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Tenth Grade (Grade 10) Biology Questions

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Grade 10 Botany
The reproductive structure of a flowering plant is the
  1. root.
  2. stem.
  3. flower.
  4. leaf.
Grade 10 Food Chains and Webs
Why are decomposers such an essential part of any food web and ecosystem?
  1. Decomposers recycle nutrients that keep the flow of energy going.
  2. Decomposers provide the base of all energy production in the food web.
  3. Decomposers are responsible for keeping the numbers of herbivores in check.
  4. Decomposers prevent new species from coming into the system.
Grade 10 Biology
Biology is the study of
  1. plants and animals.
  2. physics and chemistry.
  3. life.
  4. human life.
Grade 10 DNA, RNA, and Genetics
What is the role of hydrogen bonds in the structure of DNA?
  1. code for proteins
  2. synthesize proteins
  3. separate the strands
  4. connect the base pairs
Grade 10 Cell Structure and Function
What is the main function of a selectively permeable membrane?
  1. store water
  2. store chemicals
  3. break down molecules within the cell
  4. regulate what enters and leaves the cell
Grade 10 DNA, RNA, and Genetics
Which scientists are credited with discovering the physical structure of DNA?
  1. Watson and Crick
  2. Einstein and Crick
  3. Mendel and Watson
  4. Holmes and Watson
Grade 10 Cell Structure and Function
The correct sequence for meiosis is
  1. prophase, metaphase, anaphase, telophase.
  2. telophase, anaphase, metaphase, prophase.
  3. metaphase, anaphase, telophase, prophase.
  4. cytokinesis, telophase, interphase, prophase.
Grade 10 Communities, Populations, and Ecosystems
You observe two male deer fighting over the same food resource. This interaction is an example of                 .
  1. competition
  2. symbiosis
  3. predation
  4. all of the above
Grade 10 Conservation and Biodiversity
The variety of life across the biosphere is
  1. biodiversity.
  2. genomics.
  3. homeostasis.
  4. ecology.
Grade 10 Evolution
During a study session about evolution, one of your fellow students remarks, "The giraffe stretched
its neck while reaching for higher leaves; its offspring inherited longer necks as a result." Which
statement is most likely to be helpful in correcting this student's misconception?
  1. Characteristics acquired during an organism's life are generally not passed on through genes.
  2. Spontaneous mutations can result in the appearance of new traits.
  3. Only favorable adaptations have survival value.
  4. Disuse of an organ may lead to its eventual disappearance.
  5. If the giraffes did not have to compete with each other, longer necks would not have been passed on to the next generation.
Grade 10 Biochemical Pathways
                is the total of all the chemical reactions an organism needs to survive.
  1. Metabolism
  2. Catabolism
  3. Anabolism
  4. Chemistry
Grade 10 DNA, RNA, and Genetics
Given the following DNA strand, what is its complementary mRNA? G G A C T G A T T
  1. CCTGACTAA
  2. CCUGACUAA
  3. GGACTGATT
  4. TTAGTCAGG
Grade 10 Cell Structure and Function
What takes place in the mitochondria?
  1. lipid synthesis
  2. photosynthesis
  3. cellular respiration
  4. intracellular digestion
Grade 10 Circulatory and Immune Systems
What is hemoglobin?
  1. the oxygen-carrying molecule of a red blood cell
  2. the oxygen-storing molecule of muscle cells
  3. a layer of fat cells between the skin and muscle of marine mammals
  4. the rounded, fat-filled region of a toothed whale's forehead
Grade 10 Biotic and Abiotic
The living parts of an environment are the                .
  1. abiotic factors
  2. biotic factors
  3. producers
  4. predators
Grade 10 Symbiosis
The relationship between a tick and its host is an example of                .
  1. commensalism
  2. succession
  3. parasitism
  4. mutualism
Grade 10 Macromolecules
What type of macromolecules are the enzymes found in our bodies?
  1. lipids
  2. carbohydrates
  3. proteins
  4. nucleic acids
Grade 10 Food Chains and Webs
Which organism occupies the top consumer position?
Food Web Without Text Labels
  1. mushrooms
  2. hawk
  3. mouse
  4. snake
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