Bio Quiz #5 (10 questions)
Which sequence best represents the relationship between DNA and the traits of an organism?
1
If a mutation occurs, leaving 12 bases, what is the maximum number of amino acids that could be coded for by this DNA segment? amino acids
4
The diagram below represents a model of a biological process that occurs in humans at normal body temperature, 37°C. Increasing body temperature to 40°C would interfere most directly with the rate of function of structure (June 2012)
A
A + B + C——> protein Identify the type of building block represented by the letters A, B, and C
Amino acids
Which statement explains the importance of maintaining a constant internal environment to ensure proper enzyme functioning? (June 2013)
Increasing the temperature and pH can alter the specific shape of enzymes.
Researchers use a variety of techniques to learn more about the function of a specific gene in an organism. In one type of experiment, called a loss-of-function experiment, the gene being investigated is eliminated. In a gain-of-function experiment, extra copies of the gene being investigated are inserted. The cell process most directly affected in both experiments is (January 2012)
Protein synthesis 2
In a cell, protein synthesis is the primary function of (June 2013)
Ribosomes
Which cell structure synthesized the "Protein being exported"? (August 2012) REFER TO CHART
Ribosomes
For amino acids, A pairs with____ , C pairs with ____________ (DNA)
T, G
The graph below shows the results of an action of the enzyme catalase on a piece of meat. Evidence of enzyme activity is indicated by bubbles of oxygen. Which statement best summarizes the activity of catalase shown in the graph?
The enzyme works better at 35°C than at either temperature extreme
If the sequence of building blocks were changed, what effect could it most likely have on the protein?
The function would change
The work of a cell is carried out by the many different types of molecules it assembles. Most of these molecules are proteins. Explain how the cell is able to make the many different proteins it needs. In your answer, be sure to: • identify where in the cell the information necessary to construct a particular protein is located and the specific molecule that contains this information [1] • identify both the cellular structure that assembles these proteins and the kinds of molecules that are used as the building blocks of the proteins [1] (August 2014) Your Answer:
The information is in DNA molecules in the nucleus of the cell and ribosomes construct proteins out of amino acids.
Which statement best describes enzymes? (August 2012
The rate of activity of an enzyme might change as pH changes.
Which cell structures are correctly paired with their functions? (August 2013)
The ribosomes make proteins, and the nucleus stores genetic information
Which statement describes a similarity between all enzymes, antibodies, and hormones?
Their chemical structure is critical to their ability to function.
For amino acids, A pairs with____ , C pairs with ___________ (mRNA)
U, G
Identify the mRNA codons that would be produced using this DNA as a template. DNA base sequence: AAC GCC GTC CGC TAG mRNA codons:
UUG CGG CAG GCG AUC
The shape of a protein is originally determined by the (January 2012)
arrangement of amino acids in the protein
One effect of uncontrolled diabetes is that the blood might develop an acidic pH. As a result, cells may not be able to regulate their internal pH. Within these cells, this could cause a disruption of the function of biological catalysts known as (June 2014)
enzymes
The way a protein molecule is folded determines the shape of the molecule, which determines the (August 2012)
function of that protein
Which two cell structures work together in the process of protein synthesis? (January 2013)
nucleus and ribosome
The function of a specific enzyme is most directly influenced by its (January 2014)
physical shape
DNA is able to control cellular activities most directly by regulating the process of (June 2014)
protein synthesis 4