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Chapter 33: Q.30 (page 946)

What is the relationship between BMR and body size? Why?

Short Answer

Expert verified

The relations between BMR and the body size is that smaller organisms having a higher BMR, per body weight, than larger organisms.

Step by step solution

01

Step1. Introduction  

Basal metabolic rate (BMR):- metabolic rate at rest in endothermic animals.

BMR is the number of calories your body uses to maintain vital functions, such as breathing, heart rate, brain function.

02

Explanation 

The relation between the body size and BMR is the smaller organism the greater surface area for their mass than larger ones. so, the smaller organisms lose heat at a faster rate than the larger organisms and need more energy to maintain a constant internal temperature. This results in a smaller organisms having a higher BMR, per body weight, than larger organisms.

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Most popular questions from this chapter

The cell found in bone that makes the bone is called an ________.

a. osteoblast

b. osteocyte

c. osteoclast

d. osteon

Which type of animal maintains a constant internal body temperature?

a. endotherm

b. ectotherm

c. coelomate

d. mesoderm

Which is an example of negative feedback?

a. lowering of blood glucose after a meal

b. blood clotting after an injury

c. lactation during nursing

d. uterine contractions during labor

How does diffusion limit the size of an organism? How is this counteracted?

Which of the following is not a way that ectotherms can change their body temperatures?

a. Sweating for evaporative cooling.

b. Adjusting the timing of their daily activities.

c. Seek out or avoid direct sunlight.

d. Huddle in a group.
See all solutions

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