1) Which of the following is NOT a principle of Darwin’s theory of evolution by natural selection?
a) Isolated populations always produce new species.
b) Individuals compete for limited resources.
c)Individuals that are suited to the environment survive and reproduce.
d)Natural populations tend to overproduce.

2)Which pair is an example of homologous structures?
a)The traps of Venus flytraps and the pitchers of pitcher plants
b)carrots and sweet potatoes
c)White potato tubers and ginger root rhizomes
d)all of the above

Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data

What is the main fuel source for the work of the cell

Which term most precisely describes the cellular process of breaking down large molecules into smaller ones? a) catalysis b) metabolism c) anabolism d) dehydration e) catabolism