The cell is the smallest unit of life, performing all the functions needed to survive, including reproduction. Ultimately, cells make us human. So, today let’s look at some of the cell’s basic structures.
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Question of
Are the thinnest of the cytoskeletal filaments; composed of actin.
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Microfilaments
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Vacuole
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Organelle
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Microtubule
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Microfilaments are the thinnest of the three types of protein-based filaments in the cytoskeleton; composed of actin subunits that support muscle contraction and provide structural support to cells.
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Question of
A small region of the nucleus that functions in ribosome synthesis.
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Nucleolus
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Ribosomes
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Carbohydrate
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Golgi apparatus
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The nucleolus is a small region of the nucleus that functions in ribosome synthesis.
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Question of
Comprise materials that are to be excreted from the cell.
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Secretory vesicles
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Cytoskeleton
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Microfilaments
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Centrosome
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Secretory vesicles contain excretory materials intended for excretion. Cells excrete materials for a variety of reasons. This includes disposing of waste.
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Question of
An organelle bound by membranes that is native to the Golgi apparatus and contains digestive enzymes.
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Lysosomes
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Organelle
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Centrosome
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Mitochondria
Correct Wrong
From the Golgi apparatus, lysosomes are membrane-bound cellular organelles that contain digestive enzymes.
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Question of
A fatty, waxy, or oily compound soluble in organic solvents but insoluble in water.
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Lipids
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Secretory vesicles
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Cytoskeleton
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Golgi apparatus
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Whenever we think of lipids, we think of fatty, waxy, or oily compounds. Lipids are organic solvent-soluble but insoluble in polar solvents such as water. Triglycerides (fats and oils), phospholipids, waxes, and steroids are lipids. Among their functions are storing energy, sending signals, and acting as structural components of cell membranes.
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Question of
Cytoskeletal filaments act as cables within cells.
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Intermediate filaments
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Cell membrane
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Microtubule
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Peroxisome
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The intermediate filaments comprise a diverse group of cytoskeletal filaments that act as cables within the cell. Intermediate tubules have a diameter of 10 nm, which is thicker than actin but thinner than microtubules.
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Question of
The cellular structure consists of two centrioles that organize microtubules during cell division.
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Centrosome
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Organelle
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Cytoskeleton
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Vacuole
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The centrosome duplicates before cell division, and then, upon division, the two centrosomes move to opposite ends of the cell. A spindle of microtubules forms between the two centrosomes, which helps separate the replicated chromosomes into daughter cells.
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Question of
Fibrous proteins that support cells structurally.
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Cytoskeleton
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Cytoplasm
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Vacuole
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Microfilaments
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Among its many functions, the cytoskeleton provides structural support for cells. The cytoskeletal components are also involved in cellular motility, reproduction, and transport of materials.
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Question of
Membrane-bound organelles containing enzymes required for detoxification and lipid metabolism.
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Peroxisome
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Nucleus
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Secretory vesicles
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Microfilaments
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The peroxisome is an organelle found in virtually every eukaryotic cell. The peroxisome is responsible for breaking down very long-chain fatty acids by beta-oxidation.
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Question of
Polymers of tubulin that form part of the cytoskeleton and provide structure and shape to eukaryotic cells.
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Microtubule
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Nucleus
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Lysosomes
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Secretory vesicles
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The cytoskeletal filament system in eukaryotic cells consists of microtubules. The microtubule cytoskeleton is responsible for transporting material within cells, which is carried out by motor proteins located on the surface of microtubules.
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Question of
Building blocks of body tissue that also serve as fuel.
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Protein
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Ribosomes
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Endoplasmic reticulum
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Carbohydrate
Correct Wrong
Large, complex molecules, proteins play many vital roles in the body. They are important for the structure, function, and regulation of the body's tissues and organs and do most of their work inside of cells.
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Question of
Composed of a lipid bilayer, which surrounds all animal cells.
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Cell membrane
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Lipids
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Intermediate filaments
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Vacuole
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Cell membranes or plasma membranes protect the inside of a cell from the outside environment (extracellular space). It consists of a lipid bilayer interspersed with various molecules.
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Question of
Are sugar molecules.
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Carbohydrate
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Protein
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Lysosomes
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Lipids
Correct Wrong
Carbon, hydrogen, and oxygen atoms constitute carbohydrate molecules. Both simple and complex sugars are carbohydrates. Glucose and fructose are examples of simple sugars, while starch, glycogen, and cellulose are examples of complex sugars.
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