Answers
Answer:
Its a semipermaeble mambrane
Explanation:
Semipermeable membrane is a type of biological or synthetic, polymeric membrane that will allow certain molecules or ions to pass through it by diffusion.
Related Questions
a/ Một nguyên tử X có tổng số các loại hạt bằng 18
b/ Một nguyên tử Y có tổng số hạt cơ bản 58 và số khối nhỏ hơn 40. Hãy xác định các nguyên tử trên. Biết số khối A = N+P
Answers
Explanation:
a) p+e+n=18
mà p=e=z => 2p +n=18
câu a có thiếu dữ kiện không?
Can someone help me with Earth Science, please? I'll really appreciate it.
1. Describe some surface mining methods.
2. What are some ways an area can undergo reclamation after being mined?
3. What makes a gemstone valuable?
4. How is an atom different from an ion? How is an atom different from an element?
5. How is a molecule different from an element? Can a molecule be an element?
6. In which type of bonding are electrons shared? In which are they given or taken? Which type of bond is stronger?
7. What is a crystal?
8. What are the eight major mineral groups?
9. How does the native elements mineral group differ from all of the other mineral groups?
10. Which properties of a mineral describe the way it breaks apart?
11. Apatite scratches the surface of an unknown mineral. Which mineral would you use next to test the mineral’s hardness—fluorite or feldspar? Explain your reasoning.
12. What is the difference between magma and lava?
13. Explain how mineral veins form.
Answers
Answer: 1:There are five recognized types of surface mining, each with specific variations depending on the minerals being extracted. These include strip mining, open-pit mining, mountaintop removal, dredging and highwall mining.
2:Refilled/reshaped w/vegetation planted; filled w/water to become a lake; turned into landfill; left open as home for bats or sealed off if underground.
3:Physical characteristics that make a colored stone valuable are color, clarity to a lesser extent (emeralds will always have a number of inclusions), cut, unusual optical phenomena within the stone such as color zoning (the uneven distribution of coloring within a gem) and asteria (star effects).
4:Atoms where the electrons and protons are not equal are called ions. Ions are charged particles. They can be either positively charged ions or negatively charged ions.
5:Molecule is a substance with two or more atoms bonded together such as the oxygen humans breathe (O2). Elements are pure substances made up of all the same atoms such as gold (Au), hydrogen (H), and oxygen (O). Elements all have the same number of protons in their nuclei and can't be broken down.
6:A covalent bond involves electrons being shared between atoms. The most stable state for an atom occurs when its valence electron shell is full, so atoms form covalent bonds, sharing their valence electrons, so that they achieve a more stable state by filling their valence electron shell.
7:A crystal or crystalline solid is a solid material whose constituents are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.
8:How does the native elements mineral group differ from all of the other mineral groups? Native elements contain atoms of only one type of element. Only a small number of minerals are found in this category. Some of the minerals in this group are rare and valuable.
9:How does the native elements mineral group differ from all of the other mineral groups? Native elements contain atoms of only one type of element. Only a small number of minerals are found in this category. Some of the minerals in this group are rare and valuable.
10:Cleavage. The way in which a mineral breaks along smooth flat planes is called cleavage. These breaks occur along planes of weakness in the mineral's structure. However, if a mineral breaks along an irregular surface, it does not have cleavage.
11: I would use fluorite to test the hardness because apatite has a higher hardness then fluorite does mean that the unknow mineral is lower on the hardness test then both apatite and feldspar. 5. Why is streak more reliable than color when identifying a mineral?
12:magma for molten rock that is underground and lava for molten rock that breaks through the Earth's surface.
13:In geology, a vein is a distinct sheetlike body of crystallized minerals within a rock. Veins form when mineral constituents carried by an aqueous solution within the rock mass are deposited through precipitation. The hydraulic flow involved is usually due to hydrothermal circulation.
Explanation:
how do you describe the shape of each sample of matter? do the ice cubes have a definite shape? how about the water? how about the vapor?
Answers
Answer:
Both no
Explanation:
be because it is liquid, they don't have fix shape
What is the structure of a Triglyceride?
A. A glycerol head with 3 fatty acid tails
B. 3 Glycogen heads connected to a Hydroxyl tail
C. 3 Hydroxyls connected to a glyceride
D. A glycerol head with 2 fatty acid tails
Answers
Answer:
A. A glycerol head with 3 fatty acid tails
Explanation:
One glycerol attached to 3 fatty acids each
The structure of a Triglyceride is a glycerol head with 3 fatty acid tails. Hence the correct option is A.
The structure of a triglyceride consists of a glycerol molecule bonded to three fatty acid tails. Glycerol is a three-carbon alcohol with a hydroxyl group attached to each carbon, while fatty acids are long hydrocarbon chains with a carboxyl group at one end. Through a condensation reaction, the hydroxyl group of each glycerol molecule combines with the carboxyl group of a fatty acid, resulting in the formation of an ester bond.
This process is repeated three times, with each fatty acid binding to a different carbon of the glycerol molecule, thus forming a triglyceride. The three fatty acid tails provide energy storage and insulation properties, while the glycerol molecule serves as a backbone for their attachment. Triglycerides are the main storage form of fat in animals and plants.
Hence the correct option is A.
To know more about Triglyceride here
https://brainly.com/question/28201446
#SPJ2
Hormones are chemical molecules produced by glands. Vasopressin is a hormone secreted by the cells of the hypothalamus, a part of the brain. The hormone regulates homeostasis through its effect on the kidney cells. Which statement is true based on this information?
Answers
Answer:
Hormones are chemical molecules produced by glands is true
Answer:
Hormones are chemical molecules produced by glands.
Explanation:
TRUE
Maintaining a rich variety of genetic material that may lead to discoveries useful to juman can be ensured by?
Answers
Answer:
Maintaining a rich variety of genetic material that can lead to discoveries useful for humans can be ensured by preserving biodiversity. Explanation: Options for this question are: Preserving biodiversity .Hope this is fine for youDefine the word ⇒ matter
Answers
Answer:
matter is what makes up everything, every type of organism, every object, etc.
Explanation:
Answer: 1.
physical substance in general, as distinct from mind and spirit; (in physics) that which occupies space and possesses rest mass, especially as distinct from energy.
"the structure and properties of matter"
2.
an affair or situation under consideration; a topic.
Explanation:
Hope it helps
A diagram illustrates that grass is eaten by insects, birds, and mice. The insects are eaten by hawks, snakes, and toads. The birds and mice are eaten by foxes, hawks, and snakes. The toad is also eaten by the snake. Which best describes the diagram?
pyramid
food chain grid
food web
trophic level
Answers
Answer:
Food web
Explanation:
food web:
a system of interlocking and interdependent food chains.
Answer:
food web
Explanation:
food web consists of all the food chains in a single ecosystem. Each living thing in an ecosystem is part of multiple food chains.
what is aphids? explain in easy words
Answers
They are little soft bodied insect. They suck the plant's nutritious liquid and if they are in large number, they can kill the plants.
describe how potatoes and eggs might have been digested with the help of enzymes.
Answers
The potato can make you feel at home in any part of the world. According to the International Potato Center, the potato is the third most grown crop in the world, with more than 300 million metric tons produced annually. The United Nations declared 2008 as the International Year of the Potato because of its importance in feeding the poor and hungry. If not deep-fried and loaded with butter or cheese, potatoes have a lot to offer nutritionally, and they are easy to digest as well.
Salivary amylase, an enzyme secreted with the saliva, acts at the long polysaccharide units that make up starch, to shape disaccharides known as maltose. The action of salivary amylase keeps until the potato reaches the belly.
How are eggs digested?The belly empties the chyme containing the damaged egg pieces into the small intestine, where the general public of protein digestion occurs. The pancreas secretes digestive juice that consists of extra enzymes that in addition smash down the protein fragments.
Digestive enzymes play a key position in breaking down the meals you eat. those proteins accelerate chemical reactions that turn vitamins into substances that your digestive tract can take in. Your saliva has digestive enzymes in it. Some of your organs, consisting of your pancreas, gallbladder, and liver, additionally release them.
Learn more about enzymes here: https://brainly.com/question/1596855
#SPJ2
can mercury diffuse in our body using simple diffusion ?
Answers
Answer:
No,mercury can't diffuse in our body using simple diffusion.
Explanation:
It is only slowly absorbed through the skin, although it may cause skin and eye irritation. Elemental mercury droplets may be absorbed through eye contact. Ingestion is not an important route of acute exposure as almost no elemental mercury is absorbed through the gastrointestinal tract.
what does the muscular system do for the stomach
Answers
Answer:
it helps digest the food and push the food down the gut track
Explanation:
Which list of elements is placed in order from most reactive to least reactive?
A. F, O, N, Ne
B. N, O, Ne, F
C. Ne, F, ON
D. N, Ne, O, F
Answers
A is the answer
The two reactive elements that you should remember are Flourine (F) and Francium (Fr), and only F is first for one answer.
Define “mutualism” in your own words. PLEZ DO NOT COPY AND PASTE. I NEED IT ASAP PLEZ
Answers
Define the word Codon
Thank you!
Answers
Explanation:
a sequence of three nucleotides which together form a unit of genetic code in a DNA or RNA molecule.
Answer:
Condon is a city in, and the seat of, Gilliam County, in the U.S. state of Oregon. The population was 682 at the 2010 census. The city, with an historic main street along Oregon Route 19, is a farming and ranching community.
A codon is a sequence of three DNA or RNA nucleotides that corresponds with a specific amino acid or stop signal during protein synthesis. DNA and RNA molecules are written in a language of four nucleotides; meanwhile, the language of proteins includes 20 amino acids.
The second one is most likely to be correct
Hope this helps :> <3
HELP ME HELPP PLZZZ!!!!!
Answers
Which of the following items requires an internal
cooking temperature of 165 °F?
a. Pork chops
b. Injected meats
c. Raw Eggs
d. poultry
Answers
D. Poultry
There are three important temperatures to remember when cooking meat or eggs at home: Eggs and all ground meats must be cooked to 160°F; poultry and fowl to 165°F; and fresh meat steaks, chops and roasts to 145°F.
Answer:
D. poultry
Explanation:
Which scientific claim can be made? Songbirds numbers will increase due to the effects of climate change increasing global Temperatures
Answers
The scientific statement that can be made is that the imbalance in the food chain happened because of this fact, because the songbirds will harm other living beings by their growth.
What is an imbalance in the food chain?Ecological imbalance occurs when some element (animal or plant) of an ecosystem is reduced in
quantityadded or subtracted.This change can give rise to chain reactions and directly affect the functioning of the ecosystem.
With this information, we can conclude that the scientific statement that can be made is that the imbalance in the food chain happened because of this fact, because the songbirds will harm other living beings by their growth.
Learn more about Ecological imbalance in brainly.com/question/21512836
#SPJ1
Ella repeated Mendel's second set of experiments. She crossed two non-pure
tall pea plants and produced eight offspring. All of the offspring were tall. She
concluded that her experiment must be flawed.
What is wrong with Ella's reasoning?
A. Ella did not perform enough trials to evaluate the pattern in the
results.
O B. Ella did her experiment correctly. Mendel's experiments must have
been flawed.
C. Ella should have crossed two pure-breeding tall plants.
O
D. Ella did not accurately measure the height of the plants.
Answers
Answer:
A
Explanation:
Ella did not preform enough trials to evaluate the pattern in the results.
Which of the following explains why DNA testing is used in the lumber industry?
O to locate the strongest trees for harvesting
O to figure out the species of individual trees
O to help find the best trees to use in breeding
O to determine the source countries of tree products
Answers
Answer:
I think it's the second one
Explanation:
It's probably the second one. Some people don't know how to distinguish different types of trees.
Answer:
to avoid illegal lumber, endangered species and forged certificates
100 points!!!!!!
According to the National
Institute of Health, ventricular tachycardia is a fast, regular beating of the ventricles that may last for only a few seconds or for much longer. A few beats of ventricular tachycardia often doesn't cause
problems. However, episodes that last for more than a few seconds can be dangerous. Ventricular tachycardia can turn into other, more serious arrhythmias, such as ventricular fibrillation.
Based on the passage above, how will prolonged ventricular tachycardia affect blood pressure?
O It will increase blood pressure because the ventricles are contracting with more force.
O It will increase blood pressure because the ventricles are filling with more blood between beats.
O It will decrease blood pressure because there is a longer rest period beats of the ventricles.
O It will decrease blood pressure because the ventricles are filling with less blood between beats.
Answers
Answer:
It will decrease blood pressure because the ventricles are filling with less blood between beats.
Explanation:
In ventricular tachycardia, the heart beats faster than normal, usually 100 or ... The chaotic heartbeats prevent the heart chambers from properly filling with blood. As a result, your heart may not be able to pump enough blood to your body
Answer:
It will decrease blood pressure because there is a longer rest period beats of the ventricles.
Explanation:
You can read more about Ventricular Tachycardia here: https://www.pennmedicine.org/for-patients-and-visitors/patient-information/conditions-treated-a-to-z/ventricular-tachycardia
describe five advantages of artificial classification
Answers
Answer:
there it is fella
i guess the hand writing is not that bad
Which process involves glucose reacting with oxygen to produce energy, carbon dioxide, and water?
Answers
Answer:
Respiration...................
Which substance is a heterogeneous mixture?
A. a sugar cube
B. pure olive oil
C. liquid dishwashing soap
D. chicken noodle soup
pls answer asap!
Answers
Hope this helps
This Roman snail, this cuttlefish, and this mussel have similarities and differences in their body structures. What does the information about these structures tell you about the ancestors of these species
Answers
Complete question:
This Roman snail, this cuttlefish, and this mussel have similarities and
differences in their body structures. What does the information about these
structures tell you about the ancestors of these species?
a) None share an ancestor population because different species cannot share an ancestor population. It is a coincidence that these species have some of the same body structures.
b) The Roman snail and the cuttlefish share an ancestor population, but they must not share an ancestor with mussels because mussels have no radula.
c) All three species share an ancestor population, but Roman snails and
cuttlefish share a more recent ancestor population. This is why they share
the radula structure.
d) We cannot make observations of ancestor populations from the past. It is
impossible to explain ancestors with only the information about the body
structures of different species.
Answer:
The correct answer is option C. All three species share an ancestor population, but Roman snails and cuttlefish share a more recent ancestor population. This is why they share the radula structure.
Explanation:
The three species belong to the mollusk phylum, and to the placophore group.
Each of them belongs to a different class.
The Roman snail belongs to the Gasteropod class, The cuttlefish belongs to the Cephalopod class, The mussel belongs to the Bivalve class.The tree classes share a common ancestor from which all the placophores evolved. Among them, we can mention the monoplacophore, gasteropod, cephalopod, bivalve, and scaphopods. Three branches diverged from this common ancestor. The first one originated the monoplacophore. The second one originated the common ancestor of gastropods and cephalopods. And the third one originated the common ancestor of bivalves and scaphopods. The tree-mentioned species inherited the mantle and the radula from their foreign common ancestor. But later in time, individuals that originated bivalves lost the radulla. This is why the three species have a mantle, but only gastropods and cephalopods have a radula. When each of these classes evolved, they developed their own traits,
Gastropods → muscular foot used for moving Cephalopods → pallial cavity for swimmingBivalves → byssal threads to attach to the rocksYou will find an image in the attached files that will help you understand this explanation.
when people suffer from chicken box they shed skin when the Pox dries it is recommended by the daughters that the skin shade by the patient should be burnt away and not be directly test why do you think this precaution is mandatory
Answers
Answer:
because the precaution is skin shade by the patient should be burned away and not be directly test
Answer:
People suffering from chickenpox should not be in sunlight because the skin is more susceptible to heatstroke. The virus stays for a long time in the body, even after the symptoms are gone. Hence, it is recommended to burn it.
Explanation:
Hope this helps... pls vote as brainliest
In the overall equation for photosynthesis, six molecules of carbon dioxide and six
molecules of water result in a molecule of sugar and six molecules of
Answers
Answer:
Oxygen
Explanation:
Formula for photosynthesis- 6CO2 + 6H2O → C6H12O6 + 6O2
right answer got it right on edg 2021
Answers
Answer:
The answers is corresponding
Explanation:
Nice have a nice day
Answer:
I agree
Explanation:
yes
Help will mark brainliest #6,7,8
Answers
Answer:
search it up, but 6 is b
Explanation:
Can someone please help me with these two:
1. Blood is at it's highest pressure just when it leaves the heart. Why do you think so?
2. The blood in an artery flows faster and at higher pressure than blood in veins. Why so?
Answers
Answer:
1.Blood pressure can be defined as the pressure of blood on the walls of the arteries as it circulates through the body. Blood pressure is highest as its leaves the heart through the aorta and gradually decreases as it enters smaller and smaller blood vessels (arteries, arterioles, and capillaries).
2. The more rounded the lumen, the less surface area the blood encounters, and the less resistance the vessel offers. Vasoconstriction increases pressure within a vein as it does in an artery, but in veins, the increased pressure increases flow.
