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WorksheetsCHAPTER 3 - CELLS
Total questions: 91
Worksheet time: 54mins
An adult human body consists of how many cells?
65 million cells
70 million cells
75 million cells
What are the main structures of cells
Nucleus and cytoplasm
Nucleus, cytoplasmic organelles and cell membrane
Nucleus, cytoplasm, cytoplasmic organelles and cell membrane
The outer most limit of the cell
Cell membrane
Nucleus
Cell wall
Nuclear envelope
TRUE OR FALSE: all cells have much in common but are distinctive in several ways
(a)
Controls entrance and exit of substances
Cell membrane
Ribosome
Lysosome
Nucleus
What is num 1
Microtubules
Flagellum
Chromatin
Ribosomes
Num 2
Micro-tubules
Chromatin
Flagellum
Basal body
What is # 3
Nucleolus
Nucleus
Chromatin
Chromosomes
What is 8
Cell membrane
Basal body
Nuclear envelope
Peroxisomes
The cell membrane is made up of a phospholipid bilayer that has a hydrophilic head (water loving heads) containing of (?) groups.
Phosphate
Fatty acids
Sodium
Carbohydrate
Hydrophobic tails of cell membranes are made up of (?)
Fatty acids
Sodium
Carbohydrates
Lipids
Components of the cell membrane
Cholesterol
Phospholipid
Integral proteins
Peripheral proteins
Carbohydrates
TRUE OR FALSE; molecules that are water soluble can move through the membrane
(a)
TRUE OR FALSE; Molecules that are soluble in lipids can not enter the cell membrane.
(a)
These proteins span the cell membrane and functions as receptor
(a)
These are proteins that span the membrane and allows the passage of certain molecules
(a)
These are proteins that do not span the membrane but functions as an enzyme or signak transducers
(a)
Cells are often connected to each other by (?)
Intercellular junctions
Gap junctions
Tight junctions
Occurs when cell membranes of adjacent cells are tightly fused.
Tight junctions
Desomosomes
Gap junctions
Forms small reinforced regions of cell membranes of cells
Desmosome
Gap junctions
Tight junctions
Connect the cell membrane of adjacent cells, but have channels to allow ions to move.
Gap junctions
Desmosomes
Tight junctions
These are molecules that guide cells on the move
(a)
Coats white blood cells and provides traction to aid white blood cells in reaching injury site.
Selectin
Integrin
Directs the white blood cells between the capillary cell wall
Integrin
Selectin
Networks of membrane and organelles are suspended in a clear gel called (?)
Cytosol
Cytoplasm
Cytoskeleton
It is the supportive framework made up of protein rods and tubules
Cytoskeleton
Cytoplasm
Cytosol
It is the tubular transport system that is incharge of the synthesis of proteins and lipids
Endoplasmic reticulum
Golgi apoaratus
Mitichondria
It is studded with ribosomes
Rough endoplasmic reticulum
cytosol
Smooth endoplasmic reticulum
Stacks of flat membranous sacs that is in the Golgi apparatus
Cisternae
Enzymes
Vesicle
Movements of substances with in cells by way of vesicles
Vesicle trafficking
Exocytosis
Endicytosis
What are the biosynthetic machinery?
(a)
It can be found on the endoolasmic reticulum and free in the cytoplasm
Ribosomes
Lysosomes
Peroxisomes
Provides structural support and enzymes necessary for protein synthesis
Lysosomes
Rybosomes
Lysosomes
Fluid filled sacs that cintain their own DNA and can devide on their own.
Mitochondria
Nucleus
Cytoplasm
The inner membrane of the mitochondria is folded into (?)
Cisternae
Mitochondrion
Intermembranous space
It controls the reaction of energy released from nutrients.
Mitichondria
Ribosomes
Lysosomes
These are tiny membranous sacs containing enzymes that break down proteins, carbohydrates and nucleic acids
Lysosomes
White blood cells
Peroxisomes
Centrosome
Membranous sacs found in cells but abundant in liver and kidneys
Lysosomes
Peroxisomes
Centrioles
Centrosomes
It is the byprodyct of of the breakdown of fatty acids and amino acids that could be dangerous to the cell. Wherein the enzymes in peroxisomes break it down to water and oxygen
Phospholipid
Nucleic acid
Hydrogen peroxide
Peroxidases
Dismantles worn cells and cell parts
Ribosomes
Lysosomes
Peroxisomes
Vesicles
A type of lysosome that digests bacteria with lysosomal enzymes
White blood cells
Enzymes
Red blood cells
Catalase
What are the biochemical reactions of peroxisomes?
Synthesis of bileducts
Break down of v long chain of fatty acids
Degradation of rare biochemicals
Detoxification of alcohol
Dismantling of worn cells
Located in the cytoplasm near the nucleus
Centrosome
Centrioles
Spindle fibers
Microtubules
It is pinched off from the golgi apparatus and move to the cell membrane. And then, its membrane will then fuse with the cell membrane of the cell and then its contents will be released out of the cell. What is "it"
Vesicles
Microtubules
Golgi apparatus
Endoplasmic reticulum
These are tiny rods of the protein actin and they function in cellular movements
Microfilaments
Microtubules
Cilia
Flagellum
These are tiny hairlike processes which attach just beneath the cell membrane to a basal body. It creates a wave like action.
Flagellum
Cilia
Microtubules
Microfilaments
Are long slender tubes composed of the protein tubulin. they form the cytoskeleton and help move organelles within the cell
Flagellum
Cilia
Microtubules
Microfilaments
These are much longer than a cilium and has a wavelike motion that allows a cell to swim
Nucleus
Flagellum
Cilia
Nuclear envelope
It is a large spherical structure and is enclosed in a double layered nuclear envelope, composed of an inner and outer lipid layer
Nucleus
Nucleoli
Mitochondria
Histones
It is the site or ribosome production
Nucleus
Mitochondria
Nucleolus
Lysosome
Composed of continuous dna molecules wrapped around 8 proteins called histones
Nucleoli
Chromatin fibers
Fibers
Chromosome
It is the tendency of atoms, molecules, and ions to move from areas of higher concentration to areas of low concentration.
Osmosis
Endocytosis
Exocytosis
Diffusion
It is the difference in concentration
(a)
It progresses until there is no net movement, diffusional equilibrium.
Diffusion
Filtration
Endocytosis
A process Wherein substances that are insoluble in lipids and too large to move through pores move by?
Endocytoses
Facilitated diffusion
The diffusion of water molecules from a region of high concentration to a region of lower watwr concentration across a selectively permeable membrane
Endocytosis
Exocytosis
Osmosis
Diffusion
This includes protein channels and protein carriers, wherein molecules fit into the carrier and are transported across the membrane
Osmosis
Endocytosis
Facilitated diffusion
TRUE OR FALSE; the greater the concentration of nonpermeable particles in a solution, the lower the water concebtration and the greater the osmotic pressure
(a)
This is a passive process since gravity can be an applied force
Filtration
Active transport
Sodium potassium pump
The movement of molecules from low concentration to high concentration and it requires ATP
Exocytisis
Endocytosis
Active transport
Uptake of material through the cell membrane by the formation of vesicles. It moves particles too large to move by diffusion or active transport.
Exocytosis
Endocytosis
Active transport
Intake of liquid droplets
Phagocytosis
Pinocytosis
Diffusiin
Is the intake of solids, often with fusion of lysosomes which digest the material.
Phagocytosis
Pinocytosis
Exocytosis
Moves specific kind of particles into the cell
Exocytosis
Phagocytosis
Receptor-mediated Endocytosis
Often expels the residue after lysosomal enzymes have digested solids brought in through phagocytosis
Exocytosis
Endocytosis
Transcytosis
Where the secretory vesicles accumulate materials for release from the cell
Transcytosis
Endocytosis
Exocytosis
Combines exocytosis and endocytosis. It is the selective and rapid transport of a substance or particle from one end of the cell to the other
Endocytosis
Exocytosis
Transcytosis
It enables substances to cross barriers formed by tightly connected cells
Cell cycle
Endocytosis
Exocytosis
Transcytosis
It is the series of changes that cell undergoes from the time it forms until it devides
Interphase
Cell cycle
Mitosis
Transcytosis
It is the period of cell growth and function
S phase
G1
G2
Interphase
Is the period of DNA synthesis as the cells prepare for cell division.
G1
S phase
G2
Karyokinesis
It is the first gap or growth phase. During this period cell growth occurs.
G1
G2
S phase
Cytokinesis
Second gap phase. During this period, the cell replicates organelles in preparation for cell division.
G1
Interphase
S phase
G2
Occurs in somatic cells except sex cells
Karyokinesis
Cytokinesis
Mitosis
TRUE OR FALSE: cell division results in 2 genetically identical cells with 23 chromosomes each.
(a)
________ is nuclear division
Cytokinesis
Karyonises
Mitosis
____________ division of the cytoplasm
Cytokinesis
Karyokinesis
Mitosis
Chromosomes condense from chromatin. And then centrioles move to the poles
Anaphase
Prophase
Metaphase
Telophase
Spindle fibers contract and the chromosomes move to the opposite poles
Telophase
Prophase
Anaphase
Metaphase
Spindle fibers attach to centromers and the chromosomes align in the center of the cell
Metaphase
Anaphase
Prophase
When does cytokinesis begin?
Metaphase
Mitosis
Telophase
Anaphase
Nuclear envelope reforms and chromosomes unwind into chromatin
Metaphase
Telophase
Prophase
Anaphase
The process by which different cells develop different structures and specialized function
(a)
When does cellular differentiation begin?
Before firtilization
During fertilization
First week after fertilization
How does cells appear to keep track of their divisions?
(a)
TRUE OR FALSE: During mitotic clock, DNA at the tips of chromosomes wear down as the cell divides and may be a signal for the cell to stop dividing.
(a)
This is when abnormal growth or neoplasm can produce a disorganized mass
Tumor
Cancer
It is a collection of disorders
(a)
Remain in place and grow, interfering with the function of healthy tissue
Benign tumors
Malignant
Cancer
Tumors are invasive and extend into sorrounding tissue
Malignant
Benign tumors
Cancer
It causes the growth of cancer cells
Benign tumors
Radiation
Oncogenes
Suppressor genes
