Cumulative Exam Answers

There is an algal bloom in a bay in a populated area. As the leading marine biologist in the area, what is the most important thing to do, based on scientific evidence about such blooms?

A forest fire destroys an area. A small population of trees and a large population of birds are both affected. Which type of limiting factor causes this?

Which most clearly shows evolutionary relationships between species?

Many scientists are concerned that the Ogallala aquifer in the United States is being depleted at an alarming rate. What would most likely be a major effect of this aquifer running dry?

Which of these can be found in both gymnosperms and angiosperms?

Why is water considered to be abiotic?

Pandas eat bamboo for energy. What are pandas?

Which statement correctly describes the electrons in a water molecule?

The figures below refer to a herd of water buffalo.Birth rate = 35 Death rate = 7Immigration = 4 Emigration = 17What is this population growth?

A biologist counts the number of zebras in a population each year, and notices an increase in the zebra population. Which describes the biologist’s actions?

Which organism is an animal-like protist?

Which is the correct order of processes that occur as water moves from a lake to a cloud and then back to Earth's surface?

Which is most likely a source of air pollution?

Which is accurate about the six kingdoms?

A disease-causing bacteria successfully enters your body, making it past the first and second lines of defense. Which barrier will then act on the bacteria?

If the data below were put into a bar graph, which animal would have the lowest bar on the bar graph?Number of Individuals in a Rocky Mountain Forest OrganismPopulationMountain lions150Bobcats300Coyotes10,000Deer25,000

Kudzu is a vine that was brought to the United States from Japan to prevent erosion. Once here, kudzu became invasive. What role does kudzu most likely play in the environment in the United States?

When the body receives stimuli, which structure typically processes the stimuli?

The overall population of a species decreased. What could have occurred to make this happen?

Smallpox is a virus that causes a rash that then turns into painful blisters. The last known case of smallpox was in 1977. What is the best explanation for the eradication of smallpox?

Veronica got a cut on her arm, and it started bleeding. Her circulatory system started working hard to prevent blood loss and protect against infection.Which two components of the blood were functioning at a higher level than normal?

The graph shows the changing levels of hormones during menstruation and ovulation. What happens to hormone levels during ovulation, and why is this important?

Which best describes an adaptation that could be found in a fish that lives in a slow-flowing stream?

What is likely to happen to a healthy population that is experiencing exponential growth?

Hyenas and lions have fierce battles over food. Which type of relationship does this describe?

Which is an advantage of flowering plants?

Which scientist disproved the idea that life comes from nonlife?

Which form of natural selection does the graph represent?

Some animals shiver as a natural, involuntary response to their environment. Shivering generates heat. This is an example of which function?

The sketch shows a rynchosaur, an extinct animal that is known only from fossils. There has been much debate about the classification of these creatures. Some scientists suggest that they belong with primitive amphibians, and some think they are related to snakes and lizards. The data equally support both cases.Which statement best explains how to draw a cladogram that includes the rynchosaur?

Consider this microscopic image of bacteria. Which bacterial form is shown in the image?

A weakened immune system may be caused by

When a person sees a doctor about a respiratory illness, the doctor will want to determine if the sickness is in the upper respiratory tract or the lower respiratory tract. The starting point for the lower respiratory system is the trachea.Which structures are part of the upper respiratory system? Select three options.the larynxthe bronchusthe alveolithe lungsthe pharynxthe nose

Brendan made a chart to categorize the characteristics of animals.

When comparing dogs to wolves, scientists found evidence that supports the idea they come from a common ancestor. Which combination of evidence would most strongly support this idea?

Mintu needs to determine the missing ecosystem in the set.intertidal zone, open ocean, ________, ________

This table incudes the characteristics of all major kingdoms.Characteristics of Each KingdomDomain KingdomBody typeCell typeBacteriaEubacteriaUnicellularProkaryoteArchaeaArchaebacteriaUnicellularProkaryoteEukaryaProtistaMost unicellularEukaryoteFungiBothEukaryotePlantaeMulticellularEukaryoteAnimaliaMulticellularEukaryoteBased on the table, which kingdom(s) includes more than one body type?

Male peacocks have large colorful tails that they spread in a fan shape to attract females during courtship. Peahens (female peacocks) are more likely to mate with males that have larger and more colorful tails. As a result, few peacocks have tails with dull coloring.Which concept is demonstrated by a decrease in dull coloring?

While walking to the kitchen in the middle of the night, Jamal tripped over an object that he could not see in the dark. Which part of the CNS sent a signal to help prevent Jamal from falling?

Antoinette was diagnosed with hypertension, a noncommunicable disease in which her blood pressure is higher than normal. What is the most likely explanation for why she is hypertensive?

A farmer has applied a pesticide to control a pest population that is affecting her crops. The pest population has reacted as shown below.Which best describes the process that the pest population has experienced due to this environmental change?

After having the chicken pox vaccine, Marta went to a party where someone had the chicken pox virus. Which best describes why Marta did not get chicken pox?

Which is a requirement for natural selection to occur?

Which type of process occurred in the ecosystem that was affected by the 1988 fires in Yellowstone Park, which destroyed most of the vegetation but left the soil intact?

A Russian citizen has illegally obtained a Siberian tiger and is trying to sell the tiger’s fur in the United States. What treaty does this violate?

Amelia’s doctor says that she has a tapeworm. Which type of medicine is prescribed to Amelia?

Which of the following examples can cause gene flow between populations?

What is the function of the hormone progesterone?

Aristo was riding in a car and noticed a pond that was covered in algal blooms due to excess phosphorus in the water. Which of these other features in the landscape could be the reason for the high levels of phosphorus?

This diagram illustrates the three types of plant tissue.Which main plant tissue are the lines pointing to in the enlarged diagram?

Consider the phylogenetic tree.Which pair of organisms is most closely related to primates?

The lava released by a volcanic eruption separates two populations of a species of monkey. What does this represent?

A scientist measured an increase in nitrous oxide in the atmosphere. This increase would result in

Before the beginning of the Industrial Revolution, most peppered moths found in and around Manchester, England, exhibited light-colored wings speckled with black. After the Industrial Revolution, peppered moths with dark wings became predominant in the area.Which term best describes the change from more light-colored moths to more dark-colored moths?

Fossils show how the complexity of living organisms has changed over time. Gerobatrachus hottoni was a unique organism that lived during the Permian period between ancient salamanders and ancient frogs. Scientists have nicknamed this organism the “frogamander” because it is believed to be a common ancestor of both modern frogs and salamanders.Which type of fossil is Gerobatrachus hottoni most likely to be?

Sophie says dolphins and sharks look very similar, so they must be related. Jake disagrees, saying DNA evidence has shown that dolphins and other aquatic mammals are actually more closely related to the ancestors of modern hippos. Who is correct using the modern system of classification?

Plant reproduction requires the presence of auxins, as well as a large amount of sugar for energy. Which two main plant tissues work together to release sugar and carry hormones so that reproduction can take place?