Practice Questions

(EOT Revision)

Practice Questions

Multiple Choice

Topic 1 : TOPIC 1: CHEMISTRY IN BIOLOGY

Which is the correct order of bond strength from weakest to strongest bond?

• Covalent Bonds, Ionic Bonds , Vander Waals Forces

• B. Covalent Bonds, Vander Waals Forces, Ionic Bonds

• Ionic Bonds, Covalent Bonds, Vander Waals Forces

• Vander Waals Forces, Covalent Bonds, Ionic Bonds

Multiple Choice

Where does a reactant bind to an enzyme during a chemical reaction?

• Active site

• Catalyst

• Product

• Substrate

Please remember

Multiple Choice

Which of the below is NOT a factor that affects enzyme activity?

• pH

• Light

• Temperature

• Enzyme concentration

Multiple Select

Select all of the statements that are true about enzymes.

• Are biological catalysts

• Increase the amount of product produced

• Function like a lock and key with specificity

• Get used up in a reaction, leaving none to be reused

Multiple Choice

What is the minimum/least amount of energy required/needed to form products in a chemical reaction?

• Energy input

• Reaction rate

• Energy transfer

• Activation energy

Multiple Choice

The elements or compounds that are made from a chemical reaction are_____.

• catalysts

• products

• reactants

• active sites

Don't forget :)

Multiple Choice

Chemical bonds that transfer electrons from one atom to another are called _____.

• ionic bonds

• hydrogen bonds

• covalent bonds

• Van der Waals bonds

Multiple Choice

Topic 2: 1.2 Water and Solutions

What is the ability of a solute to dissolve in a solvent?

• Polarity

• Solubility

• Homogeneity

• Concentration

Remember

Multiple Choice

In a solution that is buffered, what will happen to the pH if an acid is added?

• The pH will increase

• The pH will decrease

• The pH will not change

• All of the above are correct

• Buffers are mixtures that react with acids or bases to keep the pH within a specific range

Multiple Choice

Acids ______.

• release H+ ions in solution

• increase the number of water molecules

• take up OH- ions and become neutral

• both A and B are correct

Acids are substances that release H+ when dissolved in water

Bases are substances that release OH-when dissolved in water

Multiple Choice

A substance that produces or releases hydroxide (OH^-) ions in a solution is a(n) _____

• acid

• base

• buffer

• solute

Multiple Choice

A lemon has a pH of 2. It would be described as _____.

• acidic

• basic

• neutral

• natural

Remember :

PH scales 

Multiple Choice

Your blood has a pH around ____.

• 3

• 5

• 7

• 9

Multiple Choice

Topic 3 : The Building Blocks of Life

Which of the below is NOT a major biological macromolecule?

• lipid

• protein

• carbohydrate

• sodium chloride

Multiple Choice

Nucleotides are made of three parts: a phosphate group, a nitrogen base and a ____.

• lipid

• sugar

• glycerol

• Fatty acid

Remember:

The structure of the Nucleotide

Multiple Choice

The difference between the 20 amino acids is found in the _____.

• R group

• amino group

• carbon atoms

• carboxyl group

Multiple Choice

A triglyceride is unsaturated if it has _____.

• a hydrogen

• a nucleotide

• carboxyl group

• carbon-carbon double bonds

Remember :

saturated and unsaturated fat 

Multiple Choice

Which macromolecule is made of glycerol and fatty acids?

• Lipids

• Proteins

• Nucleic acids

• Carbohydrates

Multiple Select

Select all of the macromolecules that provide or store energy within organisms?

• Lipids

• B. Proteins

• Nucleic acids

• √Carbohydrates

Multiple Choice

The monomer of a carbohydrate is _____.

• a fatty acid

• a nucleic acid

• an amino acid

• a monosaccharide

Multiple Choice

ATP ___

• is an amino acid

• is a high energy nucleic acid

• gives enzymes for metabolism

• gives structural support to plants

Multiple Choice

Muscles, skin and hair are made of which macromolecule?

• Lipids

• Proteins

• Nucleic acids

• Carbohydrates

Multiple Choice

Topics 4 : CELLULAR STRUCTURE AND FUNCTION



What part of the microscope sharpens the image in view?

• Eyepiece

• Objective Lenses

• Fine Adjustment Knob

• Course Adjustment Knob

Multiple Choice

What is the magnification of the eyepiece on a compound light microscope?

• 4X

• 5X

• 10X

• 40X

Multiple Choice

When focusing a specimen, you should always start with which objective?

• Low power

• Medium power

• High power

• Any objective you choose

Multiple Choice

What is the basic unit of structure and function in all living things?

• Cell

• Organ

• Organism

• Tissue

Multiple Choice

Which of the following best distinguishes prokaryotes and eukaryotes?

• Prokaryotes do not have a membrane bound nucleus, but eukaryotes do

• Prokaryotes have a cell wall, but eukaryotes never do

• Prokaryotes have flagella, but eukaryotes do not

• Prokaryotes are much larger than eukaryotes

Multiple Select

The Plasma Membrane:

1. Select all of the statements that are true or correct about a hydrophilic group.

• A polar group

• Attracted to water

• Found at the end of phospholipids

• Is the opposite of a hydrophobic group

Multiple Choice

A phospholipid molecule has a head and two tails. The tails are found _____.

• at the surface of the membrane

• in the interior of the membrane

• where the environment is hydrophilic

• spanning the membrane

Remember that :

Multiple Choice

The fluid-mosaic model structure refers to _____.

• the mosaic pattern of phospholipids

• the lack of fluidity of internal membranes

• the fluidity of proteins and the patten of phospholipids

• the fluidity of phospholipids, cholesterol, carbohydrates and proteins

Multiple Choice

Which of the following is NOT a function of proteins present in the plasma membrane?

• Help with shape

• Help produce lipids

• Help transmit signals into the cell

• Help with movement of substances into and out of the cell

Don't forget that:

• Receptor proteins, on the outer surface, transmit signals into the cell

  
  

• Proteins on the interior surface, anchor the cell to internal support (cytoskeleton) helping with shape

  
  

• Transport proteins, span the entire membrane creating a channel for substances to enter and leave the cell; helping with selective permeability.

Multiple Select

The carbohydrates on the plasma membrane are involved in _____ and _____. (Select two functions)

• adhesion between cells

• reception of molecules

• cell-to-cell recognition

• identification of chemical signals

Multiple Choice

Structures and Organelles:

Which of the below organelles are found in plant cells, but not in animal cells?

• Cell wall, chloroplast and large vacuole

• Cell wall, plasma membrane and flagellum

• Rough endoplasmic reticulum, centriole and lysosome

• Rough endoplasmic reticulum, nucleolus and large vacuole

Multiple Choice

Cellular Transport:

During diffusion, _____.

• a cell must be present for any molecules to move

• molecules move against their concentration gradient

• molecules move from the area of higher to lower concentration

• solvents move from the area of high concentration to low

  concentration, but solutes do not

Multiple Choice

Active transport _____

• requires energy

• requires a transport protein or protein pump

• moves molecules against the concentration gradient

• all of the above are correct

Multiple Choice

When a cell is placed in a hypotonic solution, _____.

• solute exits the cell to equalize the concentration on both sides

  of the membrane

• water enters the cell toward the area of higher solute concentration

• water exits the cell toward to area of lower solute concentration

• solute and water enters the cell

Remember :

Multiple Choice

What process do cells use to get large substances inside the cell?

• Osmosis

• Diffusion

• Exocytosis

• Endocytosis

Multiple Choice

Roots, Stems and Leaves:

Which plant structure is NOT a part of a root?

• Stomata

• Root cap

• Pericycle

• Endodermis

Multiple Choice

Which of the below is NOT a function of roots?

• Anchor the plant

• Store food for the plant

• Absorb water and nutrients

• Increase the length of the stems

Multiple Choice

How are compound leaves different from simple leaves?

• Simple leaves have an opposite leaf arrangement, compound leaves

  have whorled and alternate

• Simple leaves have parallel venation, compound have palmate

• Compound leaves are smaller than simple leaves

• Simple leaves are smaller than compound leaves

Multiple Select

Plant Cells and Tissues:

Select all of the functions of the parenchyma cells in plants.

• Storage

• Protection

• Photosynthesis

• Gas Exchange

Multiple Choice

Which plant cell type is very strong and flexible?

• Collenchyma

• Parenchyma

• Sclerenchyma

Multiple Choice

Which of the following types of tissues is made of vessel elements and tracheids?

• Epidermal

• Ground

• Phloem

• Xylem

Multiple Choice

Which type of tissue allows the movement of water and nutrients throughout the plant?

• Dermal tissue

• Ground tissue

• Vascular tissue

• Meristematic tissue

Multiple Choice

Which meristematic tissue is responsible for continued growth of plants after being cut or trimmed, like

grass and bushes?

• Apical meristem

• Floral meristem

• Intercalary meristem

• Lateral meristem

Multiple Choice

Which of the following DOES NOT match?

• Ground tissue—photosynthesis

• Vascular tissue—storage

• Dermal tissue— plant covering

• Meristematic tissue—produce new cells

Multiple Choice

From the table above, which hormone is NOT active when plants are flowering and producing fruits?

• Abscisic Acid

• Auxin

• Cytokinin

• Ethylene

Multiple Choice

In labs, _____ is added to plant tissues to speed up the growth for faster experimental processes.

• abscisic acid

• auxin

• cytokinin

• ethylene

Multiple Choice

Identify the type of tropism shown in the picture below.

• Chemotropism

• Gravitropism

• Phototropism

• Thigmotropism