Introduction to Biology

The area of science that studies life and its processes is called:

All living organisms are ___________:

A) Eukaryotic.

B) Animals.

C) Multicellular.

D) Either uni- or multi-cellular.

All of the following are characteristics of life EXCEPT:

Salt concentration in blood remains relatively steady, regardless of a person’s diet. This best illustrates:

Which of the following options has the correct order in terms of the hierarchy of the organization?

Use the word bank to complete the pyramid of life’s organizational hierarchy below.

Word Bank:
Population
Organelles
Organ System
Cell
Tissues
Ecosystem
Organ
Community
Molecules
Multicellular Organism

Which of the following is the best example of an emergent property?

At which point of the organizational hierarchy does life emerge?

Which of the following is true of natural selection?

Evolution through natural selection will occur most rapidly for populations of plants that:

Charles Darwin’s theory of evolution by natural selection explains all of the following EXCEPT:

Which branch of biology is concerned with the naming and classifying of organisms?

Biologists can divide living organisms into two groups: autotrophs and heterotrophs, which differ in _________.

Which of the following shows the best order of steps of the scientific method?

A scientist observes that even after sterilizing a broth, cells reappear in the broth over time. The scientist then asks: “Why do cells reappear in the broth after sterilization?” and designs/conducts an experiment. Considering this, appropriately label each of the following blanks as either a “prediction, hypothesis or theory.”

________________: Cells will only appear in the broth exposed to a source of preexisting cells.

________________: Cells appear only when preexisting cells grow & divide; therefore, cells only appear in exposed broths.

________________: All organisms consist of cells & all cells come from preexisting cells.

Which of the following statements about the cell theory is false?

Jonathan wants to know which style/model of paper airplane is going to win the contest by traveling the furthest. He designs 5 different models of paper airplanes and drops each of them from the same height of 20 meters. He records the distance that each plane travels before it hits the ground. What are the independent and dependent variables of Jonathan’s experiment?

            Independent Variable: ______________________________________ 

            Dependent Variable: _______________________________________

In an experiment to test the effect of temperature bacterial reproduction rate, temperature would be the:

The temperature at which an alligator's egg is incubated will determine the sex of the offspring. The dependent and the independent variables in this experiment are ________.

A scientist wants to study the effects of nitrogen on wheat plants. They set up an experiment with 4 groups of plants: group A gets 20 pounds of nitrogen per acre, group B gets 40 pounds per acre, group C gets 60 pounds per acre, and group D gets 0 pounds per acre. Which of the following is the control group? Is it a positive or negative control group?