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Scilla [17]
3 years ago
7

In a food chain, which tropical level contains the greatest amount of energy

Biology
1 answer:
Maru [420]3 years ago
5 0
I believe it's producers, correct me if I'm wrong.
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A person's blood type is determined by the:_______
matrenka [14]

Answer:

) Presence of specific glycoproteins on the cell membrane

Explanation:

When specif glycoproteins(antigens)  or antibody are present on a cell membrane of Red blood cell,they can  be used to identify the blood type.Antigens are substances capable of triggering an immune response in a cells.

In addition,they function in transport of molecules across the RBC. They help in the maintenance of the RBC,and aiding the arrest of cells capable of causing diseases to the body.

Therefore,they are good determinants of blood types,based on this two types of antigens present in a  blood type.

These two antigens  used for classification of blood types are the 1-the ABO antigens 2,the Rhesus antigens.

Essentially,when a WBC produces an antibody ,which is a molecule that defends the body,If this is not compatible,the antibody will recognize it as a foreign body and attack it.Thus such blood types are not compatible. Thus the antibody-antigen reaction are good for knowing and classify blood types.

Antigen can also be glycoprotein,carbohydrate or glycolipids.

Generally blood types are inherited from both parents.Therefore the antigen present on the RBC are combination of the alleles from each parent.

4 0
2 years ago
In cats, some are black, some are orange, and some are calico (fur that is both black and orange) All calico cats are always fem
lapo4ka [179]

Calico cats are predominantly female because they’re colouring is related to the X chromosome.

  1. Two X chromosomes are needed for a cat to have that distinctive tri-colour coat.
  2. If a cat has an XX pair, she will be female.
  3. Male cats have an XY chromosome pair, so they can’t be Calicos.

Have a great day <3  (I love cats)

3 0
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Explain the cell theory and distinguish between the three basic types of cells.
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All organisms are composed of one or more cells
 
Cells are the basic unit of structure and function in a living organism

Cells come only from the reproduction of existing cells
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3 years ago
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