which body system contains fingernails, skin, and hair?

reproductive

integumentary

respiratory

endocrine

which of the following is not a way that adaptation organisms?

it increases their ability to find/eat prey.

it increases their ability to find/attract mates.

it makes them immune to all diseases.

it protects them from difficult climate conditions.

which of the following would a successful organism have adaptations to deal with?

cold climate

predators

difficult-to-find prey

all of the above

what causes the original "new trait" in a population?

genetic mixing

cross-breeding with other species

random mutations

all of the above

what is the outcome of a random mutation?

it is always bad.

it can be good or bad.

it is always good.

it has no effect on the organism.

how similar is your entire genome to another unrelated human's?

over 99.9%

about 50%

0% - there are no similarities at all.

it depends.

a strand of dna that used to read aaactcg now reads aactcg. what occurred?

chromosomal mutation

point mutation-insertion

dna recombination

point mutation-deletion

which of the following are humans considered to be?

herbivores

carnivores

omnivores

all of the above

which of the following statements is not true?

the top predators are not always the largest animals.

when humans eat vegetables, we are being primary consumers.

if an orangutan is a secondary consumer in one food web, it must be in all food webs.

secondary consumers only receive 1% of the original energy passed from the producers.

according to the 10% rule, it is healthiest to

the highest trophic levels.

the lowest trophic levels.

from all the trophic levels.

there are different healthy things to eat from any level, so it depends.

what kind of relationship does a human have with the bacteria that live in his or her body?

mutualistic

commensalistic

mostly parasitic

many are mutualistic, but there may be other species too.