Videos
Which of the following best describes hormones?
a. Hormones are relatively unstable and work only in the area adjacent to the gland that produced them.
b. Hormones are long-lasting chemicals released from glands.
c. All hormones are lipid-soluble.
d. Hormones are chemical messengers that are released into the environment.
Introduction:
Human body has four types of mechanisms for cell communication, which includes the endocrine signaling and direct contact. The communication within the cells controls various activities of the body.
Answer to Problem 1U
Correct answer:
Hormones are the long lasting chemicals secreted by the endocrine glands. Therefore, option b. is correct.
Explanation of Solution
Reason for the correct statement:
Hormones are the chemicals, which regulates several functions of the body. They are secreted in the extracellular fluid by the endocrine glands, and the blood carries them to the site of action. Hormones perform their action at a distance from where they were secreted.
Option b. is given as "Hormones are long-lasting chemicals released from glands".
As, “the hormones are secreted by the endocrine glands which remains in the blood for long, and they regulate the function of various parts of the body from a distance”, is the right answer.
Hence, option b. is correct.
Reasons for the incorrect statements:
Option a. is given as “Hormones are relatively unstable and work only in the area adjacent to the gland that produced them”.
Hormones perform their action away from the site, from where they are secreted. They perform regulatory functions at a distance from their source. So, it is a wrong answer.
Option c. is given as “All hormones are lipid soluble”.
Certain types of hormones are lipid soluble and certain types of hormones are water soluble. So, it is a wrong answer.
Option d. is given as “Hormones are chemical messengers that are released into the environment.”
Hormones are released into the blood by the endocrine glands. So, it is a wrong answer.
Hence, options a., c., and d. are incorrect.
Hormones are the chemicals released from the glands, which remains for long in the circulatory system.
Want to see more full solutions like this?
Chapter 45 Solutions
Connect Access Card for Raven Biology 1
- Describe how hormone receptors can play a role in affecting the size of the responses of tissues to hormones.arrow_forwardWhich endocrine glands are associated with the kidneys? a. thyroid glands b. pituitary glands c. adrenal glands d. gonadsarrow_forwardFigure 16.14 Goiter, a disease caused by iodine deficiency, results in the inability of the thyroid gland to form T3 and T4 . The body typically attempts to compensate by producing greater amounts of TSH. Which of the following symptoms would you expect goiter to cause? a. Hypothyroidism, resulting in weight gain, cold sensitivity, and reduced mental activity. b. Hyperthyroidism, resulting in weight loss, profuse sweating and increased heart rate. C. Hyperthyroidism, resulting in weight gain, cold sensitivity, and reduced mental activity. d. Hypothyroidism, resulting in weight loss, profuse sweating and increased heart rate.arrow_forward
- Which of the following statements about hormones is not correct? A. The persistance of a hormone in the blood is usually of short duration.B. The time required for the onset of hormonal effects can vary C. Organ responses to hormones occur as soon as receptors are bound. D. The duration of hormone action is variable.arrow_forwardA scientist hypothesizes that the pancreas’s hormone production is controlled by neural stimuli. Which observation would support this hypothesis? a. Insulin is produced in response to sudden stress without a rise in blood glucose. b. Insulin is produced in response to a rise in glucagon levels. c. Beta cells express epinephrine receptors. d. Insulin is produced in response to a rise in blood glucose in the brain.arrow_forwardWhich gland produces hormones via humoral control? A. both thyroid and parathyroid glands B. thyroid gland C. parathyroid glandsarrow_forward
- Which of the following observations can be explained by the properties of hormone receptors? a) A certain tissue can react to more than one hormone b) A certain hormone affects only a specific tissue, not all tissues c) Some tissues react very quickly to a certain hormone, other tissues take many hours to react to the same hormonearrow_forwardUnlike the nervous system, the endocrine systema. uses chemical signals as a means of communication.b. helps maintain equilibrium.c. sends messages to target organs.d. changes the metabolism of cells.arrow_forwardWhen a catecholamine or peptide hormone binds to receptors on the surface of a cell, A. The hormone is transported to the nucleus where it alters the activity of dna. B. The cell membrane becomes less permeable. C. The cell becomes inactive. D. A second messenger appears in the cytoplasm.arrow_forward
- which of the following happens when a therapeutic synthetic hormone is introduced into the body to treat the patients natural hormone insufficiently? (select all that apply? A. the target cells respond the same way as when the hormone is natural B.the synthetic hormone has no effort on the target tissues C the amount of natural hormone produced by patients body declines D the syntheyic hormone is destroyed before it can have an effect on the target tissue.arrow_forwardCortisol facilitates which of the following reactions a). Protein synthesis b). Increased red blood cell production c). Protein and lipid catabolism to synithesize new glucose d). Increase immune responsesarrow_forwardWhich is the following is an example of the nervous system directly interacting with the endocrine system? a. The secretion of cortisol early in the morning b. The continuous secretion of thyroid hormone c. The secretion of epinephrine and norepinephrine during the fight or flight response d. The secretion of insulin after a mealarrow_forward
Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College