A skeleton is a structure that provides support and protection. It plays an important role in locomotion. Exoskeleton and endoskeleton are the two major types of skeletons found in animals.

Question

Want to see more full solutions like this?

Answer 1

Question

Chapter 45, Problem 1TY

Summary Introduction

Introduction: A skeleton is a structure that provides support and protection. It plays an important role in locomotion. Exoskeleton and endoskeleton are the two major types of skeletons found in animals.

Expert Solution & Answer

Answer to Problem 1TY

Correct answer: A disadvantage of an exoskeleton is that it must be periodically shed. This leave the animal in a vulnerable state. Hence, the correct answer is option b.

Explanation of Solution

Reason for correct answer:

Exoskeletons provide support for the body and protection from the external environment and predators. It plays an important role in the protection of internal organs. They must be periodically shed and replaced in order to allow the growth of the animal. However, the new exoskeleton formed is soft, making the animal more vulnerable to predators and the environment.

Option b. is given as “must be periodically shed, leaving the animal in a vulnerable state”.

The periodic shedding of exoskeleton makes the animal more vulnerable to predators and the environment. This is because, the new exoskeleton formed is soft. Hence, the correct answer is option b.

Reasons for incorrect answer:

Option a. is given as, “cannot protect an animal’s internal organs”.

Exoskeleton plays an important role in the protection of internal organs. It is not a disadvantage of an exoskeleton. Hence, option a. is incorrect.

Option c. is given as, “does not provide any flexibility for the ease of movement of an animal”.

Exoskeletons are tough, durable, and segmented to provide flexibility and to allow movement. Hence, option c. is incorrect.

Option d. is given as, “is a soft, easily damaged structure”.

Exoskeletons are tough and durable. The new exoskeleton formed after molting is soft. Hence, option d. is incorrect.

Option e. is given as, “cannot protect the outside of the body surface”.

Exoskeleton surrounds and protects most of the body surface. It is not a disadvantage of exoskeleton in animals. Hence, option e. is incorrect.

Hence, the options a., c., d., and e. are incorrect.

Conclusion

Thus, a disadvantage of an exoskeleton is that it must be shed periodically. This leave the animal in a vulnerable state.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Students have asked these similar questions

Biopharmaceutics and Pharmacokinetics:Two-Compartment Model Instant Absorption Questions SHOW ALL WORK, including equation used, variables used and each step to your solution, report your regression lines and axes names (with units if appropriate) :Calculate a-q a) B1, b) B2, c) hybrid rate constant (1) d) hybrid rate constant (2) e) t1/2,dist f) t1/2,elim g) k10 h) k12 i) k21 j) initial concentration (C0) k) central compartment volume (V1) l) steady-state volume (Vss) m) clearance (CL) AUC (0→10 min) using trapezoidal rule n) AUC (20→30 min) using trapezoidal rule o) AUCtail (AUC360→∞) p) total AUC (using short cut method) q) volume from AUC (VAUC)

Glitazones reduce insulin resistance by binding to a transcription factor in adipocytes, thereby reducing thesecretion of fatty acids. Glitazones are taken orally (in pill form). Using pharmacokinetic modeling, deriveequations to describe how the concentration of glitazones varies in the plasma as a function of time. Yourequations should be of the form: dCglitazone /dt = something, or dMglitazone /dt = something. Your model shouldinclude three compartments: the gut, the plasma, and the fatty tissues. Make sure to include a diagram thatillustrates your thinking, state all assumptions, and define your variables. Do not solve the equations.

Case Study—Ella Review the case study and then answer Parts A through F. Ella has a family history of diabetes. She wants to follow a healthful eating pattern that can lower her risk for developing this condition. Her dietitian recommends a goal of 450 to 600 kcal per meal and advises Ella to follow the Acceptable Macronutrient Distribution Range (AMDR) for carbohydrates and the Dietary Guidelines for Americans 2015-2020, which recommend limiting added sugar. She also recommends that Ella choose whole grains rather than processed grains. Ella decides to pack a lunch to take to work every day. This morning she’s making a sandwich for her lunch. Categories of Sandwich Options (Top of the screen) Breads Spreads Cheeses Vegetables Proteins Specific food items to select White Bread 6-inches Honey Mustard Provolone LettuceTomatoBell Peppers Turkey Part A - Reading Nutrition Facts Panels for Total Kilocalories How many total kilocalories are in Ella’s sandwich? _____…

Answer 2