EOCE Review!

Thinking like a Scientist Biochemistry Cells Genetics Evolution

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EOCE Review!

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What is the best definition of a scientific theory?

A. An explanation of how and why a natural phenomenon behaves the way it does

B. A description of an invariable relationship that exists in nature

C. A speculation or guess about how nature works

D. An unproven fact

No, try again please!

A scientist studies the effects that barnyard grass, a weed, has on the growth of rice, others weeds, and insects. The barnyard grass and other weeds, rice and insects make up which level of biological organization?

A. populationB. communityC. ecosystemD. biome


A. Tall individuals are always heavier than short individuals

B. There is no relationship between height and weightC. There is a positive relationship between height and

weightD. There is a negative relationship between height and

weight

Scientists collected data on the height and weight of individuals in a population. They recorded their results in a scatterplot. What is the most accurate conclusion regarding the relationship between height and weight?


A student wants to determine whether temperature affects the rate at which mold grows on bread. The student closes the lid, and places the Petri dish in the refrigerator. Which treatment would be the best comparison for this experiment?

A. Placing another piece of bread in an open Petri dish in the same refrigerator

B. Placing another piece of bread in a closed Petri dish on the countertop

C. Placing another piece of bread in an open Petri dish on the countertop

D. Placing another piece of bread in a closed Petri dish in the same refrigerator


Two students grow 2 distinct strains of E. coli bacteria. In Experiment 1, they use a new culture of Strain X and a 30-day old culture of Strain Y. IN Experiment 2, they use a new culture of Strain Y and a 30-day old culture of Stain X. They measure the number of bacterial colonies and record the data in these graphs. What is the most accurate conclusion?

A. Strain X grows faster than Strain Y regardless of the culture’s age

B. Strain Y grows faster then Strain X regardless of the culture’s age

C. The new culture grows faster regardless of the strain.

D. The 30-day old culture grows faster regardless of the strain.


What key factor distinguishes organic compounds from inorganic compounds?

A. Organic compounds contain hydrogen

B. Organic compounds provide energy for cells

C. Organic compounds contain carbonD. Organic compounds are the building

blocks of cells


Which solution has the greatest concentration of hydroxide ions (OH-)?

A. Urine (pH 6.0)B. Rainwater (pH 5.5)C. Tomato juice (pH 4.0)D. Gastric juice (pH 2.0)


How do enzymes speed up chemical reactions?

A. By increasing activation energyB. By increasing energy produced

by the reactionC. By reducing energy produced

by the reactionD. By reducing activation energy


A scientist places a cell in a solution, and over time the cell gains mass and swells. What is the most likely explanation for the cell’s gain in mass.

A. The solution and the cell have equal concentrations of water.

B. The solution and the cell have equal concentrations of solutes.

C. The solution is hypotonic to the cell.D. The solution is hypertonic to the cell.


When the pH in a stomach increases from 2 to 4, how does the hydrogen ion concentration change?

A. It increases by a factor of 100.B. It increases by a factor of 2.C. It decreases by a factor of 100.D. It decreases by a factor of 2.


The hydrolysis of which molecule provides energy for muscle contraction?

A. GlucoseB. Lactic AcidC. OxygenD. ATP


Megan examines a liver cell and observes an organelle with many smooth-sided channels. Which activity would identify this organelle as the Golgi apparatus?

A. Digestion of macromolecules and old organelles

B. Processing and packaging of cellular materials prior to export

C. Harvesting of energy from organic molecules to make ATP

D. Detoxification of poisonous molecules within the cell


Naomi adds cycloheximide to cells grown in a test tube. Within minutes, she identifies short incomplete segments of proteins in the cells On which organelle does cycloheximide act?

A. RibosomeB. Golgi apparatusC. Endoplasmic reticulumD. Nucleus


These diagrams represent different stages of animal cell division. What is the correct order from start to finish?

A. 3, 2, 1, 4B. 3, 1, 2, 4C. 2, 4, 3, 1D. 2, 3, 4, 1


During aerobic cellular respiration, where do ATP molecules form?

A. Cytoplasm, mitochondrial matrix, and mitochondrial membrane only

B. Mitochondrial matrix and mitochondrial membrane only

C. Cytoplasm onlyD. Mitochondrial matrix only


What occurs during metaphase I of meiosis?

A. Homologous chromosome pairs line up along the cell’s equator.

B. Homologous chromosomes move toward opposite poles of the cell

C. Centromeres of replicated chromosomes line up along the cell’s equator.

D. Centromeres divide as sister chromatids move towards opposite poles of the cell’s equator.


How does the regulation of gene expression lead to cell specialization?

A. Enzymes degrade unnecessary DNA.B. Mutations change certain RNA

sequences.C. Removal of exons from RNA prevents

translation into proteinD. Methylation of some regions of DNA

prevents transcription.


Which example best illustrates Mendel’s law of independent assortment?

A. A tall purple-flowered pea plant and a short white-flowered pea plant are crossed, producing offspring including tall white-flowered pea plants.

B. A red-flowered snapdragon and a white-flowered snapdragon are crossed, producing offspring with pink flowers.

C. Two short-haired cats produce a litter of 4 kittens including 1 long-haired and 3 short-haired.

D. A color-blind man and a woman with normal vision produce a son with normal vision and a color-blind daughter.


Jeanine inherited 2 alleles for round eye shape and has round eye shape. Her brother inherited 1 allele for round eye shape and 1 allele for almond eye shape. What type of trait is round eye shape?

A. Co-dominantB. DominantC. RecessiveD. Sex-linked


Two black guinea pigs bred and produced 3 black offspring and 2 albino offspring. Assuming no mutations, which guinea pigs must be heterozygous?

A. All 3 black offspringB. Exactly 2 of the black offspringC. Both parentsD. Both albino offspring


When comparing 2 populations of animals, which statement most likely indicates that they are the same species?

A. They inhabit the same general area.B. Their outward appearance is similar.C. They produce fertile offspring.D. They consume the same type of

diet.


Which example best illustrates the process of natural selection?

A. Giraffe necks varied in length, and all offspring had an equal chance of survival.

B. Giraffes with short necks migrated to locations best suited for their neck lengths.

C. Giraffe necks varied in length, and the short necked giraffes were at a disadvantage.

D. Giraffes stretched their necks to read for food, and resulting offspring had longer necks.


Maria wanted to rid her home of cockroaches. She applied pesticide and after 1 day she found many dead cockroaches. Days later, she observed a few live cockroaches. She reapplied the pesticide, but she continued to see some live cockroaches. What best explains the continuing presence of live cockroaches?

A. A few cockroaches detected the pesticide and avoided sprayed areas.

B. A few cockroaches exhibited pesticide resistance due to natural variability with population.

C. A few cockroaches developed pesticide resistance through contact with other resistant insects.

D. A few cockroaches developed pesticide resistance after contact with it.


Horse skeleton fossils indicate that the size of horses increased over time. Which statement best explains the fossil record?

A. Smaller horses bred with larger horses, creating hybrids

B. Smaller horses were infected by a fatal virus early in history

C. Larger horses consumed the food supply of the smaller horses

D. Larger horses produced a slightly greater number of surviving offspring


Dinosaur species dominated Earth for over 100 million years. During this time, most mammals were small mouse-sized nocturnal organisms. Following the mass extinction of the dinosaurs, the small mammals rapidly diversified to fill available habitats and niches. What pattern of evolution explains the diversification of mammals?

A. CatastrophismB. Punctuated equilibriumC. GradualismD. Convergent evolution


Correct AnswerBack to game board.

Date post:	22-Feb-2016
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