Lecture Quiz 1

A  mitochondria

B  lysosomes

C  peroxisomes

D  ribosomes

E  microfilaments

A  attachment sites for ligands, cell recognition, enzymes and transport of materials into or out of the cell

B  enzymes and transport of materials into or out of the cell

C  attachment sites for ligands

D  cell recognition

A  ribosomes

B  Golgi apparatus

C  endoplasmic reticulum

D  mitochondria

E  lysosomes

A  enzyme activity is proportional to the temperature, up until 40° C

B  most enzymes work best between a pH of 7.3 and 7.4

C  they work by increasing the activation energy

D  enzyme activity is proportional to the substrate concentration up until the saturation point

E  the shape of the active site must match the shape of the substrate

A  TRUE

B  FALSE

A  primary structure refers to how a chain folds on itself

B  their functions include enzymes, buffers, and production of movement

C  composed of repeating units of nucleic acids

D  linear proteins are the most common

E  consists of the elements C, H, O, N and phosphorus

A  FALSE

B  TRUE

A  TRUE

B  FALSE

A  maintains stable conditions within the internal environment

B  conditions include pH, temperature, and the concentrations of nutrients, electrolytes and gases

C  conditions are kept within narrow ranges

D  the endocrine and nervous systems regulate homeostasis

E  the internal environment refers to the fluids inside the cells

A  they are the basic units of structure and function, a typical adult has trillions of cells, all cells are anatomically and physiologically similar and many cells are specialized for a particular function

B  they are the basic units of structure and function

C  all cells are anatomically and physiologically similar and many cells are specialized for a particular function

D  a typical adult has trillions of cells

A  TRUE

B  FALSE