8.1 Unit Test Review

Can the percentage of individuals with certain traits in a population change because the environment changes?

• No, the percentage of individuals with a certain trait cannot change.

• Yes, certain inherited traits allow them to survive and reproduce and other individuals without the trait die.

• Yes they change their traits to better fit the environment

• No, individuals are unable to adapt to their environment

Which of the following is TRUE?

• Individuals of the same species may have different inherited traits that cause difference in their chances of survival and reproduction

• Individuals of the same species have the same inherited traits, that gives them an equal chance to survive and reproduce

• Different acquired traits in a population can cause differences in survival and reproduction

• Individuals of the same species may have different traits but it does not affect their chances of survival and reproduction

For a trait to be common in a population, it must increase the probability of _____________ and _______________.

• adaptation and variability

• eating and dying

• Survival and reproduction

• natural selection and mutation

Peppered moths have two color varieties, light and dark. Which moths do you think would survive in an area with a lot of pollution that causes tree bark to be darker?

• lighter

• darker

• both

• neither

If the pollution is reduced and tree bark becomes lighter which moths do you think would survive?

• Light

• Dark

• Both

• Neither

Skin cancer occurs when skin cells grow uncontrolled. It can be caused by UV light which can alter the genetic sequence of cells. Which best describes how UV light might cause skin cancer?

• UV light changes the genes that make proteins, the new code changes the structure and function of these proteins. Cancer is the result

• UV light changes the shape of the proteins, these proteins change the genes resulting in cancer

• UV light makes skin cells grow faster and faster, eventually they grow so fast causing cancer.

• None of the above

Cystic Fibrosis (CF) is caused by a deletion of 3 letters in a gene sequence. How might this deletion cause the afflicted person to produce excessive mucus?

• The 3 missing letters in the gene sequence are needed to build a protein that controls mucus production

• The 3 letters in the gene sequence don't matter, at least 6 letters must be missing

• The gene sequence does not matter. The protein is what determines mucus production

• None of the above

CF is seen in a higher percentage of people today than it was 200 years ago. which explanation for this increase is most likely?

• The thick mucus is better at trapping air pollution. Due to the increase in air pollution, CF has become more common

• Medical advances have helped people with CF survive longer, increasing the likelihood that they will survive and reproduce.

• CF only occurs in boys

• None of the above

In a CER (claim, evidence, reasoning) What is the claim?

• Your answer to the question that is being studied

• Data you find from research or experimentation

• a rule or scientific principle that explains why the evidence supports the claim

In a CER (claim, evidence, reasoning) What is the evidence?

• Your answer to the question that is being studied

• Data you find from research or experimentation

• a rule or scientific principle that explains why the evidence supports the claim