All categories

3 years ago

Samples as small as a few skin cells can potentially contain DNA. T/F

Biology

1 answer:

Travka [436]3 years ago

8 0

Answer: True

Explanation:

DNA (Deoxyribonucleic acid) is the genetic material present inside the nucleus of all eukaryotic cells.
Samples as small as few skin cells also contain DNA and the presence of DNA in skin cells is often used to identify the DNA of a person in a crime scene.
Further, with the use of PCR technology, the small amount of DNA obtained from skin cells can be amplified into many copies.
Therefore, the given statement is true.

You might be interested in

Vika [28.1K]

Answer:

The correct option is C: "Oxygen levels would be higher, but carbon dioxide levels would be the same".

Explanation:

The sealed aquarium is paced near a window which means they have access to sunlight, and hence, can photosynthesize. As the plants use up carbon dioxide during the day and give out oxygen during this process, they also respire during the night, a product of which is carbon dioxide. This is why the levels of carbon dioxide will remain the same and level of oxygen will rise because they are photosynthesizing for a longer period during the day than they are respiring during the night.

Hope that answers the question, have a great day!

5 0

3 years ago

Read 2 more answers

How does coral reef damage negatively affect the land? a.) There is more biodiversity. b.) There is a loss of cures. c.) There i

Gemiola [76]

C. There is more land erosion

6 0

3 years ago

Read 2 more answers

Click and drag each label to the appropriate dock to accurately identify the parts of the plasma membrane.

kirill [66]

The parts of the plasma membrane is mentioned in the diagram below:

7 0

3 years ago

Diagnose: Mrs. Harris is a 60 year old white woman. She has noticed in recent years that her height has slightly decreased. Rece

Brut [27]

Answer:

Q: Which skeletal system disorder might she be suffering from?

A: Osteoporosis

Q: What techniques could be used to diagnose her condition?

A: Bone mineral density (BMD) test or dual energy X-ray absorptiometry (DXA) scan

Q: What treatments are available?

A: Medication, healthy food.

Explanation:

The vertebral discs between vertebrae could shrink with age. Therefore, a height loss up to 1-inch is normal. However, if the height loss is more then it is possibly due to osteoporosis.

A bone mineral density test, also known as dual energy X-ray absorptiometry scan, is a well-adapted test to measure the amount of calcium and other minerals in the bones. It uses X-rays to measure the content of calcium and thus strength of bones.

A person who is already suffering from osteoporosis should be treated with medicine right away so that it stops further deterioration of the bones and avoid any future bone fractures. Further, it can be handled by eating a healthy diet and supplements such as vitamins D. In case some of the bones/vertebrae are already fractured, surgical approaches might be necessary.

8 0

3 years ago

Which of these is a product of anaerobic rrespiration

Arlecino [84]

The products of anaerobic respiration are lactic acid, carbon dioxide, and water.

6 0

3 years ago