BIO 208L Lab Exam 1

what is a neutral pH?

7

total magnification

ocular lens (10x) x objective lens (4x, 10x, 40, 100x) = total magnification

what is the measurement of pH

concentration of H+ (hydrogen) ions and OH- (hydroxide) ions

when a solution is more basic, what color does it turn pH paper?

purple

when a solution is more acidic, what color does it turn pH paper?

red

An acidic solution has more...

H+ ions

a basic solution has more...

OH- ions

when a solution was neutral, what color did it turn in the cabbage water test?

purple

when a solution was acidic, what color did it turn in the cabbage water test?

pink

when a solution was basic, what color did it turn in the cabbage water test?

teal green

why is pH important in physiology of the body?

homeostasis, alkalosis/acidosis

what did the iodine test test for?

starch

what color was a positive iodine result?

black

what color was a negative iodine result?

brown

what did the Sudan IV test test for?

lipids

what color was a negative Sudan IV result?

light pink

what color was a positive Sudan IV result?

hot pink

what did the Biuret test test for?

proteins

what color did a positive Biuret test turn?

purple

what color did a negative Biuret test turn?

blue

what did Benedict's test test for?

simple sugar

what color did a positive result for Benedict's test turn?

red, orange, yellow, green

what color did a negative result for Benedict's test turn?

blue

what is the function of a ribosome?

protein synthesis

what is the function of the plasma membrane?

cell boundary

what is the function of microvilli?

greater surface area for absorption

what is the function of cilia?

small hair-like structure to move substances

what is the function of a nucleus?

center of cellular control

what is the function of the nucleolus?

makes ribosomes

what is cytoplasm?

fluid containing organelles between plasma membrane and nucleus

what is the function of rough endoplasmic reticulum?

site of protein synthesis and transport

what is the function of smooth endoplasmic reticulum?

site of lipid synthesis

what is the function of the mitochondria?

synthesis of ATP

what is the function of the Golgi apparatus?

packaging site of glycoproteins

what is the function of vesicles?

store or transport cellular substances

what is the function of lysosomes?

destroy debris and worn out cell fragments

what is the function of peroxisomes?

detoxify harmful or toxic substances

what is the function of the centrosomes?

produce microtubules and spindles fibers for cellular division

what is the function of the centrioles?

support and motility within cell

is this cell in a hypotonic, isotonic, or hypertonic solution?

isotonic

is this cell in a hypotonic, isotonic, or hypertonic solution?

hypertonic

is this cell in a hypotonic, isotonic, or hypertonic solution?

hypotonic

what is osmosis?

movement of water from a high solute concentration to a low solute concentration

what is diffusion?

movement of particles from high concentration to low concentration

when testing the temperature and rate of diffusion, did the gel bead expand more in hot or cold water?

hot water

when you placed a gel bead in a hypotonic and hypertonic solution, which solution did the gel bead GROW in?

hypotonic

draw a graph of the rate of diffusion when you used hot and cold water.

list one every day example of diffusion

tea bag in water

hyaline cartilage

compact bone

elastic connective tissue

blood

skeletal muscle

simple columnar epithelium

smooth muscle

adipose tissue

nervous tissue

simple cuboidal epithelium

simple squamous epithelium

eyepiece

body tube

body

rotating nosepiece

stage

objective lenses

fine adjustment knob

coarse adjustment knob

substage illuminator

Golgi apparatus

vesicles

nucleus

nucleolus

peroxisome

rough endoplasmic reticulum

mitochondria

lysosome

smooth endoplasmic reticulum

ribosomes

hint: site of protein synthesis

cytoplasm

hint: fluid

plasma membrane

hint: phospholipid bilayer

centrosome

hint: yellow part surrounding "churro" structures

centrioles

cross section

oblique section

longitudinal section

what is an example of a basic solution you tested with the cabbage water?

baking soda

what is an example of an acidic solution you tested with the cabbage water?

vinegar

why is distilled water and tap water pH different?

distilled water is pure, tap water is a mixture

cardiac muscle