Biology ~ Lab test

What is one waste product that is released during exercise?

Sweat

Iodine solution

Test for starch

T pairs with

A

Dialysis tubing

Cell membrane

when designing an experiment the sample size must be

Large

The closer to the top of the gel electrophoresis chart

Larger fragment

Identify one body system, other than the circulatory system, that becomes more active as a result of exercise

Respiratory system so you can breathe faster

why glucose molecules can cross a cell membrane and starch molecules can not

Starch is a bigger molecule

geographic isolation

the physical separation of populations due to geographic barriers

What is one way scientists could use the banding patterns produced by gel electrophoresis

to see if the organisms are closely related

Beaks of finch

to support evolution

H20

water

A person's pulse rate generally goes down while sleeping. One reason for this decrease is

the body is using less oxygen while sleeping

Cup for diffusion lab

Amber

Adaptation

Beak shape is an example of an adaptation, a trait that helps an organism survive and reproduce (food source)

Bag for diffusion lab

Blue black

Relationships in biodiversity

Botana curus

G pairs with

C

What factor causes the DNA fragments to move in gel electrophoresis

Electric charge

C pairs with

G

Lungs

Gas exchange

If a starch-digesting enzyme were added to a sports gel that lists starch as an ingredient, which substance would increase in concentration

Glucose

Result of the diffusion lab

Glucose left dialysis bag because it was smaller than the starch Starch remained in bag because its too large

Diffusion

High concentration to low concentration

Natural selection

Nature chooses traits best for survival (traits can be passed down)

When the saddle-backed tortoises extend their long necks out of the shell, they are unprotected from attack. Scientists hypothesize that during the evolution of this tortoise, they had few predators. Which statement best supports this hypothesis?

Predators would have killed the tortoises with long necks, leaving more tortoises with shorter necks.

Making connections

Pulse rate

paper chromatography

Separates pigments based on size

Glucose

Small sugar molecule (monomer)

A pairs with

U

Glucose Test Strips

Used to test the presence of sugar in foods (Benedict's solution)

Genetic variation

Various beak sizes

The different beak structures observed is evidence of

different species of finches adapting to different environments over many generations

competition

fighting for resources

Starch

large carbohydrate molecule made of glucose building blocks (polymer)

On various Galapagos islands, finch species have different diets: seeds, insects, flowers, the blood of seabirds, and leaves. This is evidence that each species has a different

niche

A student collected data from an experiment on muscle fatigue. In order to interpret these data, the student should

organize the data into a table or graph

When you exercise your

pulse rate increases & cells require more oxygen

Heart

pumps oxygen/carbon dioxide nutrients/ waste

Paper chromatography is a method used in

separating mixtures of plant pigments

Scientists recently discovered that three different types of squid, a marine animal, previously thought to be three different species, were actually all members of one species. Their earlier ideas were based on using squid carcasses (dead bodies). The new, more accepted classification is most probably based on an analysis of

the DNA present in the cells of squid

reproductive isolation

when populations evolve into two separate species and can no longer interbreed due to the isolation