Flashcards in Biology Paper 1 GCSE Exam Deck (254)
Which cells can you find a cell wall in?
Which cells can you find a cell membrane in?
Which cells can you find a nucleus in?
Which cells can you find a cytoplasm in?
Which cells can you find a Ribosomes in?
Which cells can you find a mitochondria in?
Which cells can you find a chloroplasts in?
Which cells can you find a vacuole in?
Which cells can you find a flagella?
Which cells can you find a Plasmid?
How do you calculate the magnification?
Image height / Object height
What is 1 micrometre in mm?
What is 1 nanometre in mm?
What is the advantage of a light microscope?
Easy to use and inexpensive
What are the advantages of a electron microscope?
Can see smaller thing and more detail. It also has a higher resolution and magnification
What is the resolution of an electron microscope?
What does magnification mean?
The act or process of enlarging the physical appearance or image of something.
What is a specialised cell?
A cell which is adapted to carry out a particular function
What happens when a cell differentiates?
It acquires different sub-cellular structures to enable it to carry out a certain function.
What are some examples of a specialised cell?
root hair cell
red blood cell
What is the function of a sperm cell and how is it adapted?
Head contains genetic information and an enzyme to help pentrate the egg cell membrane and fertilise the egg.
What is the function of a root hair cell and how is it adapted?
Has long fingers which gives it a large surface area which helps absorb water and mineral irons from the soil
What is the function of a ciliated cell and how is it adapted?
Has a tiny thin layer of tiny moving hairs called cilia which push and move mucus from one place to another
What process do cells use oxygen?
How does the mitochondria in a sperm help it to swim>
It releases energy so it can swim
Why does a bacterial cell not contain mitochondria?
There is not enough room in a bacterial cell
Why is a leaf cell specialised to carry out photosynthesis?
It has many chloroplasts
Put this in order of size from the smallest to the largest:
What are chromosomes made out of?
Small sections called genes