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Biology Practice test 1 2025- 2026 Review GRADED A+ QUESTIONS WIT H
CORRECT ANSWERS GRADED A+
Biology Biochemistry Test
Sucrose is a disaccharide, meaning what?
Its a double sugar made by dehydration synthesis of two monosaccharides
What is the common name of sucrose?
Table sugar
Why does sucrose taste so sweet?
Because it is both glucose and fructose sugar making it even more sweet
What process would form a disaccharide from two monosaccharides?
dehydration synthesis
What process would split a disaccharide into two monosaccharides?
Hydrolysis reaction
Americans are eating way too much sugar. State several problems with eating
too much sugar?
You can get heart disease, weight gain, type 2 diabetes
What do you call a carbohydrate made of many sugars?
polysaccharide
What is a major component of plant cell walls
cellulose
What is a major source of stored energy in liver and muscle
glycogen
What is also known as animal starch
glycogen
What is the main way that plants store excess energy
starch
What is also known as fiber because humans can't digest it
cellulose
What is highly branched so can quickly be broken into glucose
glycogen
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What sugar is the monomer for all polysaccharides
glucose
Identify each of the polysaccharides shown below.
starch, glycogen, cellulose
What is the main characteristic of all lipids?
They are hydophobic
What two substances make up triglycerides (fats & oils)?
Glycerol and three (3) fatty acids.
State three functions of fats or triglycerides.
Provide energy storage, cushion internal organs, and provide insulation.
Structurally how does a saturated and unsaturated fat differ?
Saturated fats have single covalent bonds and unsaturated fats contain one or
more double bonds.
What characteristic separates fats from oils?
Oils are liquids at room temperature and fats are solids at room temperature.
What does the term "polyunsaturated" mean?
An organic compound that contains several double bonds or triple bonds
between carbon atoms.
What does the term "polyunsaturated" mean?
An organic compound that contains several double bonds or triple bonds
between carbon atoms.
Some steroids are hormones. What do hormones do?
Gives masculine or feminine characteristics
What is the male steroid hormone?
Testosterone
What steroid causes hardening of arteries & heart attacks?
Cholesterol
How is cholesterol beneficial and necessary?
Cholesterol is used in cell membranes to make the membranes flexible.
Identify the following structures as a saturated fat, an unsaturated fat, a
steroid, or a triglyceride (note:
the answer can be more than one!)
1. Saturated Fat (triglyceride) 2. Steroid 3. Unsaturated fat (triglyceride)
What is the function of DNA? Of RNA?
Biology Practice test 1 2025- 2026 Review GRADED A+ QUESTIONS WIT H
CORRECT ANSWERS GRADED A+
Biology Biochemistry Test
Sucrose is a disaccharide, meaning what?
Its a double sugar made by dehydration synthesis of two monosaccharides
What is the common name of sucrose?
Table sugar
Why does sucrose taste so sweet?
Because it is both glucose and fructose sugar making it even more sweet
What process would form a disaccharide from two monosaccharides?
dehydration synthesis
What process would split a disaccharide into two monosaccharides?
Hydrolysis reaction
Americans are eating way too much sugar. State several problems with eating
too much sugar?
You can get heart disease, weight gain, type 2 diabetes
What do you call a carbohydrate made of many sugars?
polysaccharide
What is a major component of plant cell walls
cellulose
What is a major source of stored energy in liver and muscle
glycogen
What is also known as animal starch
glycogen
What is the main way that plants store excess energy
starch
What is also known as fiber because humans can't digest it
cellulose
What is highly branched so can quickly be broken into glucose
glycogen
, Page 2 of 6
What sugar is the monomer for all polysaccharides
glucose
Identify each of the polysaccharides shown below.
starch, glycogen, cellulose
What is the main characteristic of all lipids?
They are hydophobic
What two substances make up triglycerides (fats & oils)?
Glycerol and three (3) fatty acids.
State three functions of fats or triglycerides.
Provide energy storage, cushion internal organs, and provide insulation.
Structurally how does a saturated and unsaturated fat differ?
Saturated fats have single covalent bonds and unsaturated fats contain one or
more double bonds.
What characteristic separates fats from oils?
Oils are liquids at room temperature and fats are solids at room temperature.
What does the term "polyunsaturated" mean?
An organic compound that contains several double bonds or triple bonds
between carbon atoms.
What does the term "polyunsaturated" mean?
An organic compound that contains several double bonds or triple bonds
between carbon atoms.
Some steroids are hormones. What do hormones do?
Gives masculine or feminine characteristics
What is the male steroid hormone?
Testosterone
What steroid causes hardening of arteries & heart attacks?
Cholesterol
How is cholesterol beneficial and necessary?
Cholesterol is used in cell membranes to make the membranes flexible.
Identify the following structures as a saturated fat, an unsaturated fat, a
steroid, or a triglyceride (note:
the answer can be more than one!)
1. Saturated Fat (triglyceride) 2. Steroid 3. Unsaturated fat (triglyceride)
What is the function of DNA? Of RNA?
