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WorksheetsDP Topic 1.1 / 1.2
Total questions: 16
Worksheet time: 26mins
The diagram above is a prokaryote Escherichia Coli. State the function of the structures labelled A and B. [2]
The electron micrograph shows a section through a cell.
State the function of the part labelled Y.
The two images are microscopic views of similar cells.
What is a reason for the differences between the two micrographs? (upper and lower micrographs)
The electron micrograph shows the structures in an exocrine gland cell of the pancreas.
Identify the organelles labelled I and II on the electron micrograph and state their principal role. [4]
The image is an electron micrograph.
Determine, with a reason, whether the image is of a prokaryotic cell or eukaryotic cell.
The electron micrograph shows a palisade mesophyll cell. State the name of the structure labelled III.
(a)
What steps should a student follow to calculate the actual size of each bacterial cell?
Step 1: Calculate the magnification by measuring the scale bar image ÷ actual size
Step 2: Measure image of bacterial cell ÷ magnification
Step 1: Calculate the magnification by measuring the scale bar image x actual size
Step 2: Measure image of bacterial cell ÷ magnification
Step 1: Measure the image of the bacterial cell
Step 2: Divide the image size by the scale bar size
He can't, it is impossible to calculate
Which functions of life are carried out by all unicellular organisms?
Response, homeostasis, metabolism and growth
Response, homeostasis, growth and photosynthesis
Metabolism, photosynthesis, reproduction and nutrition
Reproduction, ventilation, response and nutrition
Which characteristic of stem cells makes them useful for treating Stargardt’s disease?
They divide by binary fission so provide sufficient cells.
They are readily available from especially created embryos.
They can differentiate into retinal cells.
They transport white blood cells to the eyes.
Which graph represents the change in cell surface area to volume ratio with increasing cell diameter?
(a)
Which sequence has the cells arranged according to their ability to differentiate, starting from the least able?
umbilical, embryonic, bone marrow, neuron
embryonic, umbilical, bone marrow, neuron
neuron, bone marrow, umbilical, embryonic
bone marrow, neuron, embryonic, umbilical
What feature of both striated muscle and aseptate fungal hyphae is different from typical cell structure?
They have a cell wall that is not made of cellulose.
They have an absence of cholesterol in the plasma membrane.
They have multiple nuclei within a structural unit.
They have plasmids.
The image is a transmission electron micrograph of part of two adjacent pancreatic cells.
Identify the structure labelled A
(a)
Which organelle provides evidence that eukaryotic cells originated when large prokaryotes engulfed small free-living prokaryotes?
vacuole
chloroplast
80S ribosome
nucleoid
What is/are the function/s of the plant cell wall?
A. Formation of vesicles for transport of large molecules
B. Prevention of excessive water uptake
C. Communication with other cells by means of glycoproteins
D. Active transport of ions
B only
A and C only
C and D only
A, B and C only
Where could genes be located in a prokaryotic cell?
ribosomes and nucleoid
nucleoid and plasmids
plasmids and ribosomes
nucleoid, plasmids and ribosomes
