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31 terms

Biology Exam 2 Quiz questions

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Viruses are made of the same four types of biological molecules as living cells. These include all of the following exceptc
caspids
In an atom, the electrons are
present in various energy shells.
Rank the following chemical bonds from weakest to strongest:
hydrogen, ionic, covalent
Surface tension of water is due to
hydrogen bonding
The internal pH of most cells is near neutral. This allows
enzymes within the cells to act at peak efficiency
Joining thousands of simple sugars together through a series of chemical reactions forms polysaccharides.
These are referred to as _____________ reactions.
condensation
An atom in which the number of electrons is different from the number of protons is called a(n)
ion
Which of the following elements is not particularly abundant in living cells?
helium
Water is often known as a universal solvent. This is not exactly true, as water dissolves polar molecules as well as
ionic compounds
Because of the atomic structure of carbon, it tends to form
covalent bonds
Most cells are small. When they reach a certain size, cells typically divide. This has to do with the
Surface-to-volume-ratio
These break down carbon containing molecules to make ATP
mitochondria
Structure surrounding the viral nucleic acids
capsid
The outer portion of the viral particle
envelope
Modification of proteins takes place, often determining the final destination of these proteins
Golgi apparatus
Lipids and phospholipids are produced here.
smooth endoplasmic reticulum
A stone is pushed from the top of a hill. Halfway to the bottom of the hill, this rolling stone
has both potential energy and kinetic energy
Substances that start chemical reactions are called
reactants
In photosynthesis, the light-dependent reactions
produce ATP and NADPH.
The chemical reactions associated with metabolism
are energy absorbing and energy releasing
Which of the following is not a product of cellular respiration?
oxygen
How many turns of the Krebs cycle are necessary to completely break down one molecule of glucose?
2
Which of the following does not take place during the first of the two phases of photosynthesis?
Carbon dioxide is fixed
Hummingbirds break down (oxidize) glucose and other food molecules during cellular aerobic respiration. The carbon atoms in these organic molecules are released as ____________during the _____________.
carbon dioxide, Krebs Cycle
The primary energy carrier between the Krebs cycle and the electron transport system is
NADH
Which color of light has the least important role in photosynthesis?
green
glucose is split into two molecules; produces two ATP
Glycolysis
electron transport chain
joins high energy electrons with oxygen and hydrogen to form water; produces much ATP
Most of a cell's ATP is produced during this cellular process
electron transport chain in the mitochondria
Water is split and ATP and NADPH are produced.
light trapping phase of photosynthesis
Glucose is oxidized to pyruvate
Glycolysis