/*! 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 103 Nonshivering thermogenesis is a ... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 8: Problem 103

Nonshivering thermogenesis is a means of increasing body temperature through: 1\. increased muscle activity. 2\. metabolism of subcutaneous fat. 3\. increased metabolic activity. 4\. metabolism of brown fat.

Short Answer

Expert verified
Nonshivering thermogenesis occurs through the metabolism of brown fat (Option 4).

Step by step solution

01

Understand Nonshivering Thermogenesis

Nonshivering thermogenesis refers to the process by which an organism increases its heat production without shivering. This usually involves metabolic pathways rather than muscle activity.
02

Eliminate Options Unrelated to Metabolism

Since nonshivering thermogenesis does not involve muscle contractions or movement, eliminate options associated with muscle activity, such as option 1 ('increased muscle activity').
03

Identify Metabolic Processes

Nonshivering thermogenesis relies on metabolic processes to generate heat. Therefore, we focus on the metabolism of specific types of fat or increased general metabolic activity. This aligns with options related to metabolism, among which are options 2 ('metabolism of subcutaneous fat'), option 3 ('increased metabolic activity'), and option 4 ('metabolism of brown fat').
04

Select the Most Relevant Option

Brown fat, particularly in mammals, is known for its role in nonshivering thermogenesis due to its ability to produce heat through its metabolic pathways. This makes option 4 ('metabolism of brown fat') particularly relevant.

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.

Metabolism
Metabolism is the complex network of chemical reactions that maintains life in all living organisms. It involves breaking down nutrients to release energy and using this energy to build cell components. Metabolism can be broadly divided into two categories: catabolism and anabolism.
  • Catabolism involves breaking down molecules into smaller units, releasing energy. This energy can then be harnessed for cellular activity or stored for later use.
  • Anabolism, on the other hand, is the process of building up complex molecules from simpler ones, requiring the input of energy.
In the context of nonshivering thermogenesis, metabolism primarily involves pathways that release energy as heat, rather than storing it, making it an effective means of increasing body temperature without physical activity. Essentially, it harnesses the energy of metabolic reactions to warm the body, especially important for maintaining temperature in cold environments.
Brown Fat
Brown fat, or brown adipose tissue, plays a key role in nonshivering thermogenesis. Unlike white fat, which primarily stores energy, brown fat's primary function is to produce heat. This is due to its high density of mitochondria, which are rich in a protein called uncoupling protein 1 (UCP1).
The main characteristics of brown fat include:
  • The presence of numerous mitochondria, giving it a brown appearance and excellent capacity for energy transformation.
  • UCP1 in mitochondria allows for the creation of heat by dissipating the proton gradient generated during cellular respiration as heat instead of producing ATP, thus literally 'burning' fat to keep warm.
Brown fat is particularly crucial in newborns and hibernating mammals, as it enables them to generate body heat without moving, a process vital for survival in cold temperatures.
Heat Production
Heat production in the body can occur through several processes, but nonshivering thermogenesis is unique because it doesn't involve muscle contractions. This heat production primarily relies on the metabolic activity in brown fat.
Nonshivering thermogenesis plays a vital role in:
  • Maintaining core body temperature in cold environments, especially in infants and small animals that have higher surface area-to-volume ratios and lose heat quickly.
  • Providing the necessary warmth without the energy consumption and physical strain associated with shivering.
This process is especially important for animals that need to conserve energy while still staying warm, such as those that hibernate. By utilizing meticulously regulated metabolic pathways, typically in brown fat, heat is efficiently generated to keep the organism at an adequate temperature even without physical movement.

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

\- Raynaud's disease is characterized mainly by: 1\. an emboli stemming from thrombus formation in the cardiac chambers. 2\. episodes of arteriospasm with resultant ischemia in the extremities. 3\. episodes of hypertension and constriction of the vessels. 4\. seccular aneurysms caused by trauma.

Why must the nurse be careful not to cut through or disrupt any tears, holes, bloodstains, or dirt present on the clothing of the patient who has experienced trauma? 1\. The clothing is property of another and must be treated with care. 2\. Such care will facilitate repair and salvage of the clothing. 3\. The clothing of the trauma victim is potential evidence with legal implications. 4\. Such care will decrease trauma to the family members receiving the clothing.

Which of the following is an example of an autoimmune disease? 1\. tuberculosis 2\. hypertension 3\. hemophilia 4\. scleroderma

The nurse's first responsibility in the management of postpartum hemorrhage is to do which of the following? 1\. Notify the physician prior to taking any action. 2\. Massage the uterus firmly until is remains hard. 3\. Take the woman's vital signs. 4\. Call for blood type and cross-math and have IV equipment ready.

Jane Love, a 35-year-old gravida III para II at 23 weeks' gestation is seen in the emergency room with painless, bright red vaginal bleeding. Jane reports that she has been feeling tired and has noticed ankle swelling in the evening. Laboratory tests reveal a hemoglobin level of \(11.5 \mathrm{~g} / \mathrm{dL}\). After evaluating the situation, the nurse determines that Jane is at risk for placenta previa, based on which of the following data? 1\. anemia 2\. edema 3\. painless vaginal bleeding 4\. fatigue
See all solutions

Recommended explanations on Biology Textbooks

Biological Processes

Read Explanation

Ecology

Read Explanation

Plant Biology

Read Explanation

Cellular Energetics

Read Explanation

Energy Transfers

Read Explanation

Biology Experiments

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.