1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
oksian1 [2.3K]
3 years ago
11

Choose all the answers that apply.

Biology
2 answers:
svp [43]3 years ago
8 0

Answer:

Genetics has a role in the development  of neurodegenerative diseases like Parkinson's disease , ALS and Alzheimer's disease.

Explanation:

Neurodegenerative diseases are disorders caused by the progressive loss of structure or function of neurons (degeneration) in the peripheral nervous system or the central nervous system. The neurodegenerative diseases like Parkinson's disease , ALS and Alzheimer's disease are caused by various genetic and environmental factors.

Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease in which the motor neurons degenerate and the muscles begin to waste away as they no longer receive signals from the brain. It is characterized by stiff muscles, muscle twitching, progressive muscle weakness from muscle wasting where most patients are unable to walk or use their arms and eventually develop difficulty in speaking, swallowing and breathing. The genetic factors related to ALS include altered RNA metabolism, presence of protein aggregates in motor neurons due to gene mutations etc.

Alzheimer’s disease (AD) begins with short term memory loss and is characterized behaviorally by progressive decline in cognitive function resulting in dementia. The characteristics of this disease includes buildup of misfolded tau protein, associated neurofibrillary tangles, and amyloid-beta senile plaques in the brain. Several genetic factors contributing to AD include mutations to the amyloid precursor protein (APP) and presenilins 1 and 2 genes.

Parkinson's disease (PD) is a degenerative disorder that mainly affects the motor system and the symptoms are shaking, rigidity, slowness of movement, difficulty with walking and dementia. Genetic factors include mutations to the alpha-synuclein gene.

Verdich [7]3 years ago
4 0

Answer:

for sure parkinsons disease i read ''Parkinson's disease can affect both young and older people. Age is the main risk factor, but scientists believe that genetics and environmental factors also play a role.''

____

Explanation:

You might be interested in
Which was least likely to have been a component of Earth’s atmosphere before life began?A-sulfurB-carbon dioxideC-oxygenD-water
Burka [1]

The correct answer is Oxygen.

The surface of the Earth was liquefied. As the Earth cooled, an atmosphere generated primarily from gases erupted from volcanoes. It constituted methane, hydrogen sulfide, and ten to 200 times as much as carbon dioxide in comparison to today's atmosphere.

It was considered that there was an extreme volcanic activity for the initial billion years of the existence of the Earth. The initial atmosphere was possibly majority carbon dioxide will no or little concentration of oxygen. There were slight quantities of ammonia, water vapor, and methane.

8 0
3 years ago
. Given that 3 of the 64 possible codons are stop codons, what is the chance of having a stop codon at any given position, assum
ANTONII [103]

Answer:

1 - (\frac{61}{64})^n

Explanation:

Given

There are three stop codon

TAA, TAG, TGA.

Out of 64 available codons, 3 are stop codon thus the remaining are non-stop codon.

So the probability of choosing a non stop codon is

\frac{61}{64}

Let us suppose the number of trials are "x" then the probability of choosing a non stop codon is  

(\frac{61}{64})^x\\

Probability of choosing a stop codon is equal to

1 - probability of choosing a non stop codon

1 - (\frac{61}{64})^n

4 0
3 years ago
13. A change in pH is able to cause protein denaturation because
Triss [41]

Answer:

The correct answer is Option a. The amino group is sensitive to OH-.

Explanation:

Protein denaturation means change in the structure of the amino acid. Amino acid is sensitive to various environmental factors such as pH. If the pH of the medium increases or decreases from optimum level, denaturation of protein occurs. Hydrogen bond is present in between amino acid molecules. When pH changes, hydrogen bond is disturbed and structure of protein changes.

8 0
3 years ago
Which cacti was the most fit in this specific environment? How do you know?
nikklg [1K]

Answer:

The cactus on the right, because it survives the whole time.

Explanation:

7 0
2 years ago
Read 2 more answers
In a population of woolybeasts, individuals with long snouts tend to survive better on an island that has burrowing termites. Ov
zubka84 [21]

Answer:

The correct answer is A. stabilizing selection

Explanation:

Stabilizing selection is one type of natural selection that occurs when the population having non-extreme traits are stabilized. It results in overexpression of a particular trait in a population. Here most average individual gets selected.

So as the stabilizing selection favors the middle phenotype and not extreme phenotypes it decrease the genetic variation. So here individuals who are having extremely long snout are selected therefore a particular trait is selected and overexpressed in the population. So it is an example of stabilizing selection.

7 0
3 years ago
Read 2 more answers
Other questions:
  • Consumers engage in limited search for items like midrange fashion apparel, home furnishings, and appliances. These are examples
    12·1 answer
  • Which unit consists of a group of people and the place where they live
    13·2 answers
  • 10 POINTS Which organisms belong to the Kingdom Protista?
    12·2 answers
  • what sources of information are considered reliable according to the strict standards of scientific investigation?
    13·1 answer
  • What does deforestation mean?
    15·2 answers
  • In what direction do all arteries carry blood​
    14·2 answers
  • What is the sequence of bases on DNA strand b from left to right<br> (See picture)
    5·2 answers
  • Food web stabitlity is most dependent on ____?
    7·1 answer
  • I need the answer please
    15·1 answer
  • Biosphere
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!