QUIZ
Biochemistry
2 years ago by
24 questions
Q. Glucose is a _____.
answer choices
carbohydrate
lipid
protein 
nucleic acid
Q. Proteins are composed of what smaller building blocks?
answer choices
amino acids
nucleic acids
fatty acids
nucleotides
Q. Which group of organic molecules serve as long-term energy storage and make the cell membrane is?
answer choices
proteins
carbohydrates
lipids
nucleic acids
Q. The primary purpose the body uses monosaccharides for is?
answer choices
Building muscles
Helping the Immune System
Immediate Energy
Generating Heat
Q. Also known as simple sugars, these are the monomers of carbohydrates.
answer choices
lipids
nucleotide
monosaccharide
monomer
Q. Building blocks of polymers.
answer choices
monomer
polypeptide
monosaccharide
glycerol
Q. Based on the graph, what temperature does this enzyme work best? 
answer choices
15 C
40 C
30 C
Q. Which of the following binds to the active site of an enzyme? 
answer choices
substrate
product
codon
none of the above
Q. Letter D...
answer choices
active site
enzyme
substrate
products
Q. Letter C...
answer choices
active site
enzymes
substrate
products
Q. Enzymes are
answer choices
nucleic acids
proteins
lipids
carbohydrates
Q. Which of the following is NOT a biomolecule?
answer choices
Water
Nucleic Acid
Protein
Lipid
Q. Identify the biomolecule
answer choices
Lipid
Protein
Carbohydrate
Nucleic Acid
Q. Enzymes are _________ that __________ chemical reactions.
answer choices
proteins, slow down
proteins, speed up
lipids, slow down
lipids, speed up
Q. What is the DEPENDENT variable (effect) in this experiment?
"Do tall people jump further than short people?"
answer choices
height of the person
weight of the person
how fast the person runs
how far the person jumps
Q. What is the INDEPENDENT variable (cause)in this experiment?
"Which type of metal, copper or aluminum, conducts heat faster?" 
answer choices
size of metal
types of metal
time it takes to heat up
shape of the metal
Q.

A cow is given a growth hormone and then compared to another cow that was not given a growth hormone. Both cows were weighed at 2 years. What is the independent variable in this scenario?

answer choices

growth hormone

weight of cow

cows

Q.

A cow is given a growth hormone and then compared to another cow that was not given a growth hormone. Both cows were weighed at 2 years. What is the dependent variable in this scenario?

answer choices

growth hormone

weight of cow

cows

Q.

Mosquito repellent is sprayed on one arm and the other arm is not sprayed. The number of mosquito bites is counted after 2 hours. What is the independent variable?

answer choices

mosquito bites

repellant

2 hours

Q.

One grape is placed in tap water and another grape is placed in salt water. The change in their mass is measured after a day. What is the dependent variable?

answer choices

salt water

mass of grapes

type of water

type of grapes

Q.

A stapler is used to staple 100 papers, it jams 5 times during the trial. A different brand of stapler performs the same test; it jams 22 times. What things should be kept constant in this experiment? Select all that apply.

answer choices

brand of stapler

person using the staplers

type of paper being stapled

brand of staples

Q.

For the science fair, Tina asks the question “Does caffeine increase the heart rate of an earthworm?” In Test 1, she measures the heart rate by looking at the earthworm under a microscopes, the earthworm has a heart rate of 50 bpm (beats per minute). In Test 2, she places a few drops of caffeine on the earthworm’s skin and measures the rate again. In this test, the heart rate is 68 bpm. What is the manipulated (independent) variable in this experiment?

answer choices

caffeine

heart rate (bpm)

earthworm

microscope

Q.

For the science fair, Tina asks the question “Does caffeine increase the heart rate of an earthworm?” In Test 1, she measures the heart rate by looking at the earthworm under a microscopes, the earthworm has a heart rate of 50 bpm (beats per minute). In Test 2, she places a few drops of caffeine on the earthworm’s skin and measures the rate again. In this test, the heart rate is 68 bpm. What is the responding (dependent) variable in this experiment?

answer choices

caffeine

heart rate (bpm)

earthworm

microscope

Q.

For the science fair, Tina asks the question “Does caffeine increase the heart rate of an earthworm?” In Test 1, she measures the heart rate by looking at the earthworm under a microscopes, the earthworm has a heart rate of 50 bpm (beats per minute). In Test 2, she places a few drops of caffeine on the earthworm’s skin and measures the rate again. In this test, the heart rate is 68 bpm. Which of the following statements could have been a hypothesis for this experiment?

answer choices

If an earthworm is given caffeine, then its heart rate will increase.

If an earthworm's heart rate increases, then it should not be given caffeine.

A larger earthworm will have a higher heart rate because of caffeine.

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