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Butoxors [25]
3 years ago
11

What force is the sum of all the forces that act upon an object

Biology
2 answers:
ser-zykov [4K]3 years ago
7 0

Answer:

Net force or resultant force

Explanation:

When a  number of forces act in different directions on an object.We know that force is a vector quantity so it has both magnitude and directions.

When all forces act upon an object cancel out to each other.Then the sum of forces is zero.The sum of forces is called net force or resultant force.Then , we say resultant force act upon an object is zero.If the forces are unbalanced then the resultant force cause an acceleration of the object.

Suppose F_1,F_2,F_3 act upon an object in the same direction, then the resultant force

\vec{F}=\vec{F_1}+\vec{F_2}+\vec{F_3}

Hence, the net force or resultant force is the sum of all the forces that act upon an object .

Vsevolod [243]3 years ago
3 0
The net force<span> is the vector </span>sum of all the forces that act upon an object<span>. That is to say, the net </span>force is the sum of all the forces<span>, taking into account the fact that a </span>force<span> is a vector and two </span>forces<span> of equal magnitude and opposite direction will cancel each other out</span>
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An individual with Huntington disease has two normal parents. What are plausible explanations for this pattern of inheritance? C
Vitek1552 [10]

Answer and Explanation:

The Huntington disease is caused by a mutation in the gene that codifies for the Huntingtin protein (Htt). The mutation produces an altered form of the protein leading to the neuron´s death in certain areas of the brain.

The Huntington disease characterizes for being,

  • Hereditary, passing from generation to generation. To express the disease, a person must have been born with an altered gene.
  • Autosomal, affecting men and women equally, because the mutated gene is located on an autosomal chromosome.
  • Dominant, which means that by getting only one copy of the altered gene coming from any of the parents, the receiving person will express the disease. The mutation in the gene dominates over the normal gene copy.
  • Expressed by heterozygosis. Most people affected by the disease are heterozygous, with a normal copy and a mutated copy.

There are just a few cases all around the world (3% approximately) in which the disease is expressed with no family history. The progenitors are not affected by the mutation. These cases are very rare and are called <u>"de-novo" mutations.</u> A new mutation is spontaneously produced and it is not inherited from any of the parentals. It consists of an increase in the number of CAG repetitions. In a normal person, the number of CAG repetitions is less than 35. When there are 40 or more repetitions it occurs the disease. But when there are between 35 and 39 repetitions, the penetrance of the disease is incomplete. This is a "gray zone". Those alleles that fall in the gray zone are unstable and might produce the HD. Individuals with these unstable alleles have a tendency to increase the number of repetitions from generation to generation until the number reaches 40 repetitions and the person expresses the disease. This <u>usually occurs in the paternal germinal line</u>, as it is particularly unstable in sperm and probably meiosis greatly affects their instability, causing an increase in the number of CAG repeats.

6 0
3 years ago
A signal molecule in the interstitial fluid binds to a receptor on the cell membrane, triggering an intracellular cascade. Which
Lady bird [3.3K]
<h2>Function of The Cell Membrane</h2>

Explanation:

  • <em>There are a few unique kinds of this simple development of particles. It could be as basic as atoms moving uninhibitedly, for example, assimilation or dispersion.  </em>
  • Proteins are utilized to help move atoms all the more rapidly. It is a <em>procedure called encouraged dispersion.</em>
  • It could be as straightforward as acquiring a glucose particle. Since the cell film won't permit glucose to cross by dispersion.  
  • The cells are in a zone where there is a huge focus contrast. For instance, oxygen particle focuses could be exceptionally high outside of the cell and extremely low inside.
  • <em>Those oxygen particles are little to such an extent that they can cross the lipid bilayer and enter the cell.  </em>
  • <em>This is a water explicit procedure. For the most part, cells are in a domain where there is one convergence of particles outside and one inside.</em>
  • Since focuses like to be the equivalent, the cell can siphon particles in an out to remain alive. <em>Assimilation is the development of water over the layer</em>
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3 years ago
3. According to data from experiments with radioactive thymidine, the first labeled mitotic cells appear about 4 hours after the
ValentinkaMS [17]

Answer:

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5 0
2 years ago
Enzymes are biological catalysts. Explain what they do in living systems
Marizza181 [45]

An enzyme lowers the activation energy of a reaction so it can take place within living organism, so an enzyme is a biological catalyst.

7 0
2 years ago
A child has sickle-cell disease (ss) but neither parent is ill. What must be true of her parents’ genotypes? The father is heter
Andreyy89

Answer:

Both parents are heterozygous carriers.

Explanation:

Both parents are heterozygous carriers. Sickle Cell Anaemia is usually referred to as a recessive condition since an individual must have two copies of the sickle gene in order to have the disorder.

Since neither of the parents is ill, both of them must be heterozygous carriers for the child to have the disorder

3 0
3 years ago
Read 2 more answers
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