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Biology

1 answer:

Alex787 [66]2 years ago

4 0

C. DNA Polymerase matches adenine to thymine and cytosine to guanine. Two identical double helixes are produced.

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Three cells undergo meiosis. How many haploid cells are produced

tresset_1 [31]

When meiotic cell division occurs, a diploid parent cell experiences cell division to produce four haploid cells. Thus, if three parent cells undertake meiosis, twelve haploid cells will be created.

7 0

2 years ago

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Each of the mutants listed below this paragraph has a different mutant form of the gene encoding protein X. Each mutant gene con

Aleks [24]

It should be taken into consideration the presence of frameshift mutations. Frameshift mutation, due to addition or deletion of a base, results in the change of reading frame and consequently in changed protein. But it is known that 3 nucleotides on mRNA code for the specific amino acid. If the number of inserted or deleted nucleotides is 3, it will result in the absence of only 1 amino acid which is not expected to drastically change protein sequence.
Knowing all this, it can be concluded the following:

-/-/+/-/- OK - Due to 4 deletions and 1 insertion, effectively only 3 nucleotides are missing.
+/-/+ Not OK - Due to 1 deletion and 2 insertions, effectively only 1 nucleotide is added leading to the frameshift mutation.
+/-/+/- OK - Due to 2 deletions and 2 insertions, a number of nucleotides remain the same.
+/+/-/+ Not OK - Due to 1 deletion and 3 insertions, effectively only 2 nucleotides are added and the frameshift mutation occurs.
-/+ OK - Due 1 deletion and 1 insertion, a number of nucleotides remain the same.
- Not OK - Due to 1 deletion, the frameshift mutation occurs.
-/-/-/-/-/- OK - Due to 6 deletions, it will be deleted 2 amino acids and the protein will be nearly normal.
+/+/+ OK - Due to 3 insertions, 1 amino acid will be added in excess.
-/- Not OK - Due to 2 deletions, the frameshift mutation occurs.

8 0

3 years ago

Pizza restaurants often use large ovens lined with bricks. These ovens remain very hot, even though only a small fire is kept bu

tekilochka [14]

Density...
Fire bricks absorb many btu’s, so once heated up only a small flame is required to maintain that heat/temperature.

The fire brick composition is mostly materials like alumina silica sand, clay, not very porous.

5 0

2 years ago

What is the ability of a substance to burn?

Nutka1998 [239]

The ability of a substance to burn is flammability.

6 0

3 years ago

What is the concentration of KCl if 10 g are dissolved in enough water to make 12 L?

Y_Kistochka [10]

Answer:

Concentration = 0.011 M

Explanation:

Molarity is given by dividing number of moles by volume in Liters

Molarity = moles/volume

But;

Number of moles = mass/molar mass

= 10 g/ 74.55 g/mole

= 0.134 moles

Therefore;

Molarity = 0.134 moles/12 L

= 0.011 M

8 0

2 years ago