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
nadezda [96]
3 years ago
14

The proposed cause of CJD and kuru in humans, mad cow disease, and scrapie in sheep is a change in a brain protein. Disease vict

ims appear to have a protein that should normally contain alpha helices but instead they have changed into a protein made of beta pleated sheets. The disease appears to spread when the abnormal protein comes into contact with the normal protein, causing it to become deformed. Which level of protein structure is associated with these diseases?
Biology
1 answer:
TiliK225 [7]3 years ago
3 0

Answer:

secondary structure

Explanation:

Alpha helices and beta sheets are two main structural forms in secondary structure of proteins. This structures are formed spontaneously. The next step of protein structure formation is folding into tertiary three-dimensional form.

In diseases such as CJD and kuru, protein prion is changed in structure. It is not known how degeneration of priones protein structure occurs, but it can lead to neurodegenerative diseases which can even be fatal.

Priones are also known as proteinaceous infectious particles.

You might be interested in
A scientist investigated DNA replication in two groups of cells, labeled A and B. She injected radioactively labeled nucleotides
hichkok12 [17]

Answer:

A is a eukaryotic cell while B is a prokaryotic cell

Explanation:

The researcher can conclude that <u>cell A is eukaryotic while cell B is prokaryotic.</u>

In eukaryotic cells, the <u>DNA is located majorly in the nucleus and the replication of the DNA happens in the nucleus</u>. Hence, it is only logical to find segments of new DNA in the nucleus of cell A during replication.

<u>Prokaryotic cells, however, lack a nucleus</u>. Their DNAs lie freely within the cytoplasm. This thus means that replication can only happen in the cytoplasm. Hence, it follows logically to find a new DNA segment in the cytoplasm of cell B.

3 0
2 years ago
Secondary succession occurs in an area where the community ha been destroyed and the soil has been ______.
Triss [41]
I believe the blank space is preserved :)
7 0
3 years ago
PLZ ANSWER QUICKLY, WILL GIVE BRAINLIEST
liq [111]
You are missing part of the question but color blindness it less likely to be found in female because it is a sex trait that lies on the x gene while also being submissive trait sry I forgot the word. Guys only have one x gene meaning they are much more likely to get it
4 0
3 years ago
Fully explain how cellular respiration is a chemical process whereby the bonds of food molecules and oxygen molecules are broken
Marianna [84]
Cellular respiration is a metabolic pathway that breaks down glucose and produces ATP. The stages of cellular respiration include glycolysis, pyruvate oxidation, the citric acid or Krebs cycle, and oxidative phosphorylation.

During cellular respiration, a glucose molecule is gradually broken down into carbon dioxide and water. Along the way, some ATP is produced directly in the reactions that transform glucose. Much more ATP, however, is produced later in a process called oxidative phosphorylation. Oxidative phosphorylation is powered by the movement of electrons through the electron transport chain, a series of proteins embedded in the inner membrane of the mitochondrion.
These electrons come originally from glucose and are shuttled to the electron transport chain when they gain electrons.


As electrons move down the chain, energy is released and used to pump protons out of the matrix, forming a gradient. Protons flow back into the matrix through an enzyme called ATP synthase, making ATP. At the end of the electron transport chain, oxygen accepts electrons and takes up protons to form water. Glycolysis can take place without oxygen in a process called fermentation. The other three stages of cellular respiration—pyruvate oxidation, the citric acid cycle, and oxidative phosphorylation—require oxygen in order to occur. Only oxidative phosphorylation uses oxygen directly, but the other two stages can't run without oxidative phosphorylation.). As electrons move down the chain, energy is released and used to pump protons out of the matrix, forming a gradient. Protons flow back into the matrix through an enzyme called ATP synthase, making ATP. At the end of the electron transport chain, oxygen accepts electrons and takes up protons to form water.
Glycolysis can take place without oxygen in a process called fermentation. The other three stages of cellular respiration—pyruvate oxidation, the citric acid cycle, and oxidative phosphorylation—require oxygen in order to occur. Only oxidative phosphorylation uses oxygen directly, but the other two stages can't run without oxidative phosphorylation.
6 0
2 years ago
Help meee plsss I wanna cry
Sonja [21]

Explanation:

Amount of water the water park uses per day

3 0
2 years ago
Other questions:
  • Is Mike Vargas soft?
    11·2 answers
  • What is the difference between a monohybrid cross and a dihybrid cross?
    5·1 answer
  • Plant cells swell if water enters them through?​
    15·1 answer
  • Choose the following that is NOT a physiological benefit of exercise. *
    5·1 answer
  • Explain what a concentration gradient is and how it is used in cellular respiration.
    11·1 answer
  • Pleaseee helppppp!!!! <br> the most can be just like 4 sentences<br> 20 points !!!!!
    6·1 answer
  • What is the importance of the carbon and nitrogen cycles to ecosystems?
    12·1 answer
  • Cual es la funcion de la vacuola
    13·2 answers
  • Correlate crossing-over with genetic linkage
    12·1 answer
  • The central nervous system (CNS) is composed of the spinal cord and brain. ALL BUT ONE of the choices below describe
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!