Phospholipid tails are hydrophilic and are attracted to water true or false

Answers

Answer 1

Answer:

False.

Explanation:

Phospholipid tails are hydrophobic, which means that they are repelled by water.

Thus, each phospholipid contains a hydrophobic portion (tails) - represented by fatty acids - and a hydrophilic portion (head) - corresponding to the phosphate group and its associated molecules. A notable fact is that, when placed in water, the phospholipid molecules can assume the shape of a sphere, known as micelle: the polar, hydrophilic portions are distributed in the periphery, while the hydrophobic tails, the tails, are in the inside the micelles away from the water.

Answer 2

Phospholipids are amphipatic molecules composing cell membranes. Their heads are hydrophilic, while their tails are hydrophobic. The statement phospholipid tails are hydrophilic and are attracted to water is false.

What are phospholipids?

Phospholipids are amphipathic molecules arranged in cell membranes. They have

hydrophilic heads facing the exterior and the interior of the cellshydrophobic tails that arrange against each other in the interlayer space.

In the membrane, phospholipids can easily change places with other lipids by lateral diffusion in the same layer.

They can also diffuse transversally to the other layer but not as easily as lateral diffusion.

There are also other lipidic movements as rotational diffusion that imply the rotation of the molecule.

The statement Phospholipid tails are hydrophilic and are attracted to water is false. Tails are hydrophobic and reject water.

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Related Questions

Are the metabolic rates of the three mammals comparable when based on square meters of body surface area

Answers

Final answer:

The metabolic rates of mammals are not directly comparable based on square meters of body surface area. Smaller mammals have higher metabolic rates per body weight because of their greater surface area-to-volume ratio.

Explanation:

The metabolic rates of mammals are not directly comparable when based on square meters of body surface area. Smaller mammals, such as mice, have higher metabolic rates per body weight compared to larger mammals, such as elephants. This is because smaller animals have a greater surface area-to-volume ratio, leading to more heat loss and therefore requiring more energy to maintain a constant body temperature.

1. a sequence of sugars, phosphates, and nitrogenous organic bases

2. a complex molecule containing the genetic code

3. a nucleic acid that participates in the synthesis of proteins

DNA
RNA
nucleic acid

Answers

1 is rna
2 is dna
3 is nuclei acid

Answer:

it is 1: nucleic acids

      2: DNA

       3:RNA

Explanation:

It was in my lesson too so i hope this helps

Please give me brainliest

What is the maximum magnification of a compound light microscope? 500x 1,000x 2,500x 5,000x

Answers

the answer is 2,500 (C)

Answer:

Option B, 1000 X

Explanation:

The simple formula to find the magnification strength of compound light microscope is to multiply the magnification power of eyepiece lens by the objective lens power.  

For example – if an eyepiece has power of10x and objective lens has power of  20x , then the highest magnification could be 10 X 20 i.e 200

However, the maximum magnification power of a lens is 1000x

Thus, option B is correct

Around age 40, adults ___________. see a decline in sexual functioning may need to wear bifocal lenses experience a sharpening of the senses experience a noticeable decline in hearing do not experience any physical changes

Answers

At age of 40 the lens of the eye begins to harden. The eye also has difficulty changing shape to focus during this age. This is the reason why
Around age 40, adults may need to wear bifocal lenses or  in other word, they may need to wear eyeglasses with two distinct optical powers.

Which part of her brain is responsible for the motor skills involved in playing a violin?

Answers

There are 4 parts of the brain we can attribute the responsibility of motor skills, like playing the violin. The first is the prefrontal cortex because it helps for the representation of the goal and its pursuit. Second, the motor cortex that handles the voluntary control of actions by someone. Third, the basal ganglia that is responsible when we do repetitive actions without thinking about them and last, but not least, the cerebullum, which is responsible for coordination in people.

Answer:

There are 4 parts of the brain we can attribute the responsibility of motor skills, like playing the violin. The first is the prefrontal cortex because it helps for the representation of the goal and its pursuit. Second, the motor cortex that handles the voluntary control of actions by someone. Third, the basal ganglia that is responsible when we do repetitive actions without thinking about them and last, but not least, the cerebullum, which is responsible for coordination in people.

Explanation:

Carter wants to lower his blood cholesterol level. based on this information, he should limit the intake of

Answers

He should lower his intake of red meats and fats, such as butters and beef. These foods contain high levels of LDL cholesterols which can cause atherosclerosis, among other diseases. Limiting the intake of meat and fats can help ameliorate this risk.

In the prokaryote
b. subtilis, the rna polymerase holoenzyme binds to a set of promoters when nutrients are readily available, and to a different set of promoters under conditions of nutrient deprivation. the ability of the holoenzyme to bind different promoters under these conditions involves a switch of one subunit. remembering the functions of the rna pol holoenzyme subunits discussed in class, which subunit is most likely to enable this change in promoter binding?

Answers

The sub unit which is most likely to enable this change in promoter binding is THE SIGMA FACTOR.
The sigma factor is a protein that is needed for the initiation of RNA synthesis. It is a transcription initiation factor that is found in bacteria, it allows the specific binding of the RNA polymerase to the gene promoters.

Summarize why the extinction rate is greater now than in the past biology

Answers

Habitat destruction, global warming and other problems influenced by humans are causing extinction rates to increase.

Which experiment listed below did not verify the fluid mosaic model of membranes?

Answers

It is the mutarotation tests. Mutarotation is the adjustment in the optical turn in light of the adjustment in the balance between two anomers when the relating stereocenters interconvert. Cyclic sugars demonstrate mutarotation as α and β anomeric frames interconvert. 
Mutarotation was found by French scientist Dubrunfaut in 1846 when he saw that the particular pivot of watery sugar arrangement changes with time

"what type of digestion involves the gastric mill? do rats accomplish that type of digestion in their stomachs?"

Answers

Since they don't have teeth, crawfish have a gastric factory that aides in absorption in the stomach. The factory is like teeth however are in the stomach. Rats don't have the kind of processing in their stomach since they have teeth.
The answer to this question would be: False

Gastric mill is an organ located inside the stomach that was used to grind the food so it would be smaller and easier to digest. This organ found in the animal that doesn't have teeth, so they just swallow their food whole.
Rats don't have gastric mill because it was not needed. Rat has teeth and can cut their food into many smaller part that easy to digest.

why can you fit more drops of water than alcohol on a penny

Answers

This configuration in the molecule produces some hydrogen bonding which is weaker than that in water molecules. As a result, the ethyl alcohol has less surface tension than water. About 20 to 30 drops of ethyl alcohol can be placed on a coindepending on drop size.

This is because the configuration in the molecules of ethyl alcohol results in a different kind of hydrogen bonding. This is weaker than that in the case of water molecules. This reduces the surface tension of the ethyl alcohol.

What is surface tension?

Surface tension is defined as the phenomenon that happens when the surface of a liquid is in contact with another phase. The other phase can be in the form of a liquid as well.

Liquids are able to acquire the least surface area that is possible by them. It can be said that the surface of the liquid behaves like an elastic sheet.

The surface does not only depend on the forces of attraction that are present between the particles within the given liquid, but they are also on the forces of attraction between solids, liquids, or gases that are in contact with the given liquid.

The energy that is responsible for the phenomenon of surface tension can be thought of as approximately equivalent to the work or energy that is required for moving the surface layer of molecules in a unit area.

Therefore, due to less surface tension of ethyl alcohol, more of it can be placed on the liquid.

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Germ theory that states that microorganisms, which are too small to be seen without the aid of a microscope, can invade the body and cause certain diseases. In the late 1800's this theory lead to a simple practice that saved thousands of lives in hospitals throughout the country from post-operative infections. This practice was

Answers

The practice that has been started because of the germ theory in which happened in the late 1800s was the introduction or proper hand washing in which was essential as the hands is the common route to infection because of the things that we touch and by that proper hand wash has been introduced and set as a practice in order to save thousands of lives.

D) covering wounds with sterilized dressings.

RNA and DNA are which type of organic compound

Answers

RNA and DNA are both types of nucleus acids. In their names long names, they both have the words “nucleic acid” in them. Nucleic acids are composed of carbon, hydrogen, oxygen, nitrogen, and phosphorus.

Nucleic acids are polymeres composed of several monomers known as nucleotides. RNA and DNA are Nucleic Acids. Option C

What are nucleic acids?

Nucleic acids are large molecules composed of monomers named nucleotides attached to each other by covalent bonds.

These polymers are DNA and RNA, and their nucleotides are composed of nitrogenated bases, sugar groups, and phosphate groups.

DNA and RNA vary in

nitrogenated bases (DNA is composed of adenine, thymine, guanine, and cytosine. RNA is composed of adenine, uracyl, guanine, and cytosine)sugar (DNA sugar is a deoxyribose. RNA sugar is a ribose)

RNA and DNA are Nucleic Acids.

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Complete question

RNA and DNA are which type of organic compound

a) carbohydrate

b) lipid

c) nucleic acid

d) protein

as a submarine gets closer to the bottom of the ocean. which of these is it likely to encounter? select the two correct answers.

A. a bioluminescent fish
B. a V-shaped trench
C. a coral reef
D. a continental shelf

Answers

The answer is A. V-shaped trench and B. A bioluminescent fish (apex)

Many deep-sea species use bioluminescence as a lure to draw in food, including angler fish and viper fish. The area of the ocean that is found inside ocean trenches with a V-shape is known as a zone, also known as the mesopelagic zone. Thus option A and B is correct.

What submarine do at bottom of the ocean?

Underwater robots known as submersibles are launched from a ship into the water, where they record and gather data from the ocean's water column and seafloor for scholarly examination.

For three to four months at a time, nuclear submarines can sustain operation underwater and traverse oceans with ease.

The depth of endurance below is unmatched by any conventional submarine, notwithstanding the fact that few can go the distance.

The ability to locate and strike surfacing submarines is therefore rather straightforward.

Therefore,  submarine encounter with a bioluminescent fish and V-shaped trench in deep ocean.

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The organs of the abdominal cavity are called

A. pleural.
B. dorsal.
C. viscera.
D. fascia.

Answers

Organs of the abdominal cavity are called  c. viscera 
The organs of the abdominal cavity are called Viscera (or C)

Describe the part played by the inner membrane of a mitochondrion in producing ATP

Answers

The role played by the inner mitochondrial membrane in producing ATP is as follows:  

• The inner mitochondrial membrane comprises electron transport proteins. At the inner mitochondrial membrane, a high-energy electron is passed via an electron transport chain.  

• This released energy pumps hydrogen out of the matrix space, resulting in the formation of a gradient.  

• This gradient pushes hydrogen ions back through the membrane, with the help of ATP synthase.  

• With this, the enzymatic activity of ATP synthase generates ATP from ADP.

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Can a dog wag its tail without the tail in turn "wagging the dog"? (consider a dog with a relatively massive tail.)

Answers

Final answer:

A dog wags its tail intentionally through muscle control; however, in the case of a very heavy tail, this could affect the dog's balance. To describe a dog to someone without sight, use sensory details beyond visuals. Lastly, although dogs communicate through barks and tail wags, this is not equivalent to human language.

Explanation:

The question appears to be asking whether the physical act of tail wagging in a dog with a particularly large or "massive" tail can cause the dog's body to move involuntarily as a result of tail movement (often humorously referred to as "the tail wagging the dog"). From a biological standpoint, a dog controls its tail via muscles at the base of the tail, meaning the dog intentionally wags its tail but does not typically move its entire body as a reflex of tail wagging. However, in practical terms, if the tail was significantly heavy, it could influence the dog's balance or body position, especially in a smaller dog or a dog with an abnormally large tail.

When explaining the experience of a dog to someone without sight, it is important to focus on sensory descriptions beyond the visual. Describing the dog's firm body, various textures of the fur, the swishing sound of a wagging tail, and the warmth of the animal can help in painting a more tangible picture of a dog's physical characteristics and presence.

As for animal communication, it's important to note that while animals do communicate with each other, their communication methods are not equivalent to human language. A dog's bark or tail wag is a form of non-verbal communication that conveys excitement, curiosity, or other emotions, but it doesn't translate directly to human spoken words.

which best statement best describes what a thylakoid does during photosynthesis

Answers

Thylakoid enables the light-dependent reactions to occur
thylakoid is a sheet-like membrane that triggered the reactions in chloroplasts and cyanobacteria.
Thylakoid could absorb light because it has colorful that enable it to create biochemical reactions in plant's food producing.

Answer:

Explanation:

Thylakoid enables the light-dependent reactions to occur

thylakoid is a sheet-like membrane that triggered the reactions in chloroplasts and cyanobacteria

Research shows that Mount Everest grows an average of 4 millimeters each year. How many years will it take to grow 720 millimeters

Answers

4 mm / year
720 mm = x years

4x = 720 mm
Divide both sides by 4
x = 180 years

To prove it:

4 mm * 180 years = 720 mm

Answer:

180 years.

Explanation:

To calculate this we will need to make a very simple calculation, called the "rule of three", which is a calculation used to find the ratio of three factors.

If we look at the question above, we will see that Mount Everest grows 4 millimeters per year (so in our calculation we will use the ratio 4 = 1), but we don't know how many years ago Mount Everest will grow 720 millimeters (so in our calculation we will use the proportion 720= x).

This way we will have the calculation:

4 = 1

720 = X

From this, we will imagine a diagonal line and multiply the values at the end of each line. This way we will have:

4 x X = 1x 720

As a result we will have:

4X = 720

Now we will move all numbers to one side and all letters to the other side. Since the number 4 is multiplying the letter X, it will move to the other side dividing the 720. So we have:

X = 720/4.

As a result we will have:

x = 180 years.

what do all living things not need ( a place to live,
parents, water, energy

Answers

If you are implying one these choices not needed for survival it would be parents only when you can survive on your own (I'm not that sure but I hope this helped the slightest but)

WILL GIVE A BRAINLEST

A vertical feeding pattern is _____.


the amount of food predators eat


a way for animals to avoid competition


the time of day animals eat


a separation of animal habitats

Answers

a way for animals to avoid competition.
Hope this helps ☺
A vertical feeding pattern is a way for animals to avoid competition. Hope this helped!

Cells spend most of their time dividing (in other words,in mitosis).

TRUE OR FALSE

Answers

It is true that cells spend most of their time dividing. In fact, they spend 78% of their "life" in interphase. 

Cells spend most of their time dividing or in mitosis. It is true that cells spend most of their time dividing. In fact, they spend 78% of their "life" in interphase. Thus, the given statement is true.

What is meiosis?

Cell cycles has been argued so far in this branch development in diploid daughter cells with identical genetic complements. Meiosis, in contrast, is a specialized kind of cell cycle that disrate the chromosome number by half, the outcome in the production of haploid daughter cells, throughout meiosis I, homologous chromosomes first pair with one another and then segregate into dissimilar daughter cells.

Egg and sperm cells have just 23 chromosomes each. That's half as many chromosomes as regular cells. Through the process of fertilization, egg and sperm join to make a cell with 46 chromosomes (23 pairs), called a zygote. For each chromosome pair, one homologous chromosome came from each parent.

During sexual reproduction two sex cells fuse to make a fertilized cell with one set of chromosomes the true about number of chromosomes is that the Egg and sperm cells have just 23 chromosomes each.

Therefore, Cells spend most of their time dividing or in mitosis. It is true that cells spend most of their time dividing. In fact, they spend 78% of their "life" in interphase. Thus, the given statement is true.

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"where in the rat's digestive system does mechanical digestion occur? chemical digestion occurs at three points along the digestive track. name those three points and what type(s) of foods are being chemically digested at each one."

Answers

In a rat's digestive system mechanical digestion occurs in the mouth, stomach. Chemical digestion occurs at three points, which are: In the mouth starch is partially digested, in the stomach proteins are digested, and in the small intestine the rest of the food (but not fiber) is digested.

What is the serosa?
A. The outermost of the two middle layers of the wall of the GI tract
B. The outer layer of the wall of the GI tract
C. The innermost of the two middle layers of the wall of the GI tract
D. The inner layer of the wall of the GI tract

Answers

The correct option is A.
The serosa refers to the outermost layer of loose connective tissues which is often covered by mucus and which contains blood vessels. In the gastrol intestinal tract, the serosa refers to the outermost layer of the wall of the GI tract. One major function of serosa is to reduce friction from muscle movement. 

A 49 year-old presents with an abscess of the right thumb. the physician incises the abscess and purulent sanguineous fluid is drained. the wound is packed with iodoform packing. what cpt® code is reported

Answers

Options are not provided in the question. I found the answer on the internet.

Answer: CPT code reported is 26010-F5
26010-F5 is a CPT code that refers to drainage of finger abscess.
F5 means right hand thumb. Since in the above question the patient presents abscess of the right hand thumb, it will be F5 and the fluid is drained so it will be 26010. So, the CPT code will be 26010-F5.

The enzyme glucose oxidase isolated from the mold penicillium notatum catalyzes the oxidation of β-d-glucose to d-glucono-δ-lactone. this enzyme is highly specific for the β anomer of glucose and does not affect the α anomer. in spite of this specificity, the reaction catalyzed by glucose oxidase is commonly used in a clinical assay for total blood glucose –that is, for solutions consisting of a mixture of β-d-glucose and α-d-glucose. what makes it possible for this test to measure total blood glucose?

Answers

The α anomer and β anomer of glucose interconvert quickly.
or the rate of mutarotation between the α anomer and β anomer is high.

Use your periodic table of elements. Take any element of your choosing (from period 4 or above) and answer the following questions:
( I choose silicon)
What is the element's name and symbol? Is it a metal, nonmetal, or metalloid? Which family does it belong to? How many protons, neutrons, and electrons does its neutral atom have?
Thanks!

Answers

Silicon's element name is Silicon. Silicon's symbol is "Si" Silicon is a metalloid. Silicon would belong in the Semi-Conductor's family. 14 Protons, 14 Neutrons and 14 Electrons (if the silicon element is neutral and the most common of it's atom.)

Answer:

What is the element's name and symbol?

Potassium (K)

Is it a metal, nonmetal, or metalloid?

Metal.

Which family does it belong to?

19 Protons, 20 Neutrons, 19 electrons

How many protons, neutrons, and electrons does its neutral atom have?

Alkali Metals

Explanation: Trust me, I'm in flvs and got full credit for this section of my 3.02 exam.

Use at least two examples to explain how technology has greatly increased food production in the world.

Answers

One example would be the chemicals they use in the soil to make the plants grow faster and another example would be chemicals they use to kill pest so they wont eat the crops or you could say bioengineering has enhanced the crops

Advances in science and technology have contributed significantly to the production of food in the world. Production capacity in agriculture has grown by 2.5 to 3 times over the past 50 years. This allowed, at a global level, that the increase in food production accompany the population increase.

An example of how technology has contributed to the increase in food production in the world is Transgenia. Through transgenic seeds, it was possible to plant crops that are more resistant to pests and to periods of drought, in addition, the transgenic crop has created crops with greater productivity. This has contributed greatly to the increase in food production.

Another example is the use of increasingly technological agricultural machinery, which can carry out agricultural work faster and more efficiently, reducing agricultural losses and contributing to increased production.

You respond to a patient whose chief complaint intestinal pain that is described as cramping. when taking the sample history you determine that she finished her dinner a short time ago. the patient also reports a history of atherosclerosis. you suspect that this patient has a life-threatening condition known as

Answers

mesenteric infarct is the answer

A community health nurse is using the dietary reference intakes (dris) as a guide while developing an education presentation about nutrition for a community group. how will the use of the dris be helpful in developing this presentation?

Answers

This can be used as an overall population guideline. The references can be used to make sure that everyone knows what the basic levels of nutrition should be for each group, and how each person or group can achieve those levels on a daily basis.
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