True/False
Fungi cells have chloroplasts
false, they cannot use photosynthesis so they do not have chloroplasts.
What is the function of the nucleus?
the control centre of the cell - contains DNA
plants get energy for photosynthesis from where?
the sun
Which body system includes the lungs?
Respiratory System
What gas to red blood cells carry?
oxygen
muscle cells cannot contract and extend
false, they must to this to help us move
What is the function of the cell membrane?
it protects and controls what enters and exits the cell
what do plants make from photosynthesis?
glucose and oxygen
What food type does amylase help digest?
Carbohydrates
Which side of the heart has a thicker wall and why?
Left side - particularly the left ventricle
Needs to be able to pump blood all around the body.
prokaryotic cells lack a true nucleus and membrane bound organelles
true
Which organelle is sometimes called 'the powerhouse of the cell' and why
Mitochondria - converts energy
why do cells need to do cellular respiration?
to make energy for cells to use (ATP)
Which body system removes excess salts and protein waste?
Excretory System
write the following from the smallest to largest.
cells, organ system, organs, organism, tissues
cells, tissues, organs, organ system, organism
Cartilage is a substance found throughout the skeletal system. One of its uses is on the end of bones to help support joints and reduce friction.
True - it also absorbs shock and helps to support body structures in the body
what organelle is responsible for photosynthesis?
chloroplasts in plants
what are the ingredients needed for respiration?
glucose + oxygen
Ligaments join bones and _________
Bones
Name the 3 tenets of Cell Theory.
1. All living things are made up of cells
2. Cells are the basic living unit of all living organisms
3. All cells arise from pre-existing cells
Lipase is an enzyme that helps to break down lipids (fats). It is found mainly in saliva (in the mouth)
False - saliva contains mostly amylase. Lipase is found mainly in the small intestine.
what is the function of the ribosomes?
to make proteins
why is photosynthesis crucial for life on Earth?
conversion of light (inorganic) energy to chemical (organic) energy
oxygen production
Neurons transmit signals electrically and chemically. What is the name of the chemical transmitter between neurons (in the synaptic gap)?
Neurotransmitter
how do cells reproduce?
divide into 2, through mitosis