Explain why all scales point toward a fish's tail.
Answers
All scales on a fish are oriented toward the tail for a few reasons. Firstly, this orientation helps to reduce drag and increase hydrodynamic efficiency when swimming through water.
The scales act as tiny fins, providing lift and reducing turbulence as the fish moves through the water. Additionally, the scale orientation provides protection for the fish's body. As a fish swims through water, the scales help to deflect any debris or potential predators that may come into contact with the fish. By directing all scales toward the tail, the fish is able to maximize the benefits of both hydrodynamic efficiency and protection. This orientation also allows for the easy shedding of old scales and growth of new ones as the fish matures. In conclusion, the orientation of fish scales is a key adaptation for the survival and efficient movement of the fish.
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Related Questions
A teacher divides her class into four groups. She assigns
each group the task of measuring the volume of a liquid in
a container three times. The teacher already knows that
the volume is 18 mL.
Based on the results from each group, which group makes the most precise
measurements of the liquid's volume?
A. Group A: 17.9 mL, 19.1 ml, 21.0 mL
B. Group B: 18.5 mL, 18.0 mL, 17.8 mL
OC. Group C: 19.1 mL, 19.0 mL, 17.0 mL
D. Group D: 20.0 mL, 20.1 mL, 19.9 mL
Answers
Answer:
Group D
Explanation:
Precision is how close the measurements are to each other
what is the specific mechanism by which the chicxulub impact is believed to have caused the extinction of the dinosaurs and many other species 65 million years ago?
Answers
The specific mechanism by which the Chicxulub impact is believed to have caused the extinction of the dinosaurs and many other species 65 million years ago involves several factors. These factors include:
1. Impact shockwaves: The massive impact generated shockwaves that resulted in earthquakes and volcanic eruptions, causing destruction of habitats and ecosystems.
2. Ejecta: The impact ejected enormous amounts of debris into the atmosphere, which blocked sunlight and led to a decrease in global temperatures, disrupting photosynthesis and food chains.
3. Firestorms: The heat generated from the impact likely caused massive wildfires, further destroying habitats and releasing more debris into the atmosphere.
4. Acid rain: The chemical reactions from the impact and fires released large amounts of sulfur and other toxic compounds into the atmosphere, which led to acid rain that harmed both terrestrial and aquatic ecosystems.
5. "Impact winter": The combined effects of debris in the atmosphere, decreased sunlight, and lower temperatures led to an "impact winter," which further disrupted food chains and caused the extinction of many species, including the dinosaurs.
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Name the early-twentieth-century hypothesis that was at first rejected by geologists and the more comprehensive theory that later replaced it.
Answers
The concept of continental go with the flow that cause thoughts of sea ground spreading, then the concept of plate tectonics turned into born.
The essential cause that Wegener's speculation turned into now no longer prevalent turned into due to the fact he recommended no mechanism for transferring the continents. He idea the pressure of Earth's spin turned into enough to purpose continents to move, however geologists knew that rocks are too robust for this to be true.
Wegener used fossil proof to assist his continental go with the flow speculation. The fossils of those organisms are observed on lands which can be now a ways apart. Grooves and rock deposits left via way of means of historic glaciers are observed these days on special continents very near the equator.
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Choose THREE examples that correctly predict the effect of a change on the ecosystem.
А
A decrease in the kangaroo rat population will cause a decrease in the coyote
population
B
A decrease in the desert tortoise population will cause a decrease in the
rattlesnake population
Wc
A decrease in the rattlesnake population will cause an increase in the kangaroo
Answers
A decrease in the desert tortoise population will cause a decrease in the rattlesnake population describes the change on the ecosystem.
What is Ecosystem?An ecosystem is a region where different species of plants, animals, and other organisms coexist in harmony with the environment, including the climate and geography.
An ecosystem is a region where a bubble of life is created by plants, animals, and other organisms interacting with the weather, environment, and other factors. Abiotic variables, or nonliving components, coexist with biotic components in ecosystems. Plants, animals, and other species are biotic factors. Along with rocks, temperature and humidity are abiotic variables.
Every component of an ecosystem is directly or indirectly dependent upon every other component.
Therefore, A decrease in the desert tortoise population will cause a decrease in the rattlesnake population describes the change on the ecosystem.
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In pea plants purple flowers are dominant to white flowers. A pea plant, F1 offspring of a true-breeding plant with purple flowers and a true-breeding plant with white flowers, is crossed with a plant that has white flowers (recessive). What percent of the plants in the next generation will have white flowers?
Answers
Answer:
50%
Explanation: there is a 50% chance of each
a gene from a plant is inserted into a bacterial chromosome. The bacterium is the able to express the plant gene
-what do the two organisms have in common that allows the bacterium to express the plant gene?
- compare the location of DNA replication in a bacterium to that of a plant cell
read the question carefully. then enter your answer
Answers
To introduce a desired trait into a crop, a foreign gene (transgene) encoding the trait, as well as a "cassette" of additional genetic material, must be inserted into plant cells.
define gene ?
The term gene can have multiple distinct meanings in biology. The Mendelian gene is a fundamental unit of heredity, while the molecular gene is a DNA sequence that is translated to create functional RNA. Protein-coding genes and noncoding genes are the two categories of molecular genes.
During gene expression, DNA is transcribed into RNA first. The RNA might be directly functional or serve as an intermediary template for a protein that does anything. The inheritance of phenotypic characteristics is based on the passage of genes from one organism to its offspring. These genes combine to form various DNA sequences known as genotypes. The phenotypes are determined by genotypes as well as environmental and developmental variables.
To introduce a desired trait into a crop, a foreign gene (transgene) encoding the trait, as well as a "cassette" of additional genetic material, must be inserted into plant cells. The cassette contains a "promoter" DNA sequence that determines where and when the foreign gene is expressed in the host, as well as a "marker gene" that allows breeders to determine which plants contain the inserted gene through screening or selection. For example, marker genes may make plants resistant to non-medical antibiotics (e.g., agromycin, canamycin) or tolerant to particular herbicides.
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Why is dna synthesis considered to be discontinuous?.
Answers
DNA synthesis is discontinuous because of the replication process that occurs in short fragments referred to as Okazaki fragments. During DNA synthesis, the DNA helix is unwound, and new complementary strands are synthesized in the leading and lagging strands.The DNA polymerase enzyme synthesizes a new strand of DNA in the leading strand by reading the template strand continuously.
The lagging strand is synthesized in the direction opposite to the DNA helix's unwinding direction, which causes the DNA helix to form loops, leading to the formation of fragments. The DNA polymerase synthesizes Okazaki fragments in short sequences of DNA approximately 1,000-2,000 nucleotides long. As each Okazaki fragment is synthesized, the DNA polymerase requires a new primer to begin the next fragment. Primers are short nucleotide sequences that provide the starting point for DNA synthesis.
The Okazaki fragments are then joined together by DNA ligase to form the final strand of the lagging strand.In summary, DNA synthesis is considered to be discontinuous due to the replication process that occurs in short fragments referred to as Okazaki fragments. The lagging strand is synthesized in the direction opposite to the DNA helix's unwinding direction, leading to the formation of fragments. The DNA polymerase synthesizes Okazaki fragments in short sequences of DNA approximately 1,000-2,000 nucleotides long, and the Okazaki fragments are joined together by DNA ligase to form the final strand of the lagging strand.
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Plz help! I will mark Brianliest!
What is the role that vaccines have played in historical pandemics and epidemics?
Answers
You don’t have to use this word for word just an idea
Answer:
The "Savior" role
Explanation:
As u can see in past pandemics and epidemics vaccines were made to kill and eliminate pandemics and epidemics and or give ppl that take the vaccine immunity to catching the pandemic or epidemic.Vaccines have honestly saved a lot of lives since 1796
Cell walls are only found in animal cells.
Answers
Answer:
False
Explanation:
Animal cells do not have a cell wall
Answer:
i think so yes beacuse i remember it that i read in in science
all infectious diseases: a) are contagious b) only occur in humans c) are caused by microorganisms or their products d) are caused by vectors e) involve viruses as the pathogen
Answers
Answer:answer is A
Explanation:
Who is ultimately responsible for the actions that occur in the dental office?
a. dental office manager
b. dental auxiliary
c. dentist
d. receptionist
Answers
Ultimately, the c)dentist is responsible for the actions that occur in the dental office. As the licensed healthcare professional, the dentist is legally and ethically responsible for all patient care provided in the office.
However, it is important to note that each member of the dental team plays a vital role in ensuring safe and effective patient care. The dental office manager is responsible for managing the business aspects of the office, including ensuring compliance with regulations and laws.
Dental auxiliaries, such as dental hygienists and dental assistants, provide direct patient care and assist the dentist during procedures. The receptionist is responsible for scheduling appointments, managing patient records, and facilitating communication between the patient and the dental team. While each member of the team has specific responsibilities, ultimately it is the dentist who is held accountable for the actions of the entire team.
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4. If eutrophication is severe, the water body may no
longer be able to support life. This is because the water
becomes depleted of____
due to the overactive_____________
that are decomposing the surplus of
decaying organisms, which died due to the__________.
The bacteria use the oxygen for__________.
.
Answers
Answer: becomes depleted of____
due to the overactive_____________
that are decomposing the surplus of
decaying organisms, which died due to the__________.
The bacteria use the oxygen for__________.
.
Explanation: Eutrophication sets off a chain reaction in the ecosystem, starting with an overabundance of algae and plants. The excess algae and plant matter eventually decompose, producing large amounts of carbon dioxide. This lowers the pH of seawater, a process known as ocean acidification.
I will give brainliest!!!!!!! Protein synthesis can occur on the rough endoplasmic reticulum (ER) but not on the smooth ER. Which cell structures are attached to the surface of the rough ER that allow it to make proteins? Choose 1 answer: A DNA strands (Choice B) B Vacuoles (Choice C) C Chloroplasts (Choice D) D Ribosomes
Answers
Answer:
D. Ribosomes
Explanation:
Rough endoplasmic reticulum (RER) bears ribosomes on it surface which give it granular apperance and they are the site of protein synthesis.
Answer
The answer is a
the random movement of molecules is referred to as
Answers
Answer:
transport. osmosis. diffusion
Explanation:
Answer:
brownian motion.
Named after Robert Brown
Regardless of where in the world a vineyard is located, for the winery to produce a Burgundy, it must use varietal grapes that originated in Burgundy, France. The most effective way for a new California grower to plant a vineyard to produce Burgundy is to _____. A. plant seeds obtained from French varietal Burgundy grapes
B. transplant varietal Burgundy plants from France
C. acquire a tissue culture of varietal Burgundy grapes from France
D. graft varietal Burgundy grape scions onto native (Californian) root stocks
Answers
The most effective way for a new California grower to plant a vineyard to produce (wine) Burgundy is to-
graft varietal Burgundy grape scions onto native (Californian) rootstocks.
Burgundy has a wide range of unusual grape varieties. They are scarce at the same time. Because of this, it's very easy for us consumers. Burgundy bases its wines primarily on 2 grape varieties, unlike other wine regions. White wine grapes are called Chardonnay. Red wine grapes are called Pinot Noir. primarily in the well-known Cote de Or, Chablis, and the less well-known Cote Chalonnaise! It can't possibly be that simple! A French wine region always has something unique to discover. Burgundy is not an outlier. There are two unique grape varieties in addition to Chardonnay and Pinot Noir: Gammay and Aligote. primarily employed in the production of Beaujolais, Rosé, and Crémant de Bourgogne wines.
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How are the functions of the small intestine and the large intestine different? A: The small intestine absorbs nutrients and wastes out of the digested food, while the large intestine produces a digestive juice to break down the food. B: The small intestine breaks down food into a thin mixture containing nutrients, while the large intestine absorbs water from the food mixture and turns it into solid waste. C: The small intestine provides oxygen to the digested food before it goes to the rest of the body, while the large intestine absorbs nutrients and wastes from the food mixture. D: The small intestine pumps food and nutrients throughout the body, while the large intestine turns the digested food into a thin liquid mixture. PLS HELP
Answers
Answer:
B: The small intestine breaks down food into a thin mixture containing nutrients, while the large intestine absorbs water from the food mixture and turns it into solid waste.
Explanation:
Small intestine and large intestine are the important organs of digestive system in the human body. The small intestine functions by absorbing the nutrients of the simpler form of food. After absorbing the nutrients, the residue left is passed to the large intestine. The large intestine absorbs the water and further helps in eliminating the feces. It do not produces any enzyme to break the food unlike the small intestine. The process of digestion is completed by the small intestine.
Answer:The small intestine breaks down food into a thin mixture containing nutrients, while the large intestine absorbs water from the food mixture and turns it into solid waste. (B. I just took test got it right.)
Explanation:
(13.02 MC)
How are the functions of the small intestine and the large intestine different? (2 points)
Group of answer choices
The small intestine absorbs nutrients and wastes out of the digested food, while the large intestine produces a digestive juice to break down the food.
The small intestine breaks down food into a thin mixture containing nutrients, while the large intestine absorbs water from the food mixture and turns it into solid waste.
The small intestine provides oxygen to the digested food before it goes to the rest of the body, while the large intestine absorbs nutrients and wastes from the food mixture.
The small intestine pumps food and nutrients throughout the body, while the large intestine turns the digested food into a thin liquid mixture.
Looking at colony morphology is useful for identifying different bacteria species because of which of the following: A. An individual colony (on a petri dish) represents a single bacterial speciesB. a rapidly growing bacteria speciesC. has multiple types of bacteria that can be separated by streaking a plate with the colony.
Answers
Looking at colony morphology is useful for identifying different bacteria species because of An individual colony (on a petri dish) represents a single bacterial species. The correct option is A.
Colony morphology is the appearance of bacterial colonies when they are grown on a solid medium, such as a petri dish. Each individual colony on the plate represents a single bacterial species because it has grown from a single cell. This is a useful way to identify different bacterial species because each species has its own characteristic colony morphology.
By looking at the size, shape, color, and texture of the colonies, scientists can distinguish between different bacterial species. It is important to note that colony morphology alone is not always enough to accurately identify a bacterial species, and additional tests may be required.
Thus, the correct option is A.
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How do lenses correct vision?
A.) They bend the cornea.
B.) They reflect light away from the retina.
C.) They reflect light towards the retina.
D.) They bend light so that it focuses on the retina.
Answers
Answer: D
Explanation:
Glasses correct vision by allowing your eyes to focus light on the correct spot of your retina. The curved frames bend light, and with the right prescription, these frames manipulate the light to reach the correct spot on your retina.
Glasses improve vision by focusing light on the retina. With the right prescription, curved frames bend light to reach the retina.Therefore, option (D) is correct.
What is the function of lenses?Your eyes will be able to focus light on the appropriate portion of your retina when you wear glasses. This will result in improved vision. Light is bent by the curved frames, and when combined with the appropriate prescription, these frames may modify light such that it falls on the retina in the correct location.
Myopia, often known as the inability to see things that are far away, can be rectified with a lens that has a diverging power, which lowers its overall strength. The condition known as hyperopia, in which a person has difficulty seeing things that are up close, can be treated with a lens that converges light in order to boost its power.
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The movement of a solute in a cell from LOW concentration to HIGH concentration is called
Answers
Answer:
active transportation
Explanation:
help me its urgent i need help please help me
Answers
The correct matching of the given items are:
Omnivore- eats producers and consumersPopulation- all living and non-living things found in an areaSpecies- a group of living things, more than one organism.Ecosystem- describes a type of organism and what group it belongs to.What is an Organism?This refers to an individual animal or living thing that is uni-cellular.
Hence, the other answers are:
Community- a place where an organism lives and produces its own food.Limiting factors- anything that can limit the size of a populationCarnivore- eats herbivores, omnivores and other smaller carnivoresFood web: a network of food connected chains that shows a feeding relationship Symbiosis: a close relationship between species including mutualism, commensalism, parasitismRead more about ecosystem here:
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FILL THE BLANK. a sulfur atom can make up to ____ bonds in a lewis structure.
Answers
A sulfur atom can make up to 6 bonds in a Lewis structure.
In a Lewis structure, the number of bonds that an atom can form is determined by its valence electrons. Sulfur belongs to Group 16 of the periodic table and has 6 valence electrons. Each valence electron can participate in the formation of a covalent bond by sharing an electron pair with another atom. Since sulfur has 6 valence electrons, it can form up to 6 bonds in a Lewis structure.
The octet rule, which states that atoms tend to gain, lose, or share electrons to achieve a stable configuration with 8 valence electrons, applies to sulfur as well. By forming 6 bonds, sulfur can complete its octet and attain a stable electron configuration. These bonds can be single, double, or triple bonds, depending on the number of electrons shared with other atoms.
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dominant and recessive pattern of inheritance. false true
Answers
Answer:
true
Explanation:
because there is existence of fittest
2 questions
10. During cell division, the genetic material in a cell needs to duplicate - before
it divides into 2. *
True
Or
False
11. Chromosomes (genetic material) are located outside of the nucleus of the
cell. *
True
ОR
False
Answers
Answer:
10: True
11: Eukaryotic chromosomes and Linear chromosomes are located in the nucleus.. Not outside. So, I think false. But you can pick
How do ecosystems return to normal after a flood?
Answers
This really depends on the ecosystem, as each ecosystem may respond differently.
Explanation:
How an ecosystem responds is going to depend on the ecosystem, as each ecosystem may respond differently, and also on the extent and magnitude of the natural disaster. It takes ecosystems a long time to return to semi-normal conditions it can take up to 200 years for a forest to regrow after a huge fire. and that doesn't include the animals displaced/killed in the disaster.
Through a full cycle, the Na/K pump moves a net of one sodium ion that has one positive charge across a membrane. One Na/K pump nay be capable of 10,000 cycles in a minute. What is the current through a single pump in 1s?
Answers
The current through a single pump in 1s if one Na/K pump may be capable of 10,000 cycles in a minute is 193000 A.
To determine the current that is produced through a single pump in 1s, we will have to make use of Faraday's law of electrolysis, which states that the amount of chemical change that occurs during electrolysis is directly proportional to the quantity of electricity that passes through the system. Thus, we have:
Q = n × F × Z
where Q = quantity of electricity, n = number of moles of electron passed, F = Faraday constant, 96500 C/mol, and Z = charge of an ion in electrochemical reactions
The number of electrons involved in the electrochemical reaction is 2. Since the charge of a sodium ion is +1, the charge of two sodium ions is +2. Thus,
Q = n × F × Z
= 1 mol × 96500 C/mol × 2C/mol
= 193000 C
To determine the current, we have:
I = Q / t
where I = current and, t = time taken.
Thus, I = 193000 / 1 s
= 193000 A
Therefore, the current through a single Na/K pump in 1s is 193000 A.
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consider three loci experiencing different selective conditions. assuming the same initial number of gene copies and constant population size, which locus will have the longest time to coalescence?
Answers
The locus under purifying selection is likely to have the longest time to coalescence, because it experiences the strongest force reducing genetic diversity.
The locus experiencing the strongest selective conditions will have the lowest effective population size and thus the longest time to coalescence. On the other hand, the locus under positive selection is likely to have the shortest time to coalescence, because it experiences the strongest force increasing genetic diversity. The locus under neutral selection is expected to have an intermediate coalescence time, because it is not subject to any strong selective pressure.
The time to coalescence refers to the amount of time it takes for the gene copies of a given locus to coalesce (i.e., trace back to a common ancestor). The coalescent time depends on various factors, including the effective population size, the mutation rate, and the selective conditions at the locus.
Given that the effective population size and mutation rate are the same for all three loci, the locus that experiences the strongest selective conditions will likely have the longest time to coalescence. This is because stronger selection reduces the effective population size, which in turn reduces the coalescent rate.
So, the locus experiencing the strongest selective conditions will have the lowest effective population size and thus the longest time to coalescence. The other two loci may have a higher effective population size and shorter coalescence times due to weaker selective pressures.
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Breathing allows the body to obtain oxygen, which is used in aerobic respiration to generate atp, and allows the body to eliminate carbon dioxide, which is a waste product of aerobic respiration.
Answers
Breathing is essential for the body to acquire oxygen, which is utilized in aerobic respiration to generate ATP. Additionally, breathing facilitates the elimination of carbon dioxide, a byproduct of aerobic respiration.
Breathing, also known as respiration, is the process by which the body acquires oxygen and eliminates carbon dioxide. Oxygen is crucial for aerobic respiration, the process by which cells generate energy in the form of ATP. During aerobic respiration, oxygen acts as the final electron acceptor in the electron transport chain, allowing for the efficient production of ATP.
When we breathe in, oxygen is inhaled into the lungs, where it diffuses into the bloodstream and binds to hemoglobin in red blood cells. The oxygen-rich blood is then transported to tissues throughout the body, providing the necessary oxygen for cellular respiration.
Simultaneously, carbon dioxide, a waste product of aerobic respiration, is produced within cells. Carbon dioxide diffuses into the bloodstream and is carried back to the lungs. When we exhale, carbon dioxide is released from the body, completing the process of eliminating waste.
Breathing ensures a constant supply of oxygen for aerobic respiration and removes carbon dioxide, maintaining a balance in the body's gas exchange. Without adequate breathing, cells would be deprived of oxygen, leading to cellular dysfunction and energy depletion.
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Which of the following questions can be answered scientifically?
a
Should we just let the river flow where it wants?
b
What can be done to stop erosion?
c
Is erosion control worth the financial costs?
d
Can planting cover crops reduce erosion?
Answers
Answer:
d
Explanation:
17. The scientific study of human populations is called
A. ecology
B. demography
C. natural selection.
D. transition.
Answers
Answer:
B
Explanation:
Demography is the study of population
What does the ER do to the protein?
Answers
Answer: It is the entrance that transports proteins in the golgi bodies.
Explanation: The ER takes in proteins and sands them into golgi body packages that with then go on route to their destinations. (EX: The ER sends proteins into the golgi bodies, which then transport the proteins to the cell membrane.)
Answer:
transports proteins in the golgi bodies.
Explanation: