Which of the following compounds is a component of cell membranes?

a) nucleic acids

b) proteins

c) cellulose

d) water

The cell membrane is best described as

a) impermeable

b) permeable.

c) selectively permeable.

d) opaque.

Animal cells may contain all of the following organelles except

a) ribosomes

b) endoplasmic reticulum

c) mitochondria

d) lysosomes

e) plastids.

In which type of cell would you find the fewest mitochondria?

a) muscle

b) nerve

c) digestive

d) adipose

e) all cells have the same number of mitochondria

The organelle responsible for storage and packaging of proteins is the

a) nucleusb) vesiclec) ribosomed) Golgi apparatuse) endoplasmic reticulum.

The main function of vesicles within the cell is

a) maintaining turgor

b) transport.

c) endocytosis

d) protein synthesis

Lysosomes are formed by the

a) Golgi apparatus

b) ribosomes

c) nucleus

d) vacuoles

e) mitochondria

Microfilaments

a) provide shape and movement for cells

b) transport materials throughout the cytoplasm

c) convert chemical energy to electrical energy

d) are artificial structures produced using nanotechnology

e) none of the above

Microtubulesa) provide shape and movement for cellsb) transport materials throughout the

cytoplasmc) convert chemical energy to electrical

energyd) are artificial structures produced using

nanotechnologye) none of the above.

Animal cells are not able to produce sugars because they lack

a) a.Golgi apparatusb) amyloplastsc) mitochondriad) chromoplastse) chloroplasts

What was the key element of Pasteur’s apparatus that enabled his experiment to gain wide acceptance as proof for biogenesis?

a) The broth was only boiled for a short time hence preserving the vital principle

b) The S-Shaped tube allowed air into the broth

c) The broth contained no bacteria from the start

d) The plug in the tube kept microorganisms out

During the 1800’s, there was much exploration of cells using the microscope.  Although biogenesis seemed obvious, many scientists still maintained their beliefs in spontaneous generation.  Which of the following offers an explanation for this?

a) Their experimentation proved spontaneous generationb) They argued that the microscope killed the vital principlec) The teachings and influence of Aristotle was still strongd) They were afraid of microorganisms

Which is the correct sequence of contributors, from earliest to most recent in the development of the theory of biogenesis?

a) Needham-Pateur-Redi-Spallanzani

b) Redi-Needham-Spallanzani-Pasteur

c) Pasteur-Redi-Needham-Spallanzani

d) Redi-Pasteur-Spallanzani-Needhan

 The term abiogenesis was coined by

a) Thomas Huxley

b) Spallanzani

c) Louis Pasteur

d) Aristotle

Which of the following statements is not a part of the cell theory?

a) New cells arise from cells that already exist

b) All cells contain a true nucleus

c) All living things are composed of one or more cells

d) The cell is the smallest entity that retains the properties of life.

Which of the following statements best describes the modern cell theory?

a) All organisms are composed of numerous cellsb) The cell is the basic unit of structure and

function of all organismsc) Different Cells are specialized to perform

various functionsd) The total activity of an organism depends on

the function of some specialized cells  

Which of these cells would not be classified as eukaryotic?

a) plant cells

b) blue-green algae cells

c) fungi cells

d) animal cells 

The microscope component that moves the tube up and down to focus on a specimen when using the low-power objective is the

a) diaphragm

b) fine adjustment knob

c) coarse adjustment knob

d) none of the above

e) revolving nosepiece.

The microscope component that changes the objective lenses is the

a) revolving nosepieceb) coarse adjustment knobc) diaphragmd) stagee) condenser lens.

If the ocular lens is marked 10´ and the high power objective lens is marked 40´, the total magnification is

a) 4´

b) 400´

c) 10´

d) 1/4´

e) 40´.

• The cell membrane is best described as

a) impermeable

b) permeable

c) selectively permeable

d) opaque.

The cytoplasm is the site of

a) chemical reactionsb) transport of nutrientsc) nutrient processingd) all of the abovee) storage of wastes.

The main function of vesicles within the cell is

a) maintaining turgor

b) transport

c) endocytosis

d) none of the above

e) protein synthesis.

A plant vacuole serves as a storage space for

a) waterb) proteinsc) sugarsd) all of the abovee) minerals.

• A sample of cells is placed in a salt solution, resulting in the shrinkage of the cell and distortion of the membrane.  What term best describes the salt solution, relative to the cell?

a) Hypertonic

b) Isotonic

c) Hypotonic

d) Osmotic

Which of the following processes describe the movement of solute down its concentration gradient?

a) Active Transport

b) Phagocytosis

c) Diffusion

d) Osmosis

What will most likely happen if the concentration of water and solutes is equal on both sides of a membrane?

a) Only the solutes will move through the membrane

b) Osmosis will occur in both directions equallyc) Osmosis will be preventedd) Water will move into the region of lower fluid

volume

What is osmosis?

a) a type of reverse diffusionb) the movement of solute particles through a

semi-permeable membranec) the movement of water through a semi-

permeable membraned) the movement of any substance through a

selectively permeable membranee) the movement of solvent particles without need

for a membrane

The movement of materials across a cell membrane without the expenditure of cell energy is called

a) passive transport

b) diffusion

c) active transport

d) endocytosis

e) Brownian motion.

If a solution is described as hypotonic compared to a cell, the solution has

a) A higher concentration of solutes than the cell

b) a lower concentration of solutes than the cell

c) the same concentration of solutes as the cell

d) a lower water concentration than the cell

e) no solvent.

If a solution is described as hypertonic compared to a cell, the solution has

a) a lower concentration of solutes than the cell

b) a higher concentration of solutes than the cell

c) the same concentration of solutes as the cell

d) the same concentration of water as the cell

e) no solvent.

Some substances, such as glucose, diffuse into the cell faster than other materials. The most likely explanation for this involves

a) large holes in the cell membrane

b) glucose is more energetic than other materials

c) phospholipid assistance

d) protein carrier molecules

e) glycoproteins.

Meat and fish are often preserved by salting. This method prevents spoilage by applying knowledge of

a) osmosis

b) the poisonous nature of chlorine in salt

c) active transport

d) hypotonic solutions

e) facilitated diffusion