Cell Bio Lecture 1 Material

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What is the fundamental unit of life?

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1

What is the fundamental unit of life?

Cells

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2

What are the characteristics of life?

Homeostasis, reproduction, metabolism, DNA/hereditary, Cells

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3

When did life originate?

3 billion years ago

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4

Who came up with the cell theory?

Schleiden and Schwann

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5

What does the cell theory state?

That organisms are made of cells, new cells come from pre-existing cells, cells are the structural and functional unit of all living things, and that cell dysfunction produces disease

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6

What evidence supporting the cell theory came from Louis Pasteur?

Broth experiment with bacteria and microbes

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7

What is the central dogma theory?

DNA replication → Transcription → Translation

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8

All cells use the same ___ amino acids?

20

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9

Cells are _____________ that self-replicate?

Catalytic machines

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10

What are the characteristics of prokaryotes?

Lack of a nucleus, lack of a mitochondria, unicellular, no membrane bound organelles

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11

What are the characteristics of eukaryotes?

Presence of a nucleus, mitochondria, multi-cellular, membrane bound organelle

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12

What are the major divisions of prokaryotic organisms?

Bacteria and Archaea

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13

What are the major divisions of eukaryotic organisms?

Protozoa, Fungi, Plantae, Animal

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14

What is the endosymbiotic hypothesis?

Some eukaryotic cell organelles, such as mitochondria and plastids, evolved from free-living prokaryotes

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15

What are the common features between mitochondria and chloroplasts?

Have their own DNA, double membrane, ATP synthase, electron transport chain.

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16

All life on Earth has descended from a _________?

Common ancestor

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17

What is saccharomyces cerevisiae?

Brewer’s Yeast

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18

What is Schizosaccharaomyces pombe?

Fission Yeast

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19

What is arabidopsis?

A small weed, with a compact genome

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20

Who first used Drosophila melanogaster?

Thomas Hunt Morgan

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21

What is caenorhabditis elegans?

A soil nematode

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22

What was C. elegans used to help determine?

Genes controlling programmed cell death

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23

How many genes do humans have?

19,000

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