Just
The study of matter and the changes it experiences is called
chemistry
True or false:
all compounds are molecules
false, an ionic compound is not a molecule. Only covalently bonded atoms are called molecules
Why do lipids not dissolve in water
they are nonpolar and water is polar
for dissolving, like dissolves like (referring to being polar or nonpolar)
The attraction of water molecules to other water molecules is called
cohesion
The attraction of water molecules to other things besides water molecules is called (example, the sides of a test tube)
adhesion
Which of the following is not reason why carbon is important to all life?
a. carbon atoms can form chains or rings
b. carbon can bond with itself
c. carbon can form up to four bonds
d. carbon can form graphite or diamonds
d.
the fact that carbon can form diamonds does not make it useful for life, all the other stuff does
Define an unsaturated fat
a lipid with double or triple bonds
is liquid at room temperature
The main contributor to diffusion is
Brownian motion
what two things can bond to the active site of an enzyme.
an inhibitor and a substrate
Discuss in detail why water is important for living things
it is very polar, making it a very good solvent of many different organic and ionic compounds. the electrically charged hydrogen atoms on a water molecule have an attraction for both other water molecules (cohesion) and other substances (adhesion) adhesion plays a critical role in how water moves up a plant
Lithium and fluorine chemically combine to form lithium fluoride. Identify the reactants and products in this reaction.
lithium and fluorine are the reactants
lithium fluoride is the product
what is the difference between an inhibitor and a substrate
both bond to the active site, but the substrate is the substance the enzyme is trying to break down, while the inhibitor bonds in order to stop the enzyme from continuing to break down substrates
Describe the basic structure of each of the four main groups of organic compounds found in living things. give an example of a compound for each group
carbohydrates, such as glucose, are made of carbon, hydrogen, and oxygen. They can form rings or hook together to form large polymers such as cellulose. Lipids consist of a three-carbon hub attached to long tails of carbon atoms. These tails may be either saturated (having only single bonds) or unsaturated (having double and/or triple bonds). Lipids include fats and oils. Proteins, such as tho9se that make up muscle, are polymers made from amino acids. These polymers can fold into complex three-dimensional shapes such as helixes or pleated sheets,. Nucleotides consist of a sugar, a phosphate group, and a nitrogenous base. RNA and DNA are polymers made from nucleotides.
Explain how a biblical worldview can help one to properly use one's knowledge of chemistry
we understand that humans are made in God's image and that God's love can be demonstrated in service to others. An understanding of chemistry can be used to render such service to others
what is a peptide bond and how is it formed
a peptide bond is a chemical bond between two amino acids formed when a carboxyl group from one amino acid reacts with the amine group on an adjacent amino acid, forming a water molecule, which is released. this reaction exposes a carbon atom on one amino acid and a nitrogen atom on the other amino acid; the amino acids bind together to form a chemical bond.