Who discovered nucleus in 1831?

• Robert Hooke

• Robert Brown

• Rudolf Virchow

• T. Schwann

Which of the following cell organelles is absent in animal cells but present in a plant cell?

• Cell wall

• Cytoplasm

• cell membrane

• Mitochondria

Cell wall is mainly composed of

• Lipid

• Starch

• Cellulose

• Protein

Which of the following cell organelles contain RNA?

• Mitochondria

• Plastids

• Lysosomes

• Ribosomes

Which of the following cell organelles are sites of protein synthesis?

• Ribosomes

• Lysosomes

• Mitochondria

• Golgi Apparatus

A chromosome consists of DNA and

• Gene

• Lipids

• Proteins

• Carbohydrates