Worksheets2nd Quarter (Biology)
Total questions: 39
Worksheet time: 20mins
Organic molecules that contain carbon and other elements such as hydrogen, oxygen, nitrogen, phosphorus, and sulfur.
Proteins
Biomolecules
Nucleotides
Lipids
The simplest form of carbohydrates, consisting of 3–7 carbons with one aldehyde or ketone group.
Lipids
Monosaccharides
Polysaccharides
Disaccharides
A carbohydrate formed by the combination of glucose and galactose, commonly found in milk.
Maltose
Starch
Lactose
Sucrose
A polysaccharide that is the main storage form of energy in plants.
Fructose
Glycogen
Cellulose
Starch
A large biomolecule made up of amino acids linked together in a specific sequence.
Polysaccharides
Lipids
Proteins
Nucleic acids
The structure of a protein that resembles a coiled spring.
Quaternary structure
Tertiary structure
Secondary structure
Primary structure
A type of fat commonly found in plants, such as vegetable oil and corn oil.
Animal fat
Saturated fat
Unsaturated fat
Trans fat
The monomer of nucleic acids, consisting of a pentose sugar, nitrogenous base, and phosphate group.
Glucose
Fatty acid
Nucleotide
Amino acid
The biomolecule responsible for storing genetic information.
Carbohydrates
Proteins
Nucleic acids
Lipids
The type of bond that links nucleotides together in nucleic acids.
Hydrogen bond
Phosphodiester bond
Peptide bond
Glycosidic bond
A monosaccharide found in honey, used as a natural sweetener.
Glucose
Maltose
Fructose
Galactose
A polysaccharide exclusively found in plants, which serves as a dietary fiber.
Maltose
Cellulose
Glycogen
Starch
The biomolecule that prevents water loss from the skin and acts as insulation.
Nucleic acids
Carbohydrates
Proteins
Lipids
The type of protein structure that involves several protein chains packed together.
Quaternary structure
Tertiary structure
Secondary structure
Primary structure
A carbohydrate formed by the combination of two glucose molecules, commonly found in malted cereals.
Cellulose
Maltose
Sucrose
Lactose
Where does glycolysis occur in the cell?
Ribosome
Nucleus
Cytoplasm
Mitochondria
What is the main product of glycolysis?
Acetyl-CoA
Pyruvate
Fructose-6-phosphate
Glucose-6-phosphate
Which phase of glycolysis uses two molecules of ATP?
Reduction phase
Payoff phase
Investment phase
Oxidative phase
Glycolysis occurs in which types of respiration?
Neither
Both aerobic and anaerobic respiration
Anaerobic respiration only
Aerobic respiration only
During the payoff phase of glycolysis, how many ATP molecules are gained?
6 ATP
4 ATP
2 ATP
1 ATP
Where does the Krebs Cycle occur?
Nucleus
Ribosome
Mitochondrial matrix
Cytoplasm
Which of the following is a final output of the Krebs Cycle?
Glucose
NADH, FADH2, and ATP
Pyruvate
Oxygen
In Krebs Cycle, which step produces FADH2?
Step 8
Step 5
Step 6
Step 4
What is another name for the Krebs Cycle?
Electron Transport Chain
Citric Acid Cycle
Glycolysis Cycle
Oxidative Phosphorylation Cycle
Where does oxidative phosphorylation occur?
Mitochondrial matrix
Outer mitochondrial membrane
Inner mitochondrial membrane
Cytoplasm
What is the primary function of the electron transport chain?
Produce carbon dioxide
Generate pyruvate
Pump protons and transfer electrons
Break down glucose
What molecules deliver electrons to the electron transport chain?
Oxygen and glucose
ATP and H2O
NADH and FADH2
NAD+ and ADP
What is the final electron acceptor in the electron transport chain?
NADH
Oxygen
Ubiquinone
Carbon dioxide
Which complex does NADH initially interact with in the electron transport chain?
Complex IV
Complex III
Complex II
Complex I
In the Electron Transport Chain, what is the role of Complex II?
It generates water
It accepts electrons from FADH2
It accepts electrons from NADH
It pumps protons into the mitochondrial matrix
Which molecule passes electrons from Complex I to Complex III?
ATP
Ubiquinone (Q)
Oxygen
Cytochrome C
What is the role of Complex III in the electron transport chain?
Synthesizes NADH
Pumps oxygen
Produces ATP
Transfers electrons to Cytochrome C
In the Electron Transport Chain, what happens at Complex IV?
Protons are pumped to the matrix
ATP is synthesized
Electrons combine with oxygen and protons to form water
FADH2 is converted to FAD
What molecule acts as an electron carrier between Complex III and Complex IV?
Cytochrome C
Ubiquinone
ATP Synthase
NADH
What is chemiosmosis?
The splitting of water to produce oxygen
The movement of protons through ATP synthase
Electron transfer through Complexes I-IV
Proton pumping across the mitochondrial membrane
What drives protons through ATP synthase?
Breakdown of oxygen
Proton concentration gradient and electric force
Electron force
NADH oxidation
What is the result of chemiosmosis?
Electron transport
FADH2 reduction
ATP synthesis
NADH production
What happens to ADP and phosphate ions during oxidative phosphorylation?
They are converted into NADH
They combine to produce ATP
They are broken down to produce ATP
They are transferred into the cytoplasm
Which two processes together make up oxidative phosphorylation?
NADH Production and Proton Pumping
Citric Acid Cycle and ATP Synthase
Electron Transport Chain and Chemiosmosis
Glycolysis and Krebs Cycle
