Topic 1 cells Flashcards
What is protease
This enzyme breaks down protein into amino acids
What is carbohydrase
This enzyme breaks down carbohydrates molecules into glucose
What are stem cells?
Unspecialised cells that can change into any cells for repair
What are proteins
composed of different amino acids linked together to form a chain
What is the active site
This is the piece of the enzyme that joins to whatever the enzyme is working on
What are enzymes
They are Proteins , which catalyse the rate of chemical reactions
What is the role or the nucleus
Controls the cell, and contains genes and chromosomes
What is the Cytoplasm
Where the chemical reactions take place
How does yeast reproduce
Asexually by budding
State the function of the chloroplast
To attract sunlight
What does the cell membrane do
Controls the movement of substances in and out of a well
What happens to enzymes at a too high temperature
They are denatured
Why are some people against embryonic stem cells
Because they think this is stopping that embryo from becoming life and it is unethical
What is meant by the term product
The result of a reaction
Name the type of enzyme that digests stains containing fats
Lipases
Why is meiosis important in the production of gametes
Produces half the amount of chromosomes
Gives rise to variation
How does a bacterial cell reproduce?
By dividing into two
Which is larger? Bacterial or yeast cell
Yeast is larger
What is cell theory
The cell is the basic unit of life, it grew from a parent cells which had heritable characteristics
What are enzymes
Proteins which catalyse chemical reactions
What are the names of the four bases found in DNA
ATGC
What does DNA stand for
Deoxyribose nucleic acid
What are the four bases names
Adenine
Cytosine
Guanine
Thymine
What is the triplet code
A sequence of three bases along the DNA chain which codes for an amino acid
