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3 years ago

Define the following

Biology

1 answer:

asambeis [7]3 years ago

6 0

Explanation:

A. Shine-Dalgarno Sequence:

This is a binding site found in the messenger RNA (mRNA) in prokaryotic organisms. It is found upstream of the start codon AUG and aids in the initiation of protein synthesis

B. SRP:

Signal Recognition Protein (SRP). This acts by binding to the bacterial ribosome, which as a result restricts protein synthesis.

C. NLS:

Nuclear Localisation Signal is a short amino acid sequence, which is responsible for transporting proteins from the cell cytoplasm into the nucleus. The NLS is also responsible for the development of the nuclear envelope of the cell.

D. Ubiquitin:

Found predominately in Eukaryota, the ubiquitin is a protein that aids in the control of other proteins within the organism.

E. Specificity Factor:

Also known as the sigma factor, is responsible for the initiation of bacterial transcription. It is recycled during the transcription process and is only required at the initiation of transcription.

F. CRP:

cAMP Receptor Protein (CRP) is involved in catabolite (glucose) repression and serves as an inducer in the process.

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Alenkinab [10]

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3 years ago

Polymers are made up of individual subunits called

ziro4ka [17]

Answer:

oligomers

Explanation:

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3 years ago

How many grams of potassium nitrate (KNO3) would form if 2.25 liters of a 1.50 molar lead nitrate Pb(NO3)2 solution reacts with

nekit [7.7K]

First we must understand the balanced chemical equation:
Pb(NO3)2 + K2CrO4 ==> PbCr04 + 2KNO3

This shows us that two moles of potassium nitrate are formed from 1 mole of lead nitrate or potassium chromate solution. The next step is to find out how many moles of each reactant there are. Note the word Molar is a concentration that simply means moles per liter.

2.25L of 1.5M lead nitrate = 2.25x1.5 = 3.375 moles of lead nitrate
1.15L of 2.75M potassium chromate = 1.15x2.75 = 3.1625 moles

The important part here is to see that the number of moles of the reactants are different. We know the number of moles of products will be dependent on the number of moles of reactants, and in this case there is less potassium chromate than there is lead nitrate, so this is the limiting factor as there is a one to one relationship with both reactants. Therefore, the number of moles of potassium nitrate produced is 2 x number of moles of potassium chromate. i.e. 6.325 moles of potassium nitrate is liberated.

To work out the number of grams, we must find the molar mass (the mass of one mole) of KNO3, which is the sum of the molar mass of each of its component atoms that make up the molecule. I've looked this up as 101.1 grams per mole.

Now we simply times the molar mass by the number of moles to yield the final grams liberated: 6.325 moles x 101.1 grams/mole = 639.4 grams of potassium nitrate is liberated from this reaction.

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4 years ago

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What happens to a virus involved in the lysogenic cycle?

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The lytic cycle involves the reproduction of viruses using a host cell to manufacture more viruses; the viruses then burst out of the cell. The lysogenic cycle involves the incorporation of the viral genome into the host cell genome, infecting it from within.

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3 years ago

The most ethical decisions for usage of genomic data and technology, like sequencing human genomes for customized treatments and

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The most ethical decisions for usage of genomic data and technology, like sequencing human genomes for customized treatments and constructing deadly pathogens for study, are based on Consensus.

<h3>Waht is Consensus in a scientific community?</h3>

It normally implies settlement of the supermajority, aleven though now no longer always . Consensus is executed via scholarly communique at conferences, the book process, replication of reproducible consequences through others, scholarly debate, and peer review.

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