Cumulative Exam — Cumulative exam Answers

Drinking too much water during exercise can cause a condition in which the concentration of sodium in the blood is lower than normal. What immediate response would the blood cells have in this condition?

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

Red-green color blindness is an X-linked recessive disorder that is passed through generations and can be traced by using a pedigree. Which individuals in the pedigree are identified and labeled carriers for red-green color blindness?

Which is a requirement for natural selection to occur?

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

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?

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?

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?

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?

Unattached earlobes is a dominant trait, E. A parent who is homozygous for unattached earlobes is crossed with a parent who is homozygous for attached earlobes. Which describes the genotypes of their offspring?

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

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?

Which is most likely a source of air pollution?

Brendan made a diagram to compare and contrast the benefits of two types of social behavior.

Which lists the correct order of processes that occur as water moves from a pond to a cloud and then forms rain?

Which is a limiting nutrient for plant growth?

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

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?

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