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WorksheetsIB Bio Unit 3: Biochemistry
Total questions: 16
Worksheet time: 9mins
What type of bond do oxygen and hydrogen form with one another within one water molecule?
Hydrogen bond
Nonpolar covalent bond
Polar covalent bond
Ionic bond
Which of the following bonds is uncharged?
Polar covalent bond
Hydrogen bond
Nonpolar covalent bond
Ionic bond
What type of bonds do water molecules form with one another, leading to water's unusual properties?
Hydrogen bonds
Nonpolar covalent bonds
Polar covalent bonds
Ionic bonds
Why does ice float on water?
Decreased hydrogen bonding leads to an increase in density
Decreased hydrogen bonding leads to a decrease in density
Increased hydrogen bonding leads to an increase in density
Increased hydrogen bonding leads to a decrease in density
What property allows water to "stick" to itself, causing high surface tension?
Adhesion
Cohesion
Capillary action
Specific heat
What type of substances does water dissolve easily?
Hydrophilic
Hydrophobic
Polar
Nonpolar
How many covalent bonds can carbon form with other atoms?
2
1
3
4
What are the monomers of carbohydrates called?
Amino acids
Polysaccharides
Monosaccharides
Fatty acids
What reaction joins monomers to form polymers?
Hydrolysis
Cellular respiration
Catabolism
Dehydration synthesis
What type of bond is formed between monosaccharides?
glycosidic bond
peptide bond
ester bond
hydrogen bond
This functional group consists of an O-H and is found frequently in carbohydrates.
Methyl group
Sulfhydryl group
Hydroxyl group
Carboxyl group
This functional group makes up one "end" of the amino acid backbone.
Ketone
Amino group
Aldehyde
Methyl
A triglyceride is made up of 3 fatty acid chains and a:
Phosphate group
Amino group
Glycerol
Disaccharide
How many C-C double bonds might a polyunsaturated fat have?
None
1
3
Which type of fat has hydrogens on different sides of the C-C double bond?
Saturated fat
Cis fat (unsaturated)
Trans fat (unsaturated)
What do saturated fats and trans fats have in common?
Angled chains due to C-C double bonds
Straight chains which leads to "stackability"
Both increase LDL (harmful cholesterol) in the bloodstream
Both make your heart healthier
