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Flashcards in Producing New Cells Deck (14):
0

What are chromosomes?

Thread-like structures, found in the cell nucleus, which carry genetic information

1

What is meant by the term chromosome complement?

It is the number of chromosomes found in the cells of an organism

2

What is the term to describe a cell containing two sets of chromosomes?

Diploid

3

What is mitosis?

It is the division of the nucleus that produces two genetically identical, diploid daughter cells

4

What is a replicated copy of a chromosome?

Chromatid

5

Where are the two identical chromatids held together on a chromosome?

Centromere

6

What is the equator of the cell?

It is where chromosomes line up during mitosis

7

What are spindle fibres?

Protein thread, produced during mitosis to pull chromatids apart

8

What is the method of growing cells in an artificial environment?

Cell culture

9

What is the term called for a solid or liquid nutrient jelly or broth used to culture cells?

Growth medium

10

What are aseptic techniques?

Laboratory procedures designed to maintain a sterile environment and prevent contamination of cell cultures

11

What is a fermenter?

Culture vessels, used in industry to grow cells on a large scale

12

What are some conditions required to grow cells in cultures?

~a suitable growth medium
~a supply of nutrients
~the availability of oxygen
~a suitable temperature and pH

13

What are some problems with fermenters as the number of microorganisms increase?

~the food is used up
~the temperature increases as the microorganisms respire
~oxygen levels decrease as microorganisms respire
~produces carbon dioxide so the pH changes
~as waste products build up the microorganisms begin to die