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Kisachek [45]
2 years ago
9

What would you need to do to your model to make it look like a true DNA molecule?

Biology
1 answer:
Marta_Voda [28]2 years ago
6 0

Answer:

To make your double helix, twist your model slightly so the molecule forms a spiral. DNA molecules have a right handed helix shape that winds in one direction. You can figure out the direction by sliding the fingers of your right hand along the backbone. brainliest please?

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Which statement directly describes the cells produced by meiosis
kogti [31]

Answer:

The statement '<em>the genetic material of the original cell is divided among the new cells</em>' describes how cells are produced in meiosis process.

<u>Explanation: </u>

<em>In meiosis a single cell is divided into twice to form four cells and it contains the original half amount of 'genetic information'.</em> In meiosis, the two cells are called daughter cells are produced, and each identical cells to the parent cell meiosis are produced four haploid cells and mitosis are produced two diploid cells.

<em>The meiosis cell division is to reduces the number of 'chromosomes' in the parent cell by its half portion and also they produce four gamete cells.</em> In this process they required to produce 'eggs and sperm' cells for the sexual reproduction .It is the main aim to make a daughter cells with same half so many 'chromosomes' as the starting cell.

4 0
3 years ago
Would an Egyptian pyramid that is 4500 years old be considered a fossil?
lara [203]

An Egyptian pyramid that is 4500 years old will be considered as a fossil in this scenario.

<h3>What is a Fossil?</h3>

This is defined as trace of an animal or plant of a past geologic age that has been preserved in Earth's crust.

Since it has been discovered that the egyptian pyramid contains thousands of marine fossils then it can be generally referred to as a fossil.

Read more about Fossil here brainly.com/question/11829803

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8 0
2 years ago
Match these examples with the correct level of organization. Please hurry!!!
irina [24]

Answer:

Organ systems: human body and circulatory system

organs: heart

tissue: muscle

Explanation:

8 0
3 years ago
Read 2 more answers
Describe the beneficial uses of bacterial toxins in medicine.
worty [1.4K]
The beneficial uses of bacterial toxins in medicine are more and more used lately. For example, Botulinum toxin is a toxic protein produced by the bacterium Clostridium botulinum which has paralytic effects (injection of this toxin into muscle relax specific muscles). Botulinum toxin accomplishes his effects on the neuromuscular junction where he prevents the release of the neurotransmitter acetylcholine (Ach). Utilization of this toxin is in the treatment of various muscle spasms. It is also used in the treatment of migraines. Diphtheria toxin is also one of the toxins used for medical purposes for the treatment of cutaneous and non-Hodgkin T-cell lymphomas. <span>Some bacterial toxins can be used in the treatment of tumours. For example, immunotoxin, which is protein made by fusion of modified antibody and toxin.The antibody binds to an antigen on the target cell, the toxin then enters via endocytosis and kills the cell. Commonly used bacterial toxins in immunotoxins are Diphtheria toxin and the Pseudomonas exotoxin.</span>
3 0
3 years ago
Why can't more than one sperm enter an egg?
Y_Kistochka [10]
<span>Only one sperm normally fuses with an egg because if more than one sperm fuses, through a process called polyspermy, development of the zygote usually stops.


</span>
<span>Fertilization of one egg by two sperm is possible, but the resulting zygote is almost never viable because such a zygote would have three sets of chromosomes instead of the normal two. This condition, called triploidy, is usually incompatible with life. Those rare triploid infants that do survive to term have severe and multiple birth defects and rarely live more than a few days. </span>
3 0
3 years ago
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