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Answer:

The four nitrogen bases found in DNA are adenine, cytosine, guanine, and thymine. Each of these bases are often abbreviated a single letter: A (adenine), C (cytosine), G (guanine), T (thymine).

Explanation:

The four nitrogen bases found in DNA are adenine, cytosine, guanine, and thymine. Each of these bases are often abbreviated a single letter: A (adenine), C (cytosine), G (guanine), T (thymine).

According to the base-pairing rule, the one purine binds with a specific pyrimidine always, the purine adenine (A) only pairs with the pyrimidine thymine (T)  and similarly, the purine guanine (G) only pairs with the pyrimidine cytosine (C) in DNA, and in RNA the purine adenine (A) binds with the only uracil.

The bases are Adenine, guanine, guanine, cytosine, thymine,  adenine the string of their base pair would be Thymine, cytosine, cytosine, guanine, adenine, thymine.

DNA stands for Deoxyribonucleic acid. It is made up of two complementary strands. There are four nitrogenous base present in the DNA strand. These are-

Adenine (A), thymine (T), guanine (G), and cytosine (C). These bases pair with bases on the complemenatry strand just according to the  Watson and Crick base pairing ( A=T, G ≡ C ). Uracil is another nitrogenous base. But it is present in RNA in place of Thymine.

Thus, bases found in the DNA are Adenine, thymine, guanine, cytosine.

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Answer:

The answer, I believe, is a.

Explanation:

Observations of fossils came later I believe. :)

Answer: natural selection

Explanation:

Answer: D of the above

Explanation: I am assuming this is for a gizmo because I had this same question. The correct answer for me was D.

New proteins affect the fitness of children as They increase fitness (option b )

Protein are biochemical molecular substances made up of chains of Amino acids and are important part of a healthy diet. They are made up of chemical 'building blocks' called amino acids. Our body uses amino acids to build and repair muscles and bones and to make hormones and enzymes. They can also be used as an energy source

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Answer:

The balanced chemical equation for photosynthesis is as follows: 6 CO2 + 6 H2O → C6H12O6 + 6 O2

Explanation:

Answer:

(A)

Explanation:

can't be flower

can't be color

can't be protective structure

a flower has the ovary which animals have too

Answer:

They have a camera-type eye which consists of an iris, a circular lens, vitreous cavity (eye gel), pigment cells, and photoreceptor cells that translate light from the light-sensitive retina into nerve signals which travel along the optic nerve to the brain.

Explanation:

hope this the answer you are looking for

Answer:

Hydrogen and oxygen

Answer:

D. Hydrogen and oxygen

Explanation:

It is obvious that this is the answer because the ocean is mostly water. H2O, or 2 hydrogen atoms and 1 oxygen atom, makes up water.

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Explanation:

yes

X chromosome from his mother

Answer:

C. She inherits an affected X chromosome from both mother and father.

HIV is a retrovirus whose sequence is RNA DNA → RNA protein which it uses as part of its reproductive cycle. So, the correct option is A.

HIV stands for Human Immunodeficiency Virus which is defined as a virus that attacks the body's immune system. If HIV is not treated, it can lead to AIDS which stands for acquired immunodeficiency syndrome. There is currently no effective cure, while once people have HIV, it remains with it for life.

HIV can spread through sexual contact, illicit injection drug use or sharing needles, contact with infected blood, or from mother to child during pregnancy, childbirth or breastfeeding. HIV is a retrovirus whose sequence is RNA DNA → RNA protein which it uses as part of its reproductive cycle.

So, the correct option is A.

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Answer:

1) CO₂ :-

Breaking down the masses :-

What's the sum :-

Mass of C + 2(Mass of O)

⇒ 12u + 2×16u

Relative Formula Mass :-

12u + 2×16u

⇒ 12u + 32u

⇒ 44u

__________________________________________________________

2) CH₄ :-

Breaking down the masses :-

What's the sum :-

Mass of C + 4(Mass of H)

⇒ 12u + 4×1u

Relative Formula Mass :-

12u + 4×1u

⇒ 12u + 4u

⇒ 16u

__________________________________________________________

3) NH₃ :-

Breaking down the masses :-

What's the sum :-

Mass of N + 3(Mass of H)

⇒ 14u + 3×1u

Relative Formula Mass :-

14u + 3×1u

⇒ 14u + 3u

⇒ 17u

__________________________________________________________

4) SO₂ :-

Breaking down the masses :-

What's the sum :-

Mass of S + 2(Mass of O)

⇒ 32u + 2×16u

Relative Formula Mass :-

32u + 2×16u

⇒ 32u + 32u

⇒ 64u

_________________________________________________________

5) CaCO₃ :-

Breaking down the masses :-

What's the sum :-

Mass of Ca + Mass of C + 3(Mass of O)

⇒ 40u + 12u + 3×16u

Relative Formula Mass :-

40u + 12u + 3×16u

⇒ 40u + 12u + 48u

⇒ 100u

_________________________________________________________

6) H₂O :-

Breaking down the masses :-

What's the sum :-

2(Mass of H) + Mass of O

⇒ 2×1u + 16u

Relative Formula Mass :-

2×1u + 16u

⇒ 2u + 16u

⇒ 18u

_________________________________________________________

7)  NaCl :-

Breaking down the masses :-

What's the sum :-

Mass of Na + Mass of Cl

⇒ 23u + 35.5u

Relative Formula Mass :-

23u + 35.5u

⇒ 58.5u

_________________________________________________________

8) C₂H₆ :-

Breaking down the masses :-

What's the sum :-

2(Mass of C) + 6(Mass of H)

⇒ 2×12u + 6×1u

Relative Formula Mass :-

2×12u + 6×1u

⇒ 24u + 6u

⇒ 30u

_________________________________________________________

9) LiOH :-

Breaking down the masses :-

What's the sum :-

Mass of Li + Mass of O + Mass of H

⇒ 6u + 16u + 1u

Relative Formula Mass :-

6u + 16u + 1u

⇒ 23u

_________________________________________________________

10) H₂SO₄ :-

Breaking down the masses :-

What's the sum :-

2(Mass of H) + Mass of S + 4(Mass of O)

⇒ 2×1u + 32u + 4×16u

Relative Formula Mass :-

2×1u + 32u + 4×16u

⇒ 2u + 32u + 64u

⇒ 98u

Answer:

GENE

Explanation:

The functional segment of the DNA that contain instructions for a specific trait is known as a gene.

Answer:

i think it is false

Explanation:

Answer:

A population pyramid is defined as a graphical representation that shows distribution of both genders male and female in all age groups.

The base of a population pyramid represents the birth rate, so a very broad base represents the higher population of younger age children and higher birth rate.

Hence, the wide base shows higher population of younger age children and higher birth rate.

Answer:

1. DNA strands unwind and separate 2.mRNA leaves the nucleus 3.mRNA copies DNA according to complimentary base paring .4 tRNA anticodons bring amino acids to the corresponding mRNA codons. 5 amino acids bind to each other making a protein 6. a stop codon is reached, the newly formed protein is released to go do its job for the cell

Answer:

As organisms release energy during cellular respiration, carbon dioxide is produced from the carbon in energy storage molecules. ... Carbon dioxide in the biodome decreased because decomposers decreased which means there was a decrease in cellular respiration overall.

There are several possible reasons why the carbon dioxide levels in the air of a biodome might decrease like photosynthesis, respiration, ventilation and carbon sequestration.

There are several possible reasons why the carbon dioxide levels in the air of a biodome might decrease. Some possible causes include:

Photosynthesis: If the biodome contains plants, they may be using carbon dioxide during photosynthesis to produce oxygen and glucose. This process would remove carbon dioxide from the air.

Respiration: If the biodome contains animals or microorganisms that respire, they may be consuming oxygen and producing carbon dioxide. This would result in a decrease in carbon dioxide levels in the air.

Ventilation: If the biodome has a ventilation system, it may be designed to remove excess carbon dioxide from the air. This could result in a decrease in carbon dioxide levels.

Carbon sequestration: If the biodome has systems in place to capture and store carbon dioxide, such as through the use of plants or other methods, this could result in a decrease in carbon dioxide levels in the air.

It's important to note that the specific cause of a decrease in carbon dioxide levels in the biodome's air will depend on the specific conditions and systems in place within the biodome.

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Answer:

D.) Andean

Explanation:

Andean is the kind of mountain formed due to an oceanic plate and continental plate colliding.

Answer:

your answer to this question is Andean letter D

Explanation:

Answer:

Nobody was there to water them so they all died. No I do not think they could be revived or recover.

Explanation:

none needed

Answer:

decreased pollution

Explanation:

The article

Answer: a) The single base change mutation occurs at the beta chain of haemoglobin when glutamic acid is replaced with valine.

b) Sickle Cell Anemia is inherited in an autosomal recessive pattern.

Explanation:

Haemoglobin is a protein found in the red blood cells whose main function is to transport oxygen. Sickle Cell Anemia is a disorder caused by a base change in DNA beta chain of haemoglobin. The amino acid valine is substituted for glutamic acid at one point in each of the two beta chains. When this type of hemoglobin is exposed to low oxygen, it forms elongated crystals inside the red blood cells that are sometimes 15 micrometers in length. These make it almost impossible for the cell to pass through many small capillaries, and the spiked ends of the crystals are likely to rupture the cell membrane, leading to sickle cell anemia.

In describing the inheritance patterns of sickle cell anaemia, it is of autosomal recessive pattern. This means that the parent of the affected individual both carry one copy of the mutated gene, but they typically do not show signs and symptoms of the condition. The gene for normal red blood cell is dominant over the gene for abnormal red blood cell which is said to be recessive. A person who is a stickler should have the genotype SS.

lowerr to flow Beaker

Answer:

Transpiration is the loss of water from a plant in the form of water vapor. Water is absorbed by roots from the soil and transported as a liquid to the leaves via xylem. In the leaves, small pores allow water to escape as a vapor. Of all the water absorbed by plants, less than 5% remains in the plant for growth.

Answer:

1. It creates oxygen for humans and animals to breath.

2. It creates food for humans and animals.

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Answer:

A. Schwann and Schleiden

Hope this helps

Explanation:

option D is the correct answer ..

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Answer:

D, cells.

Explanation:

D. Cells. Hoped this helped