Prokaryotic Cell

Q.

What are the benefits of bacteria?

Q. Which of the following is not a prokaryote?

1. Cyanobacteria
2. Mycoplasma
3. Archaebacteria
4. Protozoans

Q.

Do bacteria have circular DNA?

Q.

Which of the following is seen only in prokaryotic cells?

1. Dictyosomes

2. Endoplasmic reticulum

3. Mesosomes

4. DNA

5. Ribosomes

Q. Which of the following statements is correct regarding the genomic DNA of bacteria?

1. DNA is circular, not associated with histone proteins, and organised into a single chromosome
2. DNA is linear, not coiled around histone proteins, and organised into a single chromosome
3. DNA is circular, associated with histone proteins, and organised into two chromosomes
4. DNA is linear, associated with histone proteins, and organised in two chromosomes

Q.

Axoneme having 9 + 2 doublet microtubule arrangement is found in

1. Cilia and flagella

2. Flagella

3. Cilia

4. Centriole

Q.

What is the structure of eukaryotic cells?

Q.

Where is prokaryotic cell found?

Q.

In bacteria, cell membrane form invaginations in cytoplasm and are called _______.

Q. Which of the following prokaryotic cells lacks a cell wall?

1. Cyanobacteria
2. Actinomycetes
3. Mycoplasma
4. Archaebacteria

Q.

Which of the following statements about a prokaryotic cell is incorrect?

1. It has no Golgi apparatus

2. It is generally smaller than a eukaryotic cell

3. It has an impermeable membrane that encloses the DNA

4. Electron transport chain takes place at the cell membrane

Q. Microtubules are absent in

Q. What is the main differentiating feature between eukaryotic and prokaryotic cells?

1. Plasma membrane
2. DNA structure
3. Membrane-bound organelles
4. Cytoplasm

Q. are fine, hairlike bristles that helps a bacteria to adhere to surfaces.

1. Glycocalyx
2. Fimbriae
3. Pili
4. Flagella

Q. PPLO means:

1. Pleuro Pneumonia Like Organisms
2. Poly Pneumonia Like Organisms
3. Prokaryotic Pleural Like Organisms
4. Pleural Pneumococcal Like Organisms

Q. The presence of an extrachromosomal circular DNA called as a plasmid is a characteristic feature of

1. fungi
2. plants
3. animals
4. prokaryotes

Q.

Are humans prokaryotic?

Q. A multicellular organisms could be composed of prokaryotic cells too.

1. False
2. True

Q. Inclusion bodies of blue-green, purple and green photosynthetic bacteria are:

1. Centrioles
2. Contractile vacuoles
3. Gas vacuoles
4. Microtubules

Q. Identify the correct statements from the following.
1. In bacteria, negatively charged DNA is held by positively charged proteins in the nucleoid region.
2. Bacterial DNA is present in the nucleus.
3. The DNA of bacteria is associated with histones.
4. Bacteria have smaller, circular DNA molecules called plasmids.

Q.

explain the dikaryotic phase in fungi?

Q. Pair up the bacteria with their shapes.

1. 
2. Bacillus
3. Spirillum
4. 
5. 
6. Cocci
7. 
8. Vibrio

Q. explain the chloroplast shape diversity found in algae?

Q.

What is the meaning of single strnded or double stranded DNA and RNA ?

Q. Prokaryotic ribosomes have larger subunit and smaller subunit.

1. 30S
2. 60S
3. 50S
4. 40S

Q.

What are the characteristics of prokaryotic cells?