Which one is incorrect

(1)Mycoplasmas are greater than bacteria

(2)largest isolated cell is ostrich egg

(3)Nerve cells are longest cells

(4)The shape of the cell may vary with  the function they perform

Nerve cell is

(1)largest and branched

(2)longest and branched

(3)longest and unbranched

(4)largest and unbranched

Which of the following represents the prokaryotic cell

1. bacteria, blue-green algae, mycoplasma, PPLO

2. bacteria, blue-green algae, microbes, chlorella

3. bacteria, blue-green algae, slime moulds and Diatoms

4. bacteria, blue-green algae only

Which of the following is incorrect match

(1)bacillus- rod like

(2)coccus-comma shaped

(3)vibrio-comma shaped

(4)spirillum-spiral

Which of the following is true about prokaryotic cell

(1)no well-defined nucleus

(2)naked genetic material

(3)nuclear membrane is absent

(4)All of the above

Which of the following is not true about plasmid

(1) extra chromosomal DNA

(2)give unique genotypic characters to bacteria

(3)helps in antibiotic resistance

(4)helps in reproduction

The common organelle present in both eukaryotes and prokaryotes is

1. Vacuole

2. cell membrane

3. ribosome

4. centrosome

Which of the following is the characteristic of  prokaryotes

(1)mesosome

(2)naked DNA

(3)plasmid

(4)All of the above

Arrange the following in the increasing of their size

(1)virus< PPLO< typical bacteria< typical eukaryotic cell

(2) PPLO< virus< typical bacteria< typical eukaryotic cell

(3) virus< PPLO< typical eukaryotic cell< typical bacteria

(4) virus> PPLO> typical bacteria> typical eukaryotic cell

The detailed structure of the cell membrane was studied only after the advent of the

(1)compound microscope

(2)cryo-electron microscopy

(3)X-ray crystallography

(4)electron microscope