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Kazeer [188]
3 years ago
14

How many neutrons are present in the nucleus of a phosphorus atom

Biology
2 answers:
VashaNatasha [74]3 years ago
6 0
<span>16 neutrons are present in the most abundant isotope...
Because the P</span><span>hosphorus has 18 </span>isotopes<span>. The most common isotope has </span>mass number<span> (no. of protons 15+ no. of neutrons 16=) 31 .</span>
White raven [17]3 years ago
4 0

16 neutrons are present in the most abundant isotope.

Explanation:

Phosphorus has 18 isotopes. The most common isotope has mass number (no. of protons 15+ no. of neutrons 16=) 31 .

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Under which conditions are the lac structural genes expressed most efficiently?
madam [21]

Lac genes are most effectively expressed in presence of Lactose and its analogs when glucose is absent.

Explanation:

A unit of prokaryotic gene expression and regulation,which includes structural genes and regulatory sequences recognized by regulatory gene product is called operon.

<em>Lac </em>structural genes are a part of<em> Lac</em> operon. The <em>Lac </em>operon consists of three, structural genes,an operator and a promoter.The product of Lac operon is involved in the conversion of disaccharide lactose into glucose and Galactose.

Lactose and its analogs are inducers of<em> Lac </em>operon. So, the structural genes are best expressed in presence of Lactose. Glucose and galactose are repressors of lac gene so the genes are repressed in presence of glucose.

4 0
2 years ago
Who developed classification system for living things?
topjm [15]
Carl Linnaeus, a Swedish botanist
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What kind of molecule is formed when many disaccharide molecules are combined
Vedmedyk [2.9K]

Answer:

Starch Molecule

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2 years ago
Explain some of the processes involved in a scientific investigation.
Dominik [7]

Answer:

The steps involves making hypothesis, deriving predictions from the logical consequences and then carrying out experiments based on those predictions.

Explanation:

Step 1: make a observation .

Step 2: Formulate a statement or question.

Step 3: Form  the hypothesis .

Step 4: make a prediction based on the hypothesis.

Step 5: test the hypothesis whether its true or not.

Step 6: use the results to conclude the experiment.

8 0
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Read 2 more answers
As part of a purification technique, a mixture of small-protein hormones and peptides are placed in a gel and exposed to an elec
lidiya [134]

Answer:

The correct answer is "negative".

Explanation:

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2 years ago
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