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AP Biology Unit 8R: Environmental Pollution & Organismal Health — practice questions — page 3

Explore 84 free Unit 8R: Environmental Pollution & Organismal Health questions in AP Biology Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Unit 8R: Environmental Pollution & Organismal Health questions and exercises with answers

Showing questions 61–84 of 84.

An organism that prepares its own food using sunlight is called:Read the answer and worked solution →A living body must keep moving molecules around even at rest because:Read the answer and worked solution →The pigment that captures light in photosynthesis is:Read the answer and worked solution →Bile is secreted by the:Read the answer and worked solution →Lactic acid builds up in human muscles during:Read the answer and worked solution →Aerobic respiration of one molecule of glucose produces approximately:Read the answer and worked solution →The villi in the small intestine help in:Read the answer and worked solution →Photosynthesis converts CO₂ and water into glucose using:Read the answer and worked solution →The human heart has how many chambers?Read the answer and worked solution →Blood vessels that carry blood AWAY from the heart are called:Read the answer and worked solution →In plants, water and minerals are carried upward by:Read the answer and worked solution →The basic structural and functional unit of the kidney is the:Read the answer and worked solution →Evaporation of water from leaf surfaces — the suction that helps pull water up the xylem — is called:Read the answer and worked solution →Why does the human heart have a complete septum between left and right sides?Read the answer and worked solution →In dialysis, the machine carries out the function of which organ?Read the answer and worked solution →The actual exchange of O₂ and CO₂ between blood and air happens at theRead the answer and worked solution →Which structure belongs to the conducting (not respiratory) zone?Read the answer and worked solution →Insects breathe throughRead the answer and worked solution →Antibodies passed from a mother to her infant through breast milk give the infantRead the answer and worked solution →The spread of cancer cells from the original site to distant organs is calledRead the answer and worked solution →Antibodies are produced byRead the answer and worked solution →Vaccination provides protection against future infection mainly byRead the answer and worked solution →Cervical cancer is most commonly caused byRead the answer and worked solution →HIV primarily infectsRead the answer and worked solution →

Worked practice questions

An organism that prepares its own food using sunlight is called:

  1. heterotroph
  2. autotroph
  3. parasite
  4. saprotroph
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Correct answer: B. autotroph

Autotrophs synthesise their own food (e.g., green plants via photosynthesis). Heterotrophs eat pre-made food.

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A living body must keep moving molecules around even at rest because:

  1. movement releases heat directly
  2. movement is unrelated to life
  3. movement repairs cell structures
  4. movement creates new species
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Correct answer: C. movement repairs cell structures

Living structures keep breaking down due to environmental wear. Constant molecular traffic repairs them — this maintenance is why molecular movement is the signature of life.

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The pigment that captures light in photosynthesis is:

  1. melanin
  2. haemoglobin
  3. carotene
  4. chlorophyll
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Correct answer: D. chlorophyll

Chlorophyll, in the chloroplasts of green leaves, absorbs sunlight (mostly red and blue) for photosynthesis.

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More Biology topics

Unit 5C: Non-Mendelian Genetics & Population TransmissionUnit 2B: Membrane Transport, Tonicity & Cell SizeUnit 8K: Human Organ Systems & HomeostasisUnit 3B: Photosynthesis, Respiration & Cellular EnergyUnit 7B: Population Genetics & Hardy-Weinberg EvolutionUnit 2G: Osmoregulation & Membrane DynamicsUnit 5D: Organismal Reproduction & Life CyclesUnit 6B: Transcription, Translation & Gene Expression