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Kamila [148]
3 years ago
10

What can be used to distinguish one nucleotide from another

Biology
1 answer:
Readme [11.4K]3 years ago
8 0
A nucleotide is made up of one sugar molecule, one phosphate molecule and one of the four bases. Here is the structural formula for the four nucleotides of DNA. Note that the purine bases (adenine and guanine) have a double ring structure while the pyrimidine bases (thymine and cytosine) have only a single ring
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Match the description to the structure.
Kay [80]

Answer:

tube that carries urine from kidneys to bladder- ureter

functional unit of kidney -nephron

temporary storage place for urine -urinary bladder

exit way of urine from body- urethra

filter of waste material from blood- kidney

Explanation:

hope it will help you

3 0
3 years ago
1. How does our ecological footprint affect each of the spheres on Earth?
Viefleur [7K]
Lithosphere (or geosphere) describes all the rocks, minerals and molten magma found on or in the Earth

The hydrosphere describes all the water on Earth – including liquid water (oceans, etc.) and vapour (precipitation)

The atmosphere describes the layer of gases surrounding the Earth and is divided into sections (stratosphere, etc.)

The biosphere is composed of all the living organisms on the planet (including plants, animals, bacteria, etc.)


The four spheres are interconnected, so human impact on one sphere will potentially effect other spheres

The release of plastic pollution into the oceans (hydrosphere) will impact on marine life (biosphere)

The production and release of CFCs into the atmosphere will effect the impact of UV radiation on the biosphere


The Four Earth Spheres



5 0
3 years ago
Which of the following describes the graph of {x | x _ 4}
s344n2d4d5 [400]

Answer:

Answer: The correct option is, It is a line joining the points whose x and y coordinates add up to 4.Step-by-step explanation:The given equation

Explanation:

Since x=4 is a vertical line, there is no y-intercept and the slope is undefined.

4 0
3 years ago
The use of chemical agents directly on exposed body surfaces to destroy or inhibit vegetative pathogens is ______.
oksian1 [2.3K]
The answer in this question is known as antisepsis. Antisepsis is the chemical agents that is used directly on exposed body surfaces to destroy or inhibit vegetative pathogens. Antisepsis is defined as the practice of using antiseptic to eliminate the micro-organism who causes of having a disease.
4 0
3 years ago
Compare and contrast the mechanisms of getting material across the plasma membranes of cells. Tells me what the mechanisms are i
stepladder [879]

Answer:

Materials get transported from the cell by some mechanisms such as Active Transport, Passive Transport, Diffusion, etc.

Explanation:

Active Transport :

It is a process by which, materials are transported from the extracellular membrane to the intracellular membrane with the help of ATP. It has a few types :  

Primary Active Transport :  

This system is standing upon the sodium-potassium pump. It moves out   Na⁺ from the cell and allows the entry of K⁺ into the cell. In this process ATP is a source of energy. E.g, Sodium-potassium pump.

Secondary Active Transport :

It is mainly standing upon Primary Active Transport. In this process, the main key point is the concentration gradient. There is already a concentration gradient set up by the primary active transport. This system uses that up and moves other substances against their own gradient concentration. E.g, assuming, there is a high concentration of sodium outside the cell,  if a route such as a channel or a carrier protein is open then sodium ions will move into the cell.  In this transport system, some cotransporters are used who move in the sodium ion into the sodium gradient.  

Passive transport :

It is a process by which, substances cross the plasma membrane without acquiring any energy from the cell. Here, no energy is needed because the substances are moving from higher concentration to its lower concentration. E.g, cell membrane or plasma membrane works as a permeable or semipermeable membrane.  

Diffusion :

It is the movement of a substance across a membrane, due to the concentration gradient, without any help from other molecules. E.g, movement of the gaseous molecule from cell to cell.

8 0
3 years ago
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