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Lana71 [14]
3 years ago
7

How do you think the first cell came into existence? (using your own words.) (2 sentences)

Biology
2 answers:
lara31 [8.8K]3 years ago
6 0

Answer:

It has been hypothesized that there were four steps that occurred to create the first living cell:

1. The Abiotic (Nonliving) synthesis and accumulation of small organic monomers like amino acids or nucleotides

2. The Joining of monomers into polymers

3. The origin of an effective, low-risk method of replication ( RNA World )

4. The self-assembly of molecules into droplets that had chemical characteristics inside different from the environment outside.

zalisa [80]3 years ago
3 0

I think that the enclosure of self-replicating RNA in a phospholipid membrane. The first cell is thought to have arisen by the enclosure of self-replicating RNA and associated molecules in a membrane composed of phospholipids.

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What are the parts of the aminote egg?<br><br> Select from the drop-down menus to label a, b, and c.
lianna [129]

Answer:

the chorion, the allantoids, the amnion and the yolk sac.

Explanation:

The amniotic egg has four layers. All of these layers are enclosed by a shell

The chorion helps for gas exchange. It's the layer that covers the whole embryo

The allantoid is a sac that helps with gas exchange but also is the one that encloses the wastes of the embryo during the development into the egg, one analogy is with the garbage bag, where all the waste is lookup

The amnion is the layer that protects the embryo, is like a jacket that surrounds the embryo

The yolk sac is the one that has the nutrients that are necessary for the embryo throughout all the development. It is like a lunch box for the embryo

6 0
3 years ago
A neuron has a mutation that results in the loss of dendrites briefly explain what the effect of this would be
AveGali [126]

Answer:

Neuron would be unable to receive signal from environment and previous neuron.

Explanation:

A neuron cell comprises of dendrites, cell body and axon. Dendrites are the projections of neuron cells that receive the electrochemical signal from other neurons and transfer them to soma (body) of a neuron cell. While axon transfer it to next neuron from cell body.

So if the mutation cause loss of dendrites of neuron cells it would be unable to receive the signal from the previous neuron and environment because receptors to receive signals are present on dendrites. Consequently the cell would loss the communication with other cell and that cell may dies and it can also cause paralysis of that particular area because of loss of communication.

8 0
4 years ago
Earths systems interact through...
Drupady [299]

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I think that it is A hope that helps

6 0
3 years ago
What molecule does the mitochondria use to make ATP energy?
scZoUnD [109]

Answer:NADH

Explanation:

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3 years ago
We would expect cells found in the active muscles of animals to contain relatively large amounts of which cellular organelle?
yKpoI14uk [10]

Answer:

Mitochondria

Explanation:

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