Toluene crosses pure lipid bilayers many hundreds of times faster than a related compound, phenylalanine. Suggest two different properties of these molecules that would account for this difference.

Answers

Answer 1

Answer:

The lipid bilayer is hydrophobic that is hydrophobic and it can easily cross the lipid bilayer.

Toulene is a hydrophobic and neutral molecule compound so it can easily pass through the bilayer. It is an aromatic compound with a methane group attached to the benzene ring. It is smaller in comparison to Phenylalanine.

Phenylalanine-- It is an amino acid with a benzene ring attached to it. This amino acid is less hydrophobic than the aliphatic amino acids. Because of its less hydrophobic nature, it travels slowly compared to Toluene. It is also larger and has amino and carboxyl groups attached to it. On the other hand, Phenylalanine is a polar compound which has -COOH and -NH2 group. which prevents its delay in its transport across the lipid bilayer.


Related Questions

which fundamental units are involved in force do step Wise ​

Answers

Force = ma

We know, the unit that the S.I. unit of mass is Kg.

We also know that a = (v - u)/t.

We know that v = d/t and u = d/t and the S.I. unit of t(time) is s.

We know that the S.I. unit of d(displacement) is m.

So, the S.I. unit of v is m/s and the S.I. unit of u is m/s and the S.I. unit of t is s.

So, the S.I. unit of a is m/s×s or m/s²

So, the unit of force is

(unit of m) × (unit of a)

= kg × (m/s²)

= kg.m/s²

=

[tex]kg \: m \: {s}^{ - 2} [/tex]

Or more simply,

F = ma

=> F = m{(v-u)/t}

Putting units,

Newton = kg[{(m/s) - (m/s)}/s]

=> Newton = kg{(m/s)/s}

=> Newton = kg(m/s²)

=> Newton = kg.m/s²

=> Newton = kg.m.(s^-2)

explain water cycle with the help of diagram​

Answers

Explanation:

The water cycle is defined as a natural process of constantly recycling the water in the atmosphere. It is also known as the hydrological cycle or the hydrologic cycle. During the process of the water cycle between the earth and the atmosphere, water changes into three states of matter – solid, liquid and gas.

hope it helps.stay safe healthy and happy...

Which of the following is a material?
A. Wood
B. Rigid
C. Transparent
D. Dull

Answers

Answer:

A. Wood

Explanation:

Material is a physical object (something made up of molecules, atoms etc.)

Other listed options are characteristic of that given material. For example, an iron bar is a material, but its shiny lustre is its characteristics.

The material out of the given options is wood. Hence, the correct option is (A) Wood.

Material is something that is used to produce an item or thing. It is an essential element of the natural or synthetic substances that are employed for the manufacturing of different products. Material is used in everyday life as well as in the technical industry.

It refers to a substance that can be used as a raw material or as a semi-manufactured product to make an end-product. Materials are used to create a wide range of things, including clothing, food, medicines, buildings, automobiles, and other consumer goods.

Materials can be classified based on a variety of characteristics, including their composition, structure, and properties. Types of Materials: Materials can be classified into the following categories:

1. Natural materials, which include wood, rubber, and leather

2. Synthetic materials, such as nylon and polyester

3. Semi-synthetic materials, such as rayon

4. Composite materials, which include concrete and fiberglass

5. Electronic materials, which include semiconductors and superconductors

Features of materials: Materials have some characteristics, such as a particular physical and chemical composition, density, texture, and color, that differentiate them from other substances. Furthermore, materials can have a variety of properties, including thermal conductivity, electrical conductivity, tensile strength, ductility, and malleability.

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What’s the main reason why cell specialization is important

Answers

Explanation:

because we know that cell makes up organ and organ makes organ system and this system makes organism....cell is also the structural and functional unit of life it there were no cell specialization then mitosis and meosis wont take place neither cell division

A solid reactant is placed into a beaker of a warm water. The liquid vigorously bubbles as the solid dissolves into the solution. What will most likely happen if the temperature of the liquid is slightly reduced?
More bubbles will be produced because the solution is becoming more concentrated.
Fewer bubbles will be produced because of fewer collisions of reactant molecules.
The solid will get smaller at a faster rate because of more collisions of reactant molecules.
The solid will get larger at a slower rate because precipitate is coming out of the solution.

Answers

Answer: Fewer bubbles will be produced because of fewer collisions of reactant molecules.

Answer:

B: Fewer bubbles will be produced because of fewer collisions of reactant molecules.

Because the bell jar in the model lung cannot move, any changes in volume are a result solely of the movement of the rubber diaphragm. Match the position of the rubber diaphragm to changes in volume and pressure inside the bell jar and balloon size.

a. Galloons inflate
b. Balloons deflate
c. Volume inside bell jar increases
d. Volume inside bell jar decreases
e. Pressure inside bell jar decreases
f. Pressure inside bell jar increases

1. Rubber diaphragm up
2. Rubber diaphragm down

Answers

Answer:

1. Rubber diaphragm up-

b. Balloons deflate

d. Volume inside bell jar decreases

f. Pressure inside bell jar increases

2. Rubber diaphragm down-

a. Galloons inflate

c. Volume inside bell jar increases

e. Pressure inside bell jar decreases

Explanation:

The rubber diaphragm is the model to demonstart the various parts of the respiratory system and how they move during breathing process. In case of it moves down, the rubber diaphragm is stretched, the volume inside the bell jar increases which causes presursue decrease.

Balloon inhale or sucks in the air from outside and gets inflate. this increases the volume in the jar. The pressure is increased

In the aerobic metabolism of proteins by chemoheterotrophs (e.g., E. coli and you):____.
A. Proteins are broken down into smaller peptides and eventually into amino acids by proteases (peptidases).
B. Certain amino acids may be converted to pyruvate.
C. Certain amino acids may be converted to intermediates (e.g. oxaloacetate) of the Krebs cycle.
D. Certain amino acids may be converted to acetyl-CoA.
E. All of the above are true.

Answers

The answer is A because
A) proteins are broken down into smaller peptides and eventually into amino acids by proteases

Activity 3: Direction: Study the picture. Write the phases of the moon 1 new moon O first quarter O MOON PHASES last quarter waning crescent woving crescent Waning gibbous working globos​

Answers

Answer:

1.full moon

2.waxing gibbous

3.first quarter

4.waning gibbous

5.new moon

6.wabing cresent

7.last quarter

8.waxing cresent

1. ¿Cuáles son las células que contiene la retina?​

Answers

Answer:

Células fotorreceptoras: Son los conos y los bastones. Transforman los impulsos luminosos en señales eléctricas.

Células bipolares de la retina. Conectan las células fotorreceptoras con las células ganglionares.

Células amacrinas. ...

Células horizontales. ...

Células ganglionares de la retina.

The skin is protected by the action of cells that arise from bone marrow and migrate to the epidermis. Which cells serve this function?

Answers

Answer:

Langerhan's cells

Explanation:

The Langerhan's cells arise from the bone marrow and migrate to the epidermis. The Langerhan's cells are the body's first line of defense and play a significant role in antigen presentation. They need special stains to be visualized and are primarily found in the stratum spinosum. These are the mesenchymal origin obtained from CD34 positive stem cells of bone marrow and are part of the mononuclear phagocytic system.

Las semillas de las plantas, especialmente las más consumidas en nuestra dieta como el trigo, el maíz, el arroz y otros cereales o las lentejas, los porotos y otras legumbres, tienen un depósito de almidón que está destinado a alimentar el embrión en las primeras etapas del desarrollo, hasta que esté en condiciones de hacer la fotosíntesis por sí solo. ¿Con qué función de los lípidos se relaciona esta adaptación? Justificar.

Answers

Answer:

lol I dont know the answer

Which of the following explains why the Midwest is not suffering as severe damage from acid rain as are the northeastern states?
a. Midwest has few sources of acid rain-forming pollutants.
b. pH of rainfall in Midwest is significantly higher than that in the Northeast.
c. soils in the Midwest have a higher buffering capacity than do those in the Northeast.
d. soils in the Midwest have a lower buffering capacity than do those in the Northeast.
e. Midwestern soils have lower concentrations of toxic metals to be leached into watersheds.

Answers

Answer:

a. Midwest has few sources of acid rain-forming pollutants.

Explanation:

Midwest has few sources of acid rain-forming pollutants because Midwest has  less number of factories which produces less pollution. Farming, mining, and manufacturing of different products are the major industries Midwest. Other industries like transportation, finance, and machinery are also important for the economy of Midwest. Due to less number of factories less amount of pollutants goes to the atmosphere and will not cause acid rain.

A dead zone refers to Group of answer choices a) terrestrial areas in which excessive nitrogen fertilizer has essentially burned the soil, preventing plants and microorganisms from living there. b) oligotrophic areas in water bodies that cannot support life due to lack of nutrients. c) an ecosystem that was cleared of all vegetation for slash and burn agriculture. d) hypoxic areas in water bodies that limit marine and aquatic life.

Answers

Answer:

The correct answer is d) hypoxic areas in water bodies that limit marine and aquatic life.

Explanation:

A dead zone are oxygen-deprived regions, that is, they are large bodies of water that contain little or no oxygen, both in the depths and near the coasts in the oceans. Aquatic and marine dead zones can be caused by climate change, a product of human activity. When the temperature is high, the water does not have the same density and there is less exchange between the depths of the hydrogen peroxide and the surface water, and these no longer receive oxygen. Marine fauna, not finding the oxygen necessary for their survival, end up suffocating due to the lack of oxygen. They may also have reproductive problems and diseases, making it difficult for them to survive.

Discuss the sensory neurons for vision. What are the two
types of sensory neurons for vision? Where are they located?
What are their functions in the eye? What path does visual
input take AFTER reaching the sensory neurons (be specific,
outlining the entire path to the destination point of the brain)?

Answers

Answer:

Olfactory sensory neurons (OSN).

Explanation:

Olfactory sensory neurons (OSN) are the sensory neurons that is responsible for vision. Photoreceptors and olfactory sensory neurons (OSN) are the two types of sensory neurons for vision. Both olfactory sensory neurons (OSN) and photoreceptors is responsible for the receiving of photons and enable us to see things. The right half of the visual field will travel in the left optic tract, while on the other hand, the stimuli from the left half of the visual field will pass through the right optic tract.

Answer: The two types of sensory neurones are the CONES and RODS. Their functions are better outlined below

Explanation:

The CONES and RODS are the sensory neurones ( photoreceptors) of the eye which are located in the retina.

The RODS: They are extremely sensitive and can detect light of very low intensity. They also perceive light in black and white. They, therefore, play an important role in dim light.

The CONES: They function in bright light and are responsible for colour vision.

The path visual input take AFTER reaching the sensory neurons is as follows:

--> the rods and cones are stimulated

--> A pattern of electrical impulses is sent to the brain through the optic nerve which interprets it, drawing on past experience.

The brain tells us that the object is upright and gives us it's real size and distance from the eye. We, therefore, see the object as it actually is, and not as the image formed on the retina.

Innate talents or gifts enhanced through study and practice are:
A-drawbacks.
B-Holland's occupational types.
C-priorities.
D-abilities.

Answers

Answer:

D) Abilities

Explanation:

If you have a talent or a gift that is enhanced through study then you have the abilities to do so to be able to practice

Innate talents or gifts enhanced through study and practice are abilities. The correct option is D.

What are innate talents?

Innate talents are those talents that are present in the organism from birth, They are not learned or observed from outside. These abilities are only enhanced as we grow up. They are already present in the body.

They are the natural, talents that with we grow up. Innate talents are also called natural skills. They are genetically present in our bodies. Some people are born with natural potential and skills. But without hard work and practice, these skills would not work.

Abilities are the things that are used by the organism to perform activities. Every organism has some abilities.

Thus, the correct option is D. abilities.

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5. The major functions of carbohydrates irſclude
A. Structure framework. B. Storage C. Both Aan B
D . None of these​

Answers

Answer:

D

Explanation:

used to provide energy to the body

Consider the following statements:
1. RNA is ribonucleic acid.
2. RNA is used for information transport (known as mRNA). Choose the correct answer from the given codes:
A Only 1
B Only 2
C Both
D Neither 1 nor 2
E None of the above

Answers

Answer:

Only A

Explanation:

RNA is used for storing and transporting information through mostly virus only..

In the diagram below, which part of the human brain coordinates balance, movement, and other muscle functions so that the body moves smoothly? A B C​

Answers

Answer:

c

Explanation:

c is the cerebellum

b is the spinal chord

a is parietal lobe

define cell and atom​

Answers

Answer:

Cell: All living organisms are made up of cells, which are the basic building components. Cells also carry the body's genetic material and have the ability to replicate themselves. Cells are made up of several components, each of which serves a particular purpose. Organelles, for example, are specialized structures that perform specific activities within the cell.

----------------

Atom: Protons, neutrons, and electrons are the three subatomic particles that make up an atom. The nucleus, which is made up of protons and neutrons, is at the core of the atom, while electrons float around in a tiny cloud above it.

-------------------------

hope it helps...

have a great day!!

I never thought of that these statements alone are not
sidered for a grade
Answer the questions) below
A former patient comes into the dental office and states that she has recently been diagnosed with skin cancer. She demands her xrays and treatment record and claims that she was exposed to unnecessary radiat
during her visits How should the dental assistant respond? Can the dental assistant be held responsible?

Answers

Answer:

geuueieiejrjejdjjhdjsjdjsjeiei do it is custom returns and more and more than more and then send it out in a no to a good morning to kya hua hai aapko ❤️❤️ ab workouts and more ab mai

define cell and atom​

Answers

Answer:

Cell is made of molecules whereas atoms make up molecules. Cells are the smallest functioning unit in a living organism.

Atom is the smallest unit of matter. Usually, a cell is on the micrometer scale while an atom is in the angstrom scale.

OAmalOHopeO

Solve the equation of mava=mbvb max5.0ml=5.2mlx0.10m

Answers

Answer:

0.104M

Explanation:

The following equation is given in this question:

mava=mbvb

Where;

ma = molarity of acid (M)

mb = molarity of base (M)

va = volume of acid (ml)

vb = volume of base (ml)

According to this inputted values;

max5.0ml=5.2mlx0.10m

ma = unknown molarity of acid

mb = 0.10M

va = 5.0ml

vb = 5.2ml

Hence, ma x 5.0ml = 5.2ml x 0.10m

5ma = 0.52

ma = 0.52 ÷ 5

ma = 0.104M

The membrane potential that occurs when neurotransmitters bind to their receptors is called _______.

Answers

Answer:

action potential

Explanation:

Transmission of a signal within a neuron (from dendrite to axon terminal) is carried by a brief reversal of the resting membrane potential called an action potential. When neurotransmitter molecules bind to receptors located on a neuron's dendrites, ion channels open.

Answer:

I guess action potential is the correct one

If all 15 presynaptic neurons stimulate the post-synaptic neuron at the same time, will an action potential be produced?

Answers

Answer:

Yes

Explanation:

If all 15 presynaptic neurons stimulate the post-synaptic neuron at the same time, the action potential will be produced. In a chemical synapse, an action potential in the presynaptic neuron is responsible for the release of a chemical messenger known as neurotransmitter. After this, the neurotransmitter diffuses across the synapse and binds to the postsynaptic cell so we can say that potential can be produced.

Reviewing video surveillance is part of which alert food defense

Answers

Answer:

The correct answer is - look.

Explanation:

Alert is an acronym that is used in food defense that stands for Assure, Look, Employees, Reports, and Threat. It helps in increasing the awareness of food safety in food industries.

The Look is the type of alert that includes video surveillance in the food industry or store to check and maintain food safety and security. It helps in looking during and after the food defense.

The accurate solution is =look for is part of which alert food defense.

Alert is an acronym this is utilized in meals protection that stands for Assure, Look, Employees, Reports, and Threat. It facilitates in growing the attention of meals protection in meals industries.

The Look is the sort of alert that consists of video surveillance withinside the meals enterprise or shop to test and keep meals protection and security. It facilitates in searching in the course of and after the meals protection.

What is food defense?

Food protection is the safety of meals merchandise from infection or adulteration supposed to reason public fitness damage or financial disruption.

Thus it is well expailned.

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Indicate whether each of the following descriptions is true of microtubules (MT), microfilaments (MF), intermediate filaments (IF), or none of these (N). More than one response may be appropriate for some statements.
(a) Involved in muscle contraction.
(b) Involved in the movement of cilia and flagella.
(c) More important for chromosome movements than for cytokinesis.
(d) More important for cytokinesis than for chromosome movements in animal cells.
(e) Most likely to remain when cells are treated with solutions of nonionic detergents or solutions of high ionic strength.
(f) Structurally similar proteins are found in bacterial cells.
(g) Their subunits can bind and catalyze hydrolysis of phosphonucleotides.
(h) Can be detected by immunofluorescence microscopy.
(i) Play well-documented roles in cell movement.
(j) The fundamental repeating subunit is a dimer.
MT,
MF,
IF,
MT and MF,
MT and IF ,
MT, IF, MF.

Answers

Answer:

(a) Microfilaments

(b) Microtubules

(c) Microtubules

(d) Microfilaments

(e) Intermediate filaments

(f) Microfilaments, intermediate filaments, microtubules

(g) Microfilaments, microtubules

(h) Microfilaments, intermediate filaments, microtubules

(i) Microtubules, microfilaments

(j) Microtubules

Explanation:

Microtubules (MTs) are dimers of the protein tubulin (alpha- and beta-tubulin subunits) and they are major components of the cytoskeleton. MTs play diverse cellular roles including, mechanical support (cytoskeleton), transport, motility, chromosome segregation, etc. Microfilaments (MFs) are protein filaments that also form part of the cytoskeleton in eukaryotic cells. MFs consist of G-actin monomers assembled in linear actin polymers, and their functions include mechanical support, cytokinesis, changes in cell shape, amoeboid movement, endocytosis and exocytosis, etc. MFs associate with the protein myosin to generate muscle contractions. Actin filaments/MTs assembly from monomeric actin/tubulin is caused due to energy expenditure, where ATP/GTP bound to actin/tubulin is hydrolyzed during polymerization. Finally, intermediate filaments (IFs) are a type of cytoskeletal element composed of a heterogeneous group of structural elements, and they are not found in all eukaryotes. The primary function of the IFs is to contribute to the mechanical support for the plasma membrane where these filaments come into contact with other cells and/or with the extracellular matrix. The IFs are not directly involved in cell movement. All 3 types of cytoskeletal elements (microfilaments, intermediate filaments, microtubules) can be visualized by fluorescence microscopy when cells express chimeric MT/IF/MF.–GFP fusion proteins.

define cell and atom​

Answers

Answer:

hope it is helpful to you

Place the steps for providing first aid for bleeding in the correct order.
Raise the wounded area above
Place a sterile bandage.
Clean the wound
Apply pressure
the heart

Answers

The steps of first aid during bleeding is as follows:

Raise the wounded area above the heartapply pressureclean the wound apply pressure.

What is first aid?

First aid is the immediate help or assistance given to Ana accident victim before the arrival of a medical doctor ofbthe person is taken to the hospital.

The steps of first aid during bleeding is as follows:

Raise the wounded area above the heartapply pressureclean the wound apply pressure.

In conclusion, the proper steps taken for first aid will prevent bleeding.

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Answer:

clean the wound

Place a sterile bandage

Apply pressure

Raise the wounded area above the heart

Explanation:

this is the correct answer on Edge

What is a group of microscopic unicellular organisms

Answers

Protists are a diverse collection of organisms. While exceptions exist, they are primarily microscopic and unicellular, or made up of a single cell. The cells of protists are highly organized with a nucleus and specialized cellular machinery called organelles.

what's the target cells of melatonin?​

Answers

Explanation:

The suprachiasmatic nucleus appears as a target of melatonin in mammals.The pineal hormone may thus be involved in a feedback loop of the mammalian photoneuroendocrine system.

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Which statement describes data-sharing in a blockchain? 1. The fire ___ due to faulty insulation. But, for the time being, we cannot exclude a terrorist attack. A. may have started B .might be started C.could start D. must have started2. They _____ to the concert together because Jane had agreed to baby-sit for them. A. could go B.could have gone C. were able to goD. can go I don't know the difference ''could '' and ''were able to go ''. Can you help me?? Which of the following are structures of thelymphatic system? Check all that apply.HeartBone MarrowThymusSpleenBlood VesselsTonsilsAdenoids Find the range of the data.Scores: 81, 79, 80, 88, 72, 96, 86, 73, 79, 88 how natural vegetation and wildlife maintain the balance of our earth? Which of the following methods of accounting for investments is appropriate when the investor has significant influence over the investee?a. cost method.b. mark to market method.c. equity method.d. lower of cost or market method. The Veldt Questions1. Describe the nursery How did bombing change thepicture of war in WWII? simple answer please The introduction of the slave trade and its expansion throughout the eighteenth century had a transformative impacton those captured as well as the global economy. Although Africans died in massive numbers in captivity, slavery stillproved hugely profitable to planters, merchants, elites, and others. Explain how Africans were treated during the period of their capture, enslavement and seasoning After landing the aeroplane's momentum becomes zero. Explain how the law of conservation holds here. Solve for x. Round to the nearest tenth of a degree, if necessary. Nickel + oxygen = nickel oxide. What is the balanced redox reaction? which of these is not associated with successful reform movements? a. New organizations b.bureaucracy c. social policy d.Cultural change Usa el se impersonal para completar las oraciones con los verbos batir, cortar, hablar, lavar, mezclar, necesitar, poder, poner, o preparar. (Use the impersonal self to complete sentences with the verbs beat, cut, speak, wash, mix, need, power, put, or prepare.)1. Para preparar un sandwich de jamn y queso, _______ el jamn y el queso en lonchas.2. Para alimentarse bien, _________ comer de los cuatro grupos esenciales de alimentos.3. Primero ______ el brcoli y luego ______ en el agua a hervir.4. En este restaurante ______ los mariscos con ajo y hierbas.5. Segn la receta, ________ todos los ingredientes en una fuente grande.6. En una parrillada argentina, _______ varios tipos de carne.7. _______ francs en ese restaurante?8. ________ los huevos para preparar una tortilla espaola? Based on an examination of the risk and return data for a variety of alternative investments during the period of 1926-2011, which of the following statements is correct? Over the period of 1926-2011, the general trend of increasing riskiness among the following five assets is: U.S. Treasury bills, U.S. government long-term government bonds, long-term corporate bonds, large-company stocks, and small-company stocks. Over the period of 1926-2011, the general trend of increasing return among the following five assets is: U.S. Treasury bills, long-term corporate bonds, U.S. government long-term bonds, large-company stocks, and small-company stocks. Large-company stocks, rather than small-company stocks, exhibit the greater risk and the greater return. Small-company stocks, rather than long-term corporate bonds, exhibit both the greater return and the greater standard deviation. What does y equal in the solution of the system of equations below? 5y-3x-4z=22 2z-2x=-6 2z+3x=-6 Meghan sells advertisements for a radio station. Each 30 second ad costs $20 per play, and each 60 second adcosts $35 per play. Meghan sold 12 ads for $315. She wrote the system below letting x represent the number of 30second ads and y represent the number of 60 second ads.X+ y = 1220x+35y = 315What is the solution to the system of equations?Need answers ASAP!!!! Propuso la teora catastrofista, segn la cual haban sucedido varios episodios de extincin, debidos a grandes cataclismos, seguidos siempre de nuevos periodos de creacin A solid wooden block in the shape of a rectangular prism has a length, width and height For each of the following transactions that occur in their lives, identify whether it is included in the calculation of U.S. GDP as part of consumption (C), investment (1), government purchases (G), exports (X), or imports (M). Transaction i. Andrew's employer upgrades all of its computer systems using U.S.-made parts. ii. Beth gets a new refrigerator made in the United States Andrewbuys a bottle of Italian wine. iii. The state of Pennsylvania repaves highway PA 320, which goes through the center of Swarthmore. iv. Beth's father in Sweden orders a bottle of Vermont maple syrup from the producer's website,