A Cytologist Is Examining a Tissue Under an Electron Microscope

question 12

Multiple Choice

A cytologist is examining a tissue under an electron microscope.He notices that the endoplasmic reticulum of each cell is extremely rough in appearance and he knows that the rough appearance is because of the ribosomes embedded there.He asks why there are so many ribosomes.You respond,

• A)"This tissue exports lipids and is very involved with mRNA production."
• B)"This tissue exports proteins to other areas of the body."
• C)"This tissue exports various nucleic acids,hence the large number of ribosomes present on the endoplasmic reticulum in each of those cells."

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Definitions:

Semantic Network

A conceptual structure used in cognitive psychology and artificial intelligence which represents semantic relations between concepts in a network.

Nodes

Points in a network or system where lines or pathways intersect or branch.

Clustering Hierarchy

A method of organizing elements into nested groups based on similarity or distance.

Flashbulb Memories

Highly detailed, exceptionally vivid 'snapshot' of the moment and circumstances in which a piece of surprising and consequential (or emotionally arousing) news was heard.