SCHS Bio EOC Pt 1

What is the carrying capacity for the sheep population in the graph?

• 1.0 million

• 1.6 million

• 1.8 million

• 2.0 million

If a population grows larger than the carrying capacity of the environment, which of the following will occur?

• death rate may increase

• death rate must decrease

• birth rate may increase

• birth rate must decrease

Which of the following best explains the word evidence?

• Evidence is a sign which shows that something exists

• Evidence is someone else’s belief in a thing that happened.

• Evidence is a reason to believe that something happens for a reason.

• Evidence is a set of facts, data, or information used to support a point/claim.

Lauren wants to know which location in her apartment is best for growing African violets. She has three African violets. She puts one on the balcony, one by the kitchen window, and one on the mantel in the living room. Each plant has the same size pot and the same soil. Lauren also gives each plant the same amount of water. What is the independent variable in this experiment?

• The amount of water given

• The location the plants are placed

• How much the plants are growing

• The temperature of the water given

Which structures are found in all prokaryotic and eukaryotic cells?

• plasma/cell membrane, cytoplasm, and ribosomes

• plasma/cell membrane, nucleus, and DNA

• DNA, ribosomes, and cell wall

• plasma/cell membrane, cytoplasm, and nucleus

A normal human gestational period lasts forty weeks. Which of the following explains why the eighth week of gestation (length of pregnancy) is notable?

• The embryo stage ends and the fetal/fetus stage begins.

• The embryo is approximately the size of a lime.

• The gender of the fetus can be determined.

• Most organ systems are developed and functional.

What is the correct name for label E?

• Cerebellum

• Brain stem

• occipital lobe

• frontal lobe

An osmosis investigation was conducted using chicken eggs to represent cells with semipermeable membranes. The mass of each egg was measured to determine how much water diffused into or out of the eggs. The eggs were first soaked in vinegar to dissolve the shell. Each egg was then placed in one of three different solutions for 24 hours. The table below shows the results of the investigation.

Based on this experiment, which of the following should be inferred about cells with semipermeable membranes?

• Substances other than water may also cross the cell membrane.

• Substances other than water may block pores in the cell membrane.

• Water enters the cell when placed in environments of high water concentration.

• Water leaves the cell when placed in environments with a low concentration of solutes.

A new species of mouse is introduced into an environment. These mice reproduce and the population grows. As the population grows, food resources diminish and predation by hawks increases. Eventually, the number of mice in the environment levels off so that the rate of birth equals the rate of death. What is this nearly constant number of organisms called?

• carrying capacity

• exponential growth

• linear growth

• logistic capacity

The picture shows how carbon cycles through the environment. Which of the following statements is true?

• The removal of plants will decrease carbon dioxide in the atmosphere.

• The removal of plants will increase oxygen in the atmosphere.

• The removal of plants will increase carbon dioxide in the atmosphere.

• Plants have no effect on the carbon cycle