Nucleus Quiz

Nuclei were first discovered by

• Strasburger

• Fonatana

• Robert Brown

• Robert Koch

Nucleus are absent in

• Red blood cells and bacterium

• Red blood cells, sieve cells and bacterium

• Red blood cells only

• None of these

Which of the following statements is true regarding the size of nucleus?

• The size of the nucleus is directly proportional to that of the cytoplasm

• The size of the nucleus depends on the total cell volume

• The size of the nucleus depends on the chromosome number

• All of these

Nucleus has

• DNA only

• DNA and protein only

• DNA, RNA and proteins

• None of these

Nuclear membrane is in continuous connection with

• SER

• RER

• Golgi apparatus

• Lysosomes

The protein network that lines the inner side of nuclear membrane is called

• Nucleolus

• Nuclear matrix

• Nuclear lamina

• Nuclear proteins

The no. of nuclear pores depends on the

• Size of the cell

• Transcriptional activity of the cell

• DNA content of the cell

• All of these

The most important function of the nuclear envelope is to

• Regulate nucleo cytoplasmic traffic

• Protect genetic material

• Prevent the entrance of active ribosomes into the nucleus

• Synthesise rRNAs

Nucleolus is a prominent acidophilic spherical body in the nucleus. The function is

• RNA synthesis

• DNA synthesis

• Histone synthesis

• Ribosomal subunit synthesis

The basic proteins of the nucleus are

• Nucleohistones

• Nucleoprotamines

• Both a & b

• None of these