Cell Quiz- Study Flashcards

1
Q

What makes up all living things?

A

Cells

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2
Q

Cells

A

Basic unit of life

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3
Q

Robert Hooke

A

Discovered cells while observing a cork under a microscope

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4
Q

Anton van Leeuwenhoek

A

Pond water (living cells)

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5
Q

Robert Brown

A

Named the nucleus

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6
Q

Matthias Schleiden

A

Discovered all plants are made of cells

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7
Q

Theodor Schwann

A

Discovered all animals are made of cells

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8
Q

Rudolph Virchow

A

Discovered all cells come from other cells

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9
Q

Cell Theory

A
  1. All living things are composed of cells
  2. Cells are the basic units of structure and function for all living things
  3. New cells are produced from existing cells
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10
Q

What are the two types of cells?

A

Prokaryotic and Eukaryotic

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11
Q

Characteristics of Prokaryotes

A

Small and most primitive
Unicellular
All have cell walls and cell membranes

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12
Q

More characteristics of Prokaryotes

A

Contain DNA, ribosomes, and cytoplasm
No nucleus or membrane bound organelles
Have nucleoid and plasmid
Divide by binary fission

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13
Q

Example of a Prokaryotic cell

A

Bacteria

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14
Q

(Before Nucleus)

A

Prokaryotic

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15
Q

Characteristics of a Eukaryote

A

Have a true nucleus
Have membrane bound organelles
All have cell membranes
May have cell walls

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16
Q

More characteristics of Eukaryotes

A

Can be unicellular or multicellular
More evolved cells
Some have cilia

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17
Q

Examples of Eukaryotes

A

Plants, animals, fungi, protists (no bacteria)

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18
Q

Animal cells shapes

A

Can have all kinds of shapes

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19
Q

What do animal cells contain?

A

DNA, cytoplasm, ribosomes, cytoskeleton, cell apparatus, nucleus, nucleolus, and smooth & rough ER, centrioles, and lots of lysosomes

20
Q

What is the shape of a plant cell?

A

Usually body or square shaped

21
Q

What do plant cells contain?

A

DNA, cytoplasm, ribosomes, cytoskeleton, cell membrane, mitochondria, Golgi apparatus, nucleus, nucleolus, and smooth & rough ER
Contain cell walls
Chloroplasts, central vacuoles

22
Q

What are the differences of animal and plant cells?

A

Plants contain cell walls, chloroplasts, central vacuoles, while animal cells do not. Animal cells can be any kind of shape, while plant cells are usually a boxy shape. Animal cells also have centrioles and lots of lysosomes and plant cells do not.

23
Q

Cell membrane

A

Function: protects cells, controls what enters and leaves the body of the cell
Composed of: phospholipid bilayer, proteins, and carbohydrates

24
Q

Cytoskeleton

A

Network of proteins that form long threads or fibers that crisscross the cell

25
Microtubules (within the cytoskeleton)
Give cell shape and movement of organelles
26
Functions of Cytoskeleton
Form cilia and flagella in some cells Form spindle fibers during cell division Made up of protein actin
27
Intermediate filaments (within the cytoskeleton)
Cell strength
28
Microfilaments (within cytoskeleton)
Long thing filaments that enable cells to move and divide, help muscle cells contract and relax
29
Cytoplasm
Fills space between the nucleus and the cell membrane Fluid portion called cytosol and consist mostly of water Sure of chemical reactions and location of organelles
30
Nucleus
Storehouse of genetic info or DNA Composed of: DNA enclosed in a double membrane called nuclear envelope, has pores (holes) to allow large molecules to pass between nucleus and cytoplasm Contains nucleolus (where ribosomes are assembled)
31
Nuclear structure
Chromatin, Chromosomes, Nucleolus, nuclear envelope
32
Chromatin
Granular material within the nucleus consisting of DNA bound to proteins
33
Chromosomes
Condensed chromatin that forms during cell division- carries genetic info
34
Nucleolus
Small, dense regions where the assembly of ribosomes begin
35
Nuclear envelope
Double membrane layer that surrounds the nucleus
36
Ribosomes
Function: link amino acids together to form proteins (protein synthesis), made up of proteins and RNA Some ribosomes are found to the Rough ER others in cytoplasm
37
ER
Interconnected network of thin folded membranes
38
Rough ER
Studded with ribosomes and responsible for protein assembly
39
Smooth ER
Responsible for lipid assembly, breaks down drugs and alcohol
40
Golgi apparatus
Function: process (attach carbs and lipids to proteins) sort and deliver proteins UPS of the cell
41
Vacuoles
(Like storage garage) Fluid filled sacs used for storage of water, food, ions and enzymes needed by the cell
42
Central Vacuole
Found ONLY in plants Takes up most space inside the cell to provide strength and support May also contain other substances (some toxic)
43
Vesicles
(Mini pod) Function: small membrane bound sacs that isolate some materials from the rest of the cytoplasm and transport them from place to place in the animal cell ONLY in animal cells
44
Mitochondria
Function: supply energy to the cell, also known as power house of the cell Responsible for cellular respiration Unique in that it contains its own DNA and ribosomes
45
Lysosomes
Enzymes used to defend the cell Break down damage or worn out cell parts (Cleanup crew)
46
Centrioles
Organized micro tubes to form cilia and flagella (Used by cells for movement) Used in cell division for animals created spindles