Chap 3A Unit 1

Question 1

Cell Theory

Answer 1

All organisms are made of cells; all existing cells are produced by other living cells; the cell is the most basic unit of life.

Question 2

Cytoplasm

Answer 2

A jellylike substance that contains dissolved molecular building blocks- such as proteins, nucleic acids, mineral and ions

Question 3

Organelle

Answer 3

are structures specialized to perform distinct processes (job function) within the cell

Question 4

Prokaryotic cell

Answer 4

Do not have a nucleus or other membrane-bound organelle; DNA in the cytoplasm

Question 5

Eukaryotic Cell

Answer 5

Have nucleus and other membrane-bound organelles; Nucleus is the largest organelle in cell

Question 6

Robert Hooke

Answer 6

(1665) First to id cells; looked at dead tree cells, He used the three-lens compound microscope to examine thin slices of cork.

Question 7

Anton van Leeuwenhoek

Answer 7

(1674) Created a stronger lense for better viewing of the cell, first to view living cells; analyzed human teeth plaque bacteria

Question 8

Matthew Scheiden

Answer 8

(1838) First to note plants for made of cells

Question 9

Theodore Schwann

Answer 9

(1839) all living things are made up of cells; He was struck by the structural similarities between plant cells and the animal cells he had been studying.

Question 10

Robert Virchow

Answer 10

(1855) All cells come from other living cells

Question 11

Compound Microscope

Answer 11

A compound microscope contains two or more lenses. Total magnification, the product of the magnifying power of each individual lens, is generally much more
powerful with a compound microscope than with a single lens.

Question 12

Cell Membrane

Answer 12

Controls the movement of materials into and out of the cell; Acts like a boarder wall

Question 13

Ribosomes

Answer 13

Molecules where proteins are assembled; cellular machinery responsible for making proteins