______are signaling molecules that travel through the blood and affect distant cells in the same individual. a. Hormones c. Pheromones b. Neurotransmitters d. Neuromodulators

Q: Which of these functions explains the role of hormones in the reproductive systems? A. Influence…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: ____ cells are hormone-secreting neurons or cells derived from neurons.

A: Answer- There are some cells that are specialized to secrete hormone in the hypothalamus of the…

Q: What is a chemical substance that is released from a cell and has a local effect on the same cell…

A: The correct option is B . Paracrine  chemical signal .  Unlike Autocrine chemical signalling , the…

Q: Which of the following gland secretes insulin?A. Pituitary B. Thyroid C. Pancreas D. Ovaries

A: Insulin is a hormone which maintains the blood sugar level balance and keep it in normal range i.e…

Q: To determine: The hormone which is present in higher amounts in blind women and protects the from…

A: Cancer is a state or condition in which cells grow uncontrollably. Cancers come in a variety of…

Q: Steroid hormones are often given to cattle and other farm animals to build body mass and thus…

A: Steroid hormones are cholesterol-derived organic compounds that can dissolve in lipids. They can…

Q: A ______ requires the use of a second messenger system to enter a cell. a. steroid hormone c.…

A: Secondary messengers are the chemicals that activates the cascade of reactions inside the cell when…

Q: The organ of Corti contains receptors that signal in response to______ . a. heat b. sound c. light…

A: Introduction: The ear is the main hearing organ of our body. It has 3 parts: An external or outer…

Q: Hormones can be released into the blood ... a) ... in large quantities in response to stimuli. b)…

A: Ans- A  Explanation- Hormones are the molecules that are released from the endocrine glands into the…

Q: Sodium and potassium play a key role in the generation of____? A. hormones B. New tissue C. Nerve…

A: Introduction :- Sodium is a mineral that is found in salt as one of the chemical elements. Potassium…

Q: Chemical signals called cytokines are released into the extracellular fluid by bone stem cells in…

A: The cell signaling is very much important for the cellular processes like cell division, growth and…

Q: In animals, pheromones can affect many different behaviors. Because humans do produce a number of…

A: A chemical produced by certain species that is responsible for affecting the physiology or behavior…

Q: Define pheromones, and provide an example of pheromone activity in humans.

A: Pheromones are mostly present in social animal it helps to communicate.

Q: A tropic hormone is one whose function is to Answers: A.stimulate growth and development. B.…

A: A hormone is a regulatory substance produced in an organism and transported in tissue fluids such as…

Q: Which hormone causes Leydig cells to make testosterone? a. FSH b. LH c. inhibin d. estrogen

A: Hormones are the non-nutrient chemical compounds that are present in the ductless glands. The…

Q: Given these events:(1) activation of cAMP(2) activation of genes(3) alteration of enzyme…

A: c. 2,3

Q: A scientist hypothesizes that the pancreas’s hormone production is controlled by neural stimuli.…

A: Insulin is the hormone made in the pancreas, the gland situated behind the stomach. It helps the…

Q: Select the best answer or answers from the choices given: Some hormones act by (a) increasing the…

A: Hormones are chemicals that act as messengers and are involved in signal transduction. The result of…

Q: After hormones are secreted from the cell into the extracellular space, where do they travel? A. to…

A: Hormones are chemical substances that are produced in minute quantities and act as intracellular…

Q: How did most Westerners become exposed to and addicted to opioid drugs in the 18th and 19th…

A: Opioids are a class of drugs that include the illegal drug heroin, synthetic opioids such as…

Q: How will you explain why men produce higher levels of testosterone than women? A. Testosterone is…

A: In adult males, an important hormone is responsible for specific physical characteristics, the…

Q: A small molecule binds to a G protein, preventing itsactivation. What direct effect will this have…

A: Cyclic adenosine monophosphate (cAMP) is the secondary messenger used by a majority of hormones. In…

Q: Please answer both (A) Explain why all cells do not respond to all hormones. (B) Describe the…

A: Hormones are the chemical messengers  which are required in very low amounts and are secreted from…

Q: Baldness in humans is correlated with what chemical(s)?  a. increase testosterone b. decrease male…

A: Hair is a fibrous protein filament composed mainly of keratin.  It is a characteristic feature of…

Q: B If hormones travel where ever blood goes, why don’t all cells respond to all hormones?

A: B Hormones are organic molecules involved in signal transduction that are released by the endocrine…

Q: Jenny is identifying insects and finds a camo moth. A camo moth looks like the bark of a tree and…

A: The camouflage and mimicry are an interesting adaptation in living organisms that helps the acting…

Q: The pineal gland produces melatonin, which helps regulate sleep by binding receptors in several…

A: Answer ; Option (B) is right. - the pineal gland is an endocrine gland.

Q: Endocrine glands ________. a. secrete hormones that travel through a duct to the target organs b.…

A: The endocrine system is a network of glands that secretes the hormone. There are eight major…

Q: What effect would caffeine have on the production of cortisol in the adrenal gland ? a. Can’t tell…

A: Caffeine is primary constituent of coffee seed, it shows psychoactive activities.  part of a group…

Q: Estrogens stimulate the development of ______. sperm production facial hair a low-pitched…

A: The estrogen is the major female sex hormone and it is responsible for the regulation and…

Q: Which statement about the adrenal gland is false?  A)The adrenal medulla responds to signals from…

A: adrenal glands, are two small glands located above the kidneys.The outer part is called adrenal…

Q: Using his antennae, the male moth finds female moths by following a trail of airborne chemicals,…

A: Option (c) is the correct answer .

Q: every individual is designed to have an organ system with its corresponding parts and functions. (a)…

A: Testosterone is a chemical substance known as hormone and it can have quite wide ranging effects…

Q: When experiencing stress, the effects of the epinephrine circulating in the body will result in a.…

A: Epinephrine is a hormone which is also known as adrenaline. This is the ' flight or fight' hormone…

Q: What is the purpose of androgen binding protein by Sertoli cells of the testes? a. Potentiates the…

A: Follicle-stimulating hormone(FSH)primary work is stimulating spermatogenesis but also intimate…

Q: A 38-year-old male is upset about his low sperm count and visits a "practitioner" who commonly…

A: The reproductive system, an important organ system in the body that plays an important role in…

Q: Chemicals that affect certain body organs a. testosterone b. hormones c. estradiol d. inhibin

A: there are many different hormones in the human body, they can be divided into three classes based on…

Q: During adolescence, _ exposed to hormones that it hasn't been exposed to before and at levels it…

A: There are several hormonal changes that occurs during the transition of a child into the teenage.…

Q: Plant hormones______ . a. trigger the same responses in animals and plants b. are cues for tropisms…

A: Introduction  Plant hormones are signal molecules produced by plants and present in extremely low…

Q: 1  The following are true regarding modular organisms such as plants  a. respond to stimulus…

A: Modular organism means, whole body not come as single individual or unit. It generally consist of…

Q: After a hormone binds to a receptor, the receptor then transmits a signal from the A. cell B.…

A: Hormones are chemical or regulatory substances, produced in an organism and act like messenger…

Cell Signaling

It allows cells to perform various cellular activities, coordinate, and interact with other cells. All cells of an organism receive signals from their environments and respond accordingly. Even the unicellular eukaryotes receive signals secreted by other cells and respond. In the case of yeast, mating takes place by signaling between the yeast cells. Communication by cell signaling in a multicellular organism has become a vast and important part of various fields of biology.