Home
Class 12
BIOLOGY
Select the correct statements. a. The...

Select the correct statements.
a. The most common form of prion disease that affects sheep is Creutzfeldt-Jakob disease.
b. A prion is a type of glycoprotein that can trigger normal proteins in the liver to fold abnormally .
c. Prions attack nerve cells producing naurodegerative brain disease.

A

a and b only

B

c only

C

b only

D

a,b and c

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze each of the three statements regarding prion diseases and determine their correctness. ### Step-by-step Solution: 1. **Analyze Statement A**: - "The most common form of prion disease that affects sheep is Creutzfeldt-Jakob disease." - **Evaluation**: This statement is incorrect. Creutzfeldt-Jakob disease (CJD) primarily affects humans, not sheep. The common prion disease affecting sheep is scrapie. 2. **Analyze Statement B**: - "A prion is a type of glycoprotein that can trigger normal proteins in the liver to fold abnormally." - **Evaluation**: This statement is also incorrect. Prions are misfolded proteins that primarily affect the brain, not the liver. They cause normal proteins in the brain to fold abnormally. 3. **Analyze Statement C**: - "Prions attack nerve cells producing neurodegenerative brain disease." - **Evaluation**: This statement is correct. Prions indeed lead to neurodegenerative diseases by affecting nerve cells in the brain. ### Conclusion: - After evaluating all three statements, we find that only Statement C is correct. Therefore, the correct option is **C only**.
Promotional Banner

Similar Questions

Explore conceptually related problems

Identify the correct pair of combination I. Viroid -Bovine spongiform encephalitis , II. Prion-Creutzfeldf-Jakob disease III. Measles Virus -Glycoprotein projecions IV. Rabies Virus-Polyhedral symmetry

Read the following statements carefully and find out the set of correct statements a. Suspension culture requires constant stirring at the rate of 100-250 rpm. b. Development of diseases in a plant depends on the interactions between host genotype and environment, but not on pathogen genotype c. Black rot of crucifers and red rot of sugarcane are diseasescaused by fungi. d. It is expected that 125 g of Methylophilus methylotrophus produces 12.5 tonnes of protein per day.

Select the correct statement. (a) Cholera, typhoid, tetanus are well-known diseases caused by viruses (b) Dinoflagellates, euglenoids and slime moulds are placed under kingdom Monera (c) Members of kingdom Protista are primarily aquatic (d) Dinoflagellates are the chief 'producers' in the oceans

How many of the following statements are INCORRECT ? i. Microbes comprise of diverse organism like protozoa, bacteria, fungi and microscopic plants, viruses , viroids and also prions that are proteinaceoius infectious agents. ii. Microbes like bacteria, viruses and many fungi can be grown on nutritive media to form colonies. iii. In our stomach, the LAB plays a very beneficial role in checking disease - causing microbes. iv. 'Toddy' , a traditional drink of some parts of southern India is made by fermenting sap from sugarcane.

Select the correct statement regarding lactobacillus acidophilus. A. They produce acids the coagulate and partially digest milk fat. B. They require a suitable temperature and medium for their multiplication. C. They play a beneficial role by checking disease-causing microbes in our stomach. D. They improve nutritional quality by increasing the amount of thiamine .

The most notable diseases caused by prions are A________ commonly called B_______ in cattle and its analogous variant C_______ in humans.