B 101 – Darwin discovered the significance of the fact

10 Jun B 101 – Darwin discovered the significance of the fact

Question
Question 11 pts

Darwin discovered the significance of the fact that individuals vary. Which of the following concepts did Darwin discover?

natural selection

inheritance

genetics

genes and alleles

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Question 21 pts

Elements are composed of a single type of atom.

True

False

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Question 31 pts

When a compound is composed of many molecules connected to each other it is referred to as a:

element.

macromolecule.

micromolecule.

mixture.

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Question 41 pts

Why is it important to ask questions before reaching a conclusion?

It diverts attention away from the issue.

It makes you seem intelligent.

It gives you more time to think.

It helps you make informed decisions.

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Question 51 pts

Which of the following scenarios is the best example of evolution?

A particular species of flowers in a meadow were pollinated by bees for several hundred years. Over time, fewer and fewer bees can be found in the meadow. Some hummingbirds are attracted to a few of the plant species with brightly colored flowers. Over time, more of the plant varieties now have brightly colored flowers.

a.A population of mice lives in a forest. A species of tree is introduced which reduces the amounts of nuts available for the mice. There does not appear to be a change in the mice over time.

b.A mouse is nearly caught in a mouse trap. The mouse learns through that experience to stay away from mouse traps and teaches her offspring to avoid mousetraps. Mice are no longer caught in mousetraps.

A tidal wave removes all of the grass on an island.

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Question 61 pts

Evolution is the central concept that explains biology, because _____ of the features of organisms are the result of evolutionary change.

some

none

all

most

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Question 71 pts

Which phrase best demonstrates how life continues with reproduction and inheritance? Choose all that apply.

John and Mary adopted a new baby girl.

My wife just gave birth to our new son.

A sea star has lost an arm.

A dog owner has bred a new breed.

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Question 81 pts

In many cases, genetic screening points to potential medical conditions that an individual might develop. Since there is a degree of uncertainty, which of the following could be a NEGATIVE consequence of medical screening? Choose all that apply.

better health choices

an unnecessary abortion

an unnecessary medical procedure

rejection of a potential spouse

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Question 91 pts

Match each term with the correct definition.

complex organic substances present in living cells whose molecules consist of many nucleotides linked in a long chain

[ Choose ]

lipids

proteins

nucleic acids

carbohydrates

any of a class of nitrogenous organic compounds that consist of large molecules composed of one or more long chains of amino acids

[ Choose ]

lipids

proteins

nucleic acids

carbohydrates

any of a large group of organic compounds occurring in foods and living tissues and including sugars

[ Choose ]

lipids

proteins

nucleic acids

carbohydrates

a class of organic compounds that include fatty acidsenzymes / substances produced by living organisms that act as a catalyst to bring about a specific biochemical reaction

[ Choose ]

lipids

proteins

nucleic acids

carbohydrates