BIO 105 EXAM 1 PRACTICE QUESTIONS WITH DETAILED EXPLANATIONS 2026

BIO 105 EXAM 1 PRACTICE QUESTIONS WITH
DETAILED EXPLANATIONS 2026

◉ What type of bond holds together the parts of a water molecule?
Answer: Polar covalent bond


◉ What is the basic unit of structure and function of living things?
Answer: A cell


◉ If the most common form of Carbon has 6 protons, 6 neutrons,
and 6 electrons. Which elements would be an Isotope of carbon?
Answer: An atom with 6 protons, 8 neutrons, and 6 electrons


◉ The alpha helix and beta represent which level of protein
structure?
Answer: Secondary structure


◉ Which of these are not a lipid?
A. Phospholipid
B. Cholesteral
C. Estrogen
D. RNA

, Answer: D. RNA


◉ A hydrophilic molecule...
Answer: Will attract to polar molecule


◉ Which is the process of by which cells link monomers together to
form polymers and by doing this water is produced?
Answer: dehydration synthesis (dehydration reaction)


◉ A monosaccharide is to a carbohydrate as...
Answer: An amino acid to a protein


◉ A peptide bond is...
Answer: A covalent bond


◉ What determines the types of chemical reactions that an atom
participates in?
Answer: The number of electrons in the outermost shell


◉ What polysaccharide do plants use to store energy?
Answer: Starch