Home
Class 12
BIOLOGY
Mark these statement as true (T) OR fals...

Mark these statement as true (T) OR false (F) and select the correct option
In eukaryotes,only one type of DNA-dependent RNA polymerase transcribes all types of RNAs
The human gemone has approximately 30000 genes
The untranslate regions (UTRs) of m-RNA are required for efficient translation process.

A

A(F), B(F), C(T)

B

A(F), B(T), C(T)

C

A(T), B(T), C(F)

D

A(T), B(F), C(T)

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we will evaluate each statement one by one and determine whether they are true (T) or false (F). ### Step-by-Step Solution: 1. **Evaluate the first statement:** - **Statement:** "In eukaryotes, only one type of DNA-dependent RNA polymerase transcribes all types of RNAs." - **Analysis:** This statement is false. In eukaryotes, there are three types of RNA polymerases: - RNA Polymerase I: Transcribes rRNA (except 5S rRNA). - RNA Polymerase II: Transcribes mRNA and some snRNA. - RNA Polymerase III: Transcribes tRNA, 5S rRNA, and other small RNAs. - **Conclusion:** This statement is **False (F)**. 2. **Evaluate the second statement:** - **Statement:** "The human genome has approximately 30,000 genes." - **Analysis:** This statement is also false. The current estimate of the number of genes in the human genome is approximately 20,000 to 25,000 genes. - **Conclusion:** This statement is **False (F)**. 3. **Evaluate the third statement:** - **Statement:** "The untranslated regions (UTRs) of mRNA are required for the efficient translation process." - **Analysis:** This statement is true. UTRs play crucial roles in the regulation of translation and stability of mRNA. They are important for the initiation of translation and can affect the efficiency of the process. - **Conclusion:** This statement is **True (T)**. ### Final Answers: - First statement: **False (F)** - Second statement: **False (F)** - Third statement: **True (T)** ### Correct Option: Based on the evaluations, the correct option is: - A is false, B is false, C is true.
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

Assertion : There is single DNA-dependent RNA polymerase that catalyses transcription of all types of RNA (mRNA, tRNA and rRNA) in eukaryotes. Reason : In bacteria, there are at least three RNA polymearases are required.

Consider the following statements with respect to translation. A. Translation refers to the process of polymerisation of ribonucleotides. B. The site of translation (protein synthesis) is ribosomes. (D) An m-RNA also has untranslated regions (UTR) that are not translated. Of the above statements :

Read the statements regarding the lac operon and choose the correct option. 1. An inducer regulates the switching on and off of lac operon. 2. Repressor protein dissociates from operator region and prevents RNA polymerase from transcribing the operon. 3. In the presence of lactose, the repressor is activated by interaction with lactose. 4. RNA polymerase has access to the promoter and transcription proceeds only when the repressor is inactivated.

Consider the following three statements related to the human male reproductive system and select the correct option stating which ones are true (T) and which ones are false (F). Middle piece of spermatozoon is also termed as power house of spermatozoon. (ii) Vas deferens joins a duct from seminal vesicle and form vasa efferentia. (iii) Semen is a collection of secretions from the seminal vesicles, prostate gland and Cowper's glands and sperms from testes.

Consider the following four statements (i) - (iv) and select the correct option stating which ones are true (T) and which ones are false (F) (i) The epithelium of proximal convoluted tobule (PCT) of nephron in the kidney has microvilli (ii) Simple epithelium covers the dry surface of the skin, the moist surface of buccal cavity, pharynx, inner lining of salivary glands and of pancreatic ducts (iii) The wall of internal organs such as the blood vessels, stomach and intestine contains skeletal muscle (iv) Bone marrow in some bones is the site of production of blood cells.

Consider the following four statements (i) - (iv) and select the correct option stating which ones are true (T) and which ones are false (F). (i) The epithelium of proximal convoluted tubule (PCT) of nephron in the kideney has microvilli. (ii) Simple epithelium covers the dry surface of the skin, the moist surface of buccal cavity, pharynx, inner lining of ducts of salivary glands and of pancreatic ducts. (iii) The wall of internal organs such as the blood vessels, stomach and intestine contains skeletal muscle. (iv) The earthworm nervous system is basically represented paired nerve cord.

select true (T) or false (F) for the following statements and choose the correct option. A. QB bacteriophage has RNA as genetic material. B. Free 2'OH of RNA makes it more labile and easily degradable. C. The experiment of Hershey and chase gave unequivocal proof that DNA is the genetic meterial.