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
Ierofanga [76]
3 years ago
10

In numerous studies, treatment of prion preparations with ionizing and UV radiation does not reduce transmission of disease; how

ever, treatment with denaturants reduces disease transmission. What can be inferred from these observations?
Choose all the true statements.
A. Prions do not contain genetic information, which is affected by ionizing radiation.
B. Denaturants may affect the tertiary structure of prions.
C. Prions are proteins.
Biology
1 answer:
mel-nik [20]3 years ago
7 0

Answer:

A. Prions do not contain genetic information, which is affected by ionizing radiation.

B. Denaturants may affect the tertiary structure of prions.

C. Prions are proteins.

Explanation:

Prions are the proteinaceous infectious particles that cause many degenerative diseases of neurons in both animals and humans. They consist of only protein and no DNA or RNA. Due to the absence of DNA or RNA as genetic material, these infectious particles are resistant to ionizing radiation. Ionizing radiations affect nucleic acids of pathogens to destroy them.

Denaturation of proteins affects their secondary and tertiary structures and leave them non-functional. Denaturation may be caused by changes in temperature, pH, disturbance of hydrogen bonds, etc. Therefore, to destroy prions, they need to be denatured.

You might be interested in
Which of these organic molecules would provide the greatest amount of energy per gram of the substance
Elan Coil [88]
Lipids would be the answer that you are looking for. When talking food energy it's best to speak in terms of calories. Therefore, lipids or fats offer the greatest amount of heat or energy.
7 0
3 years ago
What do Ice crystal in meat signifying
vladimir2022 [97]

Explanation:

Ice crystals in meat signify that it is frozen,a bunch of water molecules within the food form to keep the meat hydrated .

I hope it's helpful!

6 0
3 years ago
What would be the best explanation for why myelinated fibers conduct signals faster than unmyelinated fibers?
Sliva [168]

Answer: The diffusion of ions along the axoplasm is faster,in myelinated compare to unmyelinated,

Neurons are the structural and functioning units of nervous system.They are the vehicles for transmission of impulses as electrical signals from one part of the cells,and from one part of the body to another.

The basic structural components of a typical neuron are the cellbody, the axon, and the dendrites.

Based on structure neurons are classified as myelinated and unmyelinated.This is based on the the surrounding layer of myelin sheath around the axon. The myelin provides the insulating layer for the axon.And ensures fast movement of impluses.

In myelinated neurons the myelin sheath are interrupted at intervals by gaps along the length of the axon called Nodes of Ranvier. These gaps contains more Na-K channels for influx and out-flux of K and Na+ ions for transmission of impulses.

The cytoplasm of axon is called axoplasm,Since this is surrounded by myelin sheath which contains Na-K+ channels,The rate of diffusion of ions along  these channels is faster for depolarization to take place than in unmyelinated neurons. Inaddtion as these ions  diffusion increases,its jump faster at the nodes of Ranvier (saltatory conduction) to the next axoplasm which further speed up the rate of transmission.

Unmyeinated lacks myelin sheath,therefore the exchange and  the rate of diffusion of ions along the axons is low.

Explnation:

6 0
3 years ago
Why does you need to breathe more during exercise respiratory system?
swat32
If you don’t, you’ll either pass out or die.
3 0
3 years ago
What could be the consequence of a mutation that changes the sequence of nucleotides in a promoter?
Korolek [52]

Answer:

The changes in the sequence of nucleotides present within a promoter is a prime cause of the defected transcriptional regulation, which may eventually result in disease. However, not every modification within the sequence of a promoter influences the regulation of transcription, it relies upon the nature and the location of the genetic defect.  

When a mutation results within the sequence of a promoter region it may hamper the usual procedures of gene stimulation by affecting the step by step alignment of the transcription factors at the promoter region. Therefore, as a consequence, a mutation within the sequence of a promoter may result in the enhancement or reduction in the level of mRNA and thus protein.  

4 0
3 years ago
Other questions:
  • _______ are made from chains of amino acids. They are the building blocks of tissues, such as skin and muscles. A. Metals B. Car
    15·1 answer
  • 10 POINTS + THANKS AND BRAINLIEST
    11·1 answer
  • As newts' poison became more toxic, the garter snake's resistance to it became more efficient. This is an example of
    14·1 answer
  • An industry dumps waste in an area adjacent to where minorities reside. what is this practice called?
    15·1 answer
  • Mrs. Rushing has 3 chemistry classes with 24 students in each. An experiment calls for each student to use 4 test tubes.
    12·2 answers
  • In contrast to ectotherms, endotherms
    10·1 answer
  • What does DNA provide the code for?
    13·2 answers
  • 1.The chemical equation for photosynthesis is 6CO2 + 12H20 + light energy= C6H1206 +602 + 6H2O
    15·1 answer
  • The two new cells formed after the completion of cytokinesis are called copied cells.
    5·2 answers
  • •Which best describes how an ionic bond forms ?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!