Answer:
One of water’s important properties is that it is composed of polar molecules. The two hydrogen atoms and one oxygen atom within water molecules (H2O) form polar covalent bonds. While there is no net charge to a water molecule, the polarity of water creates a slightly positive charge on hydrogen and a slightly negative charge on oxygen, contributing to water’s properties of attraction. Water’s charges are generated because oxygen is more electronegative, or electron loving, than hydrogen. Thus, it is more likely that a shared electron would be found near the oxygen nucleus than the hydrogen nucleus. Since water is a nonlinear, or bent, molecule, the difference in electronegativities between the oxygen and hydrogen atoms generates the partial negative charge near the oxygen and partial positive charges near both hydrogens.
Explanation:
As a result of water’s polarity, each water molecule attracts other water molecules because of the opposite charges between them, forming hydrogen bonds. Water also attracts, or is attracted to, other polar molecules and ions, including many biomolecules, such as sugars, nucleic acids, and some amino acids. A polar substance that interacts readily with or dissolves in water is referred to as hydrophilic (hydro- = “water”; -philic = “loving”). In contrast, nonpolar molecules, such as oils and fats, do not interact well with water, as shown in. These molecules separate from it rather than dissolve in it, as we see in salad dressings containing oil and vinegar (an acidic water solution). These nonpolar compounds are called hydrophobic (hydro- = “water”; -phobic = “fearing”).
The properties of water help Earth support life helps in various ways. Most of the role of the water in supporting life is because of its molecular structure which causes its specific properties.
Water is a simple molecule made of two small, positively charged hydrogen atoms and one large negatively charged oxygen atom.
Polar molecule: The charge difference between the positive charge on one side and the negative charge on the other side form an asymmetrical molecule called a polar molecule that interacts with different molecules. Hydrogen bonding: Due to hydrogen bonding water has various life-supporting properties by the interaction of various molecules. Cohesion: water molecules attract other water molecules in a property called cohesion that plants take up water at their roots and it affects boiling point regulates body temperature of animals. Adhesion: Attraction to other molecules called adhesion that helps in binding with different types of molecules Surface Tension: surface tension of water is similar to the cohesion Temperature Moderation: water's heat capacity or specific heat prevent immediate temperature changes Low density of Ice: helps ice to flow on water not to immerse. Therefore life under the ice can be maintained. Universal solvent: makes water dissolve with other molecules and make a life-sustaining force that helps cells transport and use substances like oxygen or nutrientsThus, water is essential for supporting life and survival.
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28. The phases for Meiosis II are:
All members of a species that live in the same area at the same time make up alan)
Which of the following statements tells how facilitated diffusion differs from
simple diffusion?
A. Particles move through cell membranes without the use of energy by cells.
B. Particles tend to move from high concentration to lower concentration.
C. Particles move within channel proteins that pass through cell membranes.
D. Particles tend to move more slowly than they would be expected to move.
Answer:
I think its C but I am not sure, I hope this helps :)
Explanation:
The statement 'particles move within channel proteins that pass through cell membranes' indicates the reason for which facilitated diffusion differs from simple diffusion (Option C).
Diffusion (both facilitated diffusion and simple diffusion) refers to the movement of substances across biological membranes from an area of high concentration to an area of low concentration.
Facilitated diffusion and simple diffusion are two types of passive transport that do not require energy to move molecules/ions in favor of a concentration gradient.
In facilitated diffusion, specific membrane proteins known as carriers or channels help to the movement of substances in favor of a concentration gradient.
Conversely, in simple diffusion, small molecules (e.g. CO2 and oxygen) freely diffuse across a selectively permeable membrane in favor of a concentration gradient.
In conclusion, the statement 'particles move within channel proteins that pass through cell membranes' indicates the reason for which facilitated diffusion differs from simple diffusion (Option C).
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(50 points)The picture is a cross section of a bone.
A cross sectional view of bone. X points to the inner layer. Y points to the middle layer.
Which structures of the bone are indicated by the arrows?
A. X-compact; Y-spongy
B. X-spongy; Y-marrow
C. X-spongy; Y-compact
D. X-marrow; Y-spongy
Answer:
it is b X-spongy; Y-marrow, i am doing the test, and the other person is correct.
Explanation:
The arrows point to the bone formations called X-marrow and Y-spongy. So, the correct option is D.
What are Compact and spongy bones?Osteons or haversian systems are tightly packed together to form compact bone. The osteon is made up of concentric circles (lamellae) of matrix surrounding a central canal known as the osteonic (haversian) canal. The bone cells (osteocytes), which are situated between both the rings of matrix, are found in regions known as lacunae.
The bone marrow stores fat and produces blood cells. Spongy bone, also known as cancellous bone, is composed of tiny, needle-like bone fragments organized in a honeycomb pattern. Bones that are more flexible can still be strong while weighing less. In the given example, the arrows indicate to a X-marrow and Y-spongy bone structures.
Therefore, the correct option is D.
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main parts of the male reproductive organ and their functions.....
Answer:
penis
Explanation:
sex
Cellular respiration and photosynthesis form the basis of the __________.
Group of answer choices
A) water cycle
B) biomass
C) nitrogen cycle
D) carbon cycle
In which calluses did the new gene insert an existing corn gene?
Answer:
Many farmers use chemical herbicides to kill weeds and
insecticides to kill insects. Using genetic engineering, scientists
have developed ways to resist harmful crop pests. In this Gizmo,
you will use genetic engineering techniques to create genetically
modified corn.
Explanation:
Many farmers use chemical herbicides to kill weeds and
insecticides to kill insects. Using genetic engineering, scientists
have developed ways to resist harmful crop pests. In this Gizmo,
you will use genetic engineering techniques to create genetically
modified corn.
What is the difference between glucose and ATP?
Glucose is a storable form of energy, while ATP is a usable form of energy.
ATP is a storable form of energy, while glucose is a usable form of energy.
ATP is only a usable form of energy, but glucose can be used and stored.
Glucose is only a storable form of energy, but ATP can be used and stored.
The main difference between glucose and ATP is that Glucose is a storable form of energy, while ATP is a usable form of energy.
Glucose is storable form of energy because it can't be used as energy until it can be broken down by mitochondria of the cell while on the other hand, ATP is the usable form of energy which we can get from the break down of glucose molecules. Our cells use ATP as a fuel to do various activities of the cell so we can conclude that in glucose, energy is present in stored form whereas ATP is used as energy in various activities.
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BRAINLYIST PLSSSS HURRY
Answer:
A
Explanation:
only one type of atom= (PURE SUBSTANCE not mixture)
is atom chemically bonded to another atom? (NO- element, not compound)
Answer:. Maybe A. Im not sure.
How many moles are in 15 grams of Lithium?
2.16 grams
104.1 moles
2.16 moles
104.1 grams
What shape represents the phosphate in a nucleotide?
Answer:
Each nucleotide is made up of a nitrogenous base, a pentose sugar, and a phosphate. The remainder of the molecule forms the pentose sugar.
Explanation:
9) List these biomes in order from the greatest to least diversity (temperate
deciduous forest, tropical rain forest, temperate rain forest).
Tropical rainforest, temperate deciduous forest, temperate rainforest
I'm not too sure if the temperate forest is more diverse than the rainforest, so sorry if I'm wrong. Tropical rainforests are the most diverse because of the humidity, which is water. The water helps the soil stay healthy, which makes more plants, which makes more animals and insects.
I hope this helps! Good luck!
The biomes in order from the greatest to least diversity will be tropical rainforest, temperate deciduous forest, and temperate rainforest.
Tropical rainforests refer to the rainforests that occur in areas that have no dry season.
The temperate deciduous forest refers to a biome that always changes. It has seasons such as winter, spring, summer, and fall.
Temperate rainforest refers to the broadleaf or coniferous forests that receive heavy rain. This condition supports ferns, shrubs, etc.
It should be noted that the biome with the greatest diversity is tropical rainforest while the least is the temperate rainforest.
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How do animals transport materials?
Answer:
Thought the process of discussion and ossmossis as due to gaseous exchange
Explanation:
With the aid of thin layers and large surface area animal are able to transport material thought the blood due to diffusion and osmosis In order to transport different materials from a every of high concentration to a low concentration until material is equally distributed throughout the body
In the mall, a jeweler offers to sell you a diamond ring for fifty bucks. How could you test if the rock in the
ring is a real diamond?
Answer:
By dropping it in a volcano and pick it back up
Explanation:
Answer:
U gotta have a tester. DUH.
Which process uses proteins to move molecules against a concentration gradient?
A. Passive Transport
B. Active Transport
C. Hypotonic
D. Endocytosis
pyruvic acid enters the ____ and is first converted into _____.
a. krebs cycle; citric acid
b. krebs cycle; acetyl CoA
c. mitochondria; citric acid
d. mitochondria; acetyl CoA
Answer :
D. Mitochondria ; acetyl CoA
pyruvic acid enters the mitochondria and is first converted into acetyl CoA
Describe the following types of cell signaling:
Autocrine:
Juxtacrine:
Endocrine:
Paracrine:
Answer:
Autocrine:Autocrine signaling means the production and secretion of an extracellular mediator by a cell followed by the binding of that mediator to receptors on the same cell to initiate signal transduction. A well-characterized form of autocrine signaling is the secretion of IL-1 by macrophages.
Juxtacrine:In biology, juxtacrine signalling (or contact-dependent signalling) is a type of cell–cell or cell–extracellular matrix signalling in multicellular organisms that requires close contact. ... A membrane ligand (protein, oligosaccharide, lipid) and a membrane protein of two adjacent cells interact.
Endocrine:The endocrine system is the collection of glands that produce hormones that regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things.
Paracrine:Paracrine signaling is a form of cell signaling or cell-to-cell communication in which a cell produces a signal to induce changes in nearby cells, altering the behaviour of those cells. ... However, the exact distance that paracrine factors can travel is not certain.
Explanation:
Hope this helps you
Crown me as brainliest:)
The deer tick attaches to a warm-blooded animal and feeds on its blood.
Ticks need blood at every stage of their life cycle. They also carry Lyme
disease, an illness that can cause joint damage, heart complications, and
kidney problems What type of relationship is this?
Mutualism
Commensalism
Predator Prey
Parasitism
Parasitism. Ticks are complete parasites with no regard for the well being of their carriers.
HURRY PLEASE HELP I REALLY NEED THE ANSWERS Briefly describe the three layers
of the mantle. Include
temperatures.
•Lithosphere:
•Asthenosphere:
•Mesosphere:
Answer:
lithosphere
Explanation:
is up of brittle crust and the top part of upper mantel and also the coolest and most rigid part of the earth
Answer:
Lithosphere:
The lithosphere is the rigid outermost layer of the earth known as the mantle and the crust. And it is defined by its rigid mechanical properties.
Asthenosphere:
This layer is highly viscous and is very mechanically weak and is located below the Lithosphere it is also known as the ductile region of the upper mantle.
Mesosphere:
The mesosphere is the third layer of the atmosphere, directly above the stratosphere and directly below the thermosphere. In the mesosphere, temperature decreases as altitude increases.
Stomach acid has a pH of about _____. a. 4 c. 6 b. 2 d. 10
sex linked traits are typically carried on the x chromosome. to denote the geontypes, a superscript is used. a female carrier of hemophillia will have the genotype xH Xh . using the letters X AND Y , what is the genotype for each of the following people?
Answer: XHY, XHXh
Explanation: I don't know if this is correct exactly but i just looked at my notes from my bio class because we did this previously so i think it's right
What is difference between acid and bases?
Definition. A substance, mostly liquid that donates a proton or accepts an electron pair in reactions. An acid increases the concentration of H+ ions. A base is a substance that releases hydroxide (OH-) ions in aqueous solution, donates electrons and accepts protons.
(just if someone needs this i guess)
Answer:
Acids are sour, gives burning sensation, generally sticky, reacts with metals to produce hydrogen gas. Although bases are opposite as they are bitter, generally odorless (except ammonia), they are slippery; bases react with fats and oils. In phenolphthalein, indicator acids remain colorless, and base gives pink color.
Explanation:
An acid is a substance that releases hydrogen ions into an aqueous solution. A base is a substance that releases hydroxide ions.
Acids are sour, gives burning sensation, generally sticky, reacts with metals to produce hydrogen gas. Although bases are opposite as they are bitter, generally odorless (except ammonia), they are slippery; bases react with fats and oils. In phenolphthalein, indicator acids remain colorless, and base gives pink color.
Kevin is constructing an explanation of the importance of freshwater ecosystems. Which of these statements would be MOST USEFUL to include in the explanation?
What organisms carry out metabolism?
Answer:
Eukaryotes
Explanation:
Are organisms wise cells have a nucleus and membrane bound organelles. Prokaryotes are organisms whose cells lack a nucleus. Eukaryotes carry out cellular respiration with the help of mitochondria. Mitochondria are organelles that produce the enzymes necessary to catalyze the series of reactions that produce ATP.
HELP FAST HELP ASAP
Which is a renewable resource?
which one of these is it
petroleum
wood
iron
coal
will get awarded with brainliest
Answer:
I think petroleum
but I am not sure
Answer:
Wood
Explanation:
Wood comes from trees. Because trees can be grown, they are renewable.
You get a cut on your finger and some bacteria enter. Your immune system cells kill off the invaders by ingesting them. This is an example of:
A strand of DNA contains the bases adenine, cytosine, cytosine, and guanine, in that order. Which would be the order of the bases on the opposite strand of DNA?
cytosine, adenine, adenine, and thymine
cytosine, thymine, thymine, and adenine
thymine, guanine, guanine, and cytosine
thymine, adenine, adenine, and cytosine
Answer:
thymine, guanine, guanine, and cytosine
Explanation:
The order of the bases on the opposite strand of DNA should be Thymine, Guanine, Guanine and Cytosine.
DNA and complementary base pairingThe deoxyribonucleic acid (DNA) is a double helix composed of two long chains of sequential nucleotides.
In DNA there are four classes of nucleotides, each containing one different nitrogenous base (i.e., Adenine, Guanine, Cytosine, Thymine).According to the base pair rules of complementarity, Adenine always pairs with Thymine, whereas Guanine always pairs with Cytosine.In conclusion, the order of the bases on the opposite strand of DNA should be Thymine, Guanine, Guanine and Cytosine.
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help I have 10 minutes this is a huge gradeeeeeee
Answer:
1. Volume
2. Mass
3. Units? Metric System? I'm not sure about this one
4. Liters
5. Kilograms
6. Meters, but I'm pretty sure its the whole metric system
Explanation:
I have to go back and look at questions 3 and 6.
Hope I helped :)
Evidence that a meteor passed through to the surface of a moon or planet would be
A) a fiery streak in the sky
B.) impact crater
C.) meteorite pieces found on planet's surface
D.) both b and c
Answer:
D
Explanation:
Some plant roots grow with mycorrhizal fungi. The fungi absorb water and
minerals and pass them on to the plant and receive carbohydrates from the
plant. This is an example of:
- mutualism
- competition
- predation
- parasitism
Answer:
-mutualism
Explanation:
Hope it helps hehe