Explain why the steroid hormone estradiol (MW 272) readily crosses membranes by simple diffusion but the much smaller H requires transport proteins

Answers

Answer 1

Answer:

Estradiol has a higher partition coefficient than H+ ions

Explanation

Estradiol is a non-polar and hydrophobic molecule that has a higher partition coefficient than H+ ions, it means that the cell membrane is more permeable to this molecule because it can dissolve in and diffuse within the hydrophobic phase of the membrane. The movement of polar charged molecules (even small H+ ions) requires the input of energy to be able to dissolve within the lipid bilayer. In consequence, the movement of H+ ions requires proteins capable of transporting these protons through the membrane.


Related Questions

Circle the word that best completes the statement about cell theory.
6. The cell theory states that:
i. All organisms are made of organelles / cells.
ii. All existing cells are produced by other living dead cells.
111. The atom cell is the most basic unit of life.
7. Cell theory is one of the great unifying theories of biology / chemistry.
MAIN IDEA: Prokaryotic cells lack a nucleus and most internal structures of
eukaryotic cells.

Answers

Question reformatted:

Circle the word that best completes the statement about cell theory.

6. The cell theory states that:

i. All organisms are made of organelles / cells.

ii. All existing cells are produced by other living / dead cells.

iii. The atom / cell is the most basic unit of life.

7. Cell theory is one of the great unifying theories of biology / chemistry

Answer:

6. The cell theory states that:

i. All organisms are made of cells.

ii. All existing cells are produced by other living cells.

iii. The cell is the most basic unit of life.

7. Cell theory is one of the great unifying theories of biology

Explanation:

Cell theory is one of the central theories of biology and is universally accepted. It states that all organisms are cellular - that is they are made of cells. It also states that all living things come from other living cells (not spontaneously, or from dead cells). The cell is the most basic unit of life, organisms can be unicellular, but no living thing is 'less' than that.

Both strands of the DNA double helix contain nitrogenous bases held together by hydrogen bonds. In DNA, the sequence of nitrogenous bases varies widely. What is the significance of the nitrogenous bases?

A. They determine the amino acids in the proteins synthesized.
B. They prevent mutations from occurring in the process of DNA replication
C. They help complete the sugar-phosphate backbone of DNA molecules.
D. The amount of adenine and cytosine determines the length of the gene on a DNA molecule.

Answers

Answer:

A

Explanation:

Essentially, in the process of protein synthesis, there is first transcription where mRNA is synthesized off of a DNA strand with complementary nitrogenous bases. After processing occurs (in basic terms the mRNA is literally processed) and the mRNA strand leaves the nucleus, it attaches to a large and small ribosomal subunit (a ribosome) where translation occurs. The gist of it is when the mRNA strand is being read by the ribosome. tRNA will come over and bind temporarily bringing with it a specific amino acid, starting the formation of the polypeptide/amino acid chain. Nitrogenous bases play into this as the sequence of the nitrogenous bases is what determines what tRNA will bind onto it which determines which amino acid is brought. More specifically, this deals with the codons of the mRNA and the corresponding anticodons with the tRNA, which is a bit of a more specific topic.

The nitrogenous bases help complete the sugar-phosphate backbone of DNA molecules. The correct option is C.

What is DNA?

DNA, also renowned as deoxyribonucleic acid, is a complex molecule that includes all of the information required to construct and retain a lifeform.

DNA is found in the cells of all living things. In real sense, as in almost every cell in a multicellular organism contains the entirety of the organism's DNA.

DNA is composed of chemical key components known as nucleotides. These building blocks are composed of three components: a phosphate group, a sugar group, and one of four different types of nitrogen bases.

Nucleotides are linked together in chains, with the phosphate and sugar groups alternating.

Thus, the correct option is C.

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How does a cell deal with the buildup of hydrogen peroxide?

Answers

Answer:

They actually have a protein that breaks it down into harmless components: water and oxygen. Enzymes are proteins that speed up the rate of reactions, and there is a particular enzyme that can help break down hydrogen peroxide.

When salt is dissolved in water, the water is the
solute
solvent
solution

Answers

it becomes a solution

Answer:

solution

yeyeyeyeyeyeyeyyeeyeyyeyeye

What organelle is attached to the Rough ER

Answers

Answer:

Ribosomes

Explanation:

Answer:

The ribosomes.

Explanation:

how do birds the ant seen here reproduce​

Answers

Birds attach the bur of the plant which helps in the pollination. The birds sit on the plant and the burs of the plant gets attached in the legs of the birds which is transferred from one place to another.





Can I get brainliest please

Which of the following is a reason for the genetic variability from sexual reproduction?
A. The more variety there is in the gene pool, the less arrangements in the population.
B.The genes that are “dealt” to the offspring from their parents are by systematic event.
C. Offspring have the same gene combinations of either of their parents.
D. Members of a species choose mates, creating different combinations of genes.
Please help. This is due today.

Answers

Answer:

the answer is d opinion

When ATP is hydrolyzed, are you adding water or removing it? Explain 20 points I’ll do brainlest too

Answers

Answer:

Are there answers

Explanation:

Answer:

adding water

Explanation:

hydrolysis means adding water to it

HEYY YOU GUYS AGAIN. I HAVE A COUPLE OF QUESTIONS I NEED HELP ON. IF YOU CAN, PLEASE HELP ASAP.
which moon phase occurs when the moon is between the earth and the sun??
a. full moon.
b. waxing crescent.
c. new moon.
d. waning crescent.

Answers

Answer:

New Moon

Explanation:

There are eight phases of the Moon, which repeat every 29.5 days. New Moon. A new moon is usually not visible to the naked eye, as only the unlit portion of the Moon is exposed. This phase occurs when the moon is situated directly between the sun and the Earth. A solar eclipse can only occur during this phase. Waxing Crescent

C.New Moon A solar eclipse can only happen at new Moon. A waxing crescent moon is when the moon looks like a crescent and a crescent increases in size from one day to the next

During my ptosis a single cell divides to produce two daughter cells what must happen in the original cell so that each daughter cells can I have a complete set of chromosomes

Answers

Answer: 3d illustration depicting cell division, a process whereby a cell divides into two new daughter cells with the same genetic material.

Explanation:

1. What groups listed below have true cell walls?
A. algae
B. mycoplasmas
C. Gram-positive bacteria
D. fungi
E. protozoans

Answers

Answer:

D. Fungi

Explanation:

The fungal cell walls are made of complex & flexible structure that is made of glycoproteins, pigments chitin and α- and β- linked glucans

D.Fungi (this is the right answer i just don’t know how to explain)

which 3 reactions form atp?

Answers

Answer:

Answer below

Explanation:

The eight steps of the citric acid cycle are a series of redox, dehydration, hydration, and decarboxylation reactions. Each turn of the cycle forms one GTP or ATP as well as three NADH molecules and one FADH2 molecule, which will be used in further steps of cellular respiration to produce ATP for the cell.

what are catabolic reactions

Answers

Answer:

which complex molecules are broken down to simpler components, are classified as catabolic reactions. Taken as a group of reactions within a cell or even an organism, they can be referred to as the cell's or organism's anabolism or catabolism.

Explanation:

Catabolic reactions are a type of metabolic reaction that take place within a cell. Larger molecules are separated to form smaller molecules, as in the case of respiration where glucose is broken down to form carbon dioxide and water. Often they are hydrolysis reactions in which water molecules are used to break bonds.

Select the correct answer.
Jayden is taking a test. He has to write why scientists support the theory that life began near hydrothermal vents in the ocean. Which point should he include in his answer?
A.
Hydrothermal vents were closest to ocean surface, and therefore could receive oxygen.
B.
Oceans were dry and only had water near the hydrothermal vents in the earlier ages.
C.
Even today, all life forms are first born near hydrothermal vents and they later migrate to land.
D.
Fossils of archeabacteria, which are early common ancestors, were found near hydrothermal vents.

Answers

Answer:

The answer is; D

Archaebacteria are early life forms on earth. They utilized the process of chemosynthesis to make organic molecules from inorganic molecules and for energy. The word archae means ‘ancient’ life forms. These single-celled organisms evolved around sulfur-rich environments of the hydrothermal vents.

Answer:

D

Explanation:

What is the primary use of the sugars that the algae produce?

Answers


Featured snippet from the web:
Photosynthesis is the process by which light energy is converted to chemical energy whereby carbon dioxide and water are converted into organic molecules. The process occurs in almost all algae

1. The increase in the reproductive success of a species will have the greatest impact on
the-

Answers

Answer:

The increase in the reproductive success of a species will have the greatest impact on the prey of the animal.

Explanation:

The prey's population will decrease because there are more animals needing it to survive.

4. Which of the following statements BEST explains why you can hear noises
long distances at night?
A. There are fewer other noises at night.
B. Water conducts sound better at night.
C. Sound bounces off water better at night.
D. Sound waves are bent towards the cool air.

Answers

A: There are fewer other noises at night.
Please give brainliest :) Hope this helps

i guess its answer is option D

Different energy sources provide different benefits to individuals and the environment. What are some nonpolluting sources of energy? a. coal, oil, and natural gas. c. alcohol and acetylene. b. nuclear energy. d. wind, solar, and hydroelectric power.

Answers

Answer:

Its D

Explanation:

Because they cause no harm to the environment and they are very safe to the environment.

Answer:

D

Explanation:

I took the test on edge

amino acid structure: the only part of the amino acid structure that varies between the amino acids and makes each type unique is

Answers

Answer:

The side groups are what make each amino acid different from the others. Of the 20 side groups used to make proteins, there are two main groups: polar and non-polar. These names refer to the way the side groups, sometimes called "R" groups, interact with the environment.

Explanation:

what is thesaurus and online resources? ​

Answers

Answer:

thesaurus is a book that is filled with all types of synonyms for words

synonyms are words that are different but same in meaning

eg: yummy

another word for yummy is delicious

so delicious is a synonym that is included in the book named thesaurus

hope it helps

; )

Explanation:

1 Sustainability means: A. Meeting present needs without compromising needs of future generations B. Meeting present needs without the concern for future generations C. Ignoring the needs of current generations to help future generations D. Sustaining fish at a certain depth in the ocean 15 (1 Point)​

Answers

Answer:

A

Explanation:

Which is an abiotic factor that most limits the number of frogs living in a pond?

Answers

Answer:the temperature of the water

Explanation:

NEED ANSWER ASAP! Aside from safety, which of the following is an additional benefit of understanding animal behavior? A Reduced stress improves the health, fertility, and production of animals B Animals that feel understood are more likely to stifle aggressive tendencies C Well trained animals receive a higher market value than do untrained animals D Handling that have a strong connection to their animals often get breeding rights​

Answers

Answer:

I think its A.........

Answer:

It's A

Explanation:

what shoukd the patient expect to experience living with the disease- Sitius Inversus?? in ur own words

Answers

Answer:

there is a complete mirror image transposition of the thoracic (chest) and abdominal organs , and anterior-posterior (front-back) symmetry is normal. Many affected people have no associated health issues when the condition is isolated.

Explanation:

Which answer best explains how most scientists think that planets form? A. Large chunks of matter break off a star that collides with another star; these chunks then become planets orbiting the star. B. Large chunks of matter break off a planet that collides with a smaller body; these chunks gradually clump together to become a new planet. C. A rotating cloud of space dust and gases begins to flatten and condense, forming a new star; the remaining matter forms an accretionary disc around the star, gradually coalescing to form planets. D. A rotating cloud of space dust and gases begins to condense, forming a protoplanet; if the protoplanet is massive enough, its gravity will attract nearby matter until the protoplanet becomes large and round enough to be considered a planet.

Answers

Answer: B

Explanation:

Thats what the teacher told me

The scientists believe that planets form when a rotating cloud of space dust and gases flattens and condenses, forming a new star; the remaining matter forms an accretionary disc around the star, gradually coalescing to form planets, as described in Option C, also known as the "nebular hypothesis."

What is the nebular hypothesis?

The nebular hypothesis is the most widely accepted scientific theory for the planetary systems, such that the solar system and, as per this theory, a cloud of gas and dust, called a nebula, collapse due to gravitational forces; the nebula contracts, and it rotates faster, flattening into a disk, which eventually cools and condenses, forming a protoplanetary disk.

Hence, the scientists believe that planets form when a rotating cloud of space dust and gases flattens and condenses, forming a new star; the remaining matter forms an accretionary disc around the star, gradually coalescing to form planets, as described in Option C, also known as the "nebular hypothesis."

Learn more about the nebular hypothesis here.

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Which stroke or style is usually swum in a warm-up?

Answers

Answer:

The #1 stroke referred to in the warm-up is the stroke you're focusing on in the upcoming session, your main event this session. After sitting around for an hour or so waiting for your event, it's important to wake up the muscles and increase the blood flowing through your body again.

There are many reasons why all humans do not perceive sounds similarly in our environment, including adaptation, hearing loss and/or deafness.
For 2A-2D, first determine whether the scenario is an example of sensory adaptation, conduction deafness, sensorineural deafness, and/or central deafness.
Second, for the scenarios that are examples of deafness, explain briefly how the scenario leads to deafness (i.e., how does the scenario alter normal auditory processing). If you have selected sensory adaptation as an answer, explain briefly why the scenario does not fall under the categorization of deafness. Use your own words to briefly explain - simply listing definitions is not sufficient. (2.5 points each for matching, 5 points each for correct justification)
2A. Listening to excessive loud noises everyday over years that causes loss of stereocilia
2B. Hearing construction outside when it first begins, but no longer noticing the sound minutes later
2C. Difficulty understanding speech, but no damage to ears or ability to understand nonverbal sounds
2D. A hole in the tympanic membrane caused by an ear infection

Answers

Answer: 2A Sensorineural deafness

              2B Sensory adaptation

              2C Central deafness

              2D Conductive deafness

Explanation: The human ear is divided into 3 parts:

Outer Ear: auricle, ear canal and tympanic membrane;Middle Ear: eardrum, tympanic cavity and ossicles (malleus, incus and stapes);Inner Ear: oval window, semicircular ducts (attached to cochlea and nerves), cochlea and auditory tube;

The Sensorineural deafness is a type of deafness caused by a damage in the inner ear, either the cochlea or the auditory nerve. It can happen because of medicine toxicity, exposure to noise along the years etc.

So, from the scenarios above, 2A is consistent with sensorineural deafness  since stereocilia are hair cells of inner ear.

Sensory adaptation is a phenomenom that happens when an individual's sensory receptors is exposed to a stimuli for a prolonged period of time. For example, the situation described in 2B. It is not considered deafness because it is not caused by a damage in any part of the ear.

Central deafness is a very rare case of deafness. The damage in this type of deafness is in the brain and not in any of the 3 parts of the ear. That's why the scenario in 2C is the example of this.

Conductive deafness is the second most common type of ear problem and it occurs in the outer ear. One of the causes is blockage in the ear canal by the ear wax, external bodies, osteomas (bone growth) or otitis (oute ear infection). An example of this type of deafness is scenario 2D.

Which letter marks the zone of inhibition?

Answers

Answer:

A. B

Explanation:

"B" as labelled in the above is the zone of inhibition.

The Zone of Inhibition is actually a test which is used to assess antimicrobial activities of a material or solution in relation to an micro-organism as a target. It is also known as Kirby-Bauer Test. It measures the antibiotic resistance and also used to inhibit microbial growth.

At the Point B, microbes can not grow in there; they are inhibited.

In the test, if bacterial strain or any other strain is susceptible to the antimicrobial agent, a zone of inhibition appears. If it shows resistance to that agent, then no zone is evidential.

To kill a fungus, you could use a fungi-_______

Answers

Answer:

antivirus

Explanation:

To kill a fungus, you could use a fungi-antivirus

QUESTION 6
Which statement is true about graded potentials?
a. They always produce action potentials.
b. They always depolarize a neuron.
c. They change the voltage of a neuron by different amounts.
od. They are "all-or-none."
Click Save and Submit to save and submit. Click Save All Answers to save all answers.

Answers

The answer is B.I believe
Other Questions
Caleb and Sergio stacked boxes on a shelf. Caleb lifted 14 boxes and Sergio lifted 12 boxes. The boxes that Sergio lifted each weighed 10 lb more than the boxes Caleb lifted.Let c represent the weight of each box Caleb lifted.Which expression represents the total number of pounds Sergio lifted?120c10(c12)12(c+10)c + 10 Plz help :( I dont understand which of these is correct? will give brainliest C: Appendix 1: Gross and net methods for sales discounts The following were selected from among the transactions completed by Strong Retail Group during August of the current year: Aug. 5. Sold merchandise on account to M. Quinn, $7,500, terms 2/10, n/30. The cost of the merchandise sold was $4,200. 9. Sold merchandise on account to R. Busch., $4,000, terms 1/10, n/30. The cost of the merchandise sold was $2,100. 15. Received payment on account for the sale of August 5 less the discount. 20. Sold merchandise on account to S. Mooney, $6,000, terms n/eom. The cost of the merchandise sold was $3,300. 25. Received payment on account for the sale of August 9. 31.Received payment on account for the sale of August 20.A. Journalize the August transactions using the gross method of recording sales discounts. Aug. 5 Accounts Receivable-M. Quinn 7,500Sales 7,500 Cost of Goods Sold 4,200 Inventory 4,200 Accounts Receivable-R. Busch 4,000 Sales 4,000 Cost of Goods Sold 2,100 B. Journalize the August transactions using the net method of recording sales discounts. 6 inches for every horizontal change of 12 inches 5 sentences !, Ill give brainliest and help too Angela went to the farmers' market to buy some vegetables. She wanted some yellow squash and zucchini which were both on sale for $1.48 per pound. Angela bought 245 pounds of yellow squash and 3110 pounds of zucchini. To the nearest cent, what was the total cost of the vegetables? (5x10^3) + (4.3x10^4)= 16. Which of the following can be explained at point B? Lithosphere B Mantle Outer core Inner core O plates move apart and volcanoes form O plates move past each other sideways O plates are not moving O plates move toward each other and volcanoes form The pOH of an aqueous solution of 0.480 M trimethylamine (a weak base with the formula (CH3)3N) is . Which graph represents the function f(x) = |x|-4? Which statement best summarizes what US manufacturing had accomplished by 1900? Which element of the romantic movement is present in this excerpt from the "The Solitary Reaper" by William Wordsworth? Will no one tell me what she sings?-- Perhaps the plaintive numbers flow For old, unhappy, far-off things, And battles long ago: Or is it some more humble lay, Familiar matter of to-day? Some natural sorrow, loss, or pain, That has been, and may be again? Whate'er the theme, the Maiden sang As if her song could have no ending; I saw her singing at her work, And o'er the sickle bending;-- I listened, motionless and still; And, as I mounted up the hill, The music in my heart I bore, Long after it was heard no more. True or False: A Precipitate is a solidthat forms out of a liquid solution as aresult of a chemical reaction I WILL GIVE BRAINLIEST Lean and Six Sigma models contradict one another,TrueFalse Help PLZ ;) If the distance between two objects increases, what happens to the force of gravity between them?(A) Increases(B) Decreases(C) Stays the same what inferences can we make regarding earthquake magnitude, frequency, or concentration I NEED HELP FAST, FASTER THAN THE SPEED OF SOUND, EVEN FASTER THAN THE SPEED OF LIGHT Which statement best describes the role of South Carolina Andrew Pickens in the Battle of Cowpens?A. He led a group of about a thousand PatriotsB. Pickens used the sheer size of his army to scare the small group of British SoldiersC. Pickens used his connections with the local Cherokee tribe to help them beat the BritishD. He organized a French and Patriot attack, which outnumbered the British NEED IT ASAP!!!!!!!!!!!!!!!!!!!!PART A: Which of the following identifies the central idea of the text? *Though Lincoln played a significant role in abolishing slavery, Douglass was primarily responsible for this outcome.Lincoln found Douglasss approach to abolishing slavery to be too radical and often had to intervene to maintain peace.Douglass and Lincolns primary objective during the Civil War was to abolish slavery, at whatever cost.Despite their different approaches and opinions on slavery, both Lincoln and Douglass contributed to abolishing it. Which of the following situations have a sum of zero? Select all that apply.1. Shawna spends $20 on materials to make bracelets for her friends. She then earns $20 from selling the bracelets.2. A diver dove down 20 1/4 feet under water and then descended 20 1/4 feet.3. A golfer shot 2 over par (+2) on a hole. They then then shot 2 under par (2) on the next hole.4. You have $5.50 in your pocket and then you receive $5.50 for doing your chores.