Ch6 Cells and their Structures

Question 1

Smallest unit of life

Answer 1

Cells

Question 2

Magnification (microscope)

Answer 2

RATIO between size of image on microscope, and size in real life

Question 3

Resolution (microscope)

Answer 3

Ability to observe 2 adjacent objects as distinct from each other

Question 4

Contrast (microscope)

Answer 4

how different one structure looks compared to another

Question 5

Transmission Electron Microscope (TEM)

Answer 5

• Beam of electrons THROUGH sample

- Some electrons are scattered while others pass thru and form image

Question 6

Scanning Electron Microscope

Answer 6

Beam scans surface making 3D image

Question 7

Prokaryotic cells lack…

Answer 7

Membrane bound nucleus

Question 8

2 types of prokaryotes

Answer 8

1. Bacteria

2. Archaea

Question 9

Metabolism

Answer 9

Sum of all chemical reactions by cells

Question 10

Catabolism

Answer 10

Molecules broken down to smaller components

Question 11

Anabolism

Answer 11

Synthesis of molecules / macromolecules

Question 12

TRANSLATION

Answer 12

• POLYPEPTIDE SYNTHESIS

Question 13

Ribosome

Answer 13

site of polypeptide synthesis (rRNA + Protein)

Question 14

tRNA

Answer 14

brings amino acids

Question 15

mRNA

Answer 15

info. to make a polypeptide

Question 16

Cytoskeleton protein filaments (x3)

Answer 16

1. Microtubules
2. Intermediate Filaments (myosin)
3. Actin Filaments ( microfilaments)

Question 17

Nuclear Envelope

Answer 17

• Double membrane enclosing nucleus

Question 18

Chromosomes

Answer 18

DNA + Protein = Chromatin

Question 19

Lysosomes

Answer 19

digestive Enzymes (recycling center