All categories

3 years ago

Why is type o rh-negative the universal donor?

1 answer:

6 0

Individuals with the blood group O Rh negative are called “universal donors” because their red blood cells can be transfused to people of all blood groups.

You might be interested in

g A disease that destroys the adrenal cortex should lead to an increase in the plasma levels of: Group of answer choices Adrenoc

docker41 [41]

Answer:

The correct answer is Adrenocorticotropic hormone

Explanation:

Adrenocorticotropic hormone is a hormone from the anterior pituitary whose function is to stimulate the adrenal cortex (fasciculate and reticular areas); In other words, its biological function is to stimulate the secretion of cortisol. The ACTH test is used as an indicator of pituitary function and is useful in the differential diagnosis of: Addison's disease,Congenital adrenal hyperplasia,Cushing's syndrome.ACTH secretion is pulsatile and shows a diurnal variation in plasma concentrations, being maximum at approximately 8:00 am and minimum at midnight. ACTH secretion increases with stress.

7 0

3 years ago

What is a bone joint?

Marrrta [24]

Answer:

A joint or articulation (or articular surface) is the connection made between bones in the body which link the skeletal system into a functional whole. They are constructed to allow for different degrees and types of movement.

Explanation:

8 0

4 years ago

Which of these is a way climate change positively affects organisms?

ArbitrLikvidat [17]

Answer:

Climate change positively affects organisms by providing them new habitat. 

Explanation:

Climate change induces changes in various parameters of an ecosystem like temperature, precipitation, soil properties etc. habitats may undergo changes that make it unsuitable for native organisms to live in.

But this new conditions may be favourable for some other kind of organisms to thrive and flourish.

For example, when temperature of a lake increases due to climate change warm water aquatic organisms find a new habitat in the lake. But this threatens the life of native cold water organisms of the lake. 

Thus climate change doesn’t bring any benefits to living world without harming one or the other group of organisms. 

5 0

3 years ago

Read 2 more answers

List all structures of an animal cell

jok3333 [9.3K]

Answer:

The animal cell includes: a nucleus, cytoplasm, cell membrane, mitochondria and ribosomes

Explanation:

These are all the structures of a basic animal cell, depending on which grade you are they get more complex. If so, then you can just ask me!

Hope this helps! :)

6 0

3 years ago

Describe how you think a child’s DNA is different from his or her mother’s DNA and father’s DNA.

monitta

Answer:

For starters, you inherit two copies of each chromosome—one copy from your mom and one copy from your dad. This means that your genome (all of your DNA) is already different because it contains chromosomes from both of your parents.

So yes, it is definitely possible for two siblings to get pretty different ancestry results from a DNA test. Even when they share the same parents. DNA isn't passed down from generation to generation in a single block. Not every child gets the same 50% of mom's DNA and 50% of dad's DNA.

DNA is passed down to the next generation in big chunks called chromosomes. Every generation, each parent passes half their chromosomes to their child. If nothing happened to the chromosomes between generations, then there would be around a 1 in 8 chance that you would get no DNA from a great, great, great grandparent.

Genetically, you actually carry more of your mother's genes than your father's. That's because of little organelles that live within your cells, the mitochondria, which you only receive from your mother.19DNA is the material that carries all the information about how a living thing will look and function. For instance, DNA in humans determines such things as what color the eyes are and how the lungs work. Each piece of information is carried on a different section of the DNA. These sections are called genes.

Each son receives DNA for his Y chromosome from his father. This DNA is not mixed with that of the mother, and it is identical to that of the father, unless a mutation occurs. It has been estimated that a mutation occurs about once every 500 generations, or every 15,000 years, give or take a few millennia.

DNA Paternity tests can falsely exclude someone who is truly the child's biological father for a variety of reasons. One major reason is simple human error.

While women do inherit 50% of their DNA from each parent, men inherit about 51% from their mother and only 49% from their father.

In 1986 was when DNA was first used in a criminal investigation by Dr. Jeffreys. 1986. The investigation used genetic fingerprinting in a case of two rapes and murders that had happened in 1983 and 1986.

3 0

3 years ago