Answer:
An atom is composed of two regions: the nucleus, which is in the center of the atom and contains protons and neutrons, and the outer region of the atom, which holds its electrons in orbit around the nucleus.
The space surrounding the nucleus of an atom contains electrons.
Negatively charged electrons are subatomic particles that orbit the nucleus of an atom at a particular energy level, or electron shell. Compared to the other particles inside the nucleus, protons and neutrons, they are very light and small. Despite having much less mass than protons and neutrons, electrons play an important role in determining the general behavior and characteristics of atoms.
The configuration of electrons in an atom's electron shell determines its chemical structure and reactivity. Depending on how far they are from the nucleus, electrons reside in different energy levels, with the maximum number of electrons allowed in each level.
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which of these provided information about animal adaptations to climate change?
a. fossils
b. ice cores
c. tree rings
d. sea-floor sediment
Answer: floor
Explanation:
Fossils are structures which provided information about animal adaptations
to climate change.
Fossils refers to remains of living organisms which have been replaced in the form of rock particles due to its presence in the soil for a long period of time.
The fossils contain an understanding of the structures and characteristics
the animals had which is then compared to its present structures. This helps
to explain how the animals adapted to climate change through changes in
the structure, shape of parts of the body.
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Explain enzyme-substrate specificity.
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substrate specificity. The active site of an enzyme is very specific to its substrates as it has a very precise shape. This results in enzymes being able to catalyze only certain reactions as only a small number of substrates fit in the active site. This is called enzyme-substrate specificity.
Answer:substrate specificity. The active site of an enzyme is very specific to its substrates as it has a very precise shape. This results in enzymes being able to catalyze only certain reactions as only a small number of substrates fit in the active site. This is called enzyme-substrate specificity.
Explanation:Enzymes and substrates share specificity in that an enzyme will only react with a specific substrate • This is because the active site is complementary in both shape and charge to a given substrate • The model by which this is known is ‘lock and key’ as the substrate is a precise structural fit for the enzyme, much like a lock and key • When the enzyme and substrate bind, they form an enzyme-substrate complex, before the substrate is catalytically converted into a product
In which direction is the wind likely to blow in the picture?
WATER
LAND
A. From the ocean to the land
B. From the sun to the land
O O O O
C. From the land to the ocean
D. From the land to the sun
Answer:
From the ocean to the land. just took the quiz.
Explanation: a p e x
During the day, the air above land in coastal regions warms up more quickly and starts to rise, hence option A is correct.
What is the direction of the wind?As the warm air rises, a low-pressure region develops on the surface, enabling air from the sea to enter. As a result, the wind blows from the sea to the land during the day.
Predominant winds often blow east-west rather than north-south, especially in the afternoon when the land is being heated by the sun to its maximum.
the Coriolis effect causes wind systems to twist counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere most frequently in the spring and summer.
Therefore, because of the greater temperature differences between the ocean and nearby land, hence option A is correct.
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What is the role of the nucleus in plant and animal cells?
O
A. It stores the genetic information for the cell.
B. It serves as a boundary for the cell.
o
C. It produces energy for the cell.
O
D. It stores waste for the cell.
Answer:
Explanation:
It’s A I’m pretty sure
Give an example of exaptation in humans.
Answer:
As an example of an exaptation, Gould (1991) used the large size of the human brain and its function of enabling humans to produce speech. The large brain size, according to his argument, originally arose as an adaptation for some (unspecified) functions in humans' ancestral past ( Gould, 1991 ).
Explanation:
help me please its due in a hour
Answer:
The correct answer is - in the sickle-cell hemoglobin is the replacement of glutamic acid with valine in the β-globin amino acid chain.
Explanation:
Sickle cell anemia has a mutant gene in which that produces has valine amino acid instead of glutamate in the hemoglobin protein. In the given question the structure of the protein has only one difference that is the replacement of the glutamic acid in normal hemoglobin to valine in the β-globin amino acid chain in the mutant protein.
Valine 6 (beta chain) binds to a different hydrophobic patch (on the alpha chain and causes the disease in sickle cell anemia cases.
what’s the chemical reaction for the digestion of fats.
Answer: The chemical reaction for the digestion of fats is when A triester is produced through the chemical reaction of three fatty acid molecules with glycerol, a molecule that contains three hydroxyl groups. When fats are broken down these fatty acid chains and glycerol are free for the body to use.
Explanation:
Lipids (fats and oils)
Lipase enzymes break down fat into fatty acids and glycerol. Digestion of fat in the small intestine is helped by bile, made in the liver. Bile breaks the fat into small droplets that are easier for the lipase enzymes to work on. Bile is not an enzyme.
Akshay decides one day to run a marathon without any training. After 10 minutes your lapsed and akashay, has run half a mile, he begins to get cramps in his thigh he's also breathing very rapidly what is causing the cramps on his legs?
Answer:
Lactic acid accumulation in the leg muscles
Explanation:
Muscle cramps are painful feelings caused by sudden contractions of the muscle. Cramps are caused by several reasons, however, based on the description of Akashay's activity, it is caused by ACCUMULATION OF LACTIC ACID in the leg muscles due to strenuous exercise.
According to this question, Akashay decided to run a marathon without any prior training. However, he started to get cramps on his thigh coupled with rapid breathing. There is a lack of oxygen in his cells, hence, anaerobic respiration was used leading to the formation of lactic acid. The buildup of lactic acid is what causes the painful sensation called CRAMP.
Please help!!
When purchasing an electrical device, what are the two financial costs you need to consider? Are there any environmental considerations you would make? Explain your reasoning.
Answer:
Initial price and operating cost
 The tool that measures air pressure is called what?
Answer: A barometer !
Explanation:
Hoped this helped ! :)
Describe how an organism's genotypes codes for their phenotype. In your answer use the vocabulary terms: Phenotype, genotype, DNA, mRNA and protein. Please dont answer if you dont know it.
Answer:
The organism's genotype encodes their phenotype because the genotype corresponds to the characteristic that is determined by genes —formed by fragments of DNA— which are transcribed into mRNA to be translated into amino acid sequences in the synthesis of proteins, determining the morphological and functional characteristics of an organism, that is, its phenotype.
Explanation:
Genotype corresponds to the genetic information contained in the DNA, according to the sequence of nucleotides in its molecular structure. This genotype includes characteristics or polymorphisms that define the appearance and function of living beings.
Each DNA molecule constitutes a chromosome, formed by genes —DNA fragments— each of which determines specific characteristics.
When DNA is transcribed into mRNA, information is being sent that is necessary for the incorporation of amino acids into a protein that is being synthesized. The proteins, in turn, determine morphological and functional characteristics that constitute the phenotype of an individual.
The cohesion-tension theory proposes that the physical properties of water allow the rise of water through a plant. Sketch and describe cohesion and adhesion of water molecules. Don't do the sketch part only do just the description part.
Answer:
Cohesion: the attraction force between the same type of molecules.
Adhesion: the attraction force between different types of molecules.
What two components are often found as part of
an enzyme?
Answer:
The two components which are often found as part of an enzyme are Active site and protein. Proteins are referred to as macromolecules or macromolecules which consists of more or one of a chain of amino acid residue. They do perform an array of functions which are within organisms.
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what are the briefly information about plant cell
Answer:
Plant cells are the basic unit of life in organisms of the kingdom Plantae. They are eukaryotic cells, which have a true nucleus along with specialized structures called organelles that carry out different functions. Plant cells have special organelles called chloroplasts, which create sugars via photosynthesis.
Question 3 (2 points) According to Newton's 2nd Law, Force equals mass times acceleration. Sidney Crosby has a mass of 91kg and Claude Giroux has a mass of 85kg. If they both are accelerating at 20m/s2, which person will have the greater force when they collide? A.Sidney Crosby
B.Claude Giroux
C.They both will have the same force
D.Not enough information is given.
Answer:Sidney Crosby
Explanation:
List down 5 evidence of exogenic processes and show how it affects or how it is affected by human activities.
Answer:
Mass wasting has drastic effects on human and animals life in the form of landsliding , earthquakes . Deposition is the pres in which sediments , rocks and soil are added land mass . A positive effect of deposition is that it creates new land . And negative effect is it takes away new lands .
The five (5) evidence of exogenic processes on Earth's surface include the following:
1. Weathering.
2. Stripping.
3. Erosion.
4. Mass wasting.
5. Deposition.
Exogenic processes can be defined as the processes that occur at or near the surface of planet Earth due to the action (influence) of exogenic forces or geomorphic agents.
The five (5) evidence of exogenic processes on Earth's surface include the following:
1. Weathering: the removal of various minerals from rocks causes depletion in oil and gas reserves that may be available for human consumption.
2. Stripping: it involves the removal of essential chemical elements and components from precious stones and landform such as a mountain.
3. Erosion: this causes flooding and washing away of various soil nutrients and as such affects agriculture.
4. Mass wasting: it moves rock debris, soil nutrients, and regolith downward, which are substances that are useful for certain human activities such as during mining.
5. Deposition: it is a consequence of erosion and it result in the laying down of sediment on a landform or landmass.
This sometimes make the foundation of buildings stronger to withstand stress.
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The primary source of energy in most ecosystems is/are
Answer:
The Sun.
Explanation:
Energy reaches the Earth in the form of electromagnetic radiation.
Terrestrial solar radiation means solar radiation that reaches the Earth after passing through the Earth's atmosphere. About 97% of solar radiation reaches the Earth in the range of wavelengths 0.29 - 2.5 μm, and about 3% with wavelengths greater than 2.5 μm.
Name 2 ways that the Theory of evolution is currently being used to improve the quality of human life
Answer:
The answer to the question: Name two ways that the Theory of Evolution is currently being used to improve the quality of human life, would be: Through the development of evolutionary biology, and 2. Through the comprehension of how the systems of disease, and health, work.
Answer:
Through the development of evolutionary biology.And Through the comprehension of how the systems of disease, and health, work.
In the 1520s, the Spanish explorer Cortes and his armies carried the virus that causes smallpox to NorthAmerica and South America.
The graphs above illustrate the death rate among both Europeans and American Indians from smallpox at that time. Which of the following statements best explains the difference in death rates?
F. People in Europe were healthier than American Indians.
G. Antibiotics were available in Europe but not in North America.
H. American Indians had never been exposed to the smallpox virus, so resistant individuals had not yet become common.
J. American Indians were exposed to a virus that was different from the virus for smallpox in Europe.
Answer:
I can't see the graph but I believe that the answer is H
What is the role of oxygen in photosynthesis
Answer:
as fare as I can remember oxygen is actually a waste product that is produced at the end of a plant's photosynthesis cycle
Explanation:
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James examines a cell from an aloe plant and a cell from an owl feather. Which structure is found only in the cell from the aloe plant?
O A. chloroplast
OB. membrane
O C. mitochondrion
O D. nucleus
The chloroplast will only be found inside the Aloy plant while other structures will be shared by both cells. Option A is correct.
Difference between Plant and animal cells:Both plant cell animal cells are eukaryotic cells, but both have some unique structures.Plants have a cell wall but animals just have a cell membrane.A plant cell has a chloroplast for photosynthesis while an animal cell does not have a chloroplast.Since owl is an animal and Aloy is a plant
Therefore, the chloroplast will only be found inside the Aloy plant while other structures will be shared by both cells.
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Explain how greenhouses modify the environment to improve growing
conditions for plants?
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Which row shows the chambers of the heart, from those with the thickest walls to those with the
thinnest walls?
from top to bottom it goes from the thickest to thinnest
A.
atria
left ventricle
right ventricle
B
atria
right ventricle
left ventricle
с
left ventricle
right ventricle
atria
D
right ventricle
left ventricle
atria
Name the nitrogen bases that pair up to make the rungs of the DNA ladder.
Answer:
Two of the bases are purines- adenine and guanine. The pyrimidines are thymine and cytosine.
Studying____
we infer how Pangea split into continents
Answer:
Scientists believe that Pangea broke apart for the same reason that the plates are moving today. The movement is caused by the convection currents that roll over in the upper zone of the mantle.
Explanation:
Answer: Pangea broke apart for the same reason that the plates are moving today. The movement is caused by the convection currents that roll over in the upper zone of the mantle.
Explanation: Scientists believe that Pangea broke apart for the same reason that the plates are moving today. The movement is caused by the convection currents that roll over in the upper zone of the mantle. About 200 million years ago Pangaea broke into two new continents Laurasia and Gondwanaland.
Identify the statement below that is NOT a principle of evolution. O Populations evolve, individuals do not O Negative adaptations will become more common in a population O Variations occur naturally within a population Adaptations help individuals compete successfully for survival
Answer:
Negative adaptations will become more common in a population
Explanation:
that's the one that is NOT a principle
Negative adaptations will become more common in a population is NOT a principle of evolution.
what is population ?A discrete accumulation identifiable characteristics such as people, animals with the objective of analysis and data collection is called a population.
A population consists of a same group of species who reside in a particular geographical place with their reproductive capacity to interbreed.
In a population Not all individuals are able to survive and reproduce due to genetic variations in them, a local population is restricted to a smaller area or can occupy a larger area, making up for the entire species.
when individuals in local populations spread between other local populations called as metapopulation.
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how does climate and vegetation vary with latitude and elevation?
Answer:
Climate and vegetation vary with latitude and altitude of an area. Latitude measures distance from the equator; altitude measures elevation above sea level. ... Deserts have little precipitation and little vegetation. They are found in tropical, temperate, and Polar Regions.
The climate and vegetation may significantly vary with the latitude and elevation. This is because as elevation increases the temperature decreases gradually that do not favor the actual growth of vegetation.
What is Climate?Climate may be defined as a type of weather conditions that are persuading in any geographical location for a long period of time. In a more simple sense, it is characterized as the long-term pattern of weather in a particular area.
Latitude estimates the distance from the equator part of the earth and goes through the tropical, temperate, and colder regions of the earth. The vegetation is typically reduced with increasing the altitude or elevation with respect to the sea level.
It may also be noticed that the vegetation may alter with respect to the geographical location of the whole earth. It was never found to be completely absent.
Therefore, the climate and vegetation may significantly vary with the latitude and elevation.
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What does atomic number tell you about an atom? * Number of electrons in the nucleus Number of protons and neutrons in the nucleus Number of protons in the nucleus Number of electrons in the electron cloud around the nucleus *NEED ANSWER QUICKLY*
Answer:
Number of protons in the nucleus
Answer:
Number of protons in the nucleus
Explanation:
Select the correct answer. What falls in the gray area between living and nonliving things? A bacteria B. mold C. virus D. yeast Reset
Answer: C Virus
Explanation:
Why is it virus?, you may ask. Well... virus falls on the grey area between non living and living things
10 POINTS QUESTION: Objects of different masses are suspended from a height. Which combination of features will have the greatest gravitational potential energy?
A. high mass and high height
B. high mass and low height
C. low mass and low height
D. low mass and high height
Answer: high mass and high height
Explanation:
The gravitational potential energy is refered as the potential energy that has to do with the energy in a particular object due to the height of that object.
With the above explanation, when objects that have different masses are suspended from a height, the one that will have the greatest gravitational potential energy will be the one with a high mass and high height.
Therefore, the correct option is A.
