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Robert Hooke published his book Micrographia when he was still a young man. It contained illustrations of plant, animal, and non-living objects shown in a manner that had never been seen before. What scientific instrument allowed him to produce such amazing work?
Microscope
Printing press
Telescope
Sharp pencil
Changes in technology often allow for new scientific discoveries to be made. The electron microscope has changed the field of medicine by allowing scientists to view structures that were previously too tiny to see with a compound light microscope.
How much more detail can an electron microscope reveal as compared to a normal compound light microscope?
1000 times more detailed
10 times more detailed
100 times more detailed
twice as detailed
This is a diagram of a typical plant cell.
Organelle H in the diagram appears green in colour when viewed under a microscope. What is structure H, and what substance causes its green colour?
Organelle H is a chloroplast, and chlorophyll gives it a green colour
Organelle H is a ribosome, and thylakoid gives it a green colour
Organelle H is a thylakoid, and grana give it a green colour
Organelle H is a mitochondrion, and chloroplasts give it a green colour
This is a diagram of a typical plant cell.
Organelles B and C are responsible for the production of proteins and fats, respectively. What are organelles B and C?
Rough and smooth endoplasmic reticulum, respectively
Smooth and rough endoplasmic reticulum, respectively
Mitochondria and lysosomes, respectively
Lysosomes and mitochondria, respectively
This is a diagram of a typical plant cell.
Inside structure H there are special structures that look like tiny green coins. Which statement best describes these special structures?
These structures are called thylakoids, a stack of them is called a granum, and this is where photosynthesis occurs
One of these structures is called a granum, a stack of them is called a thylakoid, and this is where photosynthesis occurs
These structures are called thylakoids, a stack of them is called a granum, and this is where cellular respiration occurs
One of these structures is called a granum, a stack of them is called a thylakoid, and this is where cellular respiration occurs
Which statement comparing the differences between plant and animal cells is false?
Plant cells do not have mitochondria as animal cells do; instead, they use chloroplasts to create their energy
Plant cells contain chlorophyll, a pigment that is involved in photosynthesis; animal cells do not
Plant cells have a large central vacuole whereas animal cells tend to have many smaller vacuoles
Animal cells have centrioles, involved in cell division; plant cells do not
Which type of microscope, shown here, passes electrons through thin slices of cells and is capable of a magnification up to 1.5 million times?
TEM
SEM
Compound light
AFM
What is the ability to distinguish between two objects that are very close together called?
Resolution
Contrast
Magnification
Localization
Chlorophyll gives this leaf cell its green colour.
What does chlorophyll do?
Converts carbon dioxide and water into sugar and oxygen
Converts sugar and water into carbon dioxide and oxygen
Converts carbon dioxide and sugar into water and oxygen
Converts carbon dioxide and oxygen into sugar and water
Which statement about smooth endoplasmic reticulum is true?
Smooth endoplasmic reticulum is made of interconnected tubes
Smooth endoplasmic reticulum contains ribosomes
Smooth endoplasmic reticulum is associated with making proteins
Smooth endoplasmic reticulum modifies and sorts proteins
