Cells Flashcards

(46 cards)

1
Q

What does Prokaryotic mean?

A

Before the nucleus

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2
Q

What is older, prokaryotic or Eukaryotic

A

Prokaryotic, the first life to evolve

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3
Q

What are Pili?

A

Small hairs on the outside of a prokaryotic cell, help it stick to surfaces and substrates.

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4
Q

What allows a prokaryotic cell to move?

A

The flagellum or flagella, tail like appendage that moves

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5
Q

What replaces the nucleus in a prokaryotic cell?

A

The Genophone, the single chromosome. Circle.

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6
Q

What is the capsule in a prokaryotic cell made off?

A

Polysaccharide

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7
Q

What are the two types of Prokaryotic cells?

A

Archaea
Bacteria

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8
Q

What are the subcategories of Archaea?

A

Methogens
Halophiles
Thermophiles

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9
Q

Where can you find Methogens?

A

Found in bogs, deepsols, marine and freshwater sediments, intestinal tracks and in sewerage treatment plants.
They’re anaerobic, meaning they don’t use oxygen.

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10
Q

What do Methogens use as Energy?

A

Use Hydrogen to produce Methane (CH4)

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11
Q

Where are Halophiles found?

A

Found in high salt areas, such as salt lakes
All aerobic

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12
Q

What do Halophiles have instead of chloroplast?

A

Red pigment called Bacteriorhodopsin, makes energy without needing oxygen.

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13
Q

What turns Flamingo’s pink?

A

The bacteriorhodopsin on brine shrimp.

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14
Q

Where do you find Thermophiles?

A

In high temperature and high sulphur areas, such as deep sea vents and volcanic areas.

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15
Q

What are the primary producers of energy into the deep sea?

A

Thermophiles

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16
Q

What is a chemoautotroph?

A

Something that feeds itself with chemicals. Such as Thermophiles feeding themselves with Sulphur.

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17
Q

What are 5 different groups of bacteria?

A

Coccus
Bacillus
Vibrio
Spirillim
Spirochete
Green bacteria
Purple bacteria
Cyanobacteria

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18
Q

What colour does gram positive bacteria become?

A

Purple

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19
Q

What does gram positive mean?

A

Contains lots of peptidoglycan, goes purple in the presence of gram strain, has thick walls.

20
Q

What does it mean when a bacteria encounters a gram strain and turns Pink?

A

Gram negative, has a thin wall, some peptidoglycan, lots of lipopolysaccharide.

21
Q

Which is pink, gram positive or gram negative?

A

Gram negative

22
Q

What is the current name for blue green algae?

A

Cyanobacteria

23
Q

What is the blue pigment in cyanobacteria called?

24
Q

Why is mass Cyanobacteria dangerous?

A

Some produce toxins and when they multiply rapidly, they can poison waterways.
Can cause putridification in mass dying.

25
Where is Nitrofixing bacteria found?
Soil
26
Is Nitrofixing bacteria aerobic or anaerobic?
Can be both
27
Explain the symbiotic relationship between Nitrofixing bacteria and plants?
The bacteria live on roots, takes nitrogen form atmosphere and turns it into ammonium for the plants.
28
What does the Endomembrane system include?
Cell membrane, nuclear membrane, the endoplasmic reticulum, the Golgi apparatus, lysomes, and other vesicles and vacuoles.
29
What does the tuple of biochemical process that occurs depend on?
The nature of the internal membrane Arrangement of the internal membrane Presence of specific enzymes Environmental factors.
30
Enzymes are found where?
On membranes, including cell membranes.
31
How old are the oldest found fossils of eukaryotic cells?
2.1 billion years old.
32
When did the common ancestor of multicellular eukaryotes live on earth
1.5 billion years ago.
33
What organelle is responsible for cellular respiration?
Mitochondria
34
What organelle is responsible for photosynthesis
Chloroplasts
35
What organelle is responsible for the breakdown of macromolecules and recycling of organic materials in the cell?
Lysosomes
36
What organelle is responsible for the metabolism of carbohydrates and detoxification of drugs and poisons
Smooth endoplasmic reticulum
37
What organelle is responsible for the production of proteins?
Rough endoplasmic reticulum and ribosomes
38
What is Endosymbiont Theory?
Proposes that mitochondria, chloroplasts, and other plastids, were once small prokaryotes that were engulfed by larger cells and, as either undigested prey or as a parasite, loved on a symbiotic relationship with its host and eventually became inseperable.
39
What is the theory that plastids were once small prokaryotes that were engulfed by larger cells and, as either undigested prey or parasites, lived in a symbiotic relationship with its host
Endosymbiont Theory
40
Where is DNA found in a eukaryotic cell?
Largely found in the nucleus, but also in mitochondria and chloroplasts. The two serve like chromosomes to the cell.
41
What is the job of Chloroplasts?
Photosynthesis
42
What is the job of mitochondria?
Cellular respiration.
43
What are the jobs of lysosomes and hydrolytic enzymes?
Break down macromolecules and recycle cell organic materials.
44
What is the job of smooth endoplasmic reticulum?
Synthesis of lipids, metabolism of carbs, detox of drugs and poisons.
45
What is the job of rough endoplasmic reticulum
Production of proteins.
46
What are prokaryotes classified and then subdivided as?
Classified and Monera, Subdivided into Schizophyta/bacteria and Cyanobacteria.