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shepuryov [24]
3 years ago
14

Question 22

Biology
1 answer:
Anvisha [2.4K]3 years ago
5 0
<h2>Answer:</h2>

The <u>A) name</u> of the element is represented by chemical symbol.

<h2>Explanation:</h2>

In chemistry, all the elements enlisted in the periodic table are represented by chemical symbol. The chemical symbol is derived either from the elements name or from the discoverer name that discovered the element.  

For example, the chemical symbol for element Magnesium is Mg, Gold is Au, Silver is Ag etc. The function of assigning chemical symbol to the elements is that it helps in easy identification of the element.

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Please help i'm stuck on this and it's due soon, questions are in the images, will give brainliest!
UkoKoshka [18]

From the photographs presented, investigation reveals that the gender and age of the victim are:

  • Age: Elderly, at least 40 years old;
  • Gender; Female. This is clear from the hip and the shoe type discovered as the scene.

<h3>What is the preliminary hypothesis on the cause and manner of death?</h3>

The hypothesis or cause of death is a gun shot to the head. This is evidenced by the exhibit 23 - a bullet shell and the hole in the skull of the victim.

The databases that can help with these kind of investigations are:

  • The Crime Database
  • The Police Database.

Learn more about investigations at:
brainly.com/question/2219589
#SPJ1

3 0
1 year ago
An enzyme is a large _____ molecule. carbohydrate nucleic acid polysaccharide protein
trasher [3.6K]

The correct answer is:

polysaccharide protein

Enzymes are proteins that speeds up the rate of chemical reaction in a living organism . An enzyme acts as catalyst for specific chemical reaction, converting a specific sets of reactants called substrates into specific products with out enzymes life would not be exist

Explanation:

Enzymes are identified to catalyze more than 5,000 biochemical reaction types. Most enzymes are proteins, although a few are catalytic RNA molecules. Enzymes' specificity appears in their unusual three-dimensional structures. Like all enzymes, enzymes improve the reaction rate by decreasing its activation potential.

5 0
3 years ago
In a hypothetical population of 2500 people, 2275 people have brown eyes and 225 people have blue eyes (the homozygous-recessive
aev [14]

Answer:

In the next generation of 4000 children, 1680 of them will be heterozygous for the eye colour.

Explanation:

There's a population of 2500, 2275 of with have brown eyes and 225 blue eyes. <u>Let's call the dominant allele associated with brown colour "B" and the recessive allele associated with blue colour "b"</u>. So the possible genotypes are BB, Bb and bb, being BB and Bb brown eyed individuals and bb blue eyed individuals.

If the population it's in Hardy-Weinberg equilibrium, it means genotypic and allelic frequencies don't change from one generation to the following.

From the information given, we can calculate both allelic and genotypic frequencies.

First, we know that the frequency of the genotype bb it's the amount of blue eyed individuals over the total population.

  • f(bb)=225/2500=0.09

Additionally we know the allelic frequencies can be related to the genotypic ones when the population it's in Hardy-Weinberg equilibrium. Particularly we can say:

  • f(bb)=[f(b)]^2 => f(b)=[f(bb)]^(1/2)= 0.3 <em>(square root of f(bb)).</em>

Also, we can calculate the frequency of the B allele, as the probability of all alleles of the gene sum 1. In other words:

f(b)+f(B)=1 => f(B)=1 - f(b) = 1 - 0.3 = 0.7

So far, we have calculated the allelic frequencies, f(b)=0.3 and f(B)=0.7.

Now we can calculate the genotypic frequencies, using the equations of the Hardy-Weinberg equilibrium.

  • f(bb)=[f(b)]^2 => f(bb)=0.3^2=0.09
  • f(Bb)=2*f(B)*f(b) => f(Bb)=2*0.7*03=0.42
  • f(BB)=[f(B)]^2 => f(BB)=0.7^2=0.49

Finally, knowing that there are 4000 children in the next generation, to know how many of them are expected to be heterozygous for the eye colour, we should multiply the number of children for the probability of being heterozygous for the eye colour (which is the genotypic frequency for the genotype Bb).

  • Nº of heterozygous individuals = f(Bb)*total population= 0.42*4000
  • => Nº of heterozygous individuals =1680

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3 0
3 years ago
what is the maximum number of amino acids that can be specified by a codon consisting of a sequence of four bases
vichka [17]

Answer:

64.

Explanation:

It is 64 because there are 20 amino acids with four bases ( A,T,C and G).

and genetic code can be read in triplets and also the four bases can occupy the positions. Eachh amino acid can be coded by the triplet codons. A triplet codon shows three nucleotides of the mRNA template that can code for amino acid

Therefore the number of codons is 4×4×4= 64.

8 0
3 years ago
Name three factors that are important in promoting venous return
Grace [21]

1.The presence of valves 2.the milking action of skeletal muscles 3. the veins as the muscles contract

8 0
3 years ago
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