1 DOM · 101 DOIB
DNA
P Geneva College · Online Education
AFFORDABLE, ACCREDITED, ACCESSIBLE · SINCE 2014
EST. 2014
BIOD 101 · Module 1 Exam
F O U N D AT I O N S O F B I O LO G Y — C H E M I ST R Y, C E L LS & TA XO N O M Y
INSTITUTION Portage Learning / Geneva College COURSE CODE BIOD 101
PROGRAM Pre-Nursing / Health Sciences ACADEMIC YEAR
EXAM TITLE Module 1 — Comprehensive Review TOTAL QUESTIONS 60+ Questions
COURSE TITLE Biology 101 — Foundations of Life FORMAT Multiple Choice / True/False / Matching
EXAMINATION INSTRUCTIONS
▸ Select the single best answer for each question.
▸ Content covers chemistry, macromolecules, cell biology, and taxonomy.
COMPREHENSIVE BIOLOGY REVIEW Questions 1 – 60+
1. What is matter?
A. Only solid substances with fixed shape.
B. Anything that takes up space, has volume, and has mass.
C. Pure energy.
D. Only living tissue.
CORRECT ANSWER B — Anything that takes up space, has volume, and has mass.
RATIONALE Matter is defined as anything that occupies space (volume) and has mass. It exists in solid, liquid, or gaseous
states.
2. Match the following protein structures with the correct description: Primary structure.
A. Three-dimensional folded shape.
B. Order in which amino acids are arranged in a polypeptide chain.
C. Interaction of multiple polypeptide chains.
D. Alpha helices and beta pleated sheets.
CORRECT ANSWER B — Order in which amino acids are arranged in a polypeptide chain.
RATIONALE Primary structure is the linear sequence of amino acids determined by DNA. Secondary = repeating patterns
(alpha helix, beta sheet). Tertiary = 3D folding. Quaternary = multiple polypeptide chains interacting.
, 3. Selective permeability refers to:
A. All substances passing freely through the membrane.
B. Ability of certain substances to move through the cell membrane while others cannot.
C. Only water moving across the membrane.
D. Active transport of all molecules.
CORRECT ANSWER B — Ability of certain substances to move through the cell membrane while others cannot.
RATIONALE The plasma membrane is selectively permeable: small nonpolar molecules pass freely; polar molecules and
ions require transport proteins.
4. What type of lipid is made up of four fused carbon rings with attached functional groups that often contain an
alcohol?
A. Triglyceride.
B. Phospholipid.
C. Steroids.
D. Wax.
CORRECT ANSWER C — Steroids.
RATIONALE Steroids (cholesterol, estrogen, testosterone) share a four-fused-ring carbon skeleton. Cholesterol has an -OH
(alcohol) functional group.
5. What type of ion carries a negative charge?
A. Cation.
B. Anion.
C. Proton.
D. Isotope.
CORRECT ANSWER B — Anion.
RATIONALE Anions are negatively charged ions (e.g., Cl⁻, OH⁻). Cations are positively charged (e.g., Na⁺, K⁺).
6. Which organelle contains the genomic content and serves as the control center of the cell?
A. Mitochondria.
B. Nucleus.
C. Golgi apparatus.
D. Ribosome.
CORRECT ANSWER B — Nucleus.
RATIONALE The nucleus houses the cell's DNA, controls gene expression, and directs cellular activities.
7. True or False: Passive transport is vital for moving essential nutrients into the cell.
A. True.
B. False. Active transport is vital for moving essential nutrients.
CORRECT ANSWER B — False. Active transport is vital for moving essential nutrients into the cell.
RATIONALE Most nutrients (glucose, amino acids) move against their concentration gradient and require active transport
(ATP). Passive transport cannot move these essential nutrients against gradients.