Cell Biology Flashcards
(26 cards)
What is the basic unit of life?
The cell.
True or False: Prokaryotic cells have a nucleus.
False.
Fill in the blank: The semi-permeable membrane surrounding a cell is called the __________.
plasma membrane.
What organelle is responsible for energy production in eukaryotic cells?
Mitochondria.
Which structure is responsible for protein synthesis?
Ribosomes.
Multiple choice: Which of the following is NOT a part of the cell theory? A) All living things are composed of cells B) Cells are the basic unit of structure and function C) Cells can arise from non-living matter D) All cells come from pre-existing cells.
C) Cells can arise from non-living matter.
What is the function of the cell wall in plant cells?
To provide structure and protection.
True or False: Lysosomes are involved in digestion and waste removal.
True.
What is the jelly-like substance inside a cell called?
Cytoplasm.
Fill in the blank: The genetic material of a cell is found in the __________.
nucleus.
Multiple choice: Which of the following organelles is known as the ‘powerhouse of the cell’? A) Golgi apparatus B) Mitochondria C) Endoplasmic reticulum D) Ribosome.
B) Mitochondria.
What is the role of the Golgi apparatus?
To modify, sort, and package proteins and lipids.
True or False: Chloroplasts are found in animal cells.
False.
What is the function of the endoplasmic reticulum (ER)?
To synthesize proteins and lipids.
Fill in the blank: The __________ is a network of protein filaments that helps the cell maintain its shape.
cytoskeleton.
Multiple choice: Which type of cell division results in two identical daughter cells? A) Mitosis B) Meiosis C) Binary fission D) Budding.
A) Mitosis.
What is apoptosis?
Programmed cell death.
True or False: Ribosomes can be found floating freely in the cytoplasm or attached to the rough ER.
True.
What is the primary function of the plasma membrane?
To regulate what enters and exits the cell.
Fill in the blank: The __________ is a double membrane that encloses the nucleus.
nuclear envelope.
Multiple choice: In which phase of the cell cycle does DNA replication occur? A) G1 phase B) S phase C) G2 phase D) M phase.
B) S phase.
What is the role of centrioles during cell division?
To help organize the spindle fibers.
True or False: The smooth endoplasmic reticulum is involved in lipid synthesis.
True.
What is a key difference between prokaryotic and eukaryotic cells?
Prokaryotic cells lack a nucleus; eukaryotic cells have a nucleus.
