cell structure Flashcards

(44 cards)

1
Q

examples of Eukaryotes

A

plant and animal cells

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2
Q

example of a prokaryotes

A

bacteria cells

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3
Q

The _________ contains the cell’s genetic material (in the form of DNA), and so controls the cell’s activities.

A

nucleus

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4
Q

The ______ are where proteins are made. We sometimes call them the site of protein synthesis.

A

ribosomes

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5
Q

What is ‘cytoplasm’?

A

A jelly-like material containing nutrients and salts, where chemical reactions take place

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6
Q

What are the three main types of cells?

A

Animal cells, plant cells, and bacterial cells.

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7
Q

Name the structures found in both animal and plant cells.

A

Nucleus, cytoplasm, and cell membrane, mitochondria

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8
Q

Name the structures found only in plant cells.

A

cell wall, vacuole, chloroplasts

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9
Q

What do plant cells have that help them keep their shape?

A

A cell wall and a large vacuole.

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10
Q

What is the main difference between bacterial cells and animal/plant cells?

A

Bacterial cells do not have a nucleus.

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11
Q

What is the DNA like in a bacterial cell?

A

It’s a single circular strand in the cytoplasm (not in a nucleus).

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12
Q

What are eukaryotic cells?

A

Cells that have a nucleus and other membrane-bound organelles.

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13
Q

Which organisms have eukaryotic cells?

A

Animals, plants, fungi,

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14
Q

What are prokaryotic cells?

A

Cells that do not have a nucleus or membrane-bound organelles.

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15
Q

Which type of cell are bacteria?

A

Prokaryotic

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16
Q

How do prokaryotic cells differ from eukaryotic cells in terms of genetic material?

A

Prokaryotic cells have free-floating DNA, while eukaryotic cells have DNA contained in a nucleus

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17
Q

skip

A
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18
Q

What are plasmids in bacterial cells?


A

small rings of DNA

19
Q

What are the main components of a bacterial cell?

A

-Single Circular Strand of DNA
-Cytoplasm
-Cell Membrane
-Cell Wall
Plasmid

20
Q

What are the characteristics of bacterial cells?

A

-Prokaryotic and unicellular
-Have a cell membrane, cell wall, ribosomes, and cytoplasm
-NO mitochondria and chloroplasts
-Genetic material is a single circular strand of DNA (nucleoid)

21
Q

What is the genetic material in bacterial cells called?

22
Q

What structures do some bacteria have for movement?

23
Q

How do flagella help bacteria?


A

They allow bacteria to move around by rotating

24
Q

What is the function of the nucleus in an animal cell/plant cell?

A

contains genetic material that controls the activities of the cell

25
What is the function of the cell membrane in an animal cell/plant cell?
controls what enters and exits the cell
26
Where does respiration take place in an animal cell/plant cell?
in the mitchondria
27
What is the function of ribosomes in an animal cell/plant cell?
Ribosomes are where proteins are made
28
What are the main components of an animal cell?
-Nucleus -Cytoplasm -Cell Membrane -Mitochondria -Ribosomes
29
What is the function of the cell wall in plant cells?
made of cellulose to support and strengthen cells
30
What does the vacuole in plant cells contain?
cell sap and helps separate waste products
31
What is the role of chloroplasts in plant cells?
where photosynthesis occurs to make food for the plant
32
What are the main components of a plant cell?
-Nucleus -Cytoplasm -Cell Membrane -Mitochondria -Ribosomes -Cell Wall -Vacuole -Chloroplast
33
What is cytoplasm and what occurs within it?

a gel-like substance where chemical reactions take place
34
What is the function mitochondria?
the site of aerobic respiration, so they release energy for the cell
35
What are the additional structures found in plant cells that are not in animal cells?
Rigid cell wall (made of cellulose) Permanent vacuole (contains cell sap) Chloroplasts (site of photosynthesis)
36
What is the role of the cell wall in plant cells?
It provides support and structure to the cell
37
What does the permanent vacuole contain?
Cell sap, which is a mixture of sugars, salts, and water
38
What green substance do chloroplasts contain?
chlorophyll
39
Why do plants' leaves appear green?
Because of the chlorophyll in chloroplasts
40
True or false? Bacteria have both a cell membrane and a cell wall.
true
41
are bacteria cells unicellular or multicellular
unicellular
42
what is a cell
the smallest unit of life that can live on its own. Cells make up all living organisms and their tissues
43
what is the role of a vacuole
it supports the cell, maintaining its shape
44
what are the roles of plasmids
they contain 'extra genes' that are sometimes useful to the bacteria, such as antibiotic resistance