ACTUAL Exam Questions and CORRECT
Answers
Scientists are using genetic engineering to develop a wheat crop that is resistant to a particular
kind of moth. How would they determine if the plants are moth-resistant? - CORRECT
ANSWER - Monitor moth populations in fields planted
with test and normal wheat.
Which of these is a decomposer in a Virginia forest? - CORRECT ANSWER -A
mushroom
Students in a biology class thought that salt water would affect the movements of planaria. They
put 25 planaria in salt water and recorded their observations. Which flaw was present in the
design of their experiment? - CORRECT ANSWER - There was no control
Unlike plants, fungi cannot make their own food because they do not have - - CORRECT
ANSWER - chlorophyll
A biology student collected pine needles from four different species of trees. She then made
diagrams showing the number and actual length of needles in a bundle and the common and
scientific name of each species. Use her diagram above to help you answer the following
question. These four different pine trees are not classified in the same - - CORRECT
ANSWER - Species
Which feature do viruses have in common with animal cells? - CORRECT ANSWER -
Presence of a genetic code in nucleic acid
Gametes must be haploid because - CORRECT ANSWER - two gametes will unite during
fertilization to create a diploid cell
,The study of embryos and other early stages of development can help in the classification of
living things, past and present, by providing clues about the - - CORRECT ANSWER -
common ancestry among vertebrate species
An insect called the hemlock woolly adelgid was introduced to a Virginia forest ecosystem. This
pest feeds on the nutrients stored inside a hemlock tree, resulting in the death of the tree. Which
kind of data would best help a student evaluate the effect of this insect? - CORRECT
ANSWER - Information about the ecosystems characteristics
before the adelgid infestation
Which of these supports the cell theory as it is stated today? - CORRECT ANSWER -
New cells are produced by division of existing cells.
What did Rosalind Franklin contribute to the understanding of DNA molecules? - CORRECT
ANSWER - An image indicating the shape of a DNA molecule
When an animal eats, food stays in the stomach for a period of time. When a unicellular
organism, such as Paramecium, takes in food, the food is contained in which organelle? -
CORRECT ANSWER - Vacuole
Over many generations, unrelated or distantly related species may come to resemble each other
due to - - CORRECT ANSWER - similar environmental factors
Unknown animal: Met-Gly-Ser-Tyr-Tyr-Arg-His-His-Glu-Lys-Asp
One method of determining the classification of an animal is by comparing the amino acid
sequence. Which of these animals most closely resembles the unknown animal? - CORRECT
ANSWER - Dog: Met-Gly-Ser-Tyr-Tyr-Arg-His-Asp-Glu-Lys-Asp
What ratio of the offspring from the cross shown will be homozygous recessive for the trait of
tallness? - CORRECT ANSWER - 0 in 4
, Which of these is capable of moving quickly in response to its environment? - CORRECT
ANSWER - Paramecium
Which of the following macromolecules are a prominent part of animal tissues that function in
insulation, helping animals conserve heat? - CORRECT ANSWER - Lipids
The reduction of the chromosome number during meiosis is most important for - - CORRECT
ANSWER - maintaining the chromosome number during sexual reproduction
The above diagram shows the process of osmosis. Only the water molecules could enter the cell
because water molecules - - CORRECT ANSWER - are smaller than the protein molecules
Charles Darwin proposed his theory of evolution based on observations of nature. Which
observation that contributed to his theory is illustrated by this population of beetles? -
CORRECT ANSWER - Individuals within a population may vary widely
A biologist has just discovered a new life form. The newly described organism is multicellular,
does not carry on photosynthesis, and absorbs nutrients from the environment. It is composed of
eukaryotic cells with cell walls. In which kingdom would the organism be classified? -
CORRECT ANSWER - Fungi
Alexander Oparin hypothesized that early life forms may
have been formed by the action of the sun and lightning.
Miller and Urey found that methane, ammonia, and hydrogen
gas react to produce amino acids when exposed to temperature
fluctuations and electrical current.
Sidney Fox found that heating solutions of amino acids
produces primitive "protocells."
What did the work of these scientists contribute to the study of biology? - CORRECT
ANSWER - It supported hypotheses about the origin of life.