Answer:
a.
Explanation:
The slight positive charges on the hydrogen atoms in a water molecule attract the slight negative charges on the oxygen atoms of other water molecules. This tiny force of attraction is called a hydrogen bond.
Answer:
d
Explanation:
Metal are malleable and ductile. Explain on the basis of the electron sea level?
Metallic Bonding is restricted to metals only. In the metallic bonding, There is a electrostatic force of atrraction between the metal ions (which are positive)
and the electrons(which are negative).
The metal ions are arranged in a lattice pattern which is the regular repetitive structure.
_____________________________________Electron Sea Level:Every metal atom donate one or two valence electrons, so due to the BULK presence of the electrons, It results in a formation of sea of electrons. So the valence electrons don't just stay on their own atom, they roam around the whole metal. They are just like a sea of electrons. This is why it is called the electron sea model. basically metal ions are present as a iceberg or island in the freely floating sea of electrons.
_____________________________________How is Sea of electron related to the malleable and ductile property?The sea of electron works as a electron GLUE, That means the metal ions are strongly ATTRACTED to the electron, so When apply pressure on the metals they DONT BREAK that means they are not brittle but malleable and ductile. This is because of the moving electrons and because the cations slide easily past each other, The ability of the atoms to roll over each other into new positions without breaking the metallic bond is because of the electron glue.
_____________________________________IMPORTANT STATEMENTSBrittle; Hard but breakable due to absence of sea of electron.
Malleable and Ductile; Transformed into sheets and thin wires so they are somewhat ELASTIC.
Can someone help me with this please?
Answer:
i think second
Explanation:
What is the process by which cells release energy in the absence of
oxygen? -
possible answers :
aerobic
anaerobic
calorie
cellular respiration
fermentation
glycolysis
Krebs cycle
matrix
NAD+
Answer:
This process is called aerobic respiration because it requires air (oxygen). In the absence of oxygen, the cell uses a process called anaerobic fermentation. or simply fermentation. ... Because aerobic respiration breaks the sugar all the way down, it releases much more energy than fermentation.
Why does a submarine rise when its volume is increased? a. Because it now weighs less c. Because it fills with air b. Because its density is now lower than the water around it d. Because it is less buoyant when it is larger Please select the best answer from the choices provided A B C D
Answer:
A
Explanation:
A
why does boiled yeast not ferment?
Answer:
they cant get enough heat to boil
Explanation:
Answer:
Possibly because of lack of air to activate the yeast? Or not enough heat, maybe?
Explanation:
If this is not correct, please, let me know, as I will be happy to correct it! :)
Why do organisms breathe?
pls pls pls pls pls pls pls pls pls pls pls pls pls pls pls pls
Answer:
B
Explanation:
Uracil replaces thymine so when you translate it you put each bases pair so for RNA uracil would replace adenine and guanine would replace cytosine.
Answer:
bbbbbbbbbbbbbbb
Explanation:
b
b
b
b
b
b
Why is it more common for birds to have nests with a few eggs rather than just one or a lot?
Explanation:
The large size of a egg makes it difficult for the female to retain more than a single one egg at a time - carrying eggs would make flying harder and require more energy. (Bird eggs vary in size from the tiny 0.2 gramme eggs of hummingbirds to the enormous 9 kilogram eggs of the extinct elephant bird.)
Just as an aircraft cannot fly if it is overweight, all female birds must dispense with the fertile egg as soon as it is formed. And because the egg is such a protein-rich high-nuitrition prize to all sorts of predators, birds must find a secure place to hatch their eggs. Although birds' eggs appear to be fragile, they are in fact extremely robust. The oval shape applies the same rules of engineering as an arched bridge; the convex surface can withstand considerable pressure without breaking. This is essential if the egg is not to crack under the weight of the sitting bird. It takes 26 pounds of pressure to break a swan's egg and 120 pounds to smash the egg of an ostrich.
Female birds have one working ovary, unlike mammals, which have two. Ovaries are the organs where eggs are produced. A bird's ovary looks like a tiny bunch of different-sized grapes.
please help 50 points (real answers please) questions in the picture
Answer:
plasma membrane
other nonpolar molecules
Explanation:
how dose each level of organization in your body help make life possible?
One challenge to understanding earth is
Answer:
I'm confused, what's the question here.
Explanation:
how does the action og wind affect a rock appearance
The diagram illustrates the water cycle.
Parts of the water cycle labeled U through Z. U: Water moving from a lake into the clouds. V: Clouds. W: Water falling from clouds as rain and snow. X: Water moving from ground to the clouds. Y: Water flowing down the mountainside into a lake. Z: Underground water going into lake.
Which letter represents runoff?
U
W
X
Y
Answer:
The answer is Y
Explanation:
Just took the test
Answer:
Y is your answer
Explanation:
How does the information from the stimuli get communicated to the brain?
Answer:
Explanation:
Sensory receptor interact with stimuli, such as light sound temperature and pain which is transformed into the code that is carried to the brain by the chain of neurons. Once the signal reaches the end of an axon, which is at the end of neuron, a neurotransmitter is released and the process repeats.
The information is sent in the form of nerve impulses and reaches the spinal cord through the sensory neurons of the PNS.
How does a lion get its source of nitrogen to form its DNA or proteins?
Answer: The protein in their diets
Explanation:
The lion gets its source of nitrogen to form protein in its diet.
What is protein?Proteins are macronutrients that are present in foods. There are two types of proteins. Essential and nonessential. Non-essential proteins are synthesized in the body and essential proteins are needed to eat by taking food.
A lion is an animal, and animals synthesize some proteins in their body, and some proteins are to be taken from the food. Protein is necessary for the growth of the body. It gives strength to the body.
The protein synthesis is done in the cell of the animals. But the nitrogen, that the animals get is from the diet they eat which is meat and plants. It depended upon its diet. Some animals are carnivorous and some are herbivorous.
Therefore, the lions get their protein from their diet.
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Why is it logical for the level of FSH to fall greatly following ovulation?
Answer:
During each menstrual cycle, there is a rise in follicle stimulating hormone (fsh) in the first half of the cycle that stimulates follicular growth in the ovary. After ovulation the ruptured follicle forms a corpus luteum that produces high levels of progesterone. This inhibits the release of fsh!
PLEASE HELP MEEEE!!
How does the ozone layer affect life on Earth? (Site 1)
Answer:
It affects life on Earth by causing the heat rays of the sun weaker.
Explanation:
The ozone layer acts as a shield for life on Earth. The stratospheric ozone layer absorbs ultraviolet (UV) radiation, preventing dangerous UV rays from hitting Earth's surface and harming living organisms.
John and Pat are identical twins with identical DNA. John works in a movie theater, and Pat works as a lifeguard. They have very different skin pigmentation. Which is the best explanation of the difference? Skin color, a polygenic trait, is also determined by environmental factors. Skin color, a polygenic trait, is also determined by the sex of the individual. Skin color, a trait that demonstrates incomplete dominance, is also determined by environmental factors. Skin color, a trait that demonstrates incomplete dominance, is also determined by the sex of the individual.
Answer:
A. Skin color, a polygenetic trait, is also determined by environmental factors.
Explanation:
When you are a lifegaurd you are outside much more which means you are very likely to get a tan; Therefore changing the pigment of Pat's skin.
I hope this helps you :) Have a nice day!
The study of genes and inheritance is called genetics. In a gene pair, one allele is dominant and the other is recessive.
The correct answer is the variation in gene combination.
What is polygenic inheritance?A character that is controlled by more than one pair of alleles is called polygenic inheritance. The best example is skin pigmentation which is controlled by 6 alleles or 3 gene pairs.According to the question, pigmentation is different due to the combination of the different genes. These genes produced melatonin which decides the skin tone, The dominant genes code for a darker tone, and the recessive gene code for a lighter tone.
Hence, the correct answer is mentioned above.
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BLANK is the process of cutting DNA into fragments and inserting the fragments with a
desired
BLANK into another organism of the same or different species.
Answer:
Genetic engineering
is the process of cutting DNA into fragments and inserting the fragments with a desired trait into another organism of the same or different species.
Genetic engineering is also known as
✔ recombinant DNA technology
.
Explanation:
So the answers are
Genetic engineering
Trait
Recombinant DNA technology.
20. Minerals are identified by their
All cells contain cell membranes. Which of the following describes the composition of cell membranes?
2 points
Cell membranes are composed of carbohydrate chains, which allow all materials to enter and leave the cell.
Cell membranes are composed of cellulose, which provide rigidity for the cell.
Cell membranes are composed of cytoplasm, which allows proteins to be excreted by the cell.
Cell membranes are composed of lipid molecules, which provide a flexible structure.
Answer:
D
Explanation:
Why do you think surface waves are the slowest moving waves?
Answer:
S waves are more dangerous than P waves because they have greater amplitude and produce vertical and horizontal motion of the ground surface. The slowest waves, surface waves, arrive last. They travel only along the surface of the Earth.
Explanation:
Answer:
They move a little more slowly than P waves, and can only pass through solids. As S waves move, they displace rock particles outward, pushing them perpendicular to the path of the waves. ... Surface waves are the slowest moving of all waves, which means they arrive the last
Explanation:
What is the complimentary dna strand for AGT CGA CCT TTA CGA GGC ACT
Why is mitosis important to unicellular organisms?
I need help with this. Answer the punnet square and then answer the questions next to it. Please!
Answer:punnet square one :)
Explanation:
Bb. Bb
Bb. Bb
6. Whether a molecule can cross the plasma membrane depends upon
A. the size of the molecule
B. the chemical properties of the molecule
C. the charge of the molecule
D. All of the above
Whether a molecule can cross the plasma membrane depends upon D. All of the above
Which molecule can pass the plasma membrane?
Small nonpolar molecules, consisting of O2 and CO2, are soluble in the lipid bilayer and consequently can effectively cross cell membranes. Small uncharged polar molecules, which include H2O, can also diffuse thru membranes, however large uncharged polar molecules, inclusive of glucose, cannot.
How do molecules pass across the plasma membrane?Explanation: Molecules pass throughout the plasma/mobile membrane through diffusion. If they're not small sufficient, they need to break down by means of other substances, which include enzymes, which can be biological catalysts. If they are small enough, usually, the easiest way for them to move is through diffusion.
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1. What kind of erosion has helped paleontologists and geologists study the rock layers in the Badlands National Park?
A. The mechanical forces of wind, water and freezing wore away the layers of rock.
B. Chemical erosion causing hydration causing rocks to break up and ways away.
C. A combination of chemical and biological erosion wore away layers of rock.
D. Biological weathering from lichen and bacteria colonies ate away at the rock layers.
Answer:
A
Explanation:
In Badlands National Park, rain, wind, and frost have carved steep canyons, sharp ridges, gullies, spires, and knobs out of the Dakota prairie, providing a glimpse into the pace of geologic change.
which is common to both photosynthesis and respiration
What kind of allele results in the trait indicated by the green color being expressed in
the individuals shown here?
Answer:
dominant
Explanation:
because the dominant is present as it's phenotype
Why does the east coast of South America not have mountains volcanoes and earthquakes?
The east coast of South America does not have mountains volcanoes and earthquakes because of the conventional geologic story.
Reason of east coast of South America not involved mountain:The conventional geologic story renders the East Coast of North America which we called as the passive margin.
It is an area free of volcanoes and earthquakes because of its position that lies within the fractured plates which could be comprise of the surface of the globe.
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