Bio 3

________ are the fundamental units that make up all living things.

The size of a metabolizing cell is limited by its

Whose work proved conclusively that spontaneous generation of life from nonlife was not possible?

The reason that metabolizing cells are small in size is because

In developing embryos such as a chick, what restores the amount of surface area needed for exchange requirements?

If a cell has a volume of 3nm, what are the surface area and the volume of the cell?

What is the name of a photograph of a specimen obtained with a microscope?

Viruses are not made up of cells. According to cell theory, this means what?

Brett needs to distinguish two points that are 0.5 mm apart. What is the easiest way to do this?

The light microscope has a resolving power of

What type of microscopy provides a three-dimensional view of the surface of an object?

Angela would like to look at living algae from pond water. What type of microscope should she use?

Biologists classify cells into two broad categories--animals and plants.

Which of the following structures are present in both eukaryotes and prokaryotes?

Because bacteria are prokaryotes, they do not have DNA.

The phospholipid bilayer that surrounds/maintains the integrity of a cell is called a

What is the name of the semifluid medium inside the cell?

The cytoplasm is not considered a cellular organelle.

The plasma membrane contains how many layers of phospholipids?

Paleontologists have discovered ancient prokaryotic fossils dated at over 3.5 billion years old. These fossils resemble prokaryotes that are capable of living in extreme conditions such as high temperature and salinity. What domain do these prokaryotes belong to?

All of the following are possible origins of cell organelles in eukaryotes EXCEPT

Archaea are considered the evolutionary precursors to eukaryotic cells.

In the fluid-mosaic model of the plasma membrane, the phospholipid molecules are oriented so that the _____________ heads are facing the outside environment and the ________________ tails are facing the interior of the membrane.

Which of the following is not a function of the plasma membrane?

Which model currently describes the structure of the plasma membrane?

A short chain of sugar attached to a protein molecule on the plasma membrane is called

Which of the following can cross the plasma membrane because of its selective permeability?

The diffusion of water across a semi-permeable membrane is called

During a hurricane, salt water invades fresh water marshes causing many of the plants to die. The plants are killed because the salt water solution is __________________ to the plants, drawing water from their cells.

What is the function of cholesterol in the plasma membrane?

A solution is at equilibrium across a plasma membrane. If 50 molecules enter the cell, how many molecules exit the cell?

Often when a person is admitted to the hospital, an intravenous solution of normal saline is begun. Since this does not harm the patient, what is the tonicity of normal saline compared to your blood?

A certain substance continues to enter the cell in the presence of a metabolic poison that disables the generation of energy by the cell. Where is the higher concentration of the substance?

Choose the CORRECT statement about solute concentrations or particles inside and outside the cell.

Brad placed a drop of blood in some distilled water. What happened in the red blood cells?

The assisted transport of a molecule across the cell membrane without an expenditure of energy is known as what?

In the sodium potassium pump, sodium and potassium are both pumped out of the cell via active transport.

Which of the following does not utilize active transport?

Sheree observed an amoeba feeding by engulfing the prey with it's false feet or pseudopods. This process is known as

During exocytosis, the phospholipids present in the vesicle membrane will end up in the plasma membrane.

Which of the following processes moves large molecules across a membrane in the opposite direction of the others?

What cell structure is composed of a stack of slightly curved saccules that are important in packaging and secretion?

What is the obvious dark-stained structure within the nucleus that contains ribosomal RNA called?

The grainy-looking substance inside the nucleus is composed of

The nucleus of a cell in your thigh muscle contains the same genes as the nucleus of a cell in your brain.

How large is a nuclear pore in the nuclear envelope?

If a cell lacked ribosomes, it would not be able to

What do the SER and RER have in common?

Which of the following would be a way of finishing this hypothesis about the function of the Golgi apparatus? If the Golgi apparatus is involved in packaging products for secretion, then

Which organelle can be likened to a post office?

What cellular organelle is especially abundant in phagocytic white blood cells?

Which of the following is not associated with the cytoskeleton?

Centrosomes are associated with

Which of the following is not a function of the cytoskeleton?

A microtubule poison would interfere with mitosis and meiosis.

Which of the following diseases would you expect in someone with malfunctioning cilia?

Why type of junction must there be between the cells of your bladder?

Cilia are composed of microtubules while flagella are composed of actin filaments.

In an experiment in the laboratory, a small colored molecule is injected into one cells. Within minutes, the molecule has entered the adjacent cells. What type of junction connects these cells?

What are the folds in mitochondrial membranes called?

The gel-like fluid substance within a mitochondrion is called the

The sum of all of the chemical reactions that occur in a cell collectively are called

In a metabolic pathway, substrate Z is broken down to form product Y and X. Y is further broken down into products V and W. How many enzymes are required for this metabolic pathway?

Why is glycolysis believed to have evolved early in the history of life?

Which of the following processes in the breakdown of glucose does not require oxygen?

Only glucose can be used as an energy source in the human body.

The first day of football practice was rough on the squad. The players complained of cramps and sore muscles. The reason for their complaints was that there was a __________________ build up in their muscles.

Since all organisms carry on cellular respiration, all living cells must contain mitochondria.

If the mitochondrion is the result of endosymbiosis, what membrane of the mitochondrion represents the engulfing vesicle?

Fermentation produces more ATP than does aerobic respiration.

When ATP is broken down, heat is released.

If you could remove all the phosphate in the cell, what would happen to the ATP cycle?