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natta225 [31]
2 years ago
6

SOMEONE HELP ME PLEASEEEEEEEEE

Biology
2 answers:
PSYCHO15rus [73]2 years ago
8 0
The answers are A B B
Sophie [7]2 years ago
6 0

Answer:

3. A

4. B

5. B

Explanation:

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1. Why must DNA have thymine instead of Uracil? 2. Why is it necessary for RNA to have uracil instead of thymine?
Zigmanuir [339]
Thymine has a methyl group and is better suited for the storage property of the DNA molecule as it is far more stable compared to Uracil.
RNA contain Uracil instead of thymine so as to make differentiation of RNA molecule from DNA molecules easier.
7 0
3 years ago
Imagine you were going to model the flow of energy in an ecosystem and the flow of elements in the ecosystem using a diagram. Co
klemol [59]
Almost all the energy in ecosystems comes from the sun.<span>Energy is captured by producers and then passed in a linear progression from one trophic level to the next. At each level, much of the energy escapes the ecosystem as heat. Unlike this one-way flow of energy, matter is recycled within and between ecosystems. Elements pass from one organism to another and among parts of the non-living environment through closed loops called biogeochemical cycles.</span>
5 0
3 years ago
Mrs. Jones blood typing results showed agglutination with the plasma containing anti - B antibodies only. What is her blood type
MakcuM [25]

Answer:

Mrs Jones Blood type= B type.

Safe transfusion from: B and O blood type.

Explanation:

In the given example, the anti-B antibodies are present in the donor plasma.  Since anti-B antibodies react with B antigen present on the RBCs of blood, Mrs. Jones should have B antigen on the surface of her RBCs. The blood type with only B-antigen on the RBC's surface is blood type "B".  

Hence, her blood type is "B" type which has B antigens that react with anti B antibodies of the donor plasma causing agglutination and hemolysis of RBCs.  

She can get the blood of B and O blood types. Blood type O is a universal blood type as it does not have B or A antigens on the surface of its RBCs to initiate the agglutination.  

4 0
3 years ago
Which process converts carbon in the form of sugar into carbon dioxide gas?
Studentka2010 [4]

Answer:

respiration

Explanation:

HOPE THAT THIS IS HELPFUL.

HAVE A GREAT DAY.

8 0
2 years ago
Define homologous chromosomes
ra1l [238]

Homologous chromosomes, is a pair of chromosome connected by a centromere. In sexual reproduction, the chromosome of the mother and the chromosome of the father pairs together.

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3 years ago
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