Answer:
Explanation:
1. Hydrological cycle: the continuous movement of water between the Earth's surface and the atmosphere.
2. Industry: pollutes water sources by dumping wastes in rivers, streams, and oceans.
3. Sewage: the leading cause of water contamination in countries without water treatment plants.
4. Agriculture: a source of water pollution caused by the overuse of pesticides and fertilizers.
5. Eutrophication: caused by an overabundance of organic matter in water supplies.
6. Putrefaction: the decomposition of organic matter by microorganisms
7. Pesticides: a chemical pollutant that can enter the water cycle through agricultural or domestic use.
8. Petroleum: can cause the contamination of underground water supplies if poured on the ground
9. Lead: a metal that leaks into water supplies via the soil or aging water systems.
10. Humoral immunity: depends upon the production of disease-specific antibodies to destroy harmful bacteria.
11. Stimulants: increases the activity of the central nervous system.
12. Depressants: reduces the activity of the central nervous system.
13. Bacterial infection: caused by the reproduction of a small infectious agent, which produces poisons that destroy cells
In which form is most of the water on Earth?
Answer:
oceans
Explanation:
The vast majority of water on the Earth's surface, over 96 percent, is saline water in the oceans.
What is the role of ATP in transport of materials
Answer:
Functions of ATP in cells
Explanation:
ATP plays a critical role in the transport of macromolecules such as proteins and lipids into and out of the cell. The hydrolysis of ATP provides the required energy for active transport mechanisms to carry such molecules across a concentration gradient.
Answer:
The role of ATP in the transport of materials :- To move substances against a concentration or electrochemical gradient, the cell must utilize energy in the form of ATP during active transport. Primary active transport, which is directly dependent on ATP, moves ions across a membrane and creates a difference in charge across that membrane.Explanation:
Hope this helps you !!which division of the nervous system has two nerve fibers connecting the cns to an effector?
Scientist put a sample of water into a sealed tank. water can be a solid, liquid, or a gas. At first the water was a liquid . Then, the scientists transferred energy out of the substance, and was we changed phase. What after the phase change, the water molecules moved…
ANSWERS
A. Faster and started moving away from each other
B. Faster and started moving around each other
C. Slower and started moving in place
D. Slower and started moving around each other
Answer: C. Slower and started moving in place
Explanation:
am very good at science
In what phase do mosses spend most of their life cycle?
Answer: The familiar, green, photosynthetic moss plants are gametophytes. The sporophyte generation is very small and dependent on the gametophyte plant.
Describe Hydrogen Bonding.
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Hydrogen bonding is a interaction between two hydrogen atoms that is very essential for life on Earth. It is notoriously seen between water molecules, and it occurs when there is a slight disbalance in electrical charge between two Hydrogen atoms, and Oxygen atom that comprise water. This slight imbalance makes the Oxygen slightly more electronegative, and the two hydrogen atoms slightly more electropostive. The reason why water when spilled forms globules for this exact reasoning. The slightly positive charged hydrogen feels an electrostatic attraction to the Oxygen atom thus forming a strong bond. An interesting fact that comes from this electrical disbalance is that when salt is added to water, water is able to conduct electricity because of this disbalance in charge it can seperate the sodium chloride lattices into ions.
how well an organism can survive and reproduce in its environment
it depends on what organism it is
where in the chloroplast does the photo part of photosynthesis occur?
Answer:
Photosynthesis happens when water is absorbed by the roots of green plants and is carried to the leaves by the xylem, and carbon dioxide is obtained from air that enters the leaves through the stomata and diffuses to the cells containing chlorophyll.
Explanation:
:)
Photosynthesis happens when water is absorbed by the roots of green plants and is carried to the leaves by the xylem, and carbon dioxide is enters the leaves through the stomata and diffuses.
What is the function of the chloroplast?The organelles called chloroplasts allow plants to capture the energy of the Sun in energy-rich molecules, cell walls allow plants to have rigid structures.
Thus, photosynthesis occur in the chloroplast.
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Answer:b) The air at high altitudes are less dense, so its harder to breathe.
Explanation:
AS altitude increases, the air pressure drops. This reduces the amount of gas molecules in the air so the air becomes less dense compared to air closer to sea level.
Need help please having trouble
Answer:
Brain
toxins
smaller
injury
protein
slow
rest
dementia
Why is it that nitrogen is often a limiting plant nutrient, despite the fact that the atmosphere is 80% nitrogen gas (N2)
Nitrogen is a limiting plant nutrient because the bulk of the available nitrogen in the atmosphere is not usable by plants.
Plants are not able to make use of the nitrogen in the atmosphere directly. Atmospheric nitrogen needs to be converted into usable forms before it can be accessed by plants.
The conversion of atmospheric nitrogen to usable form by plants is known as nitrogen fixation and this is achievable by the activities of certain bacteria.
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Tidal volume is air ________. Group of answer choices forcibly expelled after normal expiration inhaled after normal inspiration exchanged during normal breathing remaining in the lungs after forced expiration
Answer:
Tidal volume is air *around one half liter*. Group of answer choices forcibly expelled after normal expiration inhaled after normal inspiration exchanged during normal breathing remaining in the lungs after forced expiration
Explanation:
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Individuals, as well as industry—and automobile manufacturers in particular have an obligation to work to reduce carbon dioxide emissions that may increase the level of greenhouse gases in the atmosphere. Agree or disagree
It is right that individuals, as well as industry—and automobile manufacturers, in particular, have an obligation to work to reduce carbon dioxide emissions that may increase the level of greenhouse gases in the atmosphere.
Carbon dioxide is a greenhouse gas, which means that it traps heat in the atmosphere. This can lead to climate change, which is already having a number of negative effects on the planet, such as rising sea levels, more extreme weather events, and changes in plant and animal life.
Individuals can reduce their carbon dioxide emissions by making changes to their lifestyle, such as driving less, using less energy at home, and eating less meat. Industry can reduce their carbon dioxide emissions by investing in new technologies, such as renewable energy and energy efficiency.
Automobile manufacturers have a special responsibility to reduce carbon dioxide emissions, as cars are a major source of greenhouse gases. They can do this by designing more fuel-efficient cars and by using alternative fuels, such as electric and hybrid cars.
It is important for everyone to do their part to reduce carbon dioxide emissions. By working together, we can help to protect the planet for future generations.
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renewable energy makes up approximately how much of the total u.s. energy budget?
Answer:9.2 quadrillion BTU
Explanation:
how might the shape of a muscle cell be related to its function
Answer: The muscle cells long oval shape helps it reach across to pull on its neighboring cells, while also cimpressing into a circular shape when the fibers contract. This it take up an optimal amount of space while not make the cell bulge in an uncomfortable and awkward way.
Explanation:
Fraternal twins, while conceived at the same time, are not genetically identical.
Which statement best explains why these siblings are genetically different from each other
Answer:
Fraternal twins are also called dizygotic twins. And the difference between fraternal and identical twins is that fraternal twins derive from two different eggs. Fraternal twins may be the same gender, they may have many of the same characteristics, but also may be very different from each other and, in fact, share half of their genes just like their sisters and brothers. It's important to recognize that the difference between fraternal twins and monozygotic, or identical twins, is that monozygotic twins result from the fertilization of a single egg with a single sperm and then during the embryonic development, or during the cell splits, those massive eggs split into two individuals, which later develop into two offspring.
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List three limitations for measuring cell size
Answer:
Cell size is limited by the cell's surface- area- to - volume ratio
what does at risk classification mean??
Answer:
Risk classification is the practice of grouping people together.
Explanation:
According to the risks they present, including similarities in costs for potential losses or damages, how frequently the risks occur, and whether steps are taken to reduce or eliminate the risks.
Megan observes four cells under a microscope and makes sketches of them as shown. Identify whether the cells are prokaryotic or eukaryotic.
which cells requires the most food
Answer:
We need to eat and drink to survive, and so do our cells. Using a process called endocytosis, cells ingest nutrients, fluids, proteins and other molecules.
Explanation:
A true-breeding tall pea plant is crossed with a true-breeding short pea plant, and all the offspring are tall. What is the most likely genotype of the offspring assuming a single-gene trait?
Answer:
(Tall: T, short: t)
Either Tt or TT
Explanation:
A tall plant with a short plant has a 100% probability of an offspring being tall.
Explain how carbon dioxide is cycled between the tree and fox. Name the specific processes involved.
Answer: Cellular Respiration and Photosynthesis, The tree releases oxygen during photosynthesis, which the fox takes in during cellular respiration. ... The fox releases co2 during cellular respiration, which the tree absorbs during photosynthesis.
Explanation:
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A classmate states that both energy and matter can be created during photosynthesis and cellular respiration. Is this true? Explain
Energy and matter are also produced during photosynthesis.Chemical energy in the form of glucose and matter in the form of oxygen gas are produced during photosynthesis.Since these are the results of the reaction, they are regarded as process outputs.
Can both energy and matter be created during photosynthesis?
Some cells employ a process called photosynthesis to convert light energy into food.Because it enables plants to produce the food required for the rest of the ecosystem, photosynthesis is crucial.Producing organisms, or those that grow their own sustenance, are plants.The foundation of the ecosystem is formed by producers, who transform solar energy into chemical energy in the form of food for themselves and other ecosystem inhabitants.Although many ecosystems are dominated by plants, other organisms are also capable of photosynthesis.Some bacteria and algae are capable of photosynthesizing, and these organisms are the producers in their ecosystem. A biological process called photosynthesis consumes both matter and energy.The world's physical components are made of matter.The capacity to perform work is energy.By use of various mechanisms, matter and energy can be switched for one another.On the other hand, neither matter nor energy can be generated nor destroyed.The first law of thermodynamics is that they constantly evolve into new forms.All processes in the universe operate in this manner.Energy can be transformed into a variety of forms.Several instances include:Chemical drivekinetic energythe potential energy of gravityelastic force The substance and energy persist even after an organism dies.Instead, they are changed into other forms.For instance, both matter and energy are components of plants.Fungi and bacteria in the soil aid in the breakdown of a plant's internal substance into its constituent parts when it dies.These can be used by newly sprouting plants by being recycled into the soil.As a result, neither the energy nor the substance is wasted; rather, they are transformed into new forms.To learn more about photosynthesis refer
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A dog who inherits an allele for
curly hair and an allele for straight
hair has curly hair because the
allele for-
E. curly hair is recessive.
F. curly hair is dominant.
G. straight hair is dominant.
H. curly hair is inherited from both
parents.
18. Replicate the following four DNA strands using what you know about complementary base pairs.
a. AATACGTCCAGATTTT
c. CCCGCGGAATATACA
b. TTAACCGAGTTCAGA
d. AGGGCTACTTCAGAC
Answer:
a. TTAGCAGGTCTAAA
b. GGGCGCCTTATATGT
c. AATTGGCTCAAGTCT
d. TCCCGATGAAGTCTG
The replication can be TTATGCAGGTCTAAAA, GGGCGCCTTATATGT, AATTGGCTCAAGTCT, and TCCCGATGAAGTCTG respectively.
What is complementary base pairing?Complementary base pairing occurs when guanine always hydrogen bonds to cytosine and adenine always binds to thymine in DNA.
In comparison to the A-T bond, which always shares two hydrogen bonds, the bond between guanine and cytosine shares three hydrogen bonds.
Each strand of the double helix contains all of the information required to reconstruct the other half using the base pairing mechanism.
The strands are said to be complementary because each can be used to make the other.
Complementary base pairing describes how the nitrogenous bases of DNA molecules align with one another. The double-helix structure of DNA is also due to complementary base pairings.
TTATGCAGGTCTAAAA, GGGCGCCTTATATGT, AATTGGCTCAAGTCT, and TCCCGATGAAGTCTG are possible replications.
Thus, these are the complementary base pairing for the given codes.
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A gene has two alleles: A and a. In a population that is in Hardy-Weinberg equilibrium, 9% of individuals have the aa genotype. What is the frequency of the A allele
Not sure about what the question wants exactly, A alleles or AA alleles or Aa alleles. This is the answers for A alleles.
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why was it impossible to know about bacteria 5,000
years ago
Answer:
Im assuming because microscopes hadnt been invented. Also the idea of communicable diseases wasnt around so people assumed it was things like god that caused illness
Answer:
A true understanding of the physiology of these bacteria and their roles in ecology, host health, and natural product production requires their cultivation in the laboratory. Recent advances in growing these species include coculture with other bacteria, recreating the environment in the laboratory, and combining these approaches with microcultivation technology to increase throughput and access rare species. These studies are unraveling the molecular mechanisms of unculturability and are identifying growth factors that promote the growth of previously unculturable organisms. This minireview summarizes the recent discoveries in this area and discusses the potential future of the field.
Explanation:
The following is a short section of a DNA template before replication:
3' TACGGCTTAACC 5'
Based on your knowledge of DNA replication, which sequence would be the correct complementary strand synthesized by DNA polymerase?
A. 5' GGTTAAGCCGTA 3'
B. 5' AUGCCGTTUUGG 3'
C. 5' ATGCCGAATTGG 3'
D. 5' CCAATTCGGCAT 3'
Please Help!!
Answer I need help with this too
Explanation:
Where does cellular respiration take place?
A. endoplasmic reticulum
B. Golgi apparatus
С. mitochondria
D. ribosomes
Amphibians, such as frogs, have adapted to have thin, very permeable skin that is well supplied with blood vessels. How does this adaptation most likely help amphibians survive in aquatic environments?
A. It allows them to maintain fairly stable internal temperatures.
B. It allows them to absorb nutrients directly from their environment.
C. It allows them to release chemicals into their environment to attract mates.
D. It allows them to take in oxygen and release carbon dioxide through their skin.
Answer:
to allow easier gas exchange
Explanation:
