Hoff-daddy's Study Guide
Most cells cannot harness heat to perform work because
Temperature is usually uniform throughout a cell.
Which level of protein structure is most directly related to specificity?
Tertiary
A controlled experiment is one that
Test experimental and control groups in parallel.
What is the oxidizing agent in the following reaction?
Pyruvate
Measurements show that the pH of a particular lake is 4.0.
10^-4 M
A slice of pizza has 500 kcal.
10°C
What coefficients must be placed in the following blanks so that all atoms are accounted for?
2;2
According to the figure above, MPF is its lowest level at the end of which stage?
4
According to the figure above, which number represents mitosis?
4
All the organisms on your campus make up
A community
If an enzyme solution is saturated with substrate,
Add more of the enzyme
If an enzyme in solution is saturated with substrate, we can produce a produce a product more quickly by
Add more substrate
Which of the following metabolic processes can occur w/out a net influx of energy?
C6H12O6 + 6 O2 --> 6 CO2 + 6 H2O
In the cells of some organisms, like grass, Cytokineses might be skipped. What's the result?
Cells will contain more than one nucleus
One difference between normal cells and cancer cells is that cancer cells-
Continue to divide even when crowded growing in a petri dish
Choose the pair of terms that correctly completes this sentence:
Exergonic; endergonic
The drug Cytochalasin D preserves eh cytoskeleton. Which of these would be disrupted by it?
Formation of cleavage furrow
Which of the following is stored in the human liver for energy?
Glucogen
Which metabolic pathway is common to both fermentation and cellular respiration in glucose?
Glycolysis
The immediate energy source that drives ATP synthesis during oxidative phosphorylation is the
H+ movement down its concentration gradient.
Which of the following statements about a particular molecule is correct?
H20 is polar - half of it is positively & negatively charged
Sulfurs atomic #=16. Sulfur combines with hydrogen by covalent bonding to form, hydrogen sulfide
H2S
When amino acids combine, certain atoms are removed. Which atoms are removed?
HOH
Which of the following is correct about the cell undergoing meiosis?
Homologous chromosomes are undergoing crossing over
Which of the following does NOT occur in the life of a normal skin cell?
Homologous pairs separate
Which of the following statements best distinguishes hypotheses from series in science?
Hypotheses- narrow in scope, Theories- explanatory power
Which of the following best describes the logic of science inquiry?
If my hypothesis is right I can expect certain test results
The pH of blood
Is normally close to 7.4
Which of the following is correct about a cell that passes through the G1 restriction point?
It will divide
Which of the following is correct about human skeletal muscle?
Its cells are larger and multinucleate
Which of the following statements is correct about cell division and the cell cycle? #1
MPF triggers a cell's passage from G2 to metaphase
Taxol disrupts micro-tubules assembly
Mitotic spindle formation
The final electron acceptor of the ETC that functions in aerobic oxidative phosphorylation is
Oxygen
The synaptonemal complex forms during
Pro-phase 1 of meiosis
Which of the following does not occur by mitosis?
Production of gametes
New polypeptides are released from ribosomes where A has HSP & B doesn't. Why did this happen?
Proper folding is critical for a protein to function
Chaperonins are involved with
Proper folding of proteins
Which property of water is responsible for the ability of sweat to lower body temperature?
The absorption of heat but the breaking of hydrogen bonds
The reactivity of an Atom arises from
The existence of an unpaid electrons in the valence shell.
Clothes washing detergent must be able to remove grease & oil from dirty clothing.
The molecule is half polar & half non polar to dissolve both
When electrons flow along the ETC of mitochondria, which of the following changes occurs?
The pH of the matrix increases
Which of the following correctly describes any chemical reaction that has reached equilibrium?
The rates of the forward and reverse reactions are equal.
Which is a factor that limits cell size?
The ratio of volume to cell surface are
Which of the following is correct about isotopes of carbon?
They are chemically identical & have the same # of electrons
All of the following statements are correct about enzymes EXCEPT
They raise the energy of activation of all reactions
One drop of water (HOH) and one ethyl alcohol (C2H5OH) are placed onto a glass slide.
Water exhibits greater cohesion tension than ethyl alcohol
All of the following are characteristics of water EXCEPT
Water molecules have little attraction for each other
Which of the following pairs of base sequences could form a short stretch of DNA?
5'-TTAA-3' with 3'-AATT-5'
Which of the following best describes the reaction shown below?
An exergonic reaction
Which of the following statements is correct about cell division and the cell cycle? #2
Normal cells grow and culture show density-dependent inhibition
If an enzyme is added to a solution (its substrate & product in equilibrium) what will occur?
Nothing; the reaction will stay at equilibrium.
We can be sure that a molecule of table sugar and a mole a vitamin see or equal in there
Number of molecules.
In mitochondria, exergonic redox reactions
Provide the energy that establishes the proton gradient.
Which of the following is an example of a hydrogen bond?
The attraction of oxygen to one water molecule & hydrogen
Which of the following statements is NOT correct about cell division?
The body spends more time in cell division than not
Which of the following is an example of qualitative data?
The cheese tastes good
Most CO2 from catabolism is released during
The citric acid cycle
Which of the following statements best explains the most likely problem with the drug?
The drug contained isomers that were mirror images.
Some bacteria are metabolically active in hot springs because
Their enzymes have high optimal temperatures.
Which of the following can be used to determine the rate of enzyme catalyzed reactions?
The rate of substrate used up
Which of the following best demonstrates the unity among all organisms?
The structure and function of DNA
