The Cellular Basis of Life (Leaving Cert Biology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
In which year did Robert Hooke first observe and name cells?
In which year did Robert Hooke first observe and name cells?
1665
Which two scientists proposed that all living organisms are composed of cells in the 1830s?
Which two scientists proposed that all living organisms are composed of cells in the 1830s?
Schleiden and Schwann
According to cell theory, where do all new cells come from?
According to cell theory, where do all new cells come from?
Pre-existing cells
Why are unicellular organisms limited in size?
Why are unicellular organisms limited in size?
Surface area to volume ratio constraints
Approximately how many cells does the human body contain?
Approximately how many cells does the human body contain?
30 trillion
What is the maximum magnification of a light microscope?
What is the maximum magnification of a light microscope?
×1500
What advantage do electron microscopes have over light microscopes?
What advantage do electron microscopes have over light microscopes?
They reveal ultrastructure details
If a cell measures 0.02 mm and appears 10 mm in an image, what is the magnification?
If a cell measures 0.02 mm and appears 10 mm in an image, what is the magnification?
×500
What is the function of the nucleus in a cell?
What is the function of the nucleus in a cell?
Control centre containing DNA
What is the plant cell wall made of?
What is the plant cell wall made of?
Cellulose
What process do chloroplasts carry out in plant cells?
What process do chloroplasts carry out in plant cells?
Photosynthesis
What does cell sap in plant vacuoles contain?
What does cell sap in plant vacuoles contain?
Water, salts, sugars, and pigments