Answer:
There are two differences that distinguish DNA from RNA: (a) RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom), and (b) RNA has the nucleobase uracil while DNA contains thymine.
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Answer: A
Explanation: Because Taq polymerase came from a thermophilic bacterium known as Thermus aquaticus found in Yellowstone National park, during PCR they should be kept at a specific temperature of 72C for maximum DNA strand replication and range of 75C-80C for optimum DNA strand replication. DONT TRUST ME im not sure
When the terminal (third) phosphate is cut loose, ATP becomes ADP (Adenosine diphosphate; di= two), and the stored energy is released for some biological process to utilize.
<u>Helper t-cells</u> identify antigens and then multiply and trigger the production of other kinds of immune cells.
<h3>What are helper T-cells?</h3>
Helper T-cells are one of the main types of immune cells. They detect infections and activate other immune cells to fight the infection.
Your thymus develops helper T-cells. The thymus is a small gland in the front of your chest. The other types of T-cells include:
- Cytotoxic T-cells, which fight infections.
- Regulatory T-cells, which regulate or suppress other immune cells when needed.
- NKT-cells, which can enhance immunity in general.
<h3>What are the subtypes of helper T-cells?</h3>
When helper T-cells detect an infection, they form into one of two subtypes:
- TH1 helper cells release a molecule that activates a type of cell called a macrophage. Macrophages are specialized cells that help eliminate foreign substances from your body. TH1 cells also activate cytotoxic T-cells.
- TH2 helper cells release molecules that activate B-cells. B-cells create antibodies. They also release cells that cause coughing, sneezing or diarrhea to help your body get rid of foreign substances. This group of T-cells helps generate allergy antibodies.
Learn more about helper T-cells
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Mass does<span> not </span>affect<span> the </span>acceleration<span> due to gravity in any measurable way. The two quantities are independent of one another. Light </span>objects<span> accelerate more slowly than heavy </span>objects<span> only when forces other than gravity are also at work. When this happens, an </span>object<span> may be falling, but it is not in free fall.
Mass does matter when pointed in a downward angle, like if you have a metal toy car racing down a large peice of wood at a downward angle. If you had a plasitic car aong side it to measure which would go faster the metal car will reach the bottom quicker, gravity weighs down things :)</span>