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WorksheetsIBDP Biology - Topic 1.1-1.2
Total questions: 10
Worksheet time: 15mins
Which living structure is an exception to the cell theory?
Striated muscle fibres
A single-celled alga carrying out all of the functions of life
The artificial synthesis of the organic molecule urea
A multicellular organism with cells undertaking specialized roles
What function is performed by the part of the cell shown in the electron micrograph?
Locomotion
Synthesis of proteins
Movement of chromosomes
Breakdown of cellular organelles
Which sequence has the cells arranged according to their ability to differentiate, starting from the least able?
bone marrow, neuron, embryonic, umbilical
neuron, bone marrow, umbilical, embryonic
umbilical, embryonic, bone marrow, neuron
embryonic, umbilical, bone marrow, neuron
Stargardt’s disease, a genetic disorder that causes vision loss, is being treated using retinal cells derived from human embryonic stem cells. Why are embryonic stem cells used?
They are already specialized for this function.
They are able to differentiate into the required cell type.
They retain stem cell properties after specialization.
There are no ethical issues concerning their use.
Which graph represents the change in cell surface area to volume ratio with increasing cell diameter?
A
B
C
D
The images are microscopic views of two similar cells. What is a reason for the differences between the two micrographs?
The lower image has a higher magnification.
A nucleus can only be seen in the upper image.
The lower image has greater resolution.
The upper image is an electron micrograph.
In mammals, mature red blood cells are specialized in that they lack nuclei, mitochondria or ribosomes. Which statement applies to red blood cells?
No chemical reactions take place within their cytoplasm.
They cannot produce new enzymes.
Materials cannot enter red blood cells.
Materials cannot exit red blood cells.
The image shows an electron micrograph of part of a cell. Which features do the two structures labelled X and Y have in common?
They are surrounded by a double membrane.
They contain 70S ribosomes.
They contain naked DNA.
They are only found in leaf cells.
Which substance is used for structure in plants?
Amylopectin
Cellulose
Collagen
Starch
A cell has cytoplasm, a cell wall, naked DNA and ribosomes. Based on this information, what type of cell could this be?
A cell from a pine tree
A grasshopper cell
A human red blood cell
A bacterium
