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tresset_1 [31]
3 years ago
5

An organism must have a ________ in order to be considered living.

Biology
1 answer:
pickupchik [31]3 years ago
8 0
Cells to be considered living and response to stimulus
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Please help and be quick 5 ⭐️
amm1812

Answer:

Orbital

Explanation:

I believe, to the best of my knowledge, that the answer that you're looking for here is the Orbital. Hopefully this helps.

7 0
3 years ago
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What happens to RNA polymerase II after it has completed transcription of a gene? a. It begins transcribing the next gene on the
Over [174]

The correct answer is: b. It is free to bind to another promoter and begin transcription

Transcription is the first step of gene expression in which DNA molecule is copied (transcribed) into RNA (mRNA) by RNA polymerase. The process of transcription is divided into three phases:

1. Initiation

• RNA polymerase with transcriptional factors bind to gene promoter  

• RNA polymerase unwinds DNA double helix (transcription bubble is formed)

2. Elongation

• RNA polymerases adds nucleotides complementary to DNA  

3. Termination

• RNA polymerase gets to stop codon (transcribes a sequence of DNA known as a terminator)

• Formed complementary RNA strand is released from DNA-RNA complex.

RNA polymerase is also released and can transcribe some other gene by binding to its promotor. RNA polymerase will transcribe just the genes whose products are needed at a particular moment.

7 0
2 years ago
Potassium has a half-life of 12 hours. What fraction of a 100g sample is left after 48 hours
EastWind [94]

Answer:

After 48 hours amount left = 6.25 g

Explanation:

Given data:

Half life of potassium = 12 hours

Total mass = 100 g

Mass left after 48 hours = ?

Solution:

Number of half lives passed:

Number of half lives = Time elapsed / half life

Number of half lives = 48 hours/ 12 hours

Number of half lives = 4

At time zero = 100 g

At first half life = 100 g/ 2 = 50 g

At 2nd half life = 50 g/2 = 25 g

At 3rd half life = 25 g/2 = 12.5g

At 4th half life = 12.5 g/2 = 6.25 g

4 0
2 years ago
Explain weather car battery acid is a pure substance or a mixture
Rudik [331]

Answer:

It is a mixture.

Explanation:

Car battery is mixture because it contain sulfuric acid and water. A mixture is a substance that contain two or more substances which are mixed physically or physically combined and are not chemically combined but can also be separated into the different substance.

8 0
2 years ago
Some teachers explain thAT meiosis is actually appening twice.is tat the correct assumption
sergij07 [2.7K]
Yes. It can happen twice! 
8 0
3 years ago
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