<span>a. It is important that the hairs are pulled rather than cut as DNA is found in the hair follicle which is located under the scalp. This is where the hair gets it's blood supply. If there are any drugs in the person's system, traces of it will go into the hair shaft from the blood supply by the hair follicle.
b. It's necessary because hair doesn't grow constant or consistent and 25 to 50 hairs are needed for an accurate test. This decreases false positive results.
c. The hair drug test can go back to about 90 days to see if she has been clean within that time. Beyond that, interviews with family and friends would also be helpful. Phone records would also show if there has been any contact with a dealer.
d.This doesn't prove she's guilty because it just places her at the scene and could be circumstantial.</span>
Answer:
Instantaneous speed is found by taking the absolute value of instantaneous velocity, and it is always positive. Average speed is the total distance traveled divided by elapsed time.
The answer is radial symmetry.
Radially symmetric organisms have no left or right side of the body. Their body can be divided into equal parts about a central point. It is like cutting a pie into equal parts. The body parts are extended outward from its center. This type of symmetry is characteristic for<span> starfish, urchins, sea cucumbers, sea anemone, jellyfish, corals.</span>
Answer:
The correct answer is -
1. Blending - C
2. Straining - D
3. Detergents - B
4. Meat tenderizer (protein enzymes) - E
5. Alcohol - A
Explanation:
To extract protein from various parts of the organisms there is a scientific process that helps in successfully extract it. Organisms such as plants have a rigid cell wall that is required to be broken in order to follow the scientific process of extracting DNA and protein.
Blending use to break the cell wall of the plants such as pea cells. After breaking the cell wall one needs to dissolve the cell membrane made up of lipids with the help of soap or detergents. After the dissolving cell membrane, there is a chance to DNA gets damaged by various chemicals, therefore, alcohol is used to allow DNA to form clumps or precipitate.
Straining is used to separate the cell organelle, dissolved cell membrane from DNA and protein. Papain is a meat tenderizer and a protein enzyme that cuts or breaks the protein.
