Based on your observations, what you know about science, and your creativity, you suggest that seeds will grow best in water that is NOT acidic. This step in the scientific methods is described by this term.
What is a hypothesis?
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
Your blood has a pH of 7.4. This word is used to describe this kind of substance.
What is a base?
200
If leaf color change is related to temperature , then exposing plants to low temperatures will result in changes in leaf color.
In this hypothesis, temperature is this kind of factor in the experiment?
What is the independent variable?
200
Isotopes are atoms that are alike every way except this.
What is the number of neutrons?
200
You can tell a molecule is a carbohydrate by this characteristic.
What is a ratio of 2 hydrogens for every one 1 oxygen.
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
When I make the statement, " The bark of the birch tree is white," I am doing what is required for this step of the scientific method.
What is make a observation?
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 and skin in humans.
What is protein?
400
Scientists working on restoring the New Jersey shore line after Hurricane Sandy stated that marsh grass would grow taller if nitrogen was added to the soil. This logical interpretation of what scientists already know allows them to form a hypothesis and is called this.
What is an inference?
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
If the contents of this organelle spill into the cytoplasm all at once, it could destroy the cell.
What is the lysosome?
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
Two group of fruit flies are tested to see if adding vitamin E to their food, improves their ability to produce more offspring (babies). Flies in group A are given regular food and flies in group B are given food that has vitamin E added.
What term describes the role of group A in this experiment?
What is control group?
500
This is what occurs when one group of chemical substances changes into another group of chemical substances.
What is a chemical reaction?
500
Catalase is an enzyme that can break down hydrogen peroxide into water and oxygen. This is the substrate in this reaction.
What is hydrogen peroxide?
500
These two macromolecules make up the cell organelle that controls what enters and exits the cell.
What are protein and lipid?
500
This explains the reason that lipids are not polymers.
What is the fact that lipid molecules do not bond together to form long chains of repeating units.