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Rudiy27
3 years ago
13

Which nitrogenous base is part of an RNA molecule but not a DNA molecule?

Biology
2 answers:
Harrizon [31]3 years ago
5 0
Uracil (U) is not part of DNA but is part of RNA 
pogonyaev3 years ago
5 0

Took the quiz and got, “uracil” hope this helps, this is 100% the correct answer. :)

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Which of the following describes the zone of saturation?
lisabon 2012 [21]

Answer:

when the pores are completely filled in the rocks and soil

Explanation:

The zone of saturation is part of the divisions of ground water systems. It is the zone in which the pore spaces within the rock are completely filled with water.

The zone of saturation is where the aquifer lies in a body of water and it is the ground water prospect. Pore spaces can also be filled with hydrocarbons.

Above the zone of saturation is the water table. The water table defines the upper layer of the zone of saturation above which the pore spaces are filled with gas or no water can be found.

7 0
3 years ago
John and Joshua used a light microscope to observe a plant cell. They indicated the magnification as x1000. Given the eye piece
Zinaida [17]

Answer:

Objective Lens Magnification = ×100

Explanation:

In a microscope, the ocular (eyepiece) lenses are usually to a magnification of ×10, meaning that it magnifies the image 10 times. While the standard objective lenses have magnifications of ×4, ×10, ×40, and ×100.

In order to work out the total magnification, the individual magnifications of the ocular and objective lenses have to be known, after which a simple multiplication of both magnifications will give the total magnification used.

Total Magnification = (eyepiece lens magnification) × (objective lens magnification)

1000 = 10 × obejcetive lens magnification

Dividing both sides by 10

Objective lens magnification = 1000 ÷ 10 = 10

∴ Objective lens magnification = ×100

7 0
3 years ago
Propose a hypothesis of why the flu vaccine must be given every year but for most viral infections one or two doses of the vacci
ahrayia [7]
The flu vaccine changes every year. The flu vaccine is based on a predicted strain that is anticipated to be the most infectious that year. Thats why people who sometimes get the vaccination still get the flu, they don't have the antibodies for the strain they were infected with.  Strains for viral disease don't change very much and usually the vaccination for them cover them well. 
6 0
3 years ago
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suppose you water a potted plant in place at by a window in a transparent airtight jar predict how the rate of photosynthesis mi
Minchanka [31]
Because it has the ability to get light, photosynthesis would happen. Since it is in an airtight jar, it will use all the CO2 in the jar until all the CO2 is gone and there is only Oxygen left. Photosynthesis's rate will decrease rapidly. After that, the plant will have no more energy since there is no CO2 to allow it to keep with photosynthesis, so it would die off. 
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3 years ago
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PLSSSS HELP ASAP
Nastasia [14]

Answer:

Reproductive System

All the body systems have one role or the other to play in digestion and absorption. Even the excretory system removes waste and toxins from the body, leaving the useful materials.

However, the reproductive system is not actively involved in digestion.

8 0
3 years ago
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