Cells Flashcards
(26 cards)
What is the basic unit of life?
The cell.
True or False: All living organisms are composed of cells.
True.
What structure surrounds and protects the cell?
The cell membrane.
Fill in the blank: The jelly-like substance inside the cell is called __________.
cytoplasm.
What organelle is known as the powerhouse of the cell?
Mitochondria.
Which organelle 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 life C) Cells can arise from non-cellular structures D) All cells come from pre-existing cells.
C) Cells can arise from non-cellular structures.
What is the function of the nucleus in a cell?
To store genetic material and control cell activities.
True or False: Prokaryotic cells do not contain a nucleus.
True.
What type of cell contains membrane-bound organelles?
Eukaryotic cells.
Fill in the blank: __________ are the structures responsible for photosynthesis in plant cells.
Chloroplasts.
What is the role of the endoplasmic reticulum (ER)?
To synthesize proteins and lipids.
Multiple Choice: Which type of ER is involved in lipid synthesis? A) Rough ER B) Smooth ER C) Golgi apparatus D) Ribosomes.
B) Smooth ER.
What is the function of the Golgi apparatus?
To modify, sort, and package proteins and lipids for secretion or delivery to other organelles.
True or False: Lysosomes contain enzymes that break down waste materials in the cell.
True.
What is the primary function of the cell membrane?
To regulate what enters and exits the cell.
Fill in the blank: The process by which cells divide is known as __________.
mitosis.
What is the function of the cytoskeleton?
To provide structural support and shape to the cell.
Multiple Choice: Which of the following cell types lacks a cell wall? A) Bacteria B) Animal cells C) Plant cells D) Fungi.
B) Animal cells.
True or False: Plant cells have chloroplasts, while animal cells do not.
True.
What is apoptosis?
The process of programmed cell death.
Fill in the blank: The __________ is the semi-permeable barrier that surrounds the cell.
cell membrane.
What are stem cells?
Undifferentiated cells that can develop into various cell types.
Multiple Choice: Which organelle is involved in detoxifying harmful substances? A) Mitochondria B) Peroxisomes C) Ribosomes D) Nucleus.
B) Peroxisomes.
