Lecture Quiz 1

A  microfilaments

B  lysosomes

C  mitochondria

D  peroxisomes

E  ribosomes

A  cell recognition

B  attachment sites for ligands

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

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

A  ribosomes

B  mitochondria

C  endoplasmic reticulum

D  Golgi apparatus

E  lysosomes

A  they work by increasing the activation energy

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

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

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

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

A  FALSE

B  TRUE

A  composed of repeating units of nucleic acids

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

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

D  primary structure refers to how a chain folds on itself

E  linear proteins are the most common

A  FALSE

B  TRUE

A  TRUE

B  FALSE

A  the endocrine and nervous systems regulate homeostasis

B  maintains stable conditions within the internal environment

C  conditions are kept within narrow ranges

D  the internal environment refers to the fluids inside the cells

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

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

C  they are the basic units of structure and function

D  a typical adult has trillions of cells

A  FALSE

B  TRUE