lecture 1.1

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Questions and Answers

Plants provide most of the calories and protein for the human diet. Is this statement true or false?

  • False
  • False, animals are the main source of calories and protein for humans
  • True (correct)
  • True, but only in tropical regions

Photosynthesis is the process by which plants convert __________ and __________ into sugars.

  • Methane, Oxygen
  • Carbon Dioxide, Water (correct)
  • Oxygen, Nitrogen
  • Hydrogen, Helium

Which of the following is NOT a human necessity mentioned in the text?

  • Clothing
  • Shelter
  • Food
  • Transportation (correct)

Plants serve as __________ in the food chain by producing sugars through photosynthesis.

<p>Producers (C)</p>
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Which of the following is NOT a product supplied by angiosperms as mentioned in the text?

<p>Plastics and synthetic materials (D)</p>
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Which of the following is true about stamens and carpels in angiosperms as mentioned in the text?

<p>They are the structures that produce seeds (B)</p>
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Which of the following is NOT a role of plants in the food chain as described in the text?

<p>Tertiary Consumers (A)</p>
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Which of the following is a by-product of photosynthesis as mentioned in the text?

<p>Oxygen (D)</p>
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Which elements are carbohydrates composed of?

<p>Carbon, hydrogen, and oxygen (D)</p>
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What is the main function of carbohydrates in cells?

<p>Sources of energy (A)</p>
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How many different amino acids make up proteins?

<p>20 (D)</p>
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Which type of lipids are largely composed of carbon and hydrogen?

<p>Triglycerides (D)</p>
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What is the main role of proteins in the human diet?

<p>Structural materials (B)</p>
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Which macromolecule is insoluble in water?

<p>Lipids (D)</p>
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How do you name a species?

<p>genus name and specific epithet (A)</p>
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Which statement is correct?

<p>genus is a group of related species (D)</p>
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How did Linnaeus's sexual system work?

<p>likened flowers to marriages (A)</p>
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Flashcards

Plants as food source?

True. Plants are the primary source of calories and protein in the human diet.

Photosynthesis inputs?

Photosynthesis converts carbon dioxide and water into sugars.

Plants' role in food chain?

Plants produce sugars via photosynthesis, forming the base of the food chain.

Angiosperm products?

Angiosperms (flowering plants) supply medicines, fuels, wood products, and ornamental plants, but not plastics and synthetic materials.

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Stamens and carpels function?

Stamens and carpels are the reproductive structures of angiosperms that produce seeds.

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Photosynthesis by-product?

Oxygen is a by-product of photosynthesis.

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Carbohydrate elements?

Carbohydrates are composed of carbon, hydrogen, and oxygen.

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Carbohydrate function?

Carbohydrates are the primary source of energy for cells.

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Amino acid count?

Proteins are composed of 20 different amino acids.

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Triglyceride make-up?

Triglycerides are lipids largely composed of carbon and hydrogen.

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Protein's dietary role?

Proteins supply amino acids to build structural materials in the human body.

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Macromolecule insoluble in water?

Lipids are a type of macromolecule that are insoluble in water.

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Naming species?

A species name consists of a Genus name and specific epithet.

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Genus definition?

A genus is a group of related species.

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Linnaeus's sexual system?

Linnaeus likened flowers to marriages.

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Study Notes

Plant Importance

  • Plants provide most of the calories and protein for the human diet.

Photosynthesis

  • Photosynthesis is the process by which plants convert light energy and carbon dioxide into sugars.

Food Chain

  • Plants serve as producers in the food chain by producing sugars through photosynthesis.
  • Plants are not a human necessity mentioned in the text (False, plants are a human necessity).

Angiosperms

  • Angiosperms supply seeds, fruits, and flowers.
  • Angiosperms do not supply amino acids.

Angiosperm Structure

  • Stamens and carpels are the reproductive structures of angiosperms.

Photosynthesis By-Products

  • Oxygen is a by-product of photosynthesis.

Carbohydrates

  • Carbohydrates are composed of carbon, hydrogen, and oxygen.
  • The main function of carbohydrates in cells is to provide energy.

Proteins

  • Proteins are composed of 20 different amino acids.
  • The main role of proteins in the human diet is to build and repair tissues.

Lipids

  • Fats are a type of lipid that is largely composed of carbon and hydrogen.

Macromolecules

  • Lipids are insoluble in water.

Species Classification

  • A species is named using the binomial nomenclature system.
  • A species is named using the genus and species name (e.g., Homo sapiens).

Linnaeus's Contributions

  • Linnaeus's sexual system was a classification system based on the number of stamens and pistils in a flower.
  • Linnaeus's system worked by grouping plants based on their reproductive structures.

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