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Youngberg's honors biology semester 1 final
Terms in this set (24)
What fubctional group acts as an acid? And a base?
What are the main types of chemical chemical bonds
Covalent bonds= formed when electrons are shared between atoms
Ionic bond= formed when one or more electrons are transferred from one atom to another
How many electrons does an atom of aluminum contain
What relationship exists between the mass number of an element and the isotopes of that element
An atom is classified an isotope looses or gains neutrons. The mass number relies on the amount of neutrons.
What are the six functional groups
In the general reaction X+Y> XY, X reacts with Y producing XY and releasing a lot of heat. Why does this reaction occur spontaneously, while the reverse reaction XY>X+Y generally not occur
The reaction X+Y>XY is a chemical reaction that releases a lot of energy in the form of heat. Such reactions often occur spontaneously. The reverse reaction, however, must absorb a lot in order to occur. Chemical reactions the absorb energy will not occur without a source of energy
How can you account for the great number, size, and complexity of organic compounds
Carbon is so diverse that it can bond with anything including itself. Since carbon is in all the basic 4 groups of organic compounds they differ.
Compare and contrast adhesion and cohesion using capillary action
Both adhesion and cohesion are attractions. They are different in that adhesion is the force of attraction between the molecules of the same substance. Capillary action is the effect of the adhesion between water and glass that causes water to rise in a narrow tube against the force of gravity. Because of hydrogen bonding, water is extremely cohesive. Cohesion holds the column of water together as it rises.
Explain the terms of osmosis, why a raisin paced in a cup of pure water overnight will puff up with water
Because the concentration of water in the cup is greater than the concentration of water in the raisin, water will flow from the cup into the raisin
How do facilitated diffusion and active transport differ
Facilities diffusion is the movement through a protein channel of molecules that could not otherwise cross the membrane. Facilitated diffusion occurs only with a concentration difference and does not require additional energy. Active transport is the movement of materials across a cell membrane against a concentration difference and does not require the addition of energy
If an atom contains 11 protons and 12 neutrons what is its atomic number
What does the space surrounding the nucleus contain?
If a reaction in one direction releases energy, what does the reaction in opposite direction do?
If chlorine had 17 protons and 18 neutrons what would it be called?
What is a substance with a Ph of 6 called?
What is true about catalysts?
Catalysts lower the activation energy of a chemical reaction
Which kingdom contains heterotrophs with cell walls of chitin
The three-domain system recognizes fundamental differences between two groups
What are the channels and pumps made out of that are in the cell membrane
An organ system is a group of organs that do what
Work together to perform a specific function
Solutions that contain concentrations of H+ ions lower than pure water are...
Which of the following organic compounds are the main source of energy for living things
When salt is dissolved in water, water is considered the..
Amino acid is to protein as...
Simple sugar is to starch
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