Living Environment Review 4: Genetics Part 2 Question Preview (ID: 47421)


Genetics Continued. TEACHERS: click here for quick copy question ID numbers.

If 15% of a DNA sample is made up of thymine, T, what percentage of the sample is made up of cytosine, C?
a) 15%
b) 35%
c) 70%
d) 85%

DNA samples can be separated according to size using the technique of
a) chromatography
b) electrophoresis
c) replication
d) dissection

The DNA of a fly and the DNA of a gorilla are made up of subunits that are
a) arranged in the same order in both species
b) different bases in each of the two species
c) arranged in chains of the same length in both species
d) in different sequences in each of the two species

The function of the coded instructions contained in the body cells of an organism is to
a) form a variety of gametes that will pass on hereditary information
b) direct the synthesis of proteins necessary for proper cell function
c) synthesize different kinds of amino acids in a specific sequence
d) produce the inorganic molecules needed for normal cell growth

For which organic compounds must information be encoded in DNA for green plants to synthesize the other three compounds?
a) sugars
b) starches
c) fats
d) proteins

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 digestion of altered gene by enzymes
c) a change in the sequence of amino acids determined by the gene
d) the release of antibodies by certain cells to correct the error

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.

Which statement best describes the relationship between cells, DNA, and proteins?
a) Cells contain DNA that controls the production of proteins.
b) DNA is composed of proteins that carry coded information for how cells function.
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.

Synthesis of a defective protein may result from an alteration in
a) vacuole shape
b) the number of mitochondria
c) a base sequence code
d) cellular fat concentration

Changing one base in a gene could have the most direct effect on the
a) function of the membrane of a cell
b) sequence of building blocks of a protein found in a cell
c) number of mitochondria in cell
d) type of carbohydrates synthesized by a cell

Which two cell structures work together in the process of protein synthesis?
a) nucleus and chloroplast
b) nucleus and ribosome
c) ribosome and vacuole
d) mitochondrion and cell membrane

In a cell, protein synthesis is the primary function of
a) ribosomes
b) mitochondria
c) chloroplasts
d) vacuoles

m
a) n
b)
c)
d)

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