Mensuration, ovulation, pregnancy and sexual response are regulated by femal reproductive hormones.
Hormones are chemical messengers that are produced in the secretory cells of the endocrine glands.
There are different types of hormones, some of which functions to regulate the female reproductive system.
Examples of such hormones are:
Follicle-stimulating hormone (FSH): It stimulates development of the maturing ovarian follicle and controls ovum production in the female.Leutenizing hormone (LH): It triggers ovulation (the release of a mature ovum from the ovary).Oestrogen: It promotes the maturation and release of an ovum in every menstrual cycle (mensuration).Progesterone: It prepares the endometrium for the reception and development of the fertilised ovum. This helps the fertilised ovum to be implanted into the uterus to establish pregnancy.Learn more here:
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Can dependent variables be manipulated?
Answer:
The Dependent and Independent Variables
The independent variable is the variable that is controlled and manipulated by the experimenter. ... The dependent variable is the variable that is measured by the experimenter. In our previous example, the scores on the test performance measure would be the dependent variable. Hope this helps leave heart c:
Assignment 2
1. In a tabular form, outline the functions of the following parts of the human respiratory
system
a. Nasal passages
b. Nasal hair
C. Mucus membrane
d. Pharynx
e. Epiglottis
f. Glottis
g. trachea
h. Rings of cartilages
i Larynx
j. Alveoli
please help
Answer:
a. The function of the nasal cavity is to warm, moisturize, and filter air entering the body before it reaches the lungs. Hairs and mucus lining the nasal cavity help to trap dust, before it reached the inner portions of the body.
b. It filtered the air to protect you from illness irritation of the respiratory tract
c. It traps smaller particles like pollen or smoke.
d. It regulate the passage of air to the lungs and food to the esophagus. The throat, is the passageway leading from the mouth and nose to the esophagus and larynx.
e. It seal off the windpipe during eating, so that food is not accidentally inhaled.
f. Glottis opens into the windpipe and is responsible for the production of sound
g. It serves as passage for air and warms it while it passes into the lungs, and protects the respiratory surface from an accumulation of foreign particles.
h. It helps support the trachea while still allowing it to move and flex during breathing.
i. It produces vocal sounds and prevents the passage of food and other foreign particles into the lower respiratory tracts.
j. It takes up the oxygen you breathe in and keep your body going.
Explanation:
a countercurrent heat exchanger enables an animal to
Some animals have adaptions to their circulatory system that enable them to transfer heat from arteries to veins, warming blood returning to the heart. This is called a countercurrent heat exchange; it prevents cold venous blood from cooling the heart and other internal organs.
If an artery that supplies blood to a lung lobe was blocked but ventilation to the lobe was unaffected, how would alveolar gas partial pressures change
If an artery supplying blood to a lung lobe was blocked while ventilation remained unaffected, the alveolar gas partial pressures would be reduced blood flow (perfusion) to the affected lung lobe, leading to a ventilation-perfusion mismatch.
Consequently, the oxygen partial pressure (PO2) in the alveoli would increase, and the carbon dioxide partial pressure (PCO2) would decrease. The increased PO2 is a result of inadequate oxygen uptake by the blood due to the blockage, leaving more oxygen in the alveoli. Conversely, the decreased PCO2 occurs because the reduced blood flow limits the amount of carbon dioxide being transported to the alveoli for exhalation.
This ventilation-perfusion mismatch can lead to hypoxemia, as oxygenation of the blood becomes less efficient. The body may compensate by redirecting blood flow to better-ventilated lung areas, which can help maintain overall gas exchange efficiency. However, the partial pressure changes in the affected alveoli will persist until the arterial blockage is resolved. So therefore if an artery supplying blood to a lung lobe was blocked while ventilation remained unaffected, the alveolar gas partial pressures would be reduced blood flow (perfusion) to the affected lung lobe, leading to a ventilation-perfusion mismatch.
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Genetically modified foods can contain genes from different, unrelated organisms. Please select the best answer from the choices provided
A. True
B. False
What is a vascular plant
Answer: A vascular plant is any one of a number of plants with specialized vascular tissue. The two types of vascular tissue, xylem and phloem, are responsible for moving water, minerals, and the products of photosynthesis throughout the plant. As opposed to a non-vascular plant, a vascular plant can grow much larger.
Explanation: The ferns, gymnosperms, and flowering plants are all vascular plants. Because they possess vascular tissues, these plants have true stems, leaves, and roots. Vascular tissue forms a central column, also called stele, through the plant axis for the transport of different substances. Vascular plants are said to have a true stem, leaves, and roots due to the presence of vascular tissues.
describe how hormones work and explain why they are important?.
Give at least one example in your answer
6 marks
Answer:
Hormones are molecules produced by the endocrine system that send messages to various parts of the body. They help regulate your body's processes, like hunger, blood pressure, and sexual desire. While hormones are essential to reproduction, they are fundamental to all the systems of your body.
genetic tests of humans around the world show that the greatest genetic variation among humans is present in africa. why is that? group of answer choices
Genetic tests of humans show that the greatest genetic variation among humans is present in Africa because, humans originated in Africa and then spread around the world in a series of migratory population bottlenecks. Or in group answer choice is A.
Is Africa the most genetically diverse?Africa, the foremost genetically diverse landmass, is where cutting edge people, Homo sapiens, started. Populaces on other landmasses are plummeted from bunches that moved out of Africa numerous tens of thousands of a long time back. Too African populaces appear solid designs of nonrandom mating. Various relocations to Africa all through early human history have expanded hereditary differing qualities there..Anatomically present day people likely originated in Africa, experiencing populace bottlenecks as a few cleared out to colonize the rest of the world. Since these occasions are decently later, as a result of broad quality stream inside major human populaces, most hereditary variety can be found inside major human populaces.Learn about genetic variation here: brainly.com/question/848479
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1. The solutions in the two arms of this U-tube are separated by a membrane that is permeable to water and glucose but not to sucrose. Side A is half-filled with a solution of 2 M sucrose and 1 M glucose. Side B is half-filled with 1 M sucrose and 2 M glucose. Initially, the liquid levels on both sides are equal.
a.which side will have a higher final volume?
b. What will diffuse first across the membrane and in what direction? (Think about these molecules and their sizes.)
c.In terms of tonicity, are the sides initially hypertonic, isotonic, or hypotonic? Explain your answer.
d.In what direction will water move across the membrane?
Answer:
a. Side B will have a higher final volume because water will move from Side A to Side B until the concentration of water is equal on both sides.
b. Glucose will diffuse first from Side B to Side A because there is a higher concentration of glucose in Side B. Sucrose will not diffuse at all because it cannot pass through the membrane.
c. Both sides are initially isotonic because the concentration of solutes (sucrose and glucose) is equal on both sides.
d. Water will move from Side A to Side B because Side B has a higher concentration of solutes (sucrose and glucose) and therefore a lower concentration of water. This movement of water will continue until the concentrations of solutes and water are equal on both sides.
The organism shown above belongs to A. the protist kingdom. B. the plant kingdom. C. both the animal Kingdom and the protist kingdom. D. the animal kingdom. (the picture is a wolf
Answer:
The answer is D. the animal kingdom
Explanation:
its D because i did that already
An organism is found that has the following traits:
• Produces seeds
• Has a vascular system
• Multicellular
What kingdom does this organism most likely belong in?
O A. Fungi
• B. Plantae
• C. Animalia
• D. Protista
Answer: The Organism that produces seeds, has a vascular system and a multicellular belongs to kingdom of Plantae. Hence option B is the correct answer.
Explanation:
The Plantae kingdom consists of multicellular eukaryotic creatures such as mosses, ferns, conifers, and flowering plants. They are autotrophic, which means that they generate their own food via photosynthesis. A cellulose cell wall, chloroplasts for photosynthesis, and a big central vacuole for storage are all features of plant cells.
Plants can reproduce sexually or asexually, and their life cycles alternate between haploid and diploid stages. They can react to external stimuli such as light and gravity, and they can adapt to their surroundings through processes such as growth and development.
Plants are also essential given that they produce oxygen and sequester carbon.
all pandemics are caused by infectious virus or bacteria that cross from animals to humans.
a. true
b. false
The given statement is FALSE. Many infectious diseases are caused by viruses and bacteria. But there are also other types of pathogens that cause illness.
A pandemic is the global unfold of a brand new disease. Viral breathing diseases, consisting of the ones because of a brand new influenza virus or the coronavirus COVID-19, are the maximum possibly to show right into a pandemic. A pandemic isn't always similar to an epidemic. Coronaviruses are a massive own circle of relatives of viruses. Some coronaviruses purpose cold-like ailments in people, even as others purpose contamination in positive styles of animals, consisting of cattle, camels, and bats. Some coronaviruses, consisting of dog and tom cat coronaviruses, infect handiest animals and do now no longer infect people. Bacterial infections are because of micro organism, and viral infections are because of viruses. Perhaps the maximum essential difference among micro organism and viruses is that antibiotic pills normally kill micro organism, however they are not powerful towards viruses.
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What is the function of enzymes in biological systems?
Answer:
Enzymes help speed up chemical reactions in the human body. They bind to molecules and alter them in specific ways. They are essential for respiration, digesting food, muscle and nerve function, among thousands of other roles.
Explanation:
Brainliest please?
AB⟶A+B+energy . What describes the reaction above
Answer:A chemical reaction is a process that leads to the chemical transformation of one set of ... Non-spontaneous reactions require input of free energy to go forward (examples include ... Dissociation of a molecule AB into fragments A and B ... ΔH° is zero at 1855 K, and the reaction becomes exothermic above that temperature.
Explanation:
The class took a survey of 100 people to find the most popular top 5 pizza toppings. What type of graph should they use lo display their data? a.pie chart , b.scatter plot , c.line graph , or d.bar graph
Answer:
D. Bar graph
Explanation:
A bar graph is one of the types of graph or charts used to display statistical data. They are used to compare data between different groups. A bar graph makes use of either vertical or horizontal bars, which displays the actual data being compared.
Like other graphs, a bar graph contains a X-axis (horizontal), which contains the pizza toppings being compared and a Y-axis (vertical), which contains the number of people who chose each pizza. At the end, it will be easy to determine which pizza toppings is most popular from the bar graph because the pizza with the longest bar suggests the most popular.
Why do we need federal regulations on genetic engineering?
In other words, why do we need the government to have control over genetic engineering for it to work?
Answer:
federal regulations on genetic engineering are necessary to ensure that the technology is used safely and responsibly, and to prevent the potential risks and negative consequences that could arise without proper oversight.
Explanation:
There are several reasons why federal regulations on genetic engineering are necessary:
Preventing unethical practices
Ensuring safety
Protecting intellectual property
Promoting responsible innovation
Government control over genetic engineering is necessary to ensure safety, address ethical concerns, protect traditional agriculture, and mitigate global risks.
Write the importance of medicinal plants in human life.
Answer:
The importance of medicinal plants in human are as follow:
Medicinal plants are considered as a rich resource of ingredients.It is used in drug development either pharmacopeial and none pharmacopeial or synthetic drug.It has it's origin in ancient culture .Using medicinal plant doesn't have any side effects.Answer:
hope it'shelps you have a great day keep smiling be happy stay safe ☺
Besides the outside layer of the cell, where else is the phospholipid
bilayer found?
Answer: The phospholipid bilayer can also be found in organelles that have a membrane such as the nucleus, mitochondria, chloroplasts etc.
Help me please...
The image below shows three bones in the leg: the femur, the fibula, and the tibia.
What is the structural category of the tibia?
long
short
flat
irregular
Tibia is categorized as a long bone. (you can see how long it is in the diagram)
Answer:
long bone
Explanation:
edg 2021
why could a human not absorb enough oxygen through the direct diffusion, as opposed to creatures like flatworms
Humans cannot absorb enough oxygen through direct diffusion because of their larger size, complex body structure, and higher metabolic requirements. Unlike flatworms, humans have a higher demand for oxygen due to their active lifestyle and various bodily functions.
Flatworms, on the other hand, are smaller and simpler creatures with lower metabolic needs, allowing them to rely on direct diffusion for oxygen absorption.
The main reasons humans cannot absorb enough oxygen through direct diffusion like flatworms are:
1. Larger size
2. Complex body structure
3. Higher metabolic requirements
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The two types of chemical groups that make up the side strands of the DNA molecule are…
The structure of DNA is a double helix, which is made up of two connected strands that loop around one another to resemble a tangled ladder. Each strand's backbone is made up of phosphate and deoxyribose groups in alternating fashion.
What two things are the DNA molecule's sides?The double helix, which resembles a twisted ladder, is the shape of DNA. Phosphate and sugar molecules alternately make up the edges of the ladder.
What are the names of the edges of the DNA molecule?Its backbone, which forms the ladder's "sides," is made up of an alternation of the chemicals phosphate and sugar. (The sugar that makes up DNA's backbone is known by the name deoxyribose.) Adenine (A), thymine (T), cytosine (C), and guanine (G) are the four nitrogenous bases sandwiched between both the two sides of this sugar-phosphate backbone (G).
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A raindrop of almost pure water lands on a microbe. Which housekeeping strategy, activated by osmotic pressure, is used by microbes to reduce their internal solute concentration by letting solutes out? choose one: a. Mechanosensitive channels b. Aquaporins c. Diffusion of solutes across the membrane d. Exocytosis of solutes
A raindrop of almost pure water lands on a microbe. Mechanosensitive channels, activated by osmotic pressure, are used by microbes to reduce their internal solute concentration by letting solutes out.
In microorganisms, Mechanosensitive channels are very crucial as they play a significant role in different cellular functions. These channels are triggered by the difference in osmotic pressure in cells.
Different cellular functions performed by them include fluid homeostasis, transfer or expression of genetic information, cell adhesion, cell division, and migration.
Moreover, these channels also make a response to membrane tension by changing their conformation.
As these channels serve as a certain passage for different ions therefore they also activate various cells such as cochlear hair cells, sensory cells, and sensory neurons as a result of force applied to proteins.
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break down foods into smaller molecules through hydrolysis
Food using hydrolysis enzymes to break it down into smaller components.
'What are hydrolytic enzymes?'
Esters, peptides, and glycosides are just a few of the families of biomolecules that are torn apart by hydrolytic enzymes, also known as hydrolases. Protein, lipid, nucleic acid, carbohydrate, and fat molecules are disassembled into their most basic components by hydrolytic enzymes. Brain tumors are thought to be significantly influenced by lysosomal hydrolases, which include phosphatases, carboxylesterases, glucuronidases, and -galactosidase, as well as ribonuclease and acid proteinase.
Hydrolytic enzymes are involved in a range of clinical illnesses, including brain tumors, neurodegenerative diseases like Alzheimer's disease [4] and hereditary metabolic disorders. Several studies have previously emphasized the significance of investigating these enzymes in these conditions.
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What are the side rails of DNA called?
The double helix looks like a twisted ladder—the rungs of the ladder are composed of pairs of nitrogenous bases (base pairs), and the sides of the ladder are made up of alternating sugar molecules and phosphate groups.
There are two sides to the double helix, called the sugar-phosphate backbone, as they are made from alternating phosphate groups and deoxyribose sugars. The “steps” of the double helix are made from the base pairs formed between the nitrogenous bases.
- BRAINLIEST answerer
Answer:
phosphate and deoxyribose molecules
Explanation:
Five ways humans impact the environment are deforestation, desertification, Non-native species, and overharvesting.
Now pick 3 of them and discuss the causes and consequences of them!
ill be marking brainliest
Answer:
hope you help
Explanation:
The loss of trees and other vegetation can cause climate change, desertification, soil erosion, fewer crops, flooding, increased greenhouse gases in the atmosphere, and a host of problems for indigenous people.
Answer: deforestation
Explanation: cutting down of trees without replacement leads to desertification
What type of rock makes up these layers that help us study the history of the earth
Answer:
Sedimentary rocks
By studying sedimentary rocks from the Earth's crust, we can learn about the history of how Earth's surface has changed over time
Explanation:
Answer:
Sedimentary rocks is the answer
Explanation:
What is interesting in human body?
Your body creates 25 million new cells every second. In other words, you will have generated more cells in 15 seconds than there are Americans. The femur, commonly referred to as the thigh bone, is the biggest bone in the human body. The stirrup bone, which is found inside your ear drum, is the tiniest bone.
What is an Human body?The framework of an individual is their body. It is made up of numerous different cell types that combine to form tissues and ultimately organ systems. They guarantee the survival of the human body and equilibrium.
It has a head, hair, neck, trunk, arms, hands, legs, and feet. The trunk includes the thorax and belly.
Human anatomy, physiology, histology, and embryology are all studied in depth. The anatomy of the body differs in well-known ways. The systems and organs of the human body, as well as how they work, are the main topics of physiology. In order to maintain homeostasis—with safe amounts of chemicals like sugar and oxygen in the blood—many systems and mechanisms interact.
Health experts, physiologists, anatomists, and painters all study the human body to aid in their respective fields.
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suppose you discover a cell that is 200 micrometers in diameter. upon closer examination, you find that the dna is not housed within a nucleus and you find no other membrane-bound organelles. this organism is most properly categorized as:
If a cell is found to have no nucleus and no membrane bound organelles on observation then it is categorized as a prokaryotic cell.
Prokaryotic cell: Any cell that does not have a delineated nucleus or membrane-bound organelles. All other forms of life are eukaryotic, whereas organisms in the domains Bacteria and Archaea are based on the prokaryotic cell. Prokaryotic species, on the other hand, are exceedingly prevalent and account for a large portion of the biomass on Earth.The tiniest eukaryotic cells are substantially larger than prokaryotic cells. Prokaryotic cells are often smaller because they lack enough DNA to produce the proteins required to form an ultra-efficient membrane.The nucleoid region, which is an atypically shaped area that houses the cell's DNA and is not encased in a nuclear envelope, is present in prokaryotic cells.A prokaryote's cytosol is where all of the organism's responses take place.Hence, the correct answer is prokaryotic cell.
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Lactose is found in milk products. It is converted by the body into a usable form in a series of chemical reactions. The diagram shows the series of reactions that convert lactose into a usable form.
Responses
Each enzyme is specific to its substrate.
Each enzyme is specific to its substrate.
The equilibrium of the reaction is maintained.
The equilibrium of the reaction is maintained.
The reaction rate decreases.
The reaction rate decreases.
The enzyme will be broken down for energy.
The enzyme will be broken down for energy.
Lactose is found in milk products. It is converted by the body into a usable form in a series of chemical reactions. The diagram shows the series of reactions that convert lactose into a usable form. The appropriate response will be Each enzyme is specific to its substrate.
What is an enzyme?Enzymes are described as proteins that act as biological catalysts by accelerating chemical reactions.
There are several factors that cause an enzyme to be denatured; one of them is an increase in temperature.
So, when enzyme II is denatured, its molecular structure changes, and it In conclusion, the galactose increases when enzyme II is denatured.
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How would the soil biota be affected by using traditional chemical pesticides and would this differ from using transgenic methods? Which method would be safer and why?
Traditional chemical pesticides can harm soil biota by killing beneficial microorganisms, while transgenic methods may have less impact. Transgenic methods are considered safer because they can target specific pests and reduce the use of broad-spectrum pesticides, which can have negative effects on soil health and biodiversity.
The use of traditional chemical pesticides can have negative impacts on soil biota by reducing the abundance and diversity of soil microorganisms. Pesticides can also persist in the soil, potentially leading to long-term effects on soil health and fertility.
In contrast, transgenic methods, such as genetically engineered crops that produce their own insecticide, may have a less direct impact on soil biota as they do not involve the application of chemical pesticides.
However, transgenic methods could still have indirect effects on soil biota through changes in crop management practices, such as increased tillage or reduced crop diversity.
In general, the use of traditional chemical pesticides is considered less safe than transgenic methods because of the potential for negative impacts on non-target organisms, including soil biota.
Transgenic methods can also have benefits such as reducing the need for chemical pesticides and increasing crop yields, which can help to address food security issues.
However, the safety of transgenic methods is still a topic of debate, and there are concerns about the potential for unintended consequences and long-term environmental impacts.
Ultimately, the safety of either method depends on the specific pesticide or transgenic crop being used, as well as the environmental and agricultural context in which they are employed.
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