Lab Modules

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The molecule that gains an electron when forming an ionic bond becomes a cation.

False

All atoms contain at least one neutron.

False.

The light-independent reactions convert carbon dioxide to:

Glucose

What color is not absorbed by chlorophyll?

Green

During a reaction, a molecule is present that binds to the same activation site on an enzyme as the reactant, thereby reducing the amount of product formed. What type of molecule is present?

A competitive inhibitor

Which of the following does NOT impact membrane permeability?

ATP Availability

Which of the following is NOT true about carotenoids?

Beta carotine is a yellow pigment (Its like orange lmao)

Which of the following are inorganic molecules?

Carbon Dioxide (CO2) and Water (H2O)

How does environmental pH affect reaction rate?

Changes in pH alter the activation site, the structure of the enzyme, and the ionization status of the enzyme

Which of the following gives plants their characteristic green appearance?

Chlorophyll

Activators are a type of

Cofactor

Which type of chemical bond shares electrons?

Covalent

Catalysts increase the activation energy of a reaction.

False

Which of the following properties is typical of an ionic bond?

Electrically conductive, higher melting/boiling point

Catalase, polymerase, and amylase are all examples of what type of molecule?

Enzymes

Active transport moves molecules from areas of high concentration to low concentration using ATP.

False

An enzyme binds to an active site on the substrate

False

C2H4O2 is an inorganic molecule

False

Which of the following describes hydrogen bonding?

Interactions between positive and negative regions of polar molecules.

Atoms of the same element with different numbers of neutrons are called:

Isotopes

Which organ would require a large number of aquaporins?

Kidney

What are the reactants involved in photosynthesis?

Light Energy, Carbon Dioxide, Water

What type of macromolecules is often referred to as a fat?

Lipids

How does membrane permeability change with concentration?

Membrane permeability increases as concentration decreases.

Identify the units used to define molarity

Moles/Liter

What of the following subatomic particles are found in the nucleus?

Neutrons and Protons

Which of the following does not affect enzyme selectivity? Molecular Shape Hydrophilic Interactions Electrostatic Interactions None of the above

None of the above

Thymine, cytosine, and adenine can be found in what macromolecule?

Nucleic Acids

What is the difference between diffusion and osmosis.

Osmosis refers to water molecules, whereas diffusion refers to any molecule

Which type of covalent bond is the result of unequal sharing of electrons?

Polar

What term describes the ratio of the distance of the analytes travel relative to the distance of the eluting solvent during paper chromatography?

Retention Factor (Rf)

Which hypothesis for why plants roots are not green seems most likely?

Roots serve the function of absorbing water and nutrients and anchoring plants to the ground. therefore, the chlorophyll that absorbs sunlight is reduced.

Through what mechanism do enzymes increase the breakdown of substrates into products?

The activation energy of the reaction is lowered when the enzyme is present.

What information is NOT required to calculate molarity?

The number of moles of solvent.

Why are aquaporins important in some tissues?

They facilitate movement of water molecules when osmosis alone is not sufficient.

Which nucleotide is not found in DNA?

Uracil

What would happen to a cell placed in a hypertonic solution?

Water would leave the cell, causing it to shrink

Stacks of thylakoids are called

grana

Hemoglobin would be classified as a:

protein


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