Which mechanism allows lipid-soluble substances to move through the membranes of endothelial cells of capillaries

Answers

Answer 1

Answer:

Diffusion.

Explanation:

Answer 2

The mechanism that allows lipid-soluble substances to move through the membranes of endothelial cells of capillaries is simple diffusion.

Simple diffusion is a passive transport mechanism that allows lipid-soluble substances to move across the membranes of endothelial cells in capillaries. This process occurs down a concentration gradient, from an area of higher concentration to an area of lower concentration, without the need for energy expenditure.

The membranes of endothelial cells, which make up the walls of capillaries, are composed of a lipid bilayer. Lipid-soluble substances, such as oxygen, carbon dioxide, steroid hormones, and certain lipid-soluble drugs, can readily diffuse through this lipid bilayer due to their ability to dissolve in and pass through the hydrophobic interior of the membrane.

Unlike lipid-soluble substances, water-soluble substances, such as ions and polar molecules, are unable to passively diffuse through the lipid bilayer. Instead, they rely on specific transport mechanisms such as facilitated diffusion or active transport to cross the endothelial cell membrane.

In the context of capillaries, simple diffusion allows lipid-soluble substances to move from the bloodstream through the endothelial cell membranes and into surrounding tissues or vice versa. This process plays a crucial role in the exchange of gases, nutrients, and waste products between the bloodstream and the tissues.

It is important to note that while simple diffusion allows for the passage of lipid-soluble substances, the movement of these substances can also be influenced by factors such as concentration gradients, molecular size, solubility, and the presence of transport proteins. However, the primary mechanism by which lipid-soluble substances traverse the endothelial cell membranes of capillaries is through simple diffusion.

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Related Questions

MITOSIS
Complete the sentences below by circling or filling in the correct words.
Mitosis is cell division of (germ, somatic) cells. The purpose of mitosis is to create new cells for
and
Mitosis produces four (different, identical) cells that are (diploid,
haploid)

Answers

Answer:

Cells divide and reproduce in two ways, mitosis and meiosis. Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells. Below we highlight the keys differences and similarities between the two types of cell division.

Explanation:

Involves one cell division?

Results in two daughter cells

Results in diploid? daughter cells? (chromosome? number remains the same as parent cell)

Daughter cells are genetically identical

Occurs in all organisms except viruses

Creates all body cells (somatic?) apart from the germ cells? (eggs and sperm)

Prophase is much shorter

No recombination/crossing over occurs in prophase.

 

In metaphase individual chromosomes (pairs of chromatids) line up along the equator.

During anaphase the sister chromatids are separated to opposite poles.

Which figure is the percent of energy at which one trophic level generally flows to the next level?
1)10%
2)35%
3)50%
4)100%

Answers

Answer:

Which figure is the percent of energy at which one trophic level generally flows to the next level 10

A mineral is defined as a natural substance that is neither animal nor plant, has a
A. specific composition and structure, and contains one or more silicon-oxygen tetrahedrons.
B. solid substance or element that is essential to human nutrition.
C. naturally occurring, crystalline, inorganic solid that contains only one element.
D. naturally occurring inorganic solid consisting of chemical elements in specific proportions, whose atoms are arranged in a repeated internal pattern.

Answers

Answer:

the answer is A. specific composition and structure, and contains one or more silicon-oxygen tetrahedrons.

Explanation:

what is the female body parts name​

Answers

Answer:

Uterus

Explanation:

A female reproductive organs are the vagina, uterus, fallopian tubes and ovaries

5.5% of the _____ is covered in ice

Answers

Answer:

5.5% of the earth is covered in ice?

brainliest please!

What 3 factors influence the rate of photosynthesis?

Answers

Light exposure, carbon dioxide levels and water levels

Which is NOT true about a carrier for a genetic disorder?

a. They are heterozygous for the disorder.

b. They have the disorder.

c. They had at least one parent with the disorder.

d. They may have siblings that have the disorder.
***Giving brainlist***

Answers

Answer:

b. They have the disorder.

it doesnt always show physical signs

Help with biology plzz USA test prep

Answers

Answer:

see below

Explanation:

amplification: MUTATION = a type of mutation

independent assortment: MENDELIAN = how different

genes independently separate from one another

when reproductive cells develop

nondisjunction: MUTATION = a type of chromosomal

mutation

translocation: MUTATION = another type of chromosomal

mutation

codominance: MENDELIAN = a relationship between two

genes where neither allele is recessive and both

are expressed

insertion: MUTATION = a type of mutation

radiation: MUTATION = causes mutations

virus: MUTATION = causes mutations as the virus

replicates

deletion: MUTATION = a type of mutation

law of dominance: MENDELIAN = one of Mendel's laws

of inheritance

sex linked traits: MENDELIAN = linkage is an exception

to Mendel's law of independent assortment

incomplete dominance: MENDELIAN = when none of the

factors of a gene is dominant and there is a blend,

such as a red flower crossed with a white flower

turns out pink

law of segregation: MENDELIAN = one of Mendel's laws

of inheritance

substitution: MUTATION = a type of mutation

The lake ecosystem where this food chain takes place is hosting a new fishing tournament. It is expected to be the largest fishing tournament in the state. The goal is to catch as many bass as you can over a 3-day period. What would be the effect on the food chain due to the fishing tournament

Answers

Answer:

The sunfish population should grow

Explanation:

Cuz me smort

the lysosomal enzymes show optimal activity in ------------ph.

Answers

the lysosomal enzymes show optimal activity in White blood cells

what is the answers Which sampling method is most suitable in calculating the population of mushroom on a field?
Pitfall trap
Pooter
quadrat
net​

Answers

Given what we know, the sampling method most suitable in calculating the population of mushrooms on a field is the quadrat.

What is the quadrat?A quadrat is a method used to directly count the number of an organism in a specific portion of a region. It is often used to get an estimated value as to the population density of the organism in the region.

Therefore, given the task at hand as well as the use of a quadrat, we can confirm that the most suitable method in calculating the population of mushrooms on a field is the quadrat.

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7. What are the characteristics of living things (list 5)?​

Answers

MRS GREN
Movement
Reproduction
Sensitivity
Growth
Respiration
Excretion
Nutrition

Which substances will float on water? (there are eleven, name all of them)

Answers

Answer:

bambo!

Explanation:

I need an explanation to this plz help!!

Answers

Answer: a.

Explanation:hop this helps

what is the meaning of the word treacherous mean in the sentence below

QUICK plzzzz

Answers

Answer:

Explanation:

guilty of or involving betrayal or deception.

"a treacherous agent and a detective working together?"

What can you infer is the reason fruit flies are the most commonly used organism for this type of investigation

Answers

In the case of genetic investigation, scientists used fruit flies as their model organism since they share 75% of the genes that cause disease with humans.  Fruit flies are also great to work in a research setting because they are relatively easy to take care of, especially compared to larger and more expensive organisms like rats or fish.Answer:

Explanation:

Hope this helps!!


The bulky shape of fat cells make them ideal for performing which of the following functions of connective tissue?
Bone movement
Nutrient transport
Filling spaces
Body support

Answers

The bulky shape of fat cells makes them ideal for filling spaces of connective tissue. The fat cells represent a type of connective tissue.

The adipose tissue is a type of connective tissue composed of fat cells known as adipocytes.

These cells (adipocytes) are specialized cells that store fats, which can be produced by the human body or obtained from the diet.

The shape of the adipocytes can be spherical, oval, polyhedral (as part of adipose connective tissue), etc.

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Answer: Filling spaces

Explanation:

Which is the most likely explanation for the change?​

Answers

Answer:

a beetle population moved to a greener habitat.....

1
Which of the following is BENEFIT of using natural fertilizer?
O its cost effective (cheap)
O you know exactly what nutrients/minerals are in it
it adds to the soil and makes it better long term
O it could lead to e. coli outbreaks

Answers

The effect of natural fertilization is adds to the soil and make it better long term

Where do the light-dependent reactions take place?
a. within the thylakoid membranes
b. within the mitochondria membranes
c. in the outer membrane of the chloroplasts
d. in the stroma of the chloroplast

Answers

Within tylakoid membranes

A, the thylakoid membranes

briefly describe the nebula theory formation of our solar system use the words protostar and protoplanets in your discussion

Answers

Answer:

Below!

Explanation:

Currently the best theory is the Nebular Theory. This states that the solar system developed out of an interstellar cloud of dust and gas, called a nebula. This theory best accounts for the objects we currently find in the Solar System and the distribution of these objects. The Nebular Theory would have started with a cloud of gas and dust, most likely left over from a previous supernova. The nebula started to collapse and condense; this collapsing process continued for some time. The Sun-to-be collected most of the mass in the nebula’s center, forming a Protostar.

A protostar is an object in which no nuclear fusion has occurred, unlike a star that is undergoing nuclear fusion. A protostar becomes a star when nuclear fusion begins. Most likely the next step was that the nebula flattened into a disk called the Protoplanetary Disk; planets eventually formed from and in this disk.

Three processes occurred with the nebular collapse:

Temperatures continued to increase The solar nebula spun faster and faster The solar nebula disk flattened

The orderly motions of the solar system today are a direct result of the solar system’s beginnings in a spinning, flattened cloud of gas and dust.

Hoped this helped.

[tex]-BrainiacUser1357-[/tex]

Rewrite the following equation in slope-intercept for. 6x - 4y = -5

Answers

Answer:

y = 3/2x + 5/4

Explanation:

Y = mx + b. DONE.

________________ translate the mRNA message into proteins, which may go into the cytoplasm, or enter the ER to be modified.
help!!!

Answers

Answer:

ribosomes

Explanation:

ribosomes translate RNA into protein

the general function of an enzyme in the body is to

Answers

Answer: Enzymes help speed up chemical reactions in the human body. They bind to molecules and alter them in specific ways. They are essential for respiration, digesting food, muscle and nerve function, among thousands of other roles.

Shown below are 4 stages (A,B,C,D) (not in sequence) of a certain kind of cell division.

Answers

The diagram below shows a cell undergoing mitosis (cell division). The correct order of the stages is B, C, D and A.

Mitosis is a type of cell division in which a parental cell divides to produce two genetically identical daughter cells.

In this case, an animal cell is undergone mitosis because the cell exhibits centrioles (only found in animal cells) and lacks cell walls (only present in plant cells).

The stages of mitosis include prophase, prometaphase, metaphase, anaphase, and telophase.

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The diagram below represents a plant cell in tap water as seen with a compound light microscope.
Which diagram best represents the appearance of the cell after it has been placed in a 15% solution for two
minutes?
SOS
(1)
(2)
(3)
(4)

Answers

Answer:

(3)

Explanation:

I believe 3 would be the answer here because when interacting with a salt solution, plant cells will look like that. Hope this helped!

Diagram 3 of the cell will represents cell's appearance after being kept in 15% salt solution.

This will happen because of exosmosis in which the water will move out of the cell causing to to get shrink called plasmolysis

What is osmosis?

It is the process of movement of solvents through a semi- permeable membrane from region of lower solute concentration to higher solute concentration.

There are three types of osmosis:-

Isotonic:- The solutions bring compared have equal concentration of solutesHypotonic:- The solution with lower concentration of solutesHypertonic:- The solution with higher concentration of solutes

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a. Do you think sodium carbonate is an acid or a base, and why? (2 points)

Answers

Sodium carbonate is a basic salt because it is a salt derived from a weak acid and strong base.

Help me out plz I’ll mark

Answers

Answer:

C

Explanation:

Answer:

Explanation:

I think its B

Which of the following structures is unique to meiosis?
A) Spindle poles
B) Centrosomes
C) Spindle microtubules
D) Tetrads
E) Kinetochores

Answers

D, tetrads. This is when homologous chromosomes line up next to one another and crossing over can occur in prophase 1.
It’s D) sorry if it’s not the right one because I’m not 100% sure

if you come across a child with swollen face hands and feet thin upper arms and weak muscles what would you primary advise the parents based on your biology knowledge?​

Answers

Answer:

I will tell them to take care of their child

Explanation:

HOPE IT HELPS!

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