Science Biology MCQ-196

General Science-Biology online Exam UPSC, CivilsPrelims, UPPSC, SSC, JPSC, NDA, CDS, RBI Exams



RNA differs from DNA in having

 
 
 
 

Select the correct answer.
1. Microtubules
2. Microfilaments
Which of the following is/are called the cytoskeleton of a cell?

 
 
 
 

The initiation factors for protein synthesis are located in

 
 
 
 

The term ‘meiosis’ was coined by

 
 
 
 

The eukaryotic organisms contain ribosome

 
 
 
 

The cellular and molecular control of programmed cell death is known as

 
 
 
 

Study the following statements
1. The term ‘Cell’ was first coined by Robert Hooke.
2. Plant cells are generally without lysosomes.
3. Cell wall present only in animal cells.
Which of the statement(s) given above is/are true?

 
 
 
 

Dynein is the unique protein of

 
 
 
 

Which one of the following organelles takes part in the formation of acrosome in human sperms?

 
 
 
 

DNA is mainly found in the following organelles
1. Mitochondria
2. Chloroplasts
3. Peroxisomes
4. Nucleus
Which of the statements given above are correct?

 
 
 
 

Match List I (Organelle) with List II (Common Name) and select the correct answer using the codes given below the lists.
List I List II
A Ribosome 1. Suicidal bag of cells
B Lysosome 2. Protein factory of cells
C Mitochondria 3. Controller of cell
D Nucleus 4. Power house of cell
Codes
ABCD

 
 
 
 

Consider the following statements
1. Hofmeister discovered thread-like structures inside the nucleus of Tradescantia.
2. These thread-like structures studied by Fleming in nuclei of salamander cells.
3. Waldeyer named them Chromosomes.
Which of the statement(s) given above is/are correct about chromosomes?

 
 
 
 

Mitochondria and Chloroplasts are concerned with the transfer of cellular energy. Is this statement correct?

 
 
 
 

Main function of Golgi bodies is

 
 
 
 

Which one of the following is smallest cell?

 
 
 
 

Study the following statements
1. Control room of the cell is Nucleus.
2. Nucleus was discovered by Robert Brown.
3. Nuclear envelope is absent in bacteria.
Which of the statement(s) given above is/are correct about nucleus?

 
 
 
 

Which is the correct order of phases in prophase-l?

 
 
 
 

Consider the following statements
1. A mitotic division is a direct cell division by simple cleavage of the nucleus.
2. Amitotic division takes place without spindle formation or the appearance of chromosomes.
3. It is also called as direct nuclear division.
Which of the above are correct?

 
 
 
 

Which chemical characteristic is not common in all living organisms?

 
 
 
 

A substance which is more tfiah 80% in the cell is

 
 
 
 

Mitochondrial cristae are site of

 
 
 
 

A plant cell differ from animal in having

 
 
 
 

Study the following statements
1. Nucleolus takes part in synthesis of ribosomal RNA.
2. Leucoplast represent colourless plastids.
3. Mitochondria is absent in bacteria.
Which of the statements given above are true?

 
 
 
 

Consider the following statements
1. In plant cells, cell wall is made up of cellulose, hemiceilulose and lignin.
2. The bacterial cell walls composed of protein-lipid-polysaccharides with two important chemical components as NAG (N-Acetyl glucosamine) and NAM (N-Acetyl muramic acid)
Which of the above statement(s) is/are correct about cell wall?

 
 
 
 

Consider the following statements
1. The DNA of all plants, animals and polyoma virus, is double-stranded bacteriophage T2, T4 and T6
2. The DNA of bacteriophage ?x 174 issingle-stranded.
Which of the above statements is/are correct about DNA?