9) Cells Flashcards
What is a cell? (in a living organism)
A basic unit of life.
Why do we need a microscope to see cells?
Cells are too small to be seen by the naked eye.
Name the parts (A, B, C) of an animal cell in the diagram.
A: cytoplasm
B: nucleus
C: cell membrane
State the 2 functions of the nucleus of a cell.
1) controls all activities in a cell
2) contain genes that store information to pass on from parents to children.
State the 2 functions of the cytoplasm of a cell.
1) the place where most cell activities take place
2) contains other parts of the cell, water and digested food substances
State the 2 functions of the cell membrane of a cell.
1) control substances going in and out of the cell
2) allows the cell to change its shape
In which part of the cell are genes located?
nucleus
What type of information does genes carry?
They carry the traits of a person.
Traits are also known as physical characterisics.
State one trait that can be passed down from parent to children.
1) eye colour
2) earlobes attachment
3) hitchhiker’s thumb
4) hairline shape
5) dimples
The human body consist of ___________ that work together.
systems
Name 1 system in the human body.
1) respiratory system
2) circulatory system
3) nervous system
4) digestive system
5) reproductive system
Complete level of organization in the human body system.
system —> __________ —–> ____________ —–> ____________
system —> organ —–> tissue—–> cell
What is an organ made up of?
An organ is made up of various tissues that work together to carry out the function of the organ.
What is a tissue?
A tissue comprises of cells that have similar functions.
What is the function of the muscle cells?
They use oxygen to release energy to allow us to move.
