What’s the reason scientists still refer to viruses as non- living ?

1 answer:

6 0

Viruses are not considered "alive" because they lack many of the properties that scientists associate with living organisms. Primarily, they lack the ability to reproduce without the aid of a host cell, and don't use the typical cell- division approach to replication.

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While doing research on deep-sea vents, you discover a very simple new life form. After some initial analysis, you find that thi

bagirrra123 [75]

Answer:

The one treated with DNase and protease

Explanation:

The samples that will transform yellow into purple if RNA is the genetic material are the ones treated with DNase and protease respectively.

The treatment of the heat-killed sample of the purple life with DNase will ensure that the DNA in the sample becomes degraded while treatment with protease will ensure that protein is degraded, leaving only the RNA. Thus, the RNA can be taken up by the yellow life form and become transformed into purple if indeed RNA is the genetic material.

The sample treated with RNase cannot transform the yellow life into purple because the RNase catalyzes the degradation of RNA into smaller components.

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Can a virus metabolism

Alina [70]

Defects in transcription factors underlie some forms of cancer.

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3 years ago

A model of cell division is shown here. A student evaluates the model and makes the claim that the cell division increases genet

loris [4]

Chromosomes exchange genetic material in step 3.

<h3>Explanation:</h3>

The meiosis is the type of cell division that takes place for gametogenesis. The meiosis has two phases - meiosis I and meiosis II.

The meiosis I has the events like crossing over and independent assortment which leads to the mixing of genes between homologous chromosome pairs and separation of homologous chromosome pairs. So the two cells that are produced from the meiosis I are genetically different. The step 3 shows the crossing over of prophase 1 of meiosis I. So, it shows the genetic difference between the offsprings and leads to genetic variation.

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3 years ago

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Match the time period with the correct layer of fossils (mya = millions of years ago). ITEM BANK: Move to Bottom 175 mya250 mya4

Marrrta [24]

Answer:

0 mya, 175mya, 250mya, 400mya

Explanation:

The substance which highest million year ago should be more in-depth in the soil hence 400mpa should occupy the highest depth below the ground.

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3 years ago

Which property (a) determines the suitability of aluminium for making aircraft body?

klio [65]

Answer:

Corrosion Resistance

Explanation:

aluminum's high resistance to corrosion ensures the safety of the aircraft and its passengers.

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3 years ago