EOC Review

Mrs. StewartBiology Standard

A.

B.

C.

D.

E.

What would most likely result if nitrogen-fixing bacteria in an area were destroyed?

Vegetation in the area would find other nutrient sources

Vegetation in the area would not be affected

Vegetation in the area would grow at a faster rateVegetation in the area would grow at a slower rate

A.

B.

C.

D.

E.

In certain species of guinea pigs, black fur is dominant to white fur. If a white male guinea pig is crossed with a black homozygous dominant female, what is the probability of having offspring with black fur?

25%

50%

75%

100%

A.

B.

C.

D.

E.

Which factor is most likely to initiate the process of succession in which a deep freshwater lake becomes a woodland area?

Increase in the invertebrate population

Change in the pH of the lake water

Growth of microorganisms

Accumulation of sediment

A.

B.

C.

D.

E.

A.

B.

C.

D.

E.

What is the mode of inheritance for this disorder?

A nonsex-linked dominant trait

A sex-linked trait carried on the Y chromosome

A nonsex-linked recessive trait

A sex linked trait carried on the X chromosome

A.

B.

C.

D.

E.

A growth curve for a population of crabs is shown. What is happening at Point A?

Intro. Of a new predator is causing a decline in population growth of crabs

Destruction of habitat is causing a decline in the population of the crabs

Population growth decreases as individual crabs get older

The population is stabilizing as it approaches carrying capacity

A

A.

B.

C.

D.

E.

Meiotic cell division results in gametes that produce sperm & egg cells by:

Increasing the daughter chromosome number by 75%

Increasing the daughter chromosome number by 50%

Reducing the daughter chromosome number by 75%

Reducing the daughter chromosome number by 50%

A.

B.

C.

D.

E.

An ecosystem has a stable population of white-tailed deer. What is the most likely outcome if a new species of deer that competed for the same resources were introduced?

The predator population would decrease

The white tailed deer population would not be affected

The white tailed deer population would increase

The producer population would decrease

A.

B.

C.

D.

E.

Which process most contributes to genetic variation in a population?

Duplication of chromosomes in asexual reproduction

Cytokinesis during cellular division

Chromsome replication during mitosis

Crossing over during meiosis

A.

B.

C.

D.

E.

Scientists have developed a way to analyze and compare DNA sequences between humans. Using this genetic info would be most beneficial for:

Determining proteins produced in skin cells

Creating new gene sequences

Dating the age of fossils

Identifying individuals

A.

B.

C.

D.

E.

According to the data table, which statement best supports the student’s conclusion?

Subjects S and T are the same gender

Subjects Q and S have the same resting blood pressureSubjects Q and R are different agesSubjects R and T have different resting blood pressure

Test subject

Age Gender Resting heart rate

Resting blood pressure

Q 15 M 70 115/80R 32 M 70 115/80S 15 F 76 115/80T 32 F 76 152/98

A.

B.

C.

D.

E.

C6H12O6 + 6O2 6CO2 + 6H20 + 36 ATPWhich process does this equation represent?

Nitrogen fixation

Anaerobic respiration

Photosynthesis

Aerobic respiration

A.

B.

C.

D.

E.

One species of bird arrives on an island chain. Different species evolve from the original species to adapt to different available niches. This is an example of:

Graduated equilibrium

Dynamic equilibrium

Convergent evolution

Divergent evolution

A.

B.

C.

D.

E.

Based on the name alone, which macromolecule category would “Lactase” belong?

Lipids

Nucleic Acids

Carbohydrates

Proteins

A.

B.

C.

D.

E.

Based on the data table, which molecules are present in the unknown solution?

Lipids and proteins

Starches and lipids

Proteins and starches

Sugars and proteins TESTING INDICATOR

OBSERVATION

IODINE Brownish-orange

BENEDICT’S SOLN Orange

BIURET SOLN Purple

BROWN PAPER BAG No mark left

A.

B.

C.

D.

E.

A forest area is being harvested, causing a reduction in resources. The organism most likely to become extinct as a result is:

One that has a great amount of genetic variation

One that feeds from a variety of sources

One with a high rate of reproduction

One with a specialized diet

A.

B.

C.

D.

E.

Which statement identifies the cells correctly?

Both cells are eukaryotic

Both cells are prokaryotic

Cell 1 is eukaryotic; cell 2 is prokaryotic

Cell 1 is prokaryotic; cell 2 is eukaryotic

Cell 1 Cell 2

A.

B.

C.

D.

E.

What is the most likely reason the species shown have similar limb structures?

Adapted to the same environment

Occupy the same level in a food pyramid

Use their limbs for the same functions

Share a common ancestor

A.

B.

C.

D.

E.

Which two birds are most closely related?

Robin and ovenbird

Western kingbird and eastern bluebird

Western kingbird and ovenbird

Eastern bluebird and robin

Eastern Bluebird

Western Kingbird

Oven bird Robin

Family Turdidae Tyranidae Parulidae TurdidaeGenus Sialia Tyrannus Seiurus TurdusSpecies sialis verticalis aurocapillu

smigratorius

A.

B.

C.

D.

E.

How will a researcher verify that his results are free from bias?

Extending his research for three more years

Testing a larger population of subjects using different brands

Investigating similar products and their results

Having an independent research company perform the same investigation

A.

B.

C.

D.

E.

Antibodies are composed primarily of amino acids. In which class of biomolecules would antibodies belong?

lipids

Nucleic acids

carbohydrates

proteins

A.

B.

C.

D.

E.

Which organism on the energy pyramid receives the least amount of energy from the producer?

krill

herring

seals

whales whales

Seals

Herring

Krill

Phyloplankton

A.

B.

C.

D.

E.

An inventor builds and markets a product. Which step has he neglected to do?

Identify a need

Narrow the research

Define the problem

Verify the results

A.

B.

C.

D.

E.

The physical differences among the fish are most likely:

A respiration adaptation due to different oxygen levels

An osmotic adapation due to salinity levels

A swimming adaptation due to water temperature

A feeding adaptation due to competition for food

A.

B.

C.

D.

E.

Which tool is best for a student to use to observe mitosis in an onion root tip?

flask

Gel electrophoresis

Triple beam balance

microscope

A.

B.

C.

D.

E.

What would most likely result if a waterborne bacteria caused the death of most of the minnow population?

Decrease in both algae and zooplankton population

Increase in both perch and hawk population

Increase in both zooplankton and perch population

Decrease in both perch and hawk population

Algae

Zooplankton

Minnow

Perch

Hawk

A.

B.

C.

D.

E.

Which statement best describes the interdependence of photosynthesis and cellular respiration?

The products of photosynthesis are the same as the products of cellular respiration

The reactants of photosynthesis are sugar and oxygen to be used in cellular respiration

The products of photosynthesis are carbon dioxide and water to be used in cellular respirationThe reactants of photosynthesis are the products of cellular respiration

A.

B.

C.

D.

E.

During protein synthesis, a section of the DNA molecule is copied into which other molecule?

Transfer RNA

Nucleic DNA

Cytoplasmic DNA

Messenger RNA

A.

B.

C.

D.

E.

Which set of chromosomes shows a mutation?

2

16

11

23

A.

B.

C.

D.

E.

The enzyme catalase is involved in the breakdown of hydrogen peroxide into water and oxygen. During this reaction, catalase:

Is formed into a new enzyme

Is changed into a product

Is used up

Is unchanged

A.

B.

C.

D.

E.

Enzymes…

Provide CO2 for chemical reactions

Absorb excess heat so that reactions occur at lower temperatures

Heat up molecules so they can react

Are biological catalysts

A.

B.

C.

D.

E.

Zebra mussels have spread quickly through the Great Lakes region. They reproduce quickly and have few natural predators. What will most likely happen to other native mussel species in that region?

Native species will mutate to become less similar to zebra mussels

Native species will mutate to become more similar to zebra mussels

Native species will begin to interbreed with zebra musselsNative species will decrease in areas with large zebra mussel populations

A.

B.

C.

D.

E.

Animals store glucose in the form of…

cellulose

lipids

wax

glycogen

A.

B.

C.

D.

E.

The graph below represents which type of reaction?

Exergonic

Exothermic

Endothermic

A.

B.

C.

D.

E.

In the reaction below, which stage is decreased by the addition of a catalyst?

AHkJEA

A.

B.

C.

D.

E.

The structure below is most likely found in…

Nucleic acids

carbohydrates

proteins

Fatty acids

TIE BREAKER

1st to answer correctly is the winner.

The original DNA strand for the gene, lactase, undergoes a deletion mutation in the first codon. Lactase is responsible for the breakdown of lactose (found in dairy products). Explain the effect produced on that enzyme.