The options A and C depict the negative feedback mechanism that occur in the endocrine system of the reproductive system, option 4 is incorrect. So the best option to go with in the given options is B.
The anterior pituitary and hypothalamus are stimulated by estrogen from the ovaries to release increased GnRH, LH, and FSH.
The female reproductive system is a marvelously intricate mechanism that involves constant communication between the ovary and brain areas. The messengers that control the monthly cycle are hormones released by the ovary, pituitary, and hypothalamus.
The pituitary gland and hypothalamus, which are both located in the center of the brain, exchange blood during communication. The hypothalamus creates a number of neuroendocrine substances, or hormones. Gonadotropin-releasing hormone, or GnRH for short, is the most crucial hormone for reproduction. It is rhythmically released every 60 to 120 minutes.
Follicle stimulating hormone (FSH), which initiates the formation of follicles (eggs), and estrogen, the main female hormone, are both produced by the pituitary gland when GnRH encourages it to do so. The other reproductive hormone produced by the pituitary, leutinizing hormone (LH), aids in the maturity of eggs and acts as a hormonal trigger for ovulation and the release of eggs from the ovary.
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Complete Question :-
figure 1. a model of an endocrine signaling pathway showing involves body pats and hormones. GnRH = gonadotropin-releasing hormone , LH= luteinizing hormone and FSH = follicle-stimulating hormone .
figure 1. shows a model of the endocrine signaling pathway that regulates ovulation. which of the following observations would provides evidence of a positive feedback mechanism in this system?
the atmosphere is held together by
Answer: Earths Gravitational Attraction.
Explanation:
The atmosphere is held together by Earth's Gravitational force of attraction.
What is gravitational attraction?
Gravitational attraction is the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface.
This force of attraction holds every object in the universe, including the atmosphere.
Thus, the atmosphere is held together by Earth's Gravitational force of attraction.
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what is your personal responsibility towards the environment? give 100 words
Answer:
My personal responsibility to the environment, as cataloged in the Brundtland report, is sustainability, I mean, ensuring that future generations will be able to enjoy the same quality and quantity of resources that I can have at this time, to I plan to make efficient use of services such as drinking water and electricity, make a correct separation at the source of solid waste so that the reusable material can be used and not cause unnecessary pressure on the earth's mantle, on the other hand, make a more continuous use of reusable or biodegradable material, in order not to increase pollution by waste that usually has as its final destination, in many cases, water sources such as the oceans, as well as reduce my consumption and that of my family of meat products, and products with chlorofluorocarbon gases, thus reducing the amount of gases that are deployed to the atmosphere and could destroy it.
Explanation:
The environmental commitment is something extremely important to allow there to be a true environmental sustainability beyond an advertising attractor, for this it is required that each person identify activities in which they can reduce the generation of pollutants, either through solid waste, dumping or gases. that affect the ozone layer such as methane or chlorofluorocarbon gases, these activities can regularly be carried out from our own homes and, although they may involve additional work, they will allow future generations to enjoy an environment with a quality similar to or better than the one we have currently.
Instructions: The Virtual Populations Lab is on the lesson assessment page. Gather data to evaluate Sebastian's Snorkel Spot's claim that a new factory is polluting the coral reef. Follow the instructions as you move through the lab and record your data and observations in the lab report.
There are different kinds of reports. The data on Populations Lab Report of Sebastian’s Snorkel Spot is written below;
Sebastian’s Snorkel SpotThe Objectives of the study was know carefully watch the conditions of the coral reef to known if the new factory is polluting the reef.
The Hypotheses was that an increase in pollution levels will lead to a decrease in the health of the coral reef.
Procedure used for the study: the data on water quality surrounding the reef was taken (measures) to know the clarity and also the percentage of dissolved oxygen.
The study also collected data on the percentage of live coral coverage and number of population of juvenile and mature parrotfish that is present in the reef.
The observation was that at the research phase, the factory was not using nutrient-removal treatment on the water it releases into the environment and there was lots of leftover nutrients in the water that boast algae growth, etc.
Data was collected was on the variables given in the data table given below;
Water Clarity (m) : week 0- 4 , week 1- 2, week 2- 4 , etc.
Dissolved Oxygen Level (mg/L) : week 0- 4y, week 1- 6, week 2- 8, etc.
Percentage of Live Coral Coverage (%) week 0- 20, week 1- 24,etc.
The data above were analyzed and the conclusion drawn was that an increase in the pollution Levels will lead to a decrease in the health of the coral reef.
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Answer:
Populations Lab Report
________________________________________
Instructions: The Virtual Populations Lab is on the lesson assessment page. Gather data to evaluate Sebastian's Snorkel Spot's claim that a new factory is polluting the coral reef. Follow the instructions as you move through the lab and record your data and observations in the lab report.
Title: Sebastian’s snorkel spot
Objective(s): The objective is to watch the conditions in the coral reef to prove that the factory is polluting the reef.
Hypotheses: If pollution levels increase, then the health of the coral reef with decrease. levels increase, then the health of the coral reef will
Variables:
Dependent- heath of the reef by water clarity, dissolved oxygen, live coral coverage, and stoplight parrot fish population.
Independent- the additional pollution and runoff from the factory
Procedure:
Take measurements or water clarity and dissolved oxygen levels to measure the water around the reef or five? weeks record results
Measure the percent of live coral coverage for five? weeks record results
Count population the fish for five? weeks record results
During the research phase, you found that the factory is not using nutrient-removal treatment on the water it releases. Excess nutrients in the water encourage algae growth, which can smother coral. To monitor the water quality and health of the coral reef, you will collect data on five factors: water clarity, dissolved oxygen levels, percentage of live coral coverage, number of juvenile parrot fish observed, and number of mature parrotfish observed.
Data:
Record your data from the virtual lab in the data table.
Week Water Clarity (m) Dissolved Oxygen Level (mg/L) Percentage of Live Coral Coverage (%) Number of Juvenile Parrotfish Number of Mature Parrotfish
0 6 14:00 35 8 12
1 4 12:00 30 7 12
2 3 10:00 25 7 11
3 3 9:00 25 5 11
4 2 9:00 20 4 9
Data Analysis:
Select one abiotic factor that was monitored, either water clarity or dissolved oxygen level, and create a line graph showing the measurement of the abiotic factor over time. Then select one biotic factor that was monitored, either coral coverage, juvenile parrotfish, or mature parrotfish, and create a line graph showing the measurement of the biotic factor over time.
Insert Chart [Hint: don't forget to create a line graph to analyze your data]
I cant include this part
Conclusion: I hypothesized that if pollution levels increase, then the health of the coral reef with decrease. My hypothesis was proven correct, the four-week time that had been recorded showed that every week the biotic and abiotic features would decrease. My graph shows the decrease in four weeks due to the factory.
Be sure to answer the following reflection questions as a summary in the conclusion of your lab report:
• Was your hypothesis correct? Why or why not? Be sure to include evidence from the data you collected to support your conclusion.
• Based on your data, describe the overall trend for each of the five factors that were measured?
• What information do your graphs show? Describe the correlation between the two factors that you graphed
Questions:
Using what you have learned in the lesson and the virtual lab activity, answer the following questions in complete sentences:
1. Identify the abiotic and biotic factors in this lab.
The water clarity and the dissolved oxygen level were abiotic and coral coverage, and the fish were biotic.
2. Describe the symbiotic relationship between each of the organisms.
Coral is a habitat for fish and if the coral isn’t in good condition the water most likely isn’t so the fish would decrease.
3. Explain how the limiting factors affect carrying capacity in each population.
Without proper healthy coral the fish would decrease and without livable water the fish will die?
Explanation:
i got a 100
what might happen to a farm field if earthworms suddenly
disappeared.
Answer:
Explanation:
Arguably without earthworms in our soils, life could vanish pretty quickly. We would have less food, more pollution, and more flooding. No matter how cute a panda looks, it is Darwin's “lowly” earthworms that are doing dirty, but crucial, work in the soil below.
4
Developing countries tend to have
high birth rates. Why?
A. better access to birth control
B. more education for women
C. parents have more offspring to help with
chores
D. less risky behavior
11. A forensic anthropologist noted that a set of skeletal remains exhibited the following traits: wide subpubic angle on the pelvis, a completely fused coronal suture, and a skull with a V-shaped mandible. Which description best supports the skeletal findings? a. The skeletal remains most likely belong to a male over the age of 60. b. The skeletal remains most likely belong to a male under the age of 60. c. The skeletal remains most likely belong to a female over the age of 60. d. The skeletal remains most likely belong to a female under the age of 60.
The skeletal remains most likely belong to a female over the age of 60. Option C
How do we identify the skeletal remains?The skeletal remains most likely belong to a female over the age of 60.
A wide subpubic angle on the pelvis is a characteristic of female skeletons.
Completely fused coronal suture is an indication of middle age but could differ from person's to person.
A skull with a V-shaped mandible is also more common in females than males. The age of the individual can be estimated from the fusion of the coronal suture, which typically occurs between the ages of 30 and 40.
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There are two large endocrine glands located in the neck and upper chest region. What is their identity, and what do they regulate?
A Thymus: immune system; thyroid: growth and development
B Thyroid: immune system; thymus: growth and development
C Pancreas: blood glucose levels; adrenal: emergency response
D Adrenal: emergency response; pancreas: blood glucose levels
Answer:
A Thymus: immune system; thyroid: growth and development
Thymus comes under immune system it encompasses thyroid which is responsible for growth and development. The correct option is A.
What is thymus?A tiny gland in the lymphatic system called the thymus produces and develops T-cells, specialized white blood cells.
Your immune system fights sickness and infection with the aid of the T-cells. Before birth, your thymus gland produces the majority of your T-cells.
At the base of the neck, just below the Adam's apple, is the thyroid, a tiny, butterfly-shaped gland.
Thyroxine (T-4) and triiodothyronine are the two primary hormones produced by the thyroid gland (T-3).
Every cell in the body is influenced by these hormones. They support how quickly the body consumes carbohydrates and lipids.
Thymus is a part of the immune system and contains the thyroid, which is in charge of growth and development.
Thus, the correct option is A.
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Please help this is due today and I got stuck
Based on the bands of the gel electrophoresis;
Suspect C can be excused because he has only 4 out of 6 matches to sample B.Suspect D can be excused because he has only 4 out of 6 matches to sample B.Suspect E should be included because he has only 5 out of 6 matches to sample B.Suspect F should be included because he has only 5 out of 6 matches to sample B.What is gel electrophoresis?Gel electrophoresis is a molecular biology technique used to separate macromolecules such as DNA, RNA, and proteins.
Based on their size and charge, DNA fragments (or other macromolecules, such as RNA and proteins) are separated using the gel electrophoresis process.
In a technique, when a sample has similar bads to a control, the sample is usually identified as similar to the control.
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Determine whether the statement is true or false, and why. "It is impossible for any two people to have the same genetic fingerprint."
A. False, it should read "While it is not impossible for two people to have the same genetic fingerprint, it is very unlikely."
B. False, it should read "It is impossible for two people to have the same genetic fingerprint, but it is not difficult for someone to make a fake one."
C. True
D. False, it should read "It is possible for two people to have the same genetic fingerprint, it occurs frequently, and there must be other evidence in order to convict someone."
False; it should say "There must be other information in favor to convict anyone." It is conceivable for two persons to have the same findings support the hypothesis, and it happens frequently.
What three sorts of fingerprints are there?However every fingerprint is unique, they always fall into one of three main categories: its whorl, which resembles a whirlpool, loop loop, which resembles a teardrop, and the arch, which resembles a pass of a hill.
Explain what a fingerprint is?The sinusoidal grooves on the tips of the hands and toes leave a fingerprint impression. Since each person's finger has a different pattern of ridges that does not change with age or growing, fingerprints provide an unfailing method of identity documents.
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Which statement matches what the graph is showing?
A - As distance increases, gravity decreases.
B - As distance increases, gravity increases.
C - Distance increases as gravity increases.
During a specific part of the cell cycle, a cell will divide into two daughter cells. What is that process called?
A.cell division
B. Metaphase
C.interphase
D. G1 phase
Answer:
Cell division
Explanation:
Just use this as an answer
Which statement correctly compares the "Analysis" and "Conclusion" sections of a lab report?
Only the “Conclusion” section describes errors that occurred during the experiment, and only the “Analysis” section suggests further research.
Only the “Analysis” section includes specific data comparisons, and only the “Conclusion” section suggests further research.
Only the “Analysis” section discusses whether the original hypothesis was supported, and both sections include graphs of data.
Only the “Conclusion” section discusses whether the original hypothesis was supported, and both sections suggest further research.
The statement that correctly compares the "Analysis" and "Conclusion" sections of a lab report is as follows: Only the “Conclusion” section discusses whether the original hypothesis was supported, and both sections suggest further research (option D).
What is an experiment?Experiment is a test under controlled conditions made to either demonstrate a known truth, examine the validity of a hypothesis, or determine the efficacy of something previously untried.
An experiment conducted in a laboratory usually follows the scientific method, which is made up of the following components:
Constructing a hypothesisTesting the hypothesis via experimentationAnalysis of resultsConclusionHowever, the difference between the analysis and conclusion sections of a lab report is as follows: only the “Conclusion” section discusses whether the original hypothesis was supported, and both sections suggest further research.
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if a total solar eclipse occurs during a new moon phase and a total moon phase, why do we not observe one solar eclipse and one lunar eclipse per month?
Answer:
Bottom line: If the Earth and moon orbited on the same plane around the sun, we'd have a total solar eclipse – and a total lunar eclipse – every month. But we don't, because the moon's orbit is inclined to Earth's orbit by about 5 degrees.
Explanation:
Hope it helps you!
HELP
The structure of cellulose is shown below. What monomer combines and
forms cellulose?
For more than a decade, Greenland has been losing about 600 trillion pounds of ice per year. The change in the distribution of weight on Earth changes how Earth wobbles on its axis. How can a change in Earth's wobble affect Earth's climate ?
A. Wobbling away from the sun can cool down regions.
B. Wobbling in the direction of the sun can cause large ice sheets to form
C. Wobbling away from the sun can cause polar ice caps to melt.
D. Wobbling in the direction of the sun can cool down regions .
Explain what happens to the body temperature of the rattlesnakes as day turns to night
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It bears repeating that reptiles potentially dangerous to man account for only a small proportion of Nevada’s herpetofauna. Of the twenty-five snake species found here, only the six rattlesnakes pose any possible threat. Similarly, of twenty lizard species native to Nevada, only the Gila monster is venomous. The vast majority of reptiles found in Nevada (and elsewhere) are completely harmless!
I HOPE IT HELPS❤Which terms best complete the sentence? "Evolution acts on _________ while natural selection acts on __________"
-desire to evolve
-acquired traits
-individual organisms
-populations
-different species
-different kingdoms
G WARM-UP Which of the following factors do you think can affect the size and structure of a population? the number of individuals who enter a population the number of individuals who exit a population limitation of resources natural events human activity DONE Intro 2 of 3
Answer:
All of the factors listed can affect the size and structure of a population.
Please help due by 5:50 :( Will give brainless...
Answer:
well false and mutual is
Cells were treated with a chemical that inhibits the first step of the electron transport chain. How would this affect the levels of the inputs and outputs of the electron transport chain?
Answer:
The levels of inputs and outputs will be negatively affected
Please find the detailed explanation below
Explanation:
The electron transport chain consists of a series of molecules that transfers electrons to one another in a group called COMPLEXES. The major aim of the ETC is to build a proton gradient needed for the synthesis of ATP. The first step in the ETC is as follows:
The process of ETC starts when two electron carriers/donors viz: NADH and FADH2 transfers their electrons to COMPLEX I. If this does not occur, the ETC cannot function. Hence, in a case where cells were treated with a chemical that inhibits the first step of the electron transport chain, the input and output (ATP) will be greatly affected in the sense that other inputs will not be used or the output will not be produced.
5. A student draws the model shown below.
Y
Sun
х
X
Earth
Which of these best compares the conditions at Location X and Location Y?
There are more hours of daylight at Location X than at Location Y.
What is Daylight?This refers to the light during the day as a result of the source of light known as the Sun.
Since Location X is in close proximity with the Sun, it will have more hours of daylight when compared with location Y.
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How does exhaling remove waste from the body? Explain the systems that make this happen, using complete sentences.
Exhaling removes waste from the body by expelling carbon dioxide through the respiratory system.
Exhaling plays a crucial role in removing waste from the body, particularly in the form of carbon dioxide (CO2), a byproduct of cellular respiration. The respiratory system, composed of the lungs and airways, is primarily responsible for this process.During inhalation, air containing oxygen is drawn into the lungs through the nose or mouth. Oxygen then diffuses across the lung tissue into the bloodstream, where it binds to hemoglobin and is transported to cells throughout the body. In the cells, oxygen is utilized in metabolic processes, generating energy and producing CO2 as a waste product.When we exhale, the diaphragm and intercostal muscles relax, causing the volume of the chest cavity to decrease. This action increases the pressure within the lungs, and air rich in CO2 is expelled from the body through the airways. The CO2 is removed from the bloodstream and eliminated from the body, reducing the waste buildup.Overall, the respiratory system's main function is to facilitate the exchange of gases, allowing oxygen to enter the body and carbon dioxide to be eliminated. Exhalation plays a vital role in removing waste by expelling CO2 and maintaining a balanced gas composition within the body.For more questions on respiratory
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Select terms from the lists to complete the sentence.
The model predicts that the atmosphere will experience a net
approximately
PgC/year.
in the amount of carbon flow of
The model predicts that the atmosphere will experience a net increase of approximately 1 PgC/year in the amount of carbon flow.
What does the statement mean?Given the prevailing situation it is clear that more carbon will enter than leave our atmosphere annually.
This increase in atmospheric carbon could significantly enhance levels of carbon dioxide- a known greenhouse gas responsible for exacerbating climate change. Carbon dioxide functions as a greenhouse gas, exhibiting the capacity to ensnare and retain heat within the Earth's atmosphere.
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Correct question:
Select terms from the lists to complete the sentence.
The model predicts that the atmosphere will experience a net --- of --- in the amount of carbon flow.
1. increase
2. PgC/year
3. PgC/year
Which statement is true of evergreen coniferous trees?
some leaves remain on the tree year-round
no organisms can eat the seeds of evergreen trees
evergreen trees only grow during the winter
there are no evergreen trees in the taiga
The statement that is true of evergreen coniferous trees is that some leaves remain on the tree year-round. The correct answer is A.
Evergreen trees have adaptations that allow them to retain their leaves, also called needles, throughout the year.
Unlike deciduous trees that shed their leaves in the fall, evergreen trees continuously photosynthesize and produce food throughout the year.
This adaptation allows evergreen trees to grow in areas with harsh climates, such as the taiga, where the winters are long and cold.
Additionally, evergreen trees produce seeds that are often eaten by a variety of organisms, including birds and small mammals.
The seeds of some evergreen trees, such as pine nuts, are also a food source for humans. Therefore, the statement that no organisms can eat the seeds of evergreen trees is false.
Lastly, the statement that there are no evergreen trees in the taiga is also false.
The taiga is dominated by evergreen coniferous trees such as spruce, fir, and pine, which are well-adapted to the cold and snowy conditions of the region.
Therefore, the correct answer is A.
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Question
Which statement is true of evergreen coniferous trees?
A) some leaves remain on the tree year-round
B) no organisms can eat the seeds of evergreen trees
C) evergreen trees only grow during the winter
D) there are no evergreen trees in the taiga
True or False? Fiber can reduce cholesterol levels and risk of heart attack, and can also prevent constipation.
How is a multicellular organism structured?
O Cell, tissue, organ, organ system
O Tissue, cell, organ system, organ
O Organ, tissue, cell, organ system
O Tissue, atom, cell, organ
1. Why is the sodium-potassium transport mechanism called a "pump"?
Answer:
It pumps Na+ (Sodium) into the cell, and it pumps K+ (Potassium) out of the cell.
Explanation:
It uses active transport, which is why it is a pump; pumps use energy in the form of ATP.
It's simply denotes to
entrance of Sodium ion(Na+)Exit of potassium ion (K+)This happens because of density tendency
They use the energy source as ATP or adrenosine tri phosphate
Why aren't sex linked genotypes written with just a capital and lowercase letter, like most genetic problems?
Sex-linked genotypes use different notation due to their unique inheritance pattern on the X and Y chromosomes.
Sex-linked genotypes are written differently because they are inherited through the X and Y chromosomes, which determine an individual's sex.
Standard genetic notation, using capital and lowercase letters, represents dominant and recessive alleles for autosomal genes, which are not sex-determining.
Sex-linked traits, such as colorblindness, are carried on the X chromosome. Males have one X and one Y chromosome, while females have two X chromosomes.
This results in different inheritance patterns for males and females, requiring a distinct notation system to accurately represent sex-linked genotypes.
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Give long answers to the following questions. [3x8=24] 9. Mention characteristic features of family Solanaceae with floral formula and floral diagram. Give two examples (Scientific names) of medicinally important [4+1+2+1] plant species of this family.
The plants exhibit pharmacological significance due to their alkaloid content, which can have potent effects on the nervous system and various bodily functions.
Family Solanaceae, commonly known as the nightshade family, is a diverse group of flowering plants characterized by several key features. The floral formula of Solanaceae is typically represented as (5) K (5) C(5) A(2+2) G(2), indicating five sepals, five petals, five fused stamens (with two longer and three shorter ones), and a superior ovary composed of two fused carpels. The floral diagram represents a radial symmetry with overlapping sepals and petals, and the stamens and pistil positioned in the center.
Solanaceae encompasses many medicinally important plant species. Two notable examples are:
Atropa belladonna: Also known as deadly nightshade, Atropa belladonna contains alkaloids such as atropine and scopolamine, which have various medical uses. These compounds have anticholinergic properties and are used in medicine to dilate pupils, treat gastrointestinal disorders, and relieve bronchial spasms.
Datura stramonium: Commonly called jimsonweed or thorn apple, Datura stramonium contains alkaloids like scopolamine and hyoscyamine. It is used for its antispasmodic and bronchodilatory properties and has been employed in traditional medicine to relieve asthma symptoms and treat skin conditions.
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Look at the incomplete equation below. What does Ek represent?
In the given equation, Ek represents the kinetic energy of an object.
Kinetic energy (Ek) is a form of energy associated with the motion of an object. It is dependent on both the mass (m) and the velocity (v) of the object.
The equation Ek = (1/2)m\(v^2\) represents the formula to calculate the kinetic energy of an object.
The symbol "Ek" is commonly used to represent kinetic energy in scientific calculations and equations. By plugging in the values of mass and velocity into the equation, one can calculate the amount of kinetic energy possessed by the object.
The kinetic energy of an object increases with both its mass and velocity. As the mass increases, the object has more particles in motion, contributing to higher kinetic energy.
Similarly, as the velocity increases, the speed at which the object moves also increases, resulting in greater kinetic energy.
Therefore, understanding and calculating kinetic energy is important in various scientific and engineering applications, such as studying the movement of objects, analyzing collisions, or designing efficient systems.
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Question
Look at the incomplete equation below. What does Ek represent?
Ek =----- x m x v2