Cell Structure 2.1

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What is the structure of the nucleus?
Double membrane bound envelope with nuclear pores. Contains RNA. Outer membrane is connected to RER.
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Describe the function of the nucleus.
Controls all cellular function, holds RNA for protein synthesis, transmits genetic information.
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Compare and contrast the structure differences between RER&SER.
Both are squashed membrane sacs with fluid filled cisternae. RER is coated with ribosomes whereas SER contains enzymes.
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What is the role of the golgi?
To receive proteins and modify them, package into vesicles .
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Name the membranes in a chloroplast.
Thylakoids - Membrane stacks, Granum- Stack of thylakoids. Stroma - Fluid filled matrix.
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Describe how the mitochondria's structure aids with its function.
High surface area for respiration in the highly folded cristae. They are self replicating so can meet the cells energy needs.
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Where are you most likely to find lysosomes and why?
In phagocytic cells, because they contain digestive enzymes to destroy foreign material and dead organelles.
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Compare and contrast cilia and flagella of a eukaryotic cell
Both have 9+2 microtubules structure, cilia waft to keep airways clean ad flagella aid with movement.
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Describe the structure and function of centrioles.
Two bundles of microtubules, made of protein subunits. They aid with cell division by forming a spindle to pull apart the chromosomes.
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Which organelles are involved in protein synthesis?
Nucleus, RER, Golgi
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What are the three structures that make up the cytoskeleton?
Microfilaments, Intermediate filaments, Microtubules.
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How does the cell have strength and maintain shape?
Microfilaments give mechanical strength, microtubules give shape and support.
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Give three similarities between prokaryotic and eukaryotic cells
Plasma membrane, cytoplasm, ribosomes, DNA, RNA.
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Give three differences between prokaryotic and eukaryotic cells.
Much smaller, less developed cytoskeleton, no nucleus, no membrane bound organelles, smaller ribosomes, peptidoglycan wall, naked DNA, pill, flagella, plasmids.
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How do prokaryotic cells reproduce?
Binary fission. DNA is copied so both cells have a copy before division.
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Other cards in this set

Card 2

Front

Describe the function of the nucleus.

Back

Controls all cellular function, holds RNA for protein synthesis, transmits genetic information.

Card 3

Front

Compare and contrast the structure differences between RER&SER.

Back

Preview of the front of card 3

Card 4

Front

What is the role of the golgi?

Back

Preview of the front of card 4

Card 5

Front

Name the membranes in a chloroplast.

Back

Preview of the front of card 5
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