the vitamin that poses the greatest risk for toxicity is:

Answers

Answer 1
Retinol is the form of vitamin A that causes the greatest concern for toxicity.

Hope this helps!

Related Questions

What is the Greek name for each of the spheres?

Answers

Answer:

stone (litho) or ground (geo)

air or vapor (atmo)

water (hydro)

life (bio).

Explanation:


need help on #3: number the following structures in the oder in which blood passes through them - start with the valve through which blood exits from the right atrium.

Answers

The order is tricuspid valve, right ventricle, p. valve, p. artery, lungs, left atrium, mitral valve, left ventricle, aortic valve, aorta, tissues and vena cava.

What is blood passage?

The blood passage refers to the passage of blood cells in the bloodstream of the circulatory system.

The tricuspid valve acts to avoid the regurgitation of the blood cells in the circulatory system.

The pulmonary valve is a channel located between the right ventricle and the pulmonary artery.

In conclusion, the order is tricuspid valve, right ventricle, p. valve, p. artery, lungs, left atrium, mitral valve, left ventricle, aortic valve, aorta, tissues and vena cava.

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What are silver carp strengths and weaknesses?

Answers

Silver carp are fish so they are weak to air and strong in water :)

PLEASE HELP!!!!!

Which of the following is NOT likely to be an outcome of building more wind and solar farms?
A: an increase in air temperature
B: an increase in rain
C: a change in wind path
D: a decrease in farming output

Answers

Answer: B: an increase in rain

Explanation:

Answer:

an increase in rain

Explanation:

in which group are the alkaline earth metals found?

Answers

Group 2A of the periodic tables are earths alkaline metals


There are 18 daisies in a 0.25 m² area. How many daisies might there be in a 1.0 m² area?

Answers

Answer:

72

Explanation:

0.25 X4 =1.0 so

18x4=72

Please answer !! 16 points

Answers

I believe it’s water

● History of Ribosomes./ pls describe and write so facts

Answers

Answer:

Ribosomes are small dense and granular ribonucleoprotein (i.e., RNA and protein) particles found attached on the outer surfaces of endoplasmic reticulum and nucleus as well as freely scattered in cytoplasm, mitochondrial matrix and chloroplast.

Explanation:

History of Ribosomes:

Ribosomes were first isolated from E. coli by Tissieres and J. D. Watson (1958), who found that ribosomal RNA alone accounts for 22% of the total weight in rapidly growing cells (90% of total RNA). Palade (1953) was the first to observe the ribosomes as dense particles or granules in electron microscope. Upon isolation they were shown to contain approximately equal amounts of RNA and protein.

Size of Ribosomes:

There are mainly two sizes of ribosomes — (i) One is smaller prokaryotic found in bacteria and blue—green algae, having a sedimentation coefficient 70S equivalent to a molecular weight of 2.7 × 106 daltons. (Dalton is the unit of molecular weight. One Dalton is equal to the weight of one hydrogen atom), (ii) Other is of eukaryotic cells of plants and animals of 80S coefficient with a molecular weight of about 4 × 106 daltons.

In eukaryotes, gene expression is regulated mostly by _____.

Answers

Answer:

Gene expression in eukaryotic cells is regulated by repressors as well as by transcriptional activators. Like their prokaryotic counterparts, eukaryotic repressors bind to specific DNA sequences and inhibit transcription.

Explanation:

In eukaryotes, gene expression is regulated mostly by transcription factors.

What are transcription factors?

Transcription factors are proteins that bind to DNA in the promoter region of a gene, and they play a critical role in controlling when and to what extent a gene is expressed.

They can either activate or repress gene expression by promoting or inhibiting the recruitment of RNA polymerase. Transcription factors are themselves regulated by a variety of signals, including hormones, growth factors, and other external cues, as well as by feedback loops and other regulatory mechanisms within the cell.

Ultimately, this complex interplay of factors allows eukaryotic cells to precisely control which genes are expressed, when they are expressed, and to what degree, enabling them to respond to changing internal and external environments.

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What do you think is the more ethical and feasible approach to wildlife preservation: change human behavior to limit human impact, or create sanctuaries to preserve some of the threatened animals’ population? Why?

Answers

Answer:

I think we need to do both, but I'll let you decide which you think sounds better for you personally (personally I think sanctuaries are often more effective).

Explanation:

Behavior changes It is not really ethical to continue to have a negative impact when changing our behavior can help, however, this may not be ideal as explained below

Sanctuaries It is often more feasible to create preservation sanctuaries because 1) it is hard to get everyone to change enough habits in order to create large-scale change and 2) some species require more immediate action to save, whereas changing human behavior may not be enough and/or at the right pace to preserve and expand the populations of endangered populations

Depending on the main threat to a specific population, the approach will obviously be different.

I need help
please ASAP ​

Answers

Integumentary System - Hair loss.
Digestive System - Vomiting.
Circulatory System - Anaemia.
Immune System - Increased susceptibility to infections.

I apologise if this is too late.

How would life on Earth be affected if water was less dense than ice?

Answers

Answer:

freeze and sink over and over until the entire lake was frozen.

Explanation:

This would eliminate many aquatic organisms and produce a system with far fewer life forms in lakes which freeze periodically.

máu thuộc loại mô gì

Answers

máu là Mô liên kết!!!!!!!!!!!!!!!!!!!!!!!

How many chromosomes does a normal passeriformes have?

Answers

Answer:

In general, bird karyotypes have a high diploid number (2n) of typically around 80 chromosomes that are divided into macro- and microchromosomes

what balances the skills and equipment of the hunter with the abilities of the animal to escape

Answers

Fair chase rules the hunter has no advantage over a wild game.

Fair Chase strikes a balance between the hunter's ability and tools and the animal's capacity for escape. Fair Chase is mainly determined by people and their level of hunting prowess.

What is fair chase?

Fair chase is defined as a term used by hunters to refer to a moral method of taking down large game animals. A fair chase is the ethical, sportsmanlike, and legal chase and taking of any free-ranging wild game animal in a way that does not offer the hunter an improper or unfair advantage over the game animals, according to the Boone and Crockett Club.

A wildlife management organization establishes hunting laws in the majority of states. Regular meetings of these organizations will allow members of the public to express their opinions and offer suggestions. When the entire hunting experience is their major focus, seasoned hunters reach the sportsman stage. Although they may still have a target animal or a number of kills in mind, hunters at this stage don't plan their hunts around these objectives.

Thus, fair chase strikes a balance between the hunter's ability and tools and the animal's capacity for escape. Fair Chase is mainly determined by people and their level of hunting prowess.

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which term refers to distention of the renal calyces and pelvis?

Answers

Answer:

Hydronephrosis refers to distention of the renal calyces and pelvis of one or both kidneys by urine. Hydronephrosis is not a disease but a physical result of urinary blockage that may occur at the level of the kidney, ureters, bladder, or urethra.

Explanation:

biology definitions i wrote down

Plant cells don't have mitochondria in their cytoplasm because of the presence of chloroplasts that convert light energy into chemical energy.

True
False

Answers

Answer:

true brainliest pls

Explanation:

Morwenna has always been overweight and Ammon has always been thin. If they both look at pictures of food, a brain scan is likely to show that Morwenna has ________ than Ammon. a. more activity in the limbic system b. more activity in the ventromedial hypothalamus c. less activity in the limbic system d. less activity in the ventromedial hypothalamus

Answers

Answer:

???????

Explanation: i can't give you the exact answer but um i think 'cause she's more fatter than Ammon

Pls help!

Explain how Community 1 and Community 2 compare with regards to species richness
(number of species)?

Explain how Community 1 and Community 2 compare with regards to species evenness
(proportion of each species)?

Answers

I need to see whole picture to help

Suggest TWO different ways by which the deficiency disease caused by a lack
of iron in the diet could be treated.

Answers

Answer: hey i have that problem (anemia) causes passing out and excessive bleeding in the nose.

this could be treated by 1. iron supplements taken by mouth.

2. Foods high in iron and foods that help your body absorb iron (like foods with Vitamin C).

Explanation:

What is the function of the genetic material in the cell​

Answers

Answer:

DNA serves two important cellular functions: It is the genetic material passed from parent to offspring and it serves as the information to direct and regulate the construction of the proteins necessary for the cell to perform all of its functions.

Explanation:




correct choice???



bio


Answers

Answer:

solvent

Explanation:

the solvent is the substance in which the solute dissolves

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The Correct choice is :

Solvent

What are all living things made of?

Answers

Answer:

All living organisms are made up of one or more cells, which are considered the fundamental units of life. Even unicellular organisms are complex! Inside each cell, atoms make up molecules, which make up cell organelles and structures. In multicellular organisms, similar cells form tissues.

Explanation:

Answer:

Cells!

Explanation:

The cell theory states that...

-Cells are the building blocks of life

-All living organisms are composed of one or more cells.

-All cells come from pre-existing cells

HELPPPP!!!

Describe an example of how island biogeography principles were used to explain biodiversity changes in areas that were not specifically islands.

Answers

Answer:

How Biogeography Affects Biodiversity

Alfred Russel Wallace, Father of Biogeography

Figure 1: Alfred Russel Wallace, Father of Biogeography

Some places contain more species than others. For example, Antarctica has fewer species than a temperate deciduous forest, which in turn has fewer species a tropical rainforest. For over 150 years, researchers have sought to make sense of the gross and fine scale spatial patterns in biodiversity, and to elucidate both the proximate and ultimate causes for these patterns.

This article describes some of the major geographic patterns in species richness, and the processes and theories that are thought to account for these patterns. Much of this knowledge has emerged from the tremendous body of work from one scientist, Alfred Russel Wallace (Figure 1), widely regarded as the “Father of Biogeography.” Aside from co-originating the process of Natural Selection with Charles Darwin, Wallace spent extended periods studying the distribution and diversity of plants and animals in Amazonia and Southeast Asia in the mid 1800s. Many of the patterns and processes featured in this article were initially described by Wallace, and careful study of his work indicates that his ideas presaged many of the discoveries made by his numerous successors.

Many of the spatial patterns in biodiversity are overt, others are subtle and yet additional patterns remain undetected. While the existence of these patterns may be obvious — and changes in the environment that are paired with these patterns may also be obvious — the mechanisms that cause the differences in biodiversity along environmental gradients are under still the subject of scientific debate. Because large-scale patterns are the emergent result of complex interactions at many spatial and temporal scales, no single answer is likely to ever emerge, but with continued research our understanding of the processes shaping these patterns increases.

Historical Processes Affecting Biogeography

Darwin's finches of the Galapagos Islands are a classic example of adaptive radiation.

Figure 2: Darwin's finches of the Galapagos Islands are a classic example of adaptive radiation.

All species occurring in at a given place and time either arrived from another place or originated in that location from ancestral species. This fact applies to extinct species that were ancestors of all extant species. Species richness in a given location is the result of three factors — the rate of speciation, the rate of extinction, and the dispersal of species from other locations. In principle, if biogeographers could understand how the current and past environment has shaped these three factors, we would then obtain a comprehensive understanding of what generates all biogeographic patterns of species richness. However, numerous environmental and organismal parameters can drive these historical factors, in both complex and interacting fashions.

which muscle group relates best with the term midline?

Answers

The oblique is the muscle group that best relates with the term midline.

The anterolateral abdominal wall contains a muscle group in which there are flat muscles whose fibers originate in the posterolateral part, pass forward and become an aponeurosis towards the midline:

The external oblique muscle is the thickest and most superficial of the three muscles on the lateral wall of the abdomen.

It follows an inferomedial direction and the muscle-tendon limit descends in such a way that, towards the midline and also below the height of the anterior superior iliac spine, it is completely transformed into an aponeurosis.

The aponeurosis of the external oblique joins that of the internal oblique and passes in front of the rectus abdominis; its fibers intersect in the midline with those on the opposite side and contribute to the linea alba.

Therefore, we can conclude that the oblique is the muscle group that best relates with the term midline.

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In living organisms the cell
cycle is closely regulated.
What do you think will
happen if cell division is not
controlled?

Answers

Answer:

Explanation:

Disruption of normal regulation of the cell cycle can lead to diseases such as cancer. When the cell cycle proceeds without control, cells can divide without order and accumulate genetic errors that can lead to a cancerous tumor

The cell life cycle is controlled meaning that:

The reproduction of the cell is controlled.

The cell has a "programated death" meaning that at some point, all normal cells die.

If there is a problem with these (uncontrolled reproduction or cells that just not die) a tumor will appear.

Where the tumor is just a mass of these cells that reproduce uncontrolled and that don't die naturally.

So the thing that happens if cell division is not controlled, is that a tumor will appear.

How to make bacteria as a treatment for sewage waste

Answers

Answer: Bacteria break down organic material in wastewater and form the floc that settles and separates solids from liquids. Controlling F/M ratio–a vital component to creating a favorable environment for wastewater bacteria–can be accomplished through the use of bioremediation products. Bacteria account for 95% of the microorganisms in wastewater. They are single-celled microorganisms that are classified based on their response to oxygen.

Aerobic bacteria use oxygen, which is added mechanically, to break down wastewater contaminants, converting it into energy. Bacteria use this energy to grow and reproduce. Anaerobic bacteria obtain oxygen from their food source. As anaerobic bacteria break down sludge, they produce methane gas. This methane gas can be used as an alternative energy source, called biogas, to fuel the wastewater treatment process. Anaerobic bacteria can also be used to lower the amount of phosphorus in the effluent. Although they prefer oxygen, facultative bacteria can switch between aerobic and anaerobic forms in response to their environment.

can you guys please help me. this is my last one

you guys can just do 3 sentences

please don't put any links or I will report you​

Answers

Answer:

why don't you want people to send you links?

plz answer correctly. thank you.

Answers

Answer:

Mitosis and cytokinesis

Explanation:

Answer:

see below

Explanation:

1) A- Interphase and mitosis

2) Interphase

The cell membrane is a unique structure that has many functions.
How is the cell membrane involved in riding the body of bacteria,
allowing water to enter the cell, and export material out of the cell?

Answers

Answer:

The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.

Explanation:

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NO LINKSSSS PLEASE!!!The solubility of oxygen gas in water is increased by which of the procedures shown below?Select one:a. Decreasing the temperature of the solution.b. Decreasing the pressure on the solution.c. Increasing the temperature of the solution.d. Stirring the solution. Which immunization is available to prevent communicable disease and illness?O diabetesO measlesbronchitisstrep throat please help I will mark brainiest Pleaseeeeee i need this Where is the Catrina parade? How does Thoreaus style contribute to the meaning of the text?Select the two correct answers.A. Thoreau encourages people to renew their dedication to their faith and to pious living by stating, "I got up early and bathed in the pond; that was a religious exercise, and one of the best things which I did."B. Thoreau asserts that morning is when people are most aware and open to growth with lines like "Then there is least somnolence in us; and for an hour, at least, some part of us awakes which slumbers all the rest of the day and night."C. The allusion "the bathing tub of King Tching-thang to this effect: 'Renew thyself completely each day; do it again, and again, and forever again'" emphasizes the mundane routine that comes with everyday life.D. The allusion "I have been as sincere a worshipper of Aurora as the Greeks" emphasizes that every morning is an opportunity for spiritual renewal. excerpt from the Where I Lived and What I Lived For section of Walden by Henry David ThoreauEvery morning was a cheerful invitation to make my life of equal simplicity, and I may say innocence, with Nature herself. I have been as sincere a worshipper of Aurora as the Greeks. I got up early and bathed in the pond; that was a religious exercise, and one of the best things which I did. They say that characters were engraven on the bathing tub of King Tching-thang to this effect: Renew thyself completely each day; do it again, and again, and forever again. I can understand that. Morning brings back the heroic ages. I was as much affected by the faint burn of a mosquito making its invisible and unimaginable tour through my apartment at earliest dawn, when I was sitting with door and windows open, as I could be by any trumpet that ever sang of fame. It was Homers requiem; itself an Iliad and Odyssey in the air, singing its own wrath and wanderings. There was something cosmical about it; a standing advertisement, till forbidden, of the everlasting vigor and fertility of the world. The morning, which is the most memorable season of the day, is the awakening hour. Then there is least somnolence in us; and for an hour, at least, some part of us awakes which slumbers all the rest of the day and night. ano mahahalagang naimbag ng kabihasnang roman sa daigdig Find the cube of the number 50 The vapor pressure of a liquid at a given temperature is measured when the rate of evaporation of a liquid becomes Bramble Corp. is planning to sell 200 buckets and produce 880 buckets during March. Each bucket requires 100 grams of plastic and one-half hour of direct labor. Plastic costs $ 10 per 100 grams and employees of the company are paid $ 18 per hour. Manufacturing overhead is applied at a rate of 110% of direct labor costs. Bramble has 1000 kilos of plastic in beginning inventory and wants to have 1000 kilos in ending inventory. How much is the total amount of budgeted direct labor for March Where does the energy from and where does it end up? Help me please this is due please help if you were given $ 1000, what would you do with it? how would you spend it? please write at least 3 full sentences for credit. please help!! will mark brainliest Why are occupants of the international space station weightless? Determine if the equations are intersecting, parallel, or coincident.-2 +y = 8- 3x + 4y = 28intersectingcoincidentparallel Help me with the question in the image its geometry which skin cancer arises from the youngest epidermal cells In 2006, President George W. Bush ordered the formation of military tribunals toprosecute suspected terrorists held at Guantanamo Bay. This example might beseen as an example of which approach to the presidency? which sentence contains the strongest example of imagery? it was a cold and windy night. the sky was dark and empty. stars shimmered in the sky like a sea of tiny candles. i felt very alone as i looked out at the night and shivered.