velocity.
Answer:
The hershey chase experiment on bacteriophages showed the genetic information is carried in <u>DNA.</u>
Explanation:
In 1952 Alfred Hershey and Martha Chase provided evidence that DNA is the genetic material. These scientists carried out an experimental work with the T2 virus, a bacteriophage that infects the Escherichia coli bacteria, which reproduces by attaching itself to the outer wall of the bacteria, injecting its DNA into it where it replicates and directs, the synthesis of phage proteins. Phage DNA is encapsulated within proteins and produces phages, which lyse or break the cell and releasing phage from the progeny. They used radioactive forms (isotopes) of phosphorus and sulfur. A radioactive isotope can be used as a marker to identify the location of a specific molecule, because any molecule that contains the isotope is radioactive and therefore easy to detect. The DNA contains phosphorus, but doesn't contain sulfur, therefore phosphorus-32 was used to mark the DNA, instead the protein has sulfur, but not phosphorus, so sulfur-35 was used. Hershey and Chase found that sulfur-35 is outside the cell while phosphorus-32 was inside, indicating that DNA was the physical support of the inheritance. This work allowed the scientists to conclude that it's the DNA and not the protein that enters the bacteria during phage reproduction and that only the DNA is transmitted to the phage of the progeny.
The sequence of amino acids that is produced when the gene is translated forms the primary structure of protein and is wholly dependent on the information that is copied from DNA and onto messenger RNA (mRNA).
In the nucleus of the cell, information for synthesis of a particular protein is copied (transcribed) from DNA and onto mRNA.
mRNA then leaves the nucleus with this information and enters the cytoplasm where it attaches to a ribosome . Transfer RNA (tRNA) read (translates) this information and fetches the corresponding amino acids from the pool of free amino acids in the cytoplasm. It brings them to the ribosome where they are linked together into a chain or polymer, which forms the primary structure of the protein.