Living beings and their structure

What is the basic unit of life in all living beings?

• Atom

• Molecule

• Cell

• Tissue

Which of the following is NOT a characteristic of living beings?

• Growth

• Respiration

• Reproduction

• Non-reactivity to the environment

What structure controls the activities of a cell?
a)
b)
c)
d)
Answer: c) Nucleus

• Cytoplasm

• Cell membrane

• Nucleus

• Non of the above

Which type of tissue is responsible for the transportation of water in plants?

• Phloem

• Xylem

• Epidermis

• Cortex

Which part of the cell is responsible for controlling what enters and leaves the cell?
a) Cytoplasm
b)
c)
d)
Answer: c) Cell membrane

• Cytoplasm

• Cell wall

• Cell membrane

• Mitochondria

Which organelle is known as the powerhouse of the cell?

• Mitochondria

• Ribosome

• Endoplasmic reticulum

• RNA

What is the main difference between plant and animal cells?

• Presence of cell wall in plant cells

• Presence of nucleus in animal cells

• Absence of mitochondria in plant cells

• Absence of ribosomes in animal cells

What term is used to describe the process by which cells divide to form new cells?

• Respiration

• Photosynthesis

• Cell division

• Transpiration