The gas that is given off by plants in direct sunlight.
What is oxygen?
100
Sodium has 11 protons, 11 electrons and 12 neutrons. This is it's atomic mass.
What is what is 23.
100
Enzymes are this kind of macromolecule and are made up of this kind of monomer.
What are proteins which are made up of amino acids?
100
Bacteria are an example of this kind of cell.
What is a prokaryotic cell?
100
A substance has a pH of 8.0. This word is used to describe this kind of substance.
What is a base?
200
The type of organism that can make its own food from the environment.
What is an autotroph?
200
Isotopes are atoms that are alike every way except this.
What is the number of neutrons?
200
This element is found in proteins but not carbohydrates or lipids.
Nitrogen
200
Both prokaryotic and eukaryotic cells share this organelle, chemical substance or area of the cell.
What is they both have:
a cell membrane/cytoplasm/DNA/ribosomes
(nay one of these is OK!)
200
The fact that your body temperature remains approximately 37 degrees Celsius is an example of this characteristic of life.
What is to maintain a stable internal environment or homeostasis?
300
The two body systems that are required for the body to produce ATP.
What are the digestive and respiratory systems?
300
In ocean water this is the solute.
What is salt.
300
This kind of lipid is found in olive oil and can be recognized from its chemical structure because of this characteristic.
What is unsaturated fat that has at least one double bond between the carbon atoms?
300
Enzymes are made by this organelle.
What are ribosomes?
300
This macromolecule makes up structures such as fingernails, hair, muscles and skin in humans.
What is protein?
400
This is why leaves are green with the exception of during autumn.
Chlorophyll is the most abundant pigment.
400
N2 and HNO3 are both molecules. N2 is this kind of molecule.
What is a molecule of an element?
400
This kind of macromolecule always contains phosphate and is made of these monomers.
What is nucleic acid which is made up of nucleotides?
400
The organelle that converts sugars into energy.
What is the mitochondria?
400
The insecticide DDT was widely used to kill mosquitoes all over the world for many years. After a while, however, mosquitoes would not longer die when sprayed with DDT. Mosquitoes were demonstrating this characteristic of life.
What is evolution?
500
This is how energy is released from an ATP molecule.
A phosphate group is removed from adenosine and ribose.
500
This is what occurs when one group of chemical substances changes into another group of chemical substances.
What is a chemical reaction?
500
In humans, this substance plays a central role as an energy source.
What is a carbohydrate?
500
These two macromolecules make up the cell organelle that controls what enters and exits the cell.
What are protein and lipid?
500
The organization of life from simple to complex.
organelle, cell, tissue, organ, organ system, organism