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Tcecarenko [31]
3 years ago
11

Which of the following is produced by the immune system to identify foreign cells?

Biology
1 answer:
Alexandra [31]3 years ago
3 0

Antibodies identify and attach themselves to foreign cells. Hope this helped!

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In a small, isolated population of piranhas, one individual is born with a synonymous mutation in a gene that codes for the beta
IrinaVladis [17]

Answer:

The correct answer is: Genetic Drift.

Explanation:

  • In any population of any species having two or more alleles encoding for different genes, the frequency of occurrence of each allele among the individuals of a population can vary.
  • The frequency of one allele may be far more or far less than the frequency of other alleles.
  • The frequency of any particular allele is dependent on factors like random mating among individuals as well as natural selection, that tends to increase the frequency of those alleles which provide a survival advantage to the individual in a given environment.
  • Genetic drift can be defined as a phenomenon due to which the frequency of an allele encoding for a particular gene undergoes drastic change (increase or decrease) in a population due to random mating as well as natural selection.
  • In the given statement, one individual of an isolated population of piranhas underwent synonymous mutation in the beta-globin encoding gene.
  • A synonymous mutation can be defined as such a change in the nucleotide sequence of a gene that does not affect the sequence, structure or function of the protein encoded by it.
  • The increase in the frequency of the mutated form of the beta-globin gene after five generations to 5% indicates that due to the impact of random mating or natural selection or both, this has happened.
6 0
3 years ago
1. Organs and tissues that perform the same function are called ___________.
victus00 [196]

Answer:

D. organ systems

Explanation:

Organs and tissues that perform the same function are called organ systems

7 0
3 years ago
A recent study reported by de meyer and others revealed that _____, which is a protein fragment that forms plaques in the brain,
FinnZ [79.3K]
The answer is amyloid beta. They clump together and form plaques. The formed plaque can block signals transmitted from one cell to another cell. In addition, the plaque can cause swelling, especially in the area where it is formed. It can also digest the disabled cells. This type of plaque is very common among patients with Alzheimer's Disease.




5 0
3 years ago
MARKING PEOPLE AS BRAINLIST ⚠️⚠️⚠️<br><br> Give three pros and cons of fire suppression
IrinaK [193]
Cons:
It kills animals
It destroys land and trees
It ruins animals homes

Pros
It clears up lane so we can build
Some rare animals need fire to reduce overhanging plants to live ( it’s called a karner blue Caterpillar btw)
And fire is a natural phenomenon that nature has evolved with
4 0
3 years ago
Most dissolved carbon in the ocean is used to form which structure in marine organisms?
Ber [7]
<span>counteracted acidification</span>
6 0
3 years ago
Read 2 more answers
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