Magnification And Cells Flashcards
How do you work out size of a real object?
Image size/ magnification
How do you calculate the image size?
Magnification x size of real object
How do you calculate the magnification on an object
Image size/ size of real object
What do all animal cells have?
Nucleus Cytoplasm Cell membrane Mitochondria Ribosomes
What do all plant cells have?
Cellulose Cell wall Cell membrane Ribosomes Mitochondria Cytoplasm Permanent vacuole Chloroplasts nucleus
What is a eukaryotic cell
Eukaryotic cells all have a membrane, cytoplasm, and genetic material enclosed in a nucleus
E.g. fungi
What is a prokaryotic cell
Prokaryotic cells consist of a cytoplasm and a cell membrane surrounded by a cell wall. E.g. bacteria cells
What are the small rings of DNA in a prokaryotic cell
Plasmids
Name two adaptations of a nerve cell
Lots of sentries to make connections to other nerve cells
A long axon to carry impulses from one place to another
list two Adaptations of sperm cells
A long tail
The middle section is full of mitochondria to transfer energy in order for the tail to move
Give two examples of specialised cells in animals
Nerve cells
Muscle cells
Sperm cells
Give two examples of specialised plant cells
Root hair cells
Photosynthetic cells
Xylem cells
Phloem cells
What is phloem cells
Phloem is the specialised transport tissue that carries the food made my photosynthesis
What are xylem cells
Xylem is the transport tissue in plants the carries water and minerals from the roots the leaves and shoots
What happens during mitosis
A cell splits and the genetic material doubles. It then divides into two identical nuclei
