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ELEN [110]
3 years ago
15

What is a food chain and what does it do?

Biology
1 answer:
QveST [7]3 years ago
5 0

A food chain is a hierarchical series of organisms each dependent on the next as a source of food or the series of processes by which food is grown or produced, sold, and eventually consumed.

Here is an example ↓↓↓

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How does a nuclear power plant produce energy
Hunter-Best [27]
By using fossil fuels carhboreted
6 0
3 years ago
Read 2 more answers
Gene S controls the sharpness of spines in a type of cactus. Cactuses with the dominant allele, S, have sharp spines, whereas ho
Leviafan [203]

Answer:

Sharp-spined cactus

Explanation:

Given, that N allele is required for the production of spine and S allele will produce sharp sines.

True breeding sharp spined cactus: NNSS

spineless cactus: nn__ ( we can't fix the allele for second gene since it has not been mentioned as true breeding )

Their progeny: NNSS X nn__ = NnS_

So the progeny is going to be sharp spined because both the dominant alleles N and S are present.

5 0
3 years ago
If a cell is placed in an isotonic medium, there will be no net movement of water. True or false?.
ASHA 777 [7]

It is true.

<h3>What is isotonic medium?</h3>
  • A solution that has the same amount of salt as cells and blood. In hospitalized patients, isotonic solutions are routinely utilized as intravenous fluids.
  • When a cell is immersed in an isotonic solution, there is no net movement of water into or out of the cell, and the volume of the cell remains constant.
  • Isotonic solutions include 0.9% normal saline and lactated ringers. A hypertonic solution is one that has a greater solute concentration than the solution across the semi-permeable barrier.
  • The isotonic solution allows the cells to move water and nutrients in and out of the cells. This is necessary for the blood cells to perform their function of supplying oxygen and other nutrients to other parts of the body.

To learn more about isotonic solutions from the given link

brainly.com/question/19464686

#SPJ4

7 0
1 year ago
What is the general shape of the epithelial cells that are nearest the lumen in an empty urinary bladder?
OverLord2011 [107]

The general shape of the epithelial cells that are nearest to the lumen in an empty urinary bladder is in multiple cell layers which are considered to be a stratified tissue and the cells in it are shaped in terms of the organ’s distention. This type of epithelial cell is the transitional epithelium.

3 0
3 years ago
Why is RNA polymerase a good name for the enzyme that carries out transcription
KATRIN_1 [288]

Answer:

RNA Polymerase plays an important role in the process called transcription which result in the in the synthesis of RNA from DNA molecule.

Explanation:

RNA polymerase helps in the addition of ribonucleotides in the growing RNA strans that is synthesized from template DNA .

      one ribonucleotide is joined to the adjacent ribonucleotide by the formation of phosphodiester bond.

      RNA polymerase is named so because this enzyme helps in the polymerization of ribonucleotides leading to the formation of a Primary RNA transcript.

5 0
3 years ago
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