Atrazine, a weed killer widely used in agriculture, is an chemical that can alter the reproductive systems in male frogs, according to scientists. Researchers found that long-term exposure to low levels of atrazine can chemically castrated three-quarters of laboratory frogs and turned one in 10 males into females. Scientists think that the pesticide interferes with sex hormones, such as estrogen and testosterone. From the information given to you, what term describes atrazine best? a. lipid-soluble b. endocrine disruptor c. mutagen d. genotoxic

Q: G5

A: Homeostasis confirms ideal conditions for enzyme functioning and all cell activities throughout the…

Q: interested finding a way to control mating behaviors in humans. He'd like a way to zap a part of the…

A: The hypothalamus is responsible for oxytocin production. It can enter the bloodstream via the…

Q: How would you determine that the sexual dimorphism in throat patch coloration in male hummingbirds…

A: Sexual dimorphism is known as a condition in which the two sexes that belong to the same species are…

Q: Have you ever watched an old movie or television show where the expression “the rabbit died” meant…

A: Introduction: In the year 1931, an early pregnancy test named the rabbit test was developed by…

Q: Which of the following statements are true? a. ) Almost all invasive species are plants. b.…

A: Invasive species are non-native, or alien, organisms (plant, animal, fungus) that spread and cause…

Q: When the fitness increment of increased male function results in a small cost in fitness of female…

A: Hermaphrodites are organisms that possess both female and male sex organs and can produce male…

Q: Design another experiment to determine whether the signalthat controls male development is a…

A: Hormones are the form of signalling protein which takes part in various metabolic pathways such as…

Q: QUESTION 1 Which of the following is not a vertebrate orexic agent? • Agouti-related peptide •…

A: QUESTION 1: The correct answer is Anandamide. Anandamide is a neurotransmitter that acts as an…

Q: A student want to study the Moulting in mosquitoes. He very much clear about the mechanism of…

A: The moulting process in insects including mosquitoes is known as ecdysis that involves the shedding…

Q: Which statement about menopause is  most correct? A. Menopause has to be adaptive because…

A: C. Several hypotheses for menopause as an adaptation have been proposed, but more evidence is…

Q: Compared to organisms that reproduce sexually, organisms that reproduce asexually are - O A. more…

A: Introduction  Reproduction is the characteristic of all biological species present on the Earth. All…

Q: how this pill when taken by a male will work to prevent pregnancy.

A: Contraception refers to the various methods that are utilized to avoid pregnancy. These methods are…

Q: Which of the following statements is NOT TRUE under the Costly Signaling Theory? Group of answer…

A: Costly signalling theory is often interchangeably used with the 'Handicap principle'. CST defines…

Q: As described in the Biology and Society section, some species (including some endangered species)…

A: drawbacks might a parthenogenesis program have on the well-being of the species it targets are :

Q: You want to breed turtles and choose to incubate turtle eggs at the highest temperature (36°C) in…

A: Fertilization is the process by which the male and the female gamete fuse together. In most species,…

Q: How would mutations that completely ablate the function of the androgen receptor impact the…

A: Introduction  Humans have 23 pairs of chromosomes; 22 pairs are called as Autosome while 23rd pair…

Q: Which of the following is an advantage of asexual reproduction?   A.   The population can…

A: The question is asking us to identify the advantage of asexual reproduction from the given options.

Q: Describe the role of hormones in human reproduction

A: Humans have a sexual mode of reproduction in which two parents participate to produce offspring. The…

Q: What will be the independent & dependent variables in this experiment?

A: 1. Dependent variable -   a. a Number of urchins used   b.  Concentration of Carbon dioxide  c.…

Q: Some drugs have the potential to cause birth defects if taken by pregnant women. Most women know the…

A: Teratogen Any agent that causes birth defect to a developing fetus at any stage of pregnancy. Those…

Q: In seahorses, males incubate and care for offspring. Thus, the males are more likely to be tied up…

A: Sexual behavior refers to the actions, activities, and interactions related to the expression of…

Q: When genetic males lacked the enzyme that converts testosterone to dihydrotestosterone, what…

A: The correct option is B. They looked female at birth but developed male structures at puberty .

Q: Labour is controlled by the nervous and endocrine systems through a positive feedback system. In…

A: Homeostasis is the term that refers to the maintenance of order and control in any mechanism, and in…

Q: Which of the following statements correctly identifies the differences between spermicidal jelly and…

A: Spermatid jelly and condom both are over the counter birth-control measures that prevent sperm from…

Q: Hormones are often used to control the development and metabolism of agriculturally important…

A: Hormones are a kind of chemical composition that regulates the growth and other metabolic processes…

Q: Urgent requirement

A: Homeostasis ensures ideal conditions for enzyme functioning and all cell activities throughout the…

Q: H90

A: Introduction :Homeostasis is the term that refers to the maintenance of order and control in any…

Q: In a hypothetical bird species, the males' circulating blood levels of testosterone stay relatively…

A: Testosterone is a hormone that is primarily produced by the testes in males and the ovaries in…

Q: The zona pellucida is important in mammals because it...

A: The zona pellucida is a thick extracellular layer that covers all mammalian eggs and preimplantation…

Q: A biological hormone feedback system causes puberty to begin. What occurs during this process? A.…

A: Introduction In relation to reproduction, the life cycle of an individual is divisible into three…

Q: If you add a chemical to an egg cell that prevents the fast and slow blocks from occurring but does…

A: The fast block to polyspermy can be accomplished by altering the electric potential of the egg…

Q: 0.3

A: SR = 0.3   Non-SR = 0.7   The probability that a female will mate with non-SR if she mates once:…

Q: The graph describes the change in egg membrane potential associated with fertilization in the sea…

A: Reproduction is the process of producing a new generation of organisms from the existing ones. It…

Q: The cells marked in the photomicrograph (A) contain the enzyme 'aromatase' (B) contain the enzymes…

A: The magnified digital image of an object taken through a microscope is termed as photomicrograph or…

Q: According to the sexy son hypothesis, females select mates with extreme secondary sexual traits…

A: The sexy sons hypothesis suggests that females choose mates with attractive traits because they…

Q: Sexual behavior in animals is largely controlled by estrogen levels in the female and the occurrence…

A: Endocrine glands lack ducts and are hence, called ductless glands. Their secretions are called…

Q: 7: Gorillas exhibit sexual dimorphism, which means ... Group of answer choices A: the males are less…

A: The term sexual dimorphism is used to explain the morphological differences (structure, body-color,…

Q: per season and males may fertilize the eggs of multiple females. Do you think that the sea bass are…

A: Marine fishes survive and prefer mating in salty water. They may be found individually or in groups…

Q: Hox genes are activated in specific regions of the body (e.g. back of the head) and activate other…

A: Hox genes encode transcripts factors that are important for numerous developmental processes in…

Q: In 3-5 sentences, describe how organisms like the sea turtle might adapt to the rise in ocean and…

A: To determine: How sea turtle adapts to the rise in ocean and sea temperature. Correlation between…