Metabolism, Anabolic and Catabolic Reactions

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

How do anabolic and catabolic reactions relate to metabolism?

  • Anabolic and catabolic reactions both release energy, differing only in the type of molecules they affect in metabolism.
  • Anabolic reactions release energy, while catabolic reactions use energy, both contributing to metabolism.
  • Anabolic reactions break down molecules and catabolic reactions build molecules, and neither uses energy.
  • Anabolic reactions build larger molecules using energy, while catabolic reactions break down large molecules releasing energy; both are aspects of metabolism. (correct)

During aerobic respiration, which of the following describes the relationship between inputs, outputs, and the organelles involved?

  • Glucose and oxygen are inputs, carbon dioxide, water, and ATP are outputs, occurring in the mitochondria. (correct)
  • Oxygen and ATP are inputs, glucose and water are outputs, occurring in the cytoplasm.
  • Oxygen and glucose are inputs, carbon dioxide and water are outputs, occurring primarily in the ribosomes.
  • Carbon dioxide and water are inputs, oxygen and glucose are outputs, occurring in the mitochondria.

How do organic and inorganic compounds differ in their structural composition?

  • Organic compounds contain carbon-oxygen bonds, while inorganic compounds contain carbon-nitrogen bonds.
  • Organic compounds are solely composed of carbon, hydrogen, and oxygen, while inorganic compounds include all other elements.
  • Organic compounds contain carbon and hydrogen, while inorganic compounds always lack both carbon and hydrogen.
  • Organic compounds are based on a carbon chain and include hydrogen, while inorganic compounds are not carbon-based. (correct)

What distinguishes monosaccharides, disaccharides, and polysaccharides from each other?

<p>The number of sugar units: one in monosaccharides, two in disaccharides, and many in polysaccharides. (A)</p> Signup and view all the answers

How does the structure of proteins relate to their function in the body?

<p>The amino acid sequence and subsequent folding dictate the protein's specific three-dimensional shape, which determines its function. (D)</p> Signup and view all the answers

What role do triglycerides play in the body's energy storage?

<p>Triglycerides are the main form of stored energy, comprising the majority of fat in the body. (D)</p> Signup and view all the answers

What is the main difference between DNA and RNA in terms of their function?

<p>DNA stores genetic information, while RNA is involved in protein synthesis. (A)</p> Signup and view all the answers

If a person's basal metabolic rate (BMR) is 1500 calories, what does this indicate?

<p>The number of calories they burn while at complete rest. (D)</p> Signup and view all the answers

How does the phospholipid bilayer contribute to cell function?

<p>It forms a selectively permeable barrier, controlling the movement of substances into and out of the cell. (A)</p> Signup and view all the answers

What is the key difference between a dipeptide and a polypeptide?

<p>A dipeptide contains two amino acids, while a polypeptide contains ten or more amino acids. (B)</p> Signup and view all the answers

Flashcards

Metabolism

The chemical reactions in the body's cells that change food into energy.

Basal Metabolic Rate (BMR)

The calories your body burns at complete rest.

Catabolism

Large molecules breaking down into smaller ones, releasing energy.

Anabolism

Smaller molecules built into larger ones, using energy.

Signup and view all the flashcards

Organic Compounds

Molecules with a carbon chain, hydrogen atoms, and possibly oxygen, nitrogen, and sulfur.

Signup and view all the flashcards

Inorganic Compounds

Molecules not based on a carbon chain, often lacking carbon atoms altogether.

Signup and view all the flashcards

Carbohydrates

Main energy source for cells, made of carbon, hydrogen, and oxygen.

Signup and view all the flashcards

Monosaccharide

Simple sugar; examples include glucose, fructose, and galactose.

Signup and view all the flashcards

Disaccharide

Two sugars joined together; examples include sucrose, lactose, and maltose.

Signup and view all the flashcards

Polysaccharide

Many simple sugars joined together; examples include glycogen, cellulose, and starch.

Signup and view all the flashcards

Study Notes

  • Metabolism involves the chemical reactions in body cells that convert food into energy.

Anabolic and Catabolic Reactions

  • Anabolism is the process where small molecules are built into larger ones, requiring energy.
  • Catabolism involves the breakdown of large molecules into smaller ones, releasing energy.

Organic vs Inorganic Compounds

  • Organic compounds are molecules containing a carbon chain, hydrogen atoms, and possibly oxygen, nitrogen, and sulfur (e.g., proteins, lipids, carbohydrates).
  • Inorganic compounds are molecules not based on a carbon chain (e.g., water, carbon dioxide, minerals, vitamins).

Carbohydrates

  • Carbohydrates, composed of carbon, hydrogen, and oxygen, serve as the main energy source for cells.
  • Monosaccharides are simple sugars found in fruits, including glucose, fructose, and galactose.
  • Disaccharides consist of two joined sugars like sucrose, lactose, and maltose.
  • Polysaccharides are made of many simple sugars, such as glycogen, cellulose, and starch.

Proteins

  • Proteins consist of carbon, hydrogen, oxygen, and nitrogen.
  • Amino acids are the building blocks of proteins.
  • Proteins are used in muscular growth and repair.

Protein Structures

  • A peptide bond is a join between two amino acids.
  • Dipeptides are two amino acids joined by a peptide bond.
  • Polypeptides consist of ten or more amino acids joined by peptide bonds.

Lipids

  • Lipids, made of carbon, hydrogen, and less oxygen than carbohydrates, serve as an energy source, stored as an energy reserve.
  • Triglycerides make up for 98% of fat in the body
  • They have one glycerol molecule and three fatty acids.

Nucleic Acids

  • Nucleic acids are large molecules made of carbon, hydrogen, oxygen, nitrogen, and phosphorus.
  • They contain nucleotides.
  • DNA and RNA are nucleic acids.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

More Like This

Use Quizgecko on...
Browser
Browser