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WorksheetsFinal Review
Total questions: 23
Worksheet time: 23mins
1. One end of Figure 17–1 shows an increase in average beak size for a population of birds. When individuals at only one end of a bell curve of phenotype frequencies have high fitness, the result is
Directional selection.
Stabilizing selection.
Disruptive selection.
Genetic drift.
1. Figure 17–2 shows highest fitness toward the center of the curve. When individuals with an average form of a trait have the highest fitness, the result is
not predictable.
disruptive selection.
directional selection
stabilizing selection.
1. Which of the following events do biologists consider a random change?
directional selection
disruptive selection
speciation
genetic drift
1. What situation might develop in a population having some plants whose flowers open at midday and other plants whose flowers open late in the day?
behavioral isolation
temporal isolation
geographic isolation
genetic drift
1. Species Y and Z have very different proteins and genes. What is most likely true about these two species? Species Y
Is older than Species Z.
Is younger than Species Z.
Evolved for a long time separately from Species Z.
Shares a relatively recent common ancestor with Species Z.
1. Which macromolecule is NOT aligned with its correct function?
Lipids - Long-term energy storage
Lipids - Creates barriers
Carbohydrates - Short-term energy storage
Proteins - Short-term energy storage
1. What is it called when an organism maintains a stable internal environment?
a. Stabilization
a. Equilibrium
b. Homeostasis
c. Isotonic
1. A farmer thinks that type of soil and amount of water affect the growth of his carrot plants, and he wants to find out if he is right.
The farmer first tests if the type of soil affects the growth of the carrot plants. He uses three different types of soil, and he places 10 carrot plants in each type of soil. He uses the same amount of water for all the plants.
Why is it important to use the same amount of water for all the plants?
a. By using the same amount of water, the farmer can learn about both the effect of the amount of water and the effect of the type of soil.
b. By using the same amount of water, the farmer can learn about the effect of the amount of water.
c. If he does not use the same amount of water, the farmer cannot learn about the effect of the type of soil.
d. It is NOT important to use the same amount of water because the farmer is not testing the effect of the amount of water.
1. What is TRUE about the inside of an animal cell?
a. The inside of an animal cell contains structures that carry out specialized functions for the cell, but no water or air. The inside of the cell is completely solid.
b. The inside of an animal cell contains water and molecules dissolved in the water, but no structures that perform specialized functions for the cell.
c. The inside of an animal cell contains air and structures that perform specialized functions for the cell, but no water.
d. The inside of an animal cell contains water, molecules dissolved in the water, and structures that perform specialized functions for the cell.
1. Which of the following is TRUE about the sugar molecules in plants?
a. The sugar molecules come from the soil.
b. The sugar molecules are the result of a chemical reaction.
c. The sugar molecules are one of many sources of food for plants.
d. The sugar molecules are made from molecules of water and minerals.
1. Which of the following is NOT a difference between DNA and RNA?
a. DNA is double stranded and RNA is single stranded.
b. DNA uses the base thymine and RNA uses the base uracil.
c. DNA uses the sugar deoxyribose and RNA uses the base ribose.
d. DNA carries genetic information and RNA stores energy.
1. What must the genotype of an organism be if they exhibit a recessive trait?
tt
a. TT
b. Tt
c. tT
d. tt
1. What is the difference between genotype and phenotype?
a. Genotype is the genetic makeup of a trait and phenotype is the physical appearance of the trait.
b. Phenotype is the genetic makeup of a trait and genotype is the physical appearance of the trait.
c. Genotype is the dominant expression of a trait and phenotype is the recessive expression of a trait.
d. Phenotype is the dominant expression of a trait and genotype is the recessive expression of a trait.
1. What is the probability of an offspring exhibiting the dominant trait in the following heterozygous cross: Ss X Ss?
a. 100%
b. 75%
c. 50%
d. 25%
1. How does evolution occur?
a. When an acquired characteristic that benefits an organism is passed on to its offspring.
b. When a heritable characteristic that benefits an organism is passed on to its offspring.
c. Evolution does not through natural or artificial selection.
d. There is no evidence of evolution.
1. What does the theory of common descent propose?
a. That all living organisms today came from a common ancestor.
b. That all living organisms today have been around since life began on earth.
c. That organisms of the same bloodline tend to look alike.
d. That organisms are very different today because they don't share a common ancestor.
1. The somatic cells in the human body have ____________ (#) chromosomes, but the sperm and egg cells (gametes) have ____________ (#) chromosomes:
a. 46 / 23
b. 23 / 46
c. 46 / 46
d. 23 / 23
1. If a cell lacked ribosomes, it would NOT be able to
a. Form a spindle apparatus.
b. Synthesize proteins.
c. Respire.
d. Hydrolyze fat.
1. Both plant and animal cells have mitochondria because they both
a. Carry on photosynthesis.
b. Have a large central vacuole.
c. Have endoplasmic reticulum.
d. Need ATP for energy.
1. What is the major component of the cell membrane?
a. Lipid
b. Protein
c. Nucleic acid
d. Carbohydrate
1. What is the diploid number for a flatworm that has a haploid number of 6?
a. 3
b. 9
c. 12
d. 18
1. Some peeled pieces of apple were placed in distilled water and some in very salty water. The cells in the apple pieces will _______
a. lose water in both solutions
b. gain water in both solutions
c. lose water in the distilled water and gain water in the salty water
d. gain water in the distilled water and lose water in the salty water
1. A gene contains 27% Adenine; which of these statements is true?
a. 27% Guanine
b. 73% Thymine
c. 23% Cytosine
d. 73% Cytosine
