Biology Final Exam Review Fall Semester

Cells in multicellular organisms have many different sizes and shapes. These differences in cells is called cell specialization. Cell specialization allows cells to

• reproduce

• perform different functions

• respond to their environment

• be less complex

Would a scientist who studies evolution also have to learn about other branches of biology. Why or why not?

• Yes, the other branches of biology are more important

• yes, the different branches of biology are interrelated

• no, the other branches of biology do not affect evolution

• no, each branch of biology is separate from the others

What is the smallest object that biologists study?

• cells

• body organs

• molecules

• organisms

Science is best described as a

• set of facts

• collection of beliefs

• list of rules

• way of knowing

The work of scientists usually begins with

• testing a hypothesis

• careful observations

• drawing conclusions

• creating experiments

Suppose a scientist proposes a hypothesis about how a newly discovered virus affects humans. Other virus researchers would likely

• change the hypothesis to fit their own findings

• reject the hypothesis right away

• design new experiments to test the proposed hypothesis

• assume that the hypothesis is true for all viruses

Which of the following characteristics of living things best explains why some North American birds fly south for the winter?

• living things maintain internal balance

• living things are based on a universal genetic code

• living things respond to their environment

• living things are made up of units called cells

Which of the following is a substance formed by the chemical joining of two ore more elements in definite amounts?

• compound

• nucleus

• isotope

• enzyme

In a water molecule, shared electrons spend more time around the oxygen atom than the hydrogen atoms. As a result, the oxygen atom is

• positive

• slightly positive

• negative

• slightly negative

Which of the following is not a monomer

• nucleic acid

• amino acid

• glucose

• nucleotide