5308045
Beschreibung
Quiz von Kaylyn Stevenson, aktualisiert more than 1 year ago
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Erstellt von Kaylyn Stevenson
vor etwa 8 Jahre
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Frage 1
Frage
The table shows the characteristics of four cells that students are comparing under a microscope.
Which cell in the table is a eukaryotic plant cell?
Antworten
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1
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2
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3
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4
Frage 2
Frage
Anna is preparing a presentation comparing the structures and evolutionary history of eukaryotes and prokaryotes. What significant information should Anna include in her presentation?
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Eukaryotes are more complex and contain mitochondria.
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Eukaryotes are more simple and do not contain mitochondria.
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Prokaryotes are more complex and do not contain mitochondria.
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Prokaryotes are more simple and contain mitochondria.
Frage 3
Frage
A student investigated the effectiveness of four different mouthwashes in destroying bacteria. He innoculated the nutrient agar in four petri dishes with bacteria. Each of four paper disks, 1 centimeter in diameter, was soaked in a different mouthwash sample, and placed on a different agar surface. Sterile procedures were used throughout the experiment. Each petri dish was place in an incubator at a temperature of 37 degrees Celsius for a 24-hour period. The diagram represents the sequence of events in this investigation. The shaded areas in the petri dishes represent regions of bacterial growth.
Which petri dish contains the most effective mouthwash and why?
Antworten
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Dish A because it has the largest area free of bacteria.
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Dish B because it has the largest area free of bacteria.
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Dish C because it has the largest area free of bacteria.
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Dish D because it has the largest area free of bacteria.
Frage 4
Frage
A biology student looked through a microscope and observed an Elodea cell in a drop of water then illustrated it in diagram A. He added at 10% hypertonic salt solution to the slide. He then observed the cell and illustrated the change in diagram B.
Which statement below offers the best explanation for the observed changes in diagram B?
Antworten
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Less salt flowed into the cell than out of the cell.
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More salt flowed into the cell than out of the cell.
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More water flowed into the cell than out of the cell.
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More water flowed out of the cell than into the cell.
Frage 5
Frage
The cell theory was developed by the work of Van Leevwenhoek, Hooke, Schwann, Schleiden, Virchow and many other scientists. What did the cell theory require many scientific contributions?
Antworten
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Each scientist set out the prove the cell theory and discovered the same results.
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It takes several scientists to first make the laws so that they can then become theories.
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It take several scientists to find conflicting data to create scientific debate.
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The work of many scientists is needed to provide a range of supporting data to develop a theory.
Frage 6
Frage
Antibodies are produced by the body to help fight disease and illness. Higher levels of antibodies are more effective at treating disease or illness than lower levels. The manufacturer indicates that the antibody is "highly effective within 3 weeks of administration in treating the flu". Which evidence statement BEST supports the manufacturer's claim?
Antworten
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Maximum level of antibodies is reached on Day 5.
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Maximum level of antibodies is reached on Day 15.
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Maximum level of antibodies is reached on Day 18.
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Maximum level of antibodies is reached on Day 23.
Frage 7
Frage
What is the result of DNA replication?
Antworten
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One double-stranded molecule produces two different double-stranded molecules.
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One double-stranded molecule produces two identical double-stranded molecules.
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Two double-stranded molecules produce a single different double-stranded molecule.
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Two double-stranded molecules produce a single identical double-stranded molecule.
Frage 8
Frage
What is the difference between a heart, a lung, and a kidney cell of a single individual?
Antworten
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Each of these cells contains different genes.
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Each of these cells uses a different method of gene transcription and translation.
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Each type of cell expresses different genes.
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Each type of cell uses different genetic coding rules.
Frage 9
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It has been observed that bats, horses, and humans have nearly the same amino acid sequence for hemoglobin. Which of the following ideas is supported by this observation?
Antworten
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All species can obtain nucleotides from their environments.
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All species have the ability to change structures as they adapt to their environments.
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Genetic mutations can lead to abrupt changes and create new species.
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Specific components of the genetic code are common to all species.
Frage 10
Frage
An amoeba reproduced using mitosis. What is true about the number of chromosomes in a daughter cell?
Antworten
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It has a new set of chromosomes.
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It has half as many chromosomes.
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It has the same number of chromosomes.
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It has twice as many chromosomes.
Frage 11
Frage
A cancerous tumor is made up of cells that have uncontrolled cell growth. This uncontrolled cell growth can be caused by a mutation in DNA. What causes uncontrolled cell growth in one part of a mouse's body but not in others?
Antworten
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A mutation is a somatic cell in this mouse's body.
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A mutation in a somatic cell produced by one of the mouse's parents.
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A mutation in a sex cell produced by this mouse's parents.
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A mutation in one of the sex cells produced by this mouse.
Frage 12
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Two species, A and B, both inhabit the same environment. Species A reproduces asexually while Species B reproduces sexually. A sudden change in its environment leads to the extinction of Species A. Why did Species B survive the change in environment?
Antworten
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Individuals from Species B all share identical genetic codes.
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Individuals from Species B can reproduce quickly to replace that those do not survive.
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Species B has a higher degree of genetic variation because of recombination of genes.
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Species B has a lower rate of genetic mutation.
Frage 13
Frage
What happens when the bonds between phosphate groups in ATP are broken?
Antworten
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Energy is absorbed.
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Energy is released.
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The adenosine molecule breaks apart from the remaining phosphates.
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the adenosine molecule is absorbed by the remaining phosphates.
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