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Living Environment Review 4: Genetics Part 2
Test Description: Genetics continued
Instructions: Answer all questions to get your test result.
1) If 15% of a DNA sample is made up of thymine, T, what percentage of the sample is made up of cytosine, C?
A
35%
B
15%
C
85%
D
70%
2) DNA samples can be separated according to size using the technique of
A
chromatography
B
replication
C
dissection
D
electrophoresis
3) The DNA of a fly and the DNA of a gorilla are made up of subunits that are
A
different bases in each of the two species
B
in different sequences in each of the two species
C
arranged in the same order in both species
D
arranged in chains of the same length in both species
4) The function of the coded instructions contained in the body cells of an organism is to
A
produce the inorganic molecules needed for normal cell growth
B
synthesize different kinds of amino acids in a specific sequence
C
form a variety of gametes that will pass on hereditary information
D
direct the synthesis of proteins necessary for proper cell function
5) For which organic compounds must information be encoded in DNA for green plants to synthesize the other three compounds?
A
fats
B
starches
C
proteins
D
sugars
6) A change in the order of DNA bases that code for a respiratory protein will most likely cause
A
the production of a starch that has a similar function
B
the release of antibodies by certain cells to correct the error
C
the digestion of altered gene by enzymes
D
a change in the sequence of amino acids determined by the gene
7) Which statement concerning simple sugars and amino acids is correct?
A
They are both waste resulting from protein synthesis.
B
They are both building blocks of starch.
C
They are both needed for the synthesis of larger molecules.
D
They are both stored as fat molecules in the liver.
8) Which statement best describes the relationship between cells, DNA, and proteins?
A
DNA is composed of proteins that carry coded information for how cells function.
B
Cells contain DNA that controls the production of proteins.
C
Proteins are used to produce cells that link amino acids together into DNA.
D
Cells are linked together by proteins to make different kinds of DNA molecules.
9) Synthesis of a defective protein may result from an alteration in
A
a base sequence code
B
the number of mitochondria
C
vacuole shape
D
cellular fat concentration
10) Changing one base in a gene could have the most direct effect on the
A
function of the membrane of a cell
B
number of mitochondria in cell
C
sequence of building blocks of a protein found in a cell
D
type of carbohydrates synthesized by a cell
11) Which two cell structures work together in the process of protein synthesis?
A
mitochondrion and cell membrane
B
ribosome and vacuole
C
nucleus and chloroplast
D
nucleus and ribosome
12) In a cell, protein synthesis is the primary function of
A
chloroplasts
B
vacuoles
C
ribosomes
D
mitochondria
13) m
A
n
*select an answer for all questions
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