Standardized Test Practice: Question Preview (ID: 18280)

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Look at the image on page 19. What color flowers did Mendel discover were produced in the first generation?
a) The flowers were all blue
b) The flowers were all pink
c) The flowers were all purple
d) The flowers were all white

Based on the table on page 19, which statement is true?
a) Guinea pigs are not true-breeding for fur color.
b) The ratio of a hybrid cross in guinea pigs is about 2:1
c) In the first generation, the trait for black fur is masked by the trait for white fur
d) In guinea pigs, the trait for black fur is dominant, and the trait for white fur is recessive

Explain why Mendel obtained a 3:1 ratio for various traits during his hybrid crosses of pea plants?
a) The first plants were homozygous recessive plants, resultsing in heterozygous plants results in a 3:1 ratio
b) The first plants were true-breeding plants, resulting in heterozygous plants that then creates a 3:1 ratio
c) The first plants were heterozygous, resulting in a 1:2:1 ratio of traits that result in a 3:1 ratio
d) The first plants were true-breesing plants, resulting in a 3:1 ratio in the first generation breeding

A cross between a plant with red flowers and a plant with white flowers produces offspring with pink flowers. What is this an example of?
a) dominance
b) incomplete dominance
c) codominance
d) polygenetic dominance

Which type of bacteria need oxygen to live?
a) anaerobic
b) archaea
c) aerobic
d) endospore

Which of the following is NOT a characteristic of an archaea cell?
a) It has a cell wall
b) It has a nucleus
c) It has a circular strand of DNA
d) It has an extreme environment

Which statement is true about viruses?
a) A virus can replicate on its own.
b) A virus is a living organism that responds to stimuli.
c) A virus is a strand of RNA or DNA surrounded by a layer of protein.
d) A virus is larger than bacteria and its always the same shape.

After a hypothesis is confirmed, which is the next step a good scientist would take?
a) Design an experiment
b) modify or revise the hypothesis
c) repeat the test several times
d) speak at a science conference

Organizing results into a table, graph, or chart is done during which step of a scientific inquiry?
a) analyze results
b) ask questions
c) communicate results
d) draw conclusions

Start with 2 identical balloons, a board with 50 nails on it, and a board with a single nail on it. Press a balloon to the single nail and a balloon to the 50 nails. The single nail will pop the balloon and the other will not. Name the variables.
a) independent - force used on balloons, dependent - board used to hold the nails
b) indepenent - whether the balloon pops or not, dependent - the number of nails
c) independent - number of nails, dependent - whether the balloon pops or not
d) idependent - number of balloons, dependent - type of nails

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