Biology Flashcards
Auxins cause the cell to do what?
Elongate, making the shoot grow straight up
Which hormone is plant growth controlled by?
Auxins
What is a drug?
A drug is a chemical that affects the psychology of the body, like how they central nervous system works.
What’s a stimulant?
Stimulant speed up the activity of the nervous system by increasing the release of neurotransmitters at certain synapses in the brain
Where are auxins produced?
In the shoot tip
Give an example of a stimulant
Caffeine, nicotine, cocaine and ecstasy
What’ do depressants do?
Slow down the nervous system
Give an example of a depressant
Valium, Halclon, alcohol, Xanax
How many cells do bacteria consist of?
One
What’s a vacuole?
A fluid filled cavity that stores water and nutrients
What is the cell necleus
The location of the cells DNA
What’s a chloroplast?
PLANTS ONLY
Site of photosynthesis, they have green pigment chlorophyll that absorbs the Suns energy
What’s the mitochondria
The sight of energy released by respiration
What are cells described as?
The building blocks of life
What does the nucleus control?
What goes in and out of the cell and what the cell does