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