Science, Recall From Year 7, Cells Flashcards
What is the basic unit of life?
Cell
True or False: All living organisms are made up of cells.
True
What part of the cell contains genetic material?
Nucleus
Fill in the blank: The _____ is responsible for producing energy in the cell.
Mitochondria
Which part of the cell is selectively permeable?
Cell membrane
What is the jelly-like substance inside the cell called?
Cytoplasm
Multiple Choice: Which of the following is NOT a part of a prokaryotic cell? A) Nucleus B) Ribosome C) Cell wall D) Plasma membrane
A) Nucleus
What are the small structures within a cell that perform specific functions called?
Organelles
True or False: Ribosomes are responsible for protein synthesis.
True
Fill in the blank: The _____ is responsible for packaging and transporting proteins.
Golgi apparatus
What organelle is involved in the production of lipids?
Smooth endoplasmic reticulum
Multiple Choice: Which state of matter has a definite shape and volume? A) Solid B) Liquid C) Gas D) Plasma
A) Solid
What are the three primary states of matter?
Solid, liquid, gas
True or False: In a liquid, the particles are tightly packed and vibrate in place.
False
What is the term for the smallest unit of an element?
Atom
Fill in the blank: _____ are negatively charged particles found in an atom.
Electrons
Multiple Choice: Which of the following describes a gas? A) Definite shape and volume B) No definite shape or volume C) Definite volume but no definite shape D) All of the above
B) No definite shape or volume
What is the term for the change of a substance from solid to liquid?
Melting
True or False: The nucleus contains protons and neutrons.
True
What is the function of lysosomes in a cell?
Digestion and waste removal
Fill in the blank: The _____ is a network of protein filaments that helps maintain cell shape.
Cytoskeleton
What is the primary function of the cell wall in plant cells?
Provide structure and support
Multiple Choice: Which particle is found in the nucleus of an atom? A) Electron B) Proton C) Neutron D) Both B and C
D) Both B and C
True or False: Osmosis is the movement of water across a selectively permeable membrane.
True
What is the process by which cells divide to form new cells?
Cell division
What is the main function of the cell wall in plant cells?
To provide structural support and protection.
True or False: Animal cells have a cell wall.
False
Fill in the blank: The _______ is a membrane-bound organelle that contains the cell’s genetic material.
nucleus
Which organelle is responsible for photosynthesis in plant cells?
Chloroplast
What is the primary function of the vacuole in plant cells?
To store nutrients and waste products.
Multiple Choice: Which of the following is NOT found in animal cells? A) Mitochondria B) Chloroplast C) Ribosomes D) Nucleus
B) Chloroplast
What is the jelly-like substance inside both plant and animal cells called?
Cytoplasm
True or False: Ribosomes are involved in protein synthesis.
True
Fill in the blank: The _______ is responsible for packaging and distributing proteins within the cell.
Golgi apparatus
What type of cell has a large central vacuole?
Plant cell
Multiple Choice: Which of the following structures is involved in energy production? A) Cell wall B) Mitochondria C) Ribosome D) Endoplasmic reticulum
B) Mitochondria
What is a pure substance?
A material that has a constant composition and consistent properties.
True or False: Water is an example of a pure substance.
True
Fill in the blank: A substance that cannot be broken down into simpler substances by chemical means is called a _______.
element
Which organelle is known as the powerhouse of the cell?
Mitochondria
Multiple Choice: Which part of the plant cell is selectively permeable? A) Cell wall B) Plasma membrane C) Chloroplast D) Nucleus
B) Plasma membrane
What is the role of the endoplasmic reticulum in the cell?
To synthesize proteins and lipids.
True or False: Lysosomes contain enzymes that break down waste materials.
True
Fill in the blank: The _______ is involved in the synthesis of ATP in cells.
mitochondria
What distinguishes plant cells from animal cells?
Plant cells have a cell wall, chloroplasts, and large vacuoles.
Multiple Choice: Which of the following is a characteristic of pure substances? A) Variable composition B) Fixed composition C) Mixture of elements D) Contains impurities
B) Fixed composition
What is the primary function of chloroplasts?
To convert light energy into chemical energy through photosynthesis.
True or False: Animal cells do not contain chloroplasts.
True
Fill in the blank: The _______ is responsible for detoxifying harmful substances in the cell.
smooth endoplasmic reticulum
Multiple Choice: Which of the following is a component of the cell membrane? A) DNA B) RNA C) Phospholipids D) Cellulose
C) Phospholipids
