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2 years ago

What is an exception to the central dogma of molecular biology?

2 answers:

8 0

"Viruses sometimes transfer information from RNA to DNA" is an exception to the <span>central dogma of molecular biology. The correct option among all the options that are given in the question is the first option or option "A". I hope that the answer has actually come to your great help.</span>

Novosadov [1.4K]2 years ago

6 0

Answer:

A. Viruses sometimes transfer information from RNA to DNA.

Explanation:

An RNA virus is a virus that uses ribonucleic acid (RNA) as a genetic material, or that in its replication process needs RNA. For example, the Hepatitis B virus is a virus classified as a DNA virus (hepadnavirus), with the peculiarity of having its double-stranded DNA genome and the genome is transcribed into RNA during replication.Its nucleic acid is usually single stranded RNA but it can also be double stranded RNA. Single-stranded RNA viruses can, in turn, be classified according to the sense or polarity of their RNA as negative or positive. The positive RNA viruses are identical to the viral mRNA and therefore can be immediately translated by the host cell. The negative viral RNA is complementary to the mRNA and therefore must become RNA positive by an RNA polymerase before translation

You might be interested in

Convert enzyme concentrations of 2.5%, 5.0%, and 10% to ppt units.

slavikrds [6]

Answer:

2.5 x 10¹⁰ ppt

5.0 x 10¹⁰ ppt

1.0 x 10¹¹ ppt

Explanation:

The notation ppt refers to parts per trillion units, that is, how many parts of enzyme are there in 1 trillion parts. Percentage refers to the number of parts per 100 units. Converting the given values from percentage to ppt:

$\frac{2.5}{100}=\frac{a}{1,000,000,000,000}\\a=2.5 *10^{10}\ ppt\\\\\frac{5.0}{100}=\frac{b}{1,000,000,000,000}\\b=5.0 *10^{10}\ ppt\\\\\frac{10}{100}=\frac{c}{1,000,000,000,000}\\c=1*10^{11}\ ppt$

The concentration in ppt are:

2.5 x 10¹⁰ ppt

5.0 x 10¹⁰ ppt

1.0 x 10¹¹ ppt

7 0

2 years ago

Compare and contrast two types of plants described in this passage

Bad White [126]

Plants have 98% of the elements found in humans. But for some characteristics they are classified in the biological kingdom Plantae. They multicellular being with limited motility and most importantly, they are able to manufacture their own food. They are essential for the existence of life in this planet and this is why Dr. Maria can see a soul in them. This is a beautiful way to look at these living being, to give them a living soul.

8 0

2 years ago

Read 2 more answers

1. Which force is being applied by a vendor when he is pushing the pushcart? *

marta [7]

Answer:

1. Muscular force

2. Speed decreases

3. higher than

4. decreases

5. air pressure

6. Inversely proportional to the area of contact

7. 20 N

8. 400 N / m2

9. 150 N

10. friction

Explanation:

1. During pushing the pushcart the person is required to use strength of his arms and legs muscles that will creat a force between the surfaces, hence the force used is muscular force.

2. The speed of car decreases while applying brakes because a friction is generated between the brakes and the wheel that reduces the kinetic energy of vehicle and decreases the speed of the vehicle.

3. The pressure of the water at the bottom of the pond is higher than at the surface of pond because water pressure increases with the depth of the water. Water pressure increases in the depth because weight of water over the body icreases as going deep.

4. At higher altitude the atomspheric pressure decreases because as the height in atmosphere increases the amount of air molecules decreases and so, less oxygen for breathing.

5. Air pressure allows the dropper to fill inks as dropper exerts a force on a surface of ink and due to the low pressure inside the dropper sucks up the liquid.

6. Pressure is defined as the perpendicular force exerted at the surface or it means force per unit area. Pressure is directly proportional to the force and inversely proportional to area of contact.

7. The boys exerts pressure in opposite direction on an object, hence the resultant force will be

resultant force = force 1 - force 2 = 60N−40N=20N.

8. pressure (P) is equal to force (F) per unit area (A)

P = F / A

= 800 / 2

= 400 N / m2

9. Pressure (P) = 300 Pa

Area of Cross-section (A) = 0.5 m²

Force = P × A

= 300 × 0.5

= 150 N

10. Friction is the force that is always applied against or opposite to the moving direction of an object. Friction is responsible to stop the movement of any moving object such as vehicles and sliding objects.

Hence, the correct option of the questions are:

1. Muscular force

2. Speed decreases

3. higher than

4. decreases

5. air pressure

6. Inversely proportional to the area of contact

7. 20 N

8. 400 N / m2

9. 150 N

10. friction

7 0

2 years ago

Organisms that live in freshwater and marine biomes have developed unique adaptations that aid in their survival. Which of the f

vaieri [72.5K]

Answer:

Probably <u>D</u> tolerance to high levels of salinity Please select the best answer from the choices provided

Explanation:

4 0

2 years ago

Which of the following statements gives the most fundamental reason why ornithine is unlikely to be found in proteins synthesize

BlackZzzverrR [31]

Answer:

option A

Explanation:

ornithine is a non-protein and non-essential amino acid it is formed in plant by L-glutamate and in animals it is formed during the urea cycle by the catalyzation of arginine which is an enzyme. In vivo ornithine is not found in protein synthesis because it do not have any codon so it can not endoded by DNA but can be synthesized.

Ornithine is a precursor of glutamic acid, proline amino acid and citrulline amino acid

6 0

2 years ago