Astudent designs an experiment to see if different colors of light affect the number of flowers a plant produces. what should the student manipulate (change) for each group of plants? *
1 point
amount of water
type of soil
temperature of room
color of light bulb
a possible explanation for a scientific question or problem is a *
1 point
hypothesis
variable
procedure
data table
when testing how light affects plant growth, your independent (manipulated) variable would be *
1 point
the amount of water you give the plants
the temperature of the room where each plant is located
the height of the plant
the amount of light each plant receives
the basic unit of life is the *
1 point
atom
cell
molecule
nucleus
plant and animal cells are different because *
1 point
plant cells do not have a nucleus or mitochondria
animal cells do not have dna or ribosomes
plant cells do not have a cell membrane
animal cells do not have a cell wall or chloroplasts
the system that transports oxygen and nutrients to the cell is the *
1 point
immune system
digestive system
circulatory system
endocrine system
a nerve cell is called a *
1 point
neuron
notochord
lipid
lysosome
which of the following are listed in order of complexity? *
1
tissue, cell, organ, organ system, organism
organ, tissue, cell, organ system, organism
cell, tissue, organism, organ system, organ
cell, tissue, organ, organ system, organism