Explanation Justify reasons for the correct statement: Thyroxine regulates the rate of metabolism, synthesized by the thyroid gland. It stimulates apoptosis in amphibian during metamorphosis, involved in resorption of the tadpole’s tail. Also involved in nervous system transformation. Option (b) is given as “Thyroxine inhibits metabolic processes” Thyroxine regulates the rate of metabolism. Hence, option b) is correct. Justify reasons for the incorrect statements: Option (a) is given as “oxytocin-stimulates uterine contractions during childbirth” Oxytocin stimulates contraction of the uterus during childbirth and also induces mammary gland contraction for milk secretion; hence it is a wrong answer...

CAMPBELL BIOLOGY MOD MASTERING (18 WEEK)

12th Edition

ISBN: 9780136920335

Author: Urry

Publisher: PEARSON

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Question

Chapter 45, Problem 4TYU

Summary Introduction

Introduction:

Endocrine cells secrete hormones into the extracellular fluids, which are the signaling molecules. The secreted hormones reach target cells through the bloodstream. Hormones bind only to specific cells based on the corresponding receptors and they act through chemical signals. They maintain homeostasis and regulate growth, development, blood pressure, metabolism and fluid concentration in the body.

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Chapter 45, Problem 3TYU

Chapter 45, Problem 5TYU

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Chapter 45 Solutions

CAMPBELL BIOLOGY MOD MASTERING (18 WEEK)

Ch. 45.1 - How do response mechanisms in target cells differ...Ch. 45.1 - What type of gland would you expect to secrete...Ch. 45.1 - WHAT IF? Predict what would happen if you...Ch. 45.2 - What are the roles of oxytocin and prolactin in...Ch. 45.2 - How do the two fused glands of the pituitary gland...Ch. 45.2 - WHAT IF? 2192 Propose an explanation for why...Ch. 45.2 - what if? Lab tests of two patients, each...Ch. 45.3 - If a hormone pathway produces a transient response...Ch. 45.3 - Prob. 2CC Ch. 45.3 - Prob. 3CC

Ch. 45 - MAKE CONNECTIONS What forms of signaling activate...Ch. 45 - Which major endocrine organs described in Figure...Ch. 45 - Prob. 45.3CR Ch. 45 - Prob. 1TYU Ch. 45 - Prob. 2TYU Ch. 45 - Growth factors are local regulators that (A) are...Ch. 45 - Prob. 4TYU Ch. 45 - Prob. 5TYU Ch. 45 - Which of the following is the most likely...Ch. 45 - The relationship between the insect hormones...Ch. 45 - DRAW IT In mammals, milk production by mammary...Ch. 45 - Prob. 9TYU Ch. 45 - Prob. 10TYU Ch. 45 - Level 3: Synthesis/Evaluation 11. WRITE ABOUT A...Ch. 45 - Prob. 12TYU

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Solution Summary: The author explains that endocrine cells secrete hormones into the extracellular fluids, which are the signaling molecules. They maintain homeostasis and regulate growth, development, blood pressure, metabolism, and fluid concentration

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