/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 6 What is the primary energy sourc... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 8: Problem 6

What is the primary energy source for cells? a. glucose b. starch c. sucrose d. triglycerides

Short Answer

Expert verified
a. glucose

Step by step solution

01

Identify the function of a primary energy source

Cells require a primary source of energy to perform various functions such as growth, repair, and maintenance. The primary energy source should be a molecule that can be easily utilized and converted into energy by the cells.
02

Understand the options provided

Review the given options to understand which one serves as an immediate and most efficient energy source for cells. The options are glucose, starch, sucrose, and triglycerides.
03

Evaluate Glucose

Glucose is a simple sugar that directly participates in cellular respiration, a process that generates ATP (adenosine triphosphate), which is the energy currency of the cell. Therefore, glucose serves as a quick and efficient source of energy.
04

Evaluate Starch

Starch is a polysaccharide composed of multiple glucose units. While it can be broken down into glucose, the process takes time, making it less immediate compared to pure glucose.
05

Evaluate Sucrose

Sucrose is a disaccharide composed of glucose and fructose. It must be broken down into its monosaccharide components before its energy can be utilized, making it slower than pure glucose.
06

Evaluate Triglycerides

Triglycerides are a form of fat that cells can convert into energy. However, the process of breaking down triglycerides is more complex and less immediate than utilizing glucose.
07

Conclusion

After evaluating all options, glucose stands out as the primary energy source for cells due to its simplicity and immediate availability for energy production.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Glucose
Glucose is a simple sugar with the molecular formula C鈧咹鈧佲倐O鈧�. Its structure makes it easily transportable in the bloodstream. Once inside the cell, glucose is quickly broken down during cellular respiration to produce energy. This efficiency makes it the most immediate energy source for cells. Glucose is vital for functions such as brain activity, muscle contraction, and cellular repair.
  • Immediate energy source
  • Transportable in the bloodstream
  • Easy to break down
Glucose can be obtained from carbohydrates in our diet. Foods rich in glucose include fruits, vegetables, and honey. It's essential for cells in all living organisms, not just humans.
Cellular Respiration
Cellular respiration is a set of metabolic processes that occur in the mitochondria of cells. This process converts biochemical energy from nutrients into adenosine triphosphate (ATP), and releases waste products. The primary stages of cellular respiration include glycolysis, the citric acid cycle (Krebs cycle), and oxidative phosphorylation. During these stages, glucose is broken down, and energy is released.
  • Occurs in mitochondria
  • Includes glycolysis, Krebs cycle, and oxidative phosphorylation
  • Converts glucose to ATP
Without cellular respiration, cells would not have the energy required for crucial functions, including reproduction and growth. It's the cornerstone of cellular energy production.
ATP Production
ATP, or adenosine triphosphate, is often referred to as the 'energy currency' of the cell. It captures and transfers free energy needed for biochemical reactions. ATP is produced during cellular respiration, specifically during the processes of oxidative phosphorylation and the electron transport chain. One molecule of glucose can generate up to 32 molecules of ATP through these processes.
  • 'Energy currency' of cells
  • Produced during cellular respiration
  • Essential for biochemical reactions
ATP provides the energy necessary for processes such as muscle contraction, nerve impulse propagation, and chemical synthesis.
Energy Sources for Cells
Cells rely on various energy sources, with glucose being the primary one due to its immediate usability. Other energy sources include:
  • Starch: A polysaccharide that needs to be broken down into glucose before use
  • Sucrose: A disaccharide composed of glucose and fructose; requires an additional breakdown step
  • Triglycerides: Fats that provide more energy but are slower to break down
Each energy source has its own specific role and timing in cellular metabolism. For example, when immediate energy is needed, glucose is used. For prolonged energy needs, such as during fasting or exercise, cells might break down triglycerides.

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Photosynthesis and cellular respiration are found throughout the eukaryotic world. They are complementary to each other because they each use products of the other process. What do the two pathways share? a. chloroplasts and mitochondria b. Photosystems I and II c. the cytochrome complex d. thylakoids

What is the role of ribulose-1, 5 -bisphosphate, abreviated RuBisCO, in photosynthesis? a. It catalyzes the reaction between \(\mathrm{CO}_{2}\) and ribulose bisphosphate (RuBP). b. It catalyzes the reaction that produces glyceraldehyde 3 -phosphate (G3P). c. It catalyzes the reaction that regenerates RuBP. d. It catalyzes the reaction utilizing ATP and NADPH.

The classical theory of evolution is based on a gradual transformation, the accumulation of many random mutations that are selected. The biological evidence for evolution is overwhelming, particularly when one considers what has not changed: core conserved characteristics. A. Describe three conserved characteristics common to both chloroplasts and mitochondria Some hypotheses that have been proposed to account for biological diversity are saltatory, involving sudden changes, rather than gradualist. In defense of the classical gradualist theory of evolution, nearly all biologists in the late 1960s rejected the theory of endosymbiosis as presented by Lynn Margulis in 1967. B. Suppose that you want to disprove the theory of endosymbiosis. Explain how the following evidence could disprove the theory: i. a 鈥渢ransitional species鈥� with cellular features that are intermediate cells with and without mitochondria ii. a 鈥渢ransitional organelle鈥� with some features, such as compartmentalized metabolic processes, but not other features, such as DNA Explain how the following evidence supports the theory of endosymbiosis: iii. bacteria live within your intestines, but you still have a separate identity iv. no one has directly observed the fusion of two organisms in which a single organism results.

Carbon, in the form of \(\mathrm{CO}_{2},\) must be taken from the atmosphere and attached to an existing organic molecule in the Calvin cycle. Therefore, the carbon is bound to the molecule. The products of the cycle only occur because of the added carbon. What are the products of the Calvin cycle and what is regenerated? a. The product of the Calvin cycle is glyceraldehyde-3 phosphate and RuBP is regenerated. b. The product of the Calvin cycle is glyceraldehyde-3 phosphate and RuBisCO is regenerated. c. The product of the Calvin cycle is a 3-PGA molecule and glyceraldehyde-3 phosphate is regenerated. d. The product of the Calvin cycle is glyceraldehyde-3 phosphate and oxygen is regenerated.

3\. In which compartment of the plant cell do the light-independent reactions of photosynthesis take place? a. mesophyll b. outer membrane c. stroma d. thylakoid
See all solutions

Recommended explanations on Biology Textbooks

Astrobiological Science

Read Explanation

Biology Experiments

Read Explanation

Cellular Energetics

Read Explanation

Reproduction

Read Explanation

Cell Communication

Read Explanation

Heredity

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.