Biology Basics Exam 1

Question 1

A mutat' occurs tht changes a hydrophilic AminoAcid to a hydrophobic 1. What is the most likely impact on the proteins?

Accepted Answer

The protein may misfold and lose its function

Question 2

Which organic molecule contains nitrogen?

Accepted Answer

Protein

Question 3

What is the function of the mitochondria?

Accepted Answer

Energy production (ATP)

Question 4

What is the role of buffers in the body?

Accepted Answer

Maintain stable pH by absorbing or releasing H⁺ ions

Question 5

What makes water a good solvent?

Accepted Answer

It is polar and forms hydrogen bonds

Question 6

The atomic number of an atom is determined by the number of:

Accepted Answer

Protons

Question 7

A cell is placed in a solution and begins to swell until it bursts. What can you conclude about the solution?

Accepted Answer

It is hypotonic to the cell

Question 8

Isotopes differ from regular atoms because they have different:

Accepted Answer

Neutron numbers

Question 9

The process of building a polymer by removing water is:

Accepted Answer

Dehydration synthesis

Question 10

Prokaryotic cells differ from eukaryotic cells in that they:

Accepted Answer

Lack membrane-bound organelles

Question 11

Active transport differs from passive transport because it:

Accepted Answer

Requires energy (ATP)

Question 12

Which of the following best describes a scientific theory?

Accepted Answer

A broad, reliable explanation supported by extensive evidence

Question 13

Which of the following organelles packages proteins for export?

Accepted Answer

Golgi apparatus

Question 14

What is the function of recognition proteins?

Accepted Answer

Identifying cells

Question 15

Which best describes facilitated diffusion?

Accepted Answer

Passive transport using channel or carrier proteins

Question 16

Osmosis is:

Accepted Answer

The diffusion of water across a membrane

Question 17

Which of the following molecules would easily pass through the phospholipid bilayer of a cell membrane w/o assistance?

Accepted Answer

O₂ (oxygen gas)

Question 18

Which is NOT a type of lipid?

Accepted Answer

Enzyme

Question 19

A new substance is found to easily dissolve in water and forms hydrogen bonds. Which classification best describes it?

Accepted Answer

Hydrophilic and polar

Question 20

Which of the following is a polymer of glucose?

Accepted Answer

All of the above

Question 21

What is true about all living organisms?

Accepted Answer

All of the above

Question 22

Which structure contains digestive enzymes to break down waste?

Accepted Answer

Lysosome

Question 23

Which of the following molecules is hydrophobic?

Accepted Answer

Oil

Question 24

Which type of bond involves the sharing of electron pairs?

Accepted Answer

Covalent

Question 25

A red blood cell placed in a hypertonic solution will:

Accepted Answer

Shrivel

Question 26

The plasma membrane is made primarily of:

Accepted Answer

Phospholipids and proteins

Question 27

What does the “fluid mosaic” model describe?

Accepted Answer

Proteins moving in a phospholipid bilayer

Question 28

The subunits of proteins are:

Accepted Answer

Amino Acids

Question 29

A pt receives an IV solution with a high concen. of solutes. Which effect is most likely to occur in their rbc's?

Accepted Answer

Water will leave the cells, causing them to shrink

Question 30

Which of the following correctly sequences the scientific method?

Accepted Answer

Observation → Question → Hypothesis → Prediction → Experiment → Conclusion

Biology Basics Exam 1

Questions 30

Biology Basics Exam 1

Questions 30