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son4ous [18]
3 years ago
12

Why is the food wetted in the mouth?​

Biology
2 answers:
Svetach [21]3 years ago
8 0

Answer:

Saliva also help in moistens the food for easy chewing and swallowing. ... digestion of food starts in mouth. the saliva contains an enzyme called salivary amylase which acts on the carbohydrates to break the food into smaller particles and also to wet the food so that it would easy to chew and engulf.

Hope This helps.

9966 [12]3 years ago
4 0

Because it’s a part of the digested system and the saliva in it help in the process

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Predator and Prey of Asmina Triloba
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If you are referring to a Asimina Triloba, also known as the PawPaw Tree, animals like deer, rabbits, mules, bears, and goats have been known to snack on its fruits. However, the fruits are most often consumed by small mammals such as raccoons, opossums, and foxes. They are usually homes for many species of butterfly larvae, most commonly the Zebra Swallowtail Butterfly.
The PawPaw fruits give off the scent of rotten flesh in order to attract blowflies and carrion beetles for cross pollination.
4 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 years ago
The number of major histocompatibility (MHC) protein combinations possible in a given population is enormous. However, an indivi
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Answer:

The correct answer is "each of the MHC genes has a large number of alleles, but each individual only inherits two for each gene".

Explanation:

In normal conditions, an individual has only two different alleles for a given gene: one inherited from his mother and the other from his father. However, this does not mean that among humans, there are only two different alleles for each gene. The major histocompatibility (MHC) genes are a clear example of this, since there are multiple combinations for each MHC class. For instance, there are 40 very similar alleles only for the HLA-B27 subtype.

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A) bacteria. Membrane-bound organelles are found in eukaryotic cells. However, bacteria are prokaryotic, meaning that they do not have membrane bound organelles.
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