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Biology > Chapter 6: Cells > Flashcards

Chapter 6: Cells Flashcards

1
Q

Semi-permeable membrane

A

Allows some molecules freely in and out and others to enter

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2
Q

Cytoplasm

A

A medium where chemical reactions can occur

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3
Q

Nucleus

A

Controls the cells activities

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4
Q

Cell membrane

A

Controls what enters and exits the cell
Made up of phospholipids and protein in constant motion
Phosphate - water loving - hydrophilic
Lipids - water hating - hydrophobic

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5
Q

Nuclear pore

A

Allows RNA to enter and exit the nucleus

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6
Q

Chromatin/DNA

A

Contains genetic information of the cell

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7
Q

Ribosomes

A

Made from RNA, located in the cytoplasm

Needed for protein-synthesis

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8
Q

Mitochondria

A

Site of cellular respiration, producing energy

They have their own DNA and can replicate themselves

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9
Q

Vacuole

A

Store cell sap, cell water, sugars, salt and pigments

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10
Q

Cell wall

A

Shape, structure and support to the plant

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11
Q

Chloroplasts

A

Site of photosynthesis
Have their own DNA and replicates by themselves
Eukaryotic

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12
Q

Prokaryotic cells

A

Cells that do not have organelles surrounded by membranes and do not have a true nucleus .eg, bacteria

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13
Q

Eukaryotic cells

A

Cells that have a membrane-bound organelles and a true nucleus.eg, plants animals and fungi

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14
Q

Phosphate

A

Hydrophilic

Water-loving

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15
Q

Lipids

A

Hydrophobic

Water-hating

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16
Q

Cell membranes are made up of

A

Phospholipids and proteins

In constant motion

17
Q

Nucleus is made up of

A

A double membrane with numerous nuclear pores

Contains RNA, DNA and proteins

18
Q

Light microscopes

A

Magnified light focused on the specimen

19
Q

Electron microscopes

A

A beam of electron reflected off the specimen and magnified

20
Q

Transmission electron microscopes

A

A beam of electron sent through a thin section of the specimen
Internal structure of the specimen in great detail

21
Q

Scanning electron microscope

A

A beam of electrons provide a surface view of the electrons

22
Q

Compound microscope

A

Use two to lenses to magnify the image

23
Q

Simple microscope

A

Uses one lens to magnify the image

Biology (38 decks)

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