Unit 1 Flashcards
What is the basic unit of life?
The cell.
True or False: Prokaryotic cells have a nucleus.
False.
Fill in the blank: The __________ is the semi-permeable membrane surrounding the cell.
plasma membrane.
Which organelle is responsible for energy production?
Mitochondria.
What is the function of ribosomes?
Protein synthesis.
True or False: Eukaryotic cells have membrane-bound organelles.
True.
What structure contains the genetic material in eukaryotic cells?
Nucleus.
Which organelle is known as the ‘powerhouse of the cell’?
Mitochondria.
What is the primary function of the endoplasmic reticulum?
Synthesis and transport of proteins and lipids.
Fill in the blank: The __________ is involved in packaging and modifying proteins.
Golgi apparatus.
What is the role of lysosomes?
Digestion of waste materials and cellular debris.
Which structure is responsible for photosynthesis in plant cells?
Chloroplasts.
True or False: The cell wall is present in animal cells.
False.
What is the function of the cytoskeleton?
Maintaining cell shape and facilitating movement.
Which organelle is involved in detoxification and lipid metabolism?
Smooth endoplasmic reticulum.
Fill in the blank: The __________ is a network of protein filaments that helps the cell maintain its shape.
cytoskeleton.
What is the function of the plasma membrane?
Regulating the entry and exit of substances.
Multiple Choice: Which of the following is NOT a component of the cell theory? A) All living things are made of cells B) Cells are the basic unit of life C) Cells can arise spontaneously D) All cells come from pre-existing cells
C) Cells can arise spontaneously.
What is the main difference between prokaryotic and eukaryotic cells?
Prokaryotic cells lack a nucleus and membrane-bound organelles.
True or False: Ribosomes can be found freely floating in the cytoplasm or attached to the rough endoplasmic reticulum.
True.
What is the primary role of the vacuole in plant cells?
Storage of substances and maintaining turgor pressure.
Fill in the blank: The __________ is a jelly-like substance that fills the cell and holds organelles in place.
cytosol.
What is the structure that protects plant cells and provides support?
Cell wall.
Multiple Choice: Which organelle is responsible for lipid synthesis? A) Ribosome B) Golgi apparatus C) Smooth ER D) Mitochondria
C) Smooth ER.
