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GuDViN [60]
3 years ago
13

What does a controlled experiment work with?

Biology
1 answer:
GREYUIT [131]3 years ago
5 0

a variable is the right answer

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What is the ultimate source of energy for most organisms and how is this energy captured so it is useful in a food chain??
Luba_88 [7]
The ultimate source of energy (for most ecosystems) is the sun<span>. The ultimate fate of energy in ecosystems is for it to be lost as heat. Energy and nutrients are passed from organism to organism through the food chain as one organism eats another.</span>
3 0
3 years ago
The length of linker DNA segments varies somewhat among organisms. The length of the linker DNA in sea urchin is 110 base pairs.
nasty-shy [4]

Answer:

362 nucleosomes

Explanation:

A nucleosome repeat is made up of the DNA (146 bp) wrapped around the core nucleosome particle and the linker DNA (110 bp as in this situation). We can conclude that, every repeat stands for 256 (146 + 110) base pairs of DNA.

We are given the length of the entire region to be 92,672 bp long,

To determine the number of nucleosomes to organize the region into the 10nm fiber structure

Let,

Number of nucleosomes =

the length of the entire region

------------------- -----

base pairs of DNA.

= 92,672

-------

256

= 362 nucleosomes

Therefore, 362 nucleosomes is needed to structure the region into the 10nm fiber structure.

5 0
3 years ago
If a person with type B blood marries a person with type A blood, what phenotypes can their children be?
abruzzese [7]
There children will have type AB blood because both A and B are both dominant alleles so they will both be inherited.
8 0
3 years ago
Photopigment genes are located on the X chromosome. Color blindness occurs when an individual has missing or damaged alleles. A
Hunter-Best [27]

The probability that their son exhibits the 'color blind' trait is 0%. It is a type of inheritance linked to the X chromosome.

<h3>Inheritance linked to the X chromosome</h3>

In men, the patterns of inheritance linked to the X chromosome don't follow conventional mendelian inheritance because men have only one X chromosome.

Conversely, women have two X chromosomes, thereby the inheritance pattern resembles Mendelian inheritance.

It is important to highlight that color blindness is a recessive trait on the X chromosome.

In this case, the mother is a carrier, thereby the probability of passing this trait as a carrier to her son is 50%, whereas the father is normal, thereby the probability of passing this trait to his son is 0%.

Learn more about inheritance linked to the X chromosome here:

brainly.com/question/1020249

4 0
2 years ago
In plants and microorganisms, amino acid biosynthesis is a matter of synthesizing the appropriate ____ followed by transaminatio
Stella [2.4K]

Answer:

α-ketoacid; glutamate.

Explanation:

The amino acid synthesis is important for all the living organism. Different organism uses different strategy for the synthesis of amino acid.

The α-ketoacid is generally used in the synthesis of amino acid especially in microorganisms and plants. The transamination of glutamate results results in the formation of particular alpha-keto acid.

Thus, the correct answer is option (b).

8 0
3 years ago
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