What substance(s) cause(s) the ovaries and testes to greatly increase their production of estradiol and testosterone?

Answers

Answer 1
Gonadotropin releasing hormones causes the ovaries and testes to greatly increase their production of estradiol and testosterone.
Gonadotropin releasing hormone is a hormone is released from nerve cells in the brain or produced in hypothalamus and transported to the pituitary gland through the blood stream. These hormones are very important in fertility.



Related Questions


When animals consume a toxic material and it builds up in their bodies more quickly than it can be metabolized or excreted, it may harm them, as well as humans who consume them. What is this process called?

Biomagnification
Biological half life
Environmental persistence
Environmental stability

Answers

This is biomagnification (buildup of toxins in one organism).

Final answer:

Biomagnification is the term for toxic materials accumulating in animals and increasing in concentration up the food chain, impacting apex predators and potentially causing significant ecological harm.

Explanation:

The process by which toxic materials build up in the bodies of animals and become more concentrated at each level of the food chain is called biomagnification. This happens with toxins that are persistent in the environment and are poorly degradable and lipid-soluble, such that they accumulate in the fatty tissues of organisms. As an example, consider the case of DDT, a pesticide which exemplified the consequences of biomagnification, leading to detrimental effects on apex predators like the bald eagle, by causing their eggshells to become fragile and threatening their populations.

The sugar glider in australia and the flying squirrel in north america are both small mammals with large expanses of loose skin between their fore- and hind-limbs allowing them to glide from tree to tree within their respective forest habitats. these two species are distantly related but are very similar in their overall appearance. the evolutionary explanation for their similarity is that

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Each of these animals have adapted in very similar ways to similar habitats. This us similar to a homologous structure, but that is a term used for the presence of similar bones.

What term refers to organisms magnified with a microscope

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The organisms magnified with a microscope is called as microorganism.

What are Microbes?

It is a tiny unicellular microscopic organisms such as Bacteria, Fungi, Protists, Viruses, Archaea.

Bacteria are single-celled organisms having no nucleus, no membrane bound organelle and  cell wall made of peptidoglycan.

Archaea are  also single-celled organisms with no nucleus. Its outer wall have unique lipid  which provide them protection in harsh environment.

Fungi are either single-celled or multicellular organisms having nuclei and membrane bound organelles like plant and animals. The cell walls made up of chitin.

Protists are either single-celled or multi-cellular with nuclei. Some of the parasitic protists can cause diseases like malaria, dysentery, and giardia

Viruses are  made of nucleic acids, proteins, and lipids. They are host dependent and can produce when it is in the host. For example, HIV which infects a specific immune cells.

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the diagram below shows the movement of matter in a portion of water cycle. what does P most likely represent?
A) Rivers
B)springs
C) transpiration
D) precipitation

Answers

I'd say you go with B :)

The correct answer is B) springs.

A place on the Earth’s surface where water appears at on its own is called a spring.  After rain or from snow water seeps into the ground. The water which seeps into the ground is collected in fractures and fissures in the bedrock. Water in the bedrock collected into the aquifers. When a fissure in the bedrock breaks the surface, the natural high water pressure under ground forces water above the earth surface and forms spring.

Occurs when layers of materials, such as extra sheets or blankets, are placed over the surgical mattress or padding, diminishing the pressure-reducing properties of the surfaces

Answers

Shear occurs when layers of material, such as extra sheets or blankets, are placed over the mattress or padding. Hence the correct option is b.

Shear is a phenomenon that occurs when layers of material, like additional sheets or blankets, are placed over a mattress or padding. This happens when the upper layers of the material move in a parallel direction to the surface below. In the context of healthcare, shear forces can be problematic for patients, especially those with limited mobility or those bedridden.

When a person is moved or repositioned in bed, the skin can experience shear forces, potentially leading to skin injuries, particularly in areas where bones are close to the skin's surface. It's crucial to address shear forces in healthcare settings to minimize the risk of complications, and healthcare professionals often employ various strategies such as proper positioning and the use of specialized support surfaces to mitigate the impact of shear on the skin. Hence the correct option is b.

Complete question:

_____ occurs when layers of material, such as extra sheets or blankets, are placed over the OR mattress or padding?

A. Immersion

B. Shear

C. Friction

D. Negativity

Hanging from the posterior border of the soft palate is a cone-shaped muscular structure called the ____.

Answers

Hanging from the posterior border of the soft palate is a cone-shaped muscular structure called the Uvula.
 The term uvulitis is used for swollen uvula. Uvula is sometimes mistaken for a tonsils but actually tonsils are different from this. uvula is present in our mouth. Uvula is important for human voice, throat lubrication and choking prevention.

All cells in your body do not exhibit all of the traits you have, yet they all have the same DNA. Explain this.

Answers

Through a process called cellular differentiation, during development cells have specific genes which are turned on and off depending on their job function. At any time, cells will only have small amounts of DNA being used, the rest of the DNA is turned off. For example, muscle cells will have genes turned on to produce myosin, muscle fibers. Skin cells will have genes turned on to produce melanin and reproduce every twenty minutes.

A student refuses to wear safety goggles in lab. what will the instructor do?

Answers

Final answer:

When a student refuses to wear safety goggles, the instructor should remind them of the safety protocols and the importance of wearing protective gear. If refusal persists, the student may be asked to leave the lab to maintain a safe environment.

Explanation:

If a student refuses to wear safety goggles in lab, the instructor has the responsibility to enforce lab safety protocols. Safety guidelines, including the use of personal protective equipment, are essential for reducing the risk of injury in a laboratory setting. It is important to protect students from potential harm by ensuring that they adhere to safety precautions. In this case, the instructor would most likely remind the student of the importance of wearing goggles and the potential consequences of not doing so. If the student continues to refuse, the instructor could require them to leave the lab for the day to maintain a safe environment for everyone. In some educational institutions, there may also be disciplinary actions for failing to follow safety instructions.

Moreover, before participating in lab courses, students are often required to sign a department form stating the assumption of risk and a release from claims. This helps to ensure that they have been informed of and understand the necessary safety measures to be followed.

The three systems that work together most closely to regulate blood pressure, osmolarity and ph are the _________ systems.
a.cardiovascular,integumentaryandurinary
b.respiratory, lymphatic and cardiovascular
c.urinary,respiratoryandcardiovascular
d.cardiovascular, digestive and urinary
e.urinary,lymphaticanddigestive

Answers

The answer is c.

Urinary, respiratory and cardiovascular.

A student is performing a gram stain of a mixed culture of both
e. coli and s. aureus and he forgets to decolorize with ethanol. what should his slide look like?

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Both types of bacteria appear to be dark purple (stained with gentian violet), both will have a gram-positive appearance.

In the gram stain, two dyes are used: gentian violet and Fuschia pink, the two stains are separated by alcohol bleaching.

Alcohol bleaching (+ acetone) is the most important step in coloring. It must be fast in order to eliminate the rich lipid wall of the gram negative bacteria that has retained the staining, to then be colored by the pink Fuschia.

Beware, the abuse of alcohol will result in all Gram negative bacteria.

On a laboratory exam a student is asked to determine if the cell under a microscope are plant cell or animal cells. Where might the student look for

Answers

look for a cell wall or a large vacuole or a lysome

The capability of a nerve terminal to rapidly and dramatically produce very large changes in calcium levels is most dependent on the

Answers

the presence of calcium selective ion channels

is the rickets disease a pathogen, if so how

Answers

Rickets disease is a disorder in the bones (skeletal disorder) which may be caused by the lack of vitamin D, phosphate, or calcium. This can be evidenced through the weakness of the muscles, skeletal deformities, bone pain, etc. 

Since, this is caused by lack of vitamins, this is not a caused by the pathogens. 

Justin was involved in an automobile accident and sustained a serious injury to his head. when asked about the accident, justin could not remember what happened or how the accident occurred. justin seems to be suffering from:

Answers

The answer to this question is the "Retrograde Amnesia". When Justine was involved in an automobile accident and sustained a serious and critical injury to his sensitive part of the body which is the forehead. When he is being asked about the accident, Justin could not remember what happened on how the accident occurred. So Justin seems to be suffering from  RETROGRADE AMNESIA.

Think about the structure and function of your backbone. why do you think there are discs of cartilage between the bones in the vertebral column?

Answers

The capacity of the backbone is to secure the spinal line, yet it additionally needs to take into consideration developments, for example, twisting around or turning from side to side. The a wide range of fragments of bone consider this bowing or bending significantly more than a solitary bone stretching out from the neck to the coccyx could. The circles of ligament serve two or three capacities. One, they help to interface each of the individual vertebral bones and avoid separation. Two, they keep the crushing of bone on bone that would happen if the vertebral bones were in coordinate contact.

Describe the impact of a waterborne pollutant on an aquatic community. write a 100-word report on how that pollutant affected aquatic life, what the effect was, and whether the effect is linked to biomagnification.

Answers

A waterborne pollutant can have different effects on aquatic life depending on the nature of the pollutant. A pollutant at lower levels can have minimal or no effect on aquatic life. However, when the concentrations of the pollutant are high, the population of aquatic organisms can be greatly reduced. There are also times when pollutants at lower concentrations cause significant damage. An organism can consume another organism that has absorbed small amounts of the pollutant. As the consumer takes in more of the contaminated organism, the pollutant is magnified in the body of the consumer resulting in lethal concentrations. This is called biomagnification.
Final answer:

Water pollution can have a significant impact on aquatic communities, affecting aquatic life and the overall ecosystem. Pollutants such as heavy metals can biomagnify in the food chain, leading to higher concentrations in predatory fish species. This can have harmful effects on the fish themselves, as well as on the organisms that consume them.

Explanation:

Water pollution is the contamination of water by an excess amount of a substance that can cause harm to human beings and/or the ecosystem. Pollutants can enter water supplies from point sources, which are readily identifiable and relatively small locations, or nonpoint sources, which are large and more diffuse areas. Waterborne pollutants can have a significant impact on aquatic communities, affecting aquatic life and the overall ecosystem. For example, pollutants such as heavy metals like mercury and cadmium can biomagnify in the food chain, leading to higher concentrations of these toxins in predatory fish species. This can have harmful effects on not only the fish themselves, but also on the birds or humans that consume them. Biomagnification is a process where the concentration of a toxin increases as it moves up the food chain.

What reagent may be sprayed at a crime scene to identify blood

Answers

I  believe it's luminol 
the answer is luminol

The type of fibrous joints that are immobile and found only between certain bones of the skull are called

Answers

Somebody once told me the world is gonna roll me
I ain't the sharpest tool in the shed
She was looking kind of dumb with her finger and her thumb
In the shape of an "L" on her forehead

Well the years start coming and they don't stop coming
Fed to the rules and I hit the ground running
Didn't make sense not to live for fun
Your brain gets smart but your head gets dumb
So much to do, so much to see
So what's wrong with taking the back streets?
You'll never know if you don't go
You'll never shine if you don't glow

Hey now, you're an all-star, get your game on, go play
Hey now, you're a rock star, get the show on, get paid
And all that glitters is gold
Only shooting stars break the mold

It's a cool place and they say it gets colder
You're bundled up now, wait till you get older
But the meteor men beg to differ
Judging by the hole in the satellite picture
The ice we skate is getting pretty thin
The water's getting warm so you might as well swim
My world's on fire, how about yours?
That's the way I like it and I never get bored

Hey now, you're an all-star, get your game on, go play
Hey now, you're a rock star, get the show on, get paid
All that glitters is gold
Only shooting stars break the mold

Hey now, you're an all-star, get your game on, go play
Hey now, you're a rock star, get the show, on get paid
And all that glitters is gold
Only shooting stars

Somebody once asked could I spare some change for gas?
I need to get myself away from this place
I said yep what a concept
I could use a little fuel myself
And we could all use a little change

Well, the years start coming and they don't stop coming
Fed to the rules and I hit the ground running
Didn't make sense not to live for fun
Your brain gets smart but your head gets dumb
So much to do, so much to see
So what's wrong with taking the back streets?
You'll never know if you don't go (go!)
You'll never shine if you don't glow

Hey now, you're an all-star, get your game on, go play
Hey now, you're a rock star, get the show on, get paid
And all that glitters is gold
Only shooting stars break the mold

And all that glitters is gold
Only shooting stars break the mold

Final answer:

Sutures are the type of fibrous joints that are immobile and found only between certain bones of the skull. They provide a tight union between skull bones, effectively protecting the brain.

Explanation:

The type of fibrous joints that are immobile and found only between certain bones of the skull are called sutures. Sutures are fibrous joints with short fibres of connective tissue that hold the skull bones tightly in place. This type of joint is an example of synarthrosis, an immobile or essentially immobile joint. Unlike other types of fibrous joints, such as syndesmoses (found between the shaft regions of the long bones in the forearm and leg) and gomphoses (found between the roots of a tooth and the bony socket in the jaw), sutures are immovable and provide a tight union between skull bones, protecting the brain.

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A(n) _____ specimen is the most concentrated urine.

Answers

A salt-concentrated specimen is the most concentrated urine. Urine is a waste that is already filtered by the kidneys. So, if the urine concentration or salts are high, that means that your kidney is not functioning properly. The urine test is the most common laboratory test especially for drug test.

Which cam modality focuses on the manipulation of biofields?

Answers

The field of Complementary and Alternative Medicine [CAM] that focuses on the manipulation of the biofields is the ENERGY MEDICINE. Energy medicine is a branch of CAM that believe that healing energy can be channel into a patient in order to create positive results. The technique is not based on scientific results.

The central concern or issue in the natural science or positivist model adopted by mainstream criminology is _____.

Answers

The answer to this question is Etiology or the cause or causes of criminal behavior. Etiology simply means the study of origin. Mainstream criminology also known as standard criminology. Criminology is the study of the criminal justice system, study of the criminals, and methods on how to prevent crimes. 

How is the structure of a virus different from the structure of a prokaryotic cell?

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Viruses are collectively classified as "non-living"; unlike prokaryotic cells. This is because:
+ Viruses do not have a cellular organization.
  -This means that they cannot perform metabolic activities without a host cell, unlike prokaryotes.
+ Viruses are approximately 50 times smaller than prokaryotes.
+ When taking into consideration genetic material, viruses can either have DNA or RNA, whereas prokaryotes have DNA as their genetic composition.
+ Viruses can proliferate and have the capability of affecting other microorganisms.

What adds more evidence to the idea that the cell is the basic unit of life?

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Without cell's people, animals, and plants wouldn't be able to grow or reproduce. The cell cycle makes a duplicate of the same cell making a living object grow or reproduce. How ever plants do not reproduce that is another process.
Hope this helps!!

The __________is that part of the total capacity of our body’s organs that we do not normally need to use.

Answers

The organ reserve is that part of the total capacity of our body’s organs that we do not normally need to use.

Organ reserve capacity will be used when your body receives stress and will cause a disease if it not enough. When people age, these reverse will be reduced. That's why old people are easier to catch a disease. A child also has lower reserve capacity but it will grow as they age.

Which is an example of how the body maintains homeostasis? increasing thirst when cells are low on water decreasing thirst when cells are low on water shivering when it is hot sweating when it is cold

Answers

The right option is; increasing thirst when cells are low on water

Homeostasis is ability of a biological system or the body to adjust its internal environment in order to maintain a condition of stability regardless of the external changing conditions. Homeostasis occurs in humans when thirst is increased because cells are low on water, when sweating to cool off when it is hot, or when shivering to produce heat when it is cold.

The statement that correctly describes how the body maintains homeostasis is:

Increasing thirst when cells are low on water.

What is homeostasis?

Homeostasis is the ability of the organism to present a characteristic and constant physical-chemical situation within certain limits.

Characteristics of homeostasis

Thirst behavior, described as an intense motivation to seek, obtain, and consume water, is one of the most important homeostatic mechanisms for maintaining water balance.

Water balance indicates homeostasis or relative constancy of body fluid levels, a precise situation for survival.

Therefore, we can conclude that homeostasis is the set of self-regulatory mechanisms such as increasing thirst that lead to the maintenance of constancy in the properties and composition of the internal environment.

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Minerals and mining museum is long and narrow in order to

Answers

The correct explanation to this is:

The minerals and mining museums is long and narrow in order to “take advantage of orientation and cross ventilation”.

When the museum is narrow, this makes the skin which is separate from the structural grid seems to be alive in its sensitivity to the context. Additionally, the rammed-earth walls fitted with wind traps keep the interior space about 10 degrees Celsius cooler than the air outside.

what is an example of a job a biologist would have ?

Answers

maybe a Microbiologist or research scientist

______ are the mammalian group that lay eggs.

Answers

Monotremes are the mammalian group that lay eggs. These mammals are considered to be primitive since they are like the birds and reptiles who lay eggs instead of live birth. There are only five known species of this group of mammals namely the duck billed platypus and the four species of spiny anteaters. All of these mammals can only be found in New Guinea and Australia. Although they lay eggs, the female monotreme would still nurse their babies with milk the same with any other mammals.  Monotremes are considered to be warm-blooded having metabolic rate that is high and have body hair.

just a few hours after the birth of a baby, the mammary glands start producing milk. which hormone stimulates this event

Answers

The Hormone that stimulates this event is Prolactin

Hope this helps

Answer:

The correct answer is the prolactin hormone.

Explanation:

Prolactin (PRL) or luteotropic hormone is a hormone,  known for its different roles in enabling mammals, especially females. It is secreted in response to nursing, ovulation or mating, from the pituitary gland. Prolactin is manufactured by the pituitary gland in the brain.

Prolactin is majorly used to help women producing milk after a few hours of childbirth. The stimulation of the nipples and mammary gland leads to the release of prolactin.

Thus, the correct answer is the prolactin hormone.

food chains and webs not only describe the order organisms are eaten, but they also describe the ----. 1. flow of energy in an ecosystem, 2. importance of the ecosystem, 3. health of the ecosystem, 4. animals that are all related

Answers

Food chains and webs also describe the 1. flow of energy in an ecosystem.

The producers (all the way at the bottom or start of the chain) always have the most energy. As you make your way up, that energy is lost.
1) the flow of energy in an ecosystem
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