Textbook Question
Which of the following terms is least like the others?
a. Monosaccharide
b. Phospholipid
c. Fat
d. Steroid
e. Lipid
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Ch. 2 - Science Fiction, Bad Science, and Pseudoscience
Belk, Maier6th EditionBiology: Science for LifeISBN: 9780135214084
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Table of contents
- Ch. 1 - Can Science Cure the Common Cold?12
- Ch. 2 - Science Fiction, Bad Science, and Pseudoscience12
- Ch. 3 - Is It Possible to Supplement Your Way to Better Performance and Health?10
- Ch. 4 - Body Weight and Health10
- Ch. 5 - Life in the Greenhouse10
- Ch. 6 - Cancer10
- Ch. 7 - Fertility10
- Ch. 8 - Does Testing Save Lives?10
- Ch. 9 - Biology of Wrongful Convictions10
- Ch. 10 - Genetically Modified Organisms10
- Ch. 11 - Where Did We Come From?13
- Ch. 12 - An Evolving Enemy8
- Ch. 13 - Understanding Race11
- Ch. 14 - The Greatest Species on Earth?8
- Ch. 15 - Is the Human Population Too Large?10
- Ch. 16 - Conserving Biodiversity12
- Ch. 17 - The Human Footprint10
Belk, Maier6th EditionBiology: Science for LifeISBN: 9780135214084Not the one you use?Change textbook
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Belk, Maier 6th EditionCh. 2 - Science Fiction, Bad Science, and PseudoscienceProblem 9
Belk, Maier 6th EditionCh. 2 - Science Fiction, Bad Science, and PseudoscienceProblem 9Chapter 2, Problem 9
A fat molecule consists of ________.
a. Carbohydrates and proteins.
b. Complex carbohydrates only.
c. Saturated oxygen atoms.
d. A carbon skeleton and fatty acids.
Verified step by step guidance1
Step 1: Understand the structure of a fat molecule. Fat molecules, also known as triglycerides, are composed of two main components: a glycerol backbone and three fatty acid chains. These fatty acids are long chains of carbon and hydrogen atoms.
Step 2: Analyze the options provided in the question. Option a mentions carbohydrates and proteins, which are not components of fat molecules. Option b refers to complex carbohydrates, which are also unrelated to fat molecules. Option c mentions saturated oxygen atoms, which is incorrect as fats primarily consist of carbon, hydrogen, and oxygen atoms but not in a saturated oxygen form.
Step 3: Focus on option d, which mentions a carbon skeleton and fatty acids. This aligns with the structure of fat molecules, as the glycerol backbone provides the carbon skeleton, and the fatty acids are attached to it.
Step 4: Recall that fatty acids can be saturated or unsaturated, depending on the presence of double bonds between carbon atoms. This detail further supports the idea that fats consist of a carbon skeleton and fatty acids.
Step 5: Conclude that the correct answer is option d, as it accurately describes the components of a fat molecule: a carbon skeleton (glycerol backbone) and fatty acids.
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Fat Molecule Structure
Fat molecules, also known as lipids, primarily consist of a carbon skeleton and fatty acids. The carbon skeleton provides the backbone, while fatty acids are long hydrocarbon chains that can be saturated or unsaturated, influencing the fat's properties and functions in biological systems.
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Community Structure
Saturated vs. Unsaturated Fatty Acids
Fatty acids can be classified as saturated or unsaturated based on their chemical structure. Saturated fatty acids have no double bonds between carbon atoms, making them solid at room temperature, while unsaturated fatty acids contain one or more double bonds, resulting in a liquid state at room temperature. This distinction is crucial for understanding the health implications of different types of fats.
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Role of Lipids in Biology
Lipids play essential roles in biological systems, including energy storage, cellular structure, and signaling. They are key components of cell membranes, providing fluidity and barrier functions, and serve as a concentrated energy source, making them vital for metabolism and overall cellular function.
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Related Practice
Textbook Question
Different proteins are composed of different sequences of ________.
a. Sugars
b. Lipids
c. Fats
d. Amino acids
e. Carbohydrates
Textbook Question
Proteins may function as ________.
a. Genetic material
b. Cholesterol molecules
c. Fat reserves
d. Enzymes
e. All of the above
Textbook Question
Eukaryotic cells differ from prokaryotic cells in that only eukaryotic cells ________.
a. Contain DNA
b. Have a plasma membrane
c. Are considered to be alive
d. Have a nucleus
e. Are able to evolve
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Textbook Question
Which of the following lists the chemical bonds from weakest to strongest?
a. Hydrogen, covalent, ionic
b. Covalent, ionic, hydrogen
c. Ionic, covalent, hydrogen
d. Covalent, hydrogen, ionic
e. Hydrogen, ionic, covalent
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Textbook Question
Which of the following is not consistent with evolutionary theory?
a. All living organisms share a common ancestor.
b. The environment affects which organism survives to reproduce.
c. Natural selection always favors the same traits, regardless of environment.
d. Humans are not necessarily the best adapted organisms.
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