Topic 1 :cells - Key Words

Question 1

Magnification

Answer 1

The number of times greater the size of the image is than the actual size of the object

Question 2

Resolution

Answer 2

The minimum distance apart two objects can be in order for them to appear as two separate items

Question 3

Fractionation

Answer 3

The process of breaking apart cells and separating their contents (including organelles) by homogenization and ultracentrifugation

Question 4

Eukaryotic

Answer 4

A cell that contains a membrane -bound nucleus and other membrane bound organelles.

Question 5

Prokaryotic

Answer 5

A cell that does not contain a nucleus (or any membrane-bound organelles). Bacteria are prokaryotes.

Question 6

Virus

Answer 6

An acellular, non living particle. These contain DNA or RNA held within a capsid but can only multiply inside a living host cell

Question 7

Nucleus

Answer 7

An organelle in eukaryotes that contain DNA in the form of protein bound linear chromosomes (chromatin) and a nucleolus surrounded by a nuclear envelope.

Question 8

Differentiation

Answer 8

The process by which cells become specialised for different functions

Question 9

Interphase

Answer 9

A stage in the cell cycle when DNA replication occurs that takes place before mitosis (or meiosis).

Question 10

mitosis

Answer 10

A type of nuclear division in which two identical daughter cells are produced. Includes the stages prophase, metaphase anaphase and telophase