Biology MCQ test Flashcards
What is the basic unit of life?
Cell
Cells are the smallest structural and functional units of living organisms.
Define ‘organism’.
An individual living entity
Organisms can be unicellular or multicellular.
What process do plants use to convert sunlight into energy?
Photosynthesis
Photosynthesis occurs in chloroplasts and involves converting carbon dioxide and water into glucose and oxygen.
Fill in the blank: The ______________ is a membrane-bound structure that contains the genetic material in eukaryotic cells.
Nucleus
True or False: All living organisms are made up of cells.
True
This is known as the cell theory.
What are the two main types of cells?
Prokaryotic and Eukaryotic
Prokaryotic cells lack a nucleus, while eukaryotic cells have a nucleus.
What is the role of ribosomes in a cell?
Protein synthesis
Ribosomes can be found free in the cytoplasm or attached to the endoplasmic reticulum.
Fill in the blank: The ___________ is responsible for controlling what enters and exits the cell.
Cell membrane
What is the function of mitochondria?
Energy production
Mitochondria are known as the powerhouses of the cell.
Define ‘tissue’.
A group of similar cells that perform a specific function
Tissues are organized into organs.
What is the primary function of the chloroplast?
Photosynthesis
Chloroplasts contain chlorophyll, which captures light energy.
Fill in the blank: The ___________ is a jelly-like substance inside the cell where organelles are found.
Cytoplasm
What are the four main types of tissues in animals?
Epithelial, connective, muscle, and nervous
Each tissue type has distinct structures and functions.
True or False: The cell wall is present in animal cells.
False
Cell walls are found in plant cells, fungi, and some prokaryotes.
What is the role of the endoplasmic reticulum?
Protein and lipid synthesis
The rough ER is studded with ribosomes, while the smooth ER is involved in lipid production.
Fill in the blank: The ___________ is involved in packaging and transporting proteins.
Golgi apparatus
What is the function of lysosomes?
Digestion of waste materials and cellular debris
Lysosomes contain digestive enzymes.
