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Related Questions
arrange the steps in the order they occur in during the development of red blood cells
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Devolpement of red blood cells (RBC): stem cell -> blood cell -> RBC
so the sequence is:
- stem cells arise
- signaling triggering differentiation in stem cells
- genes for production of undifferentiated blood cells
- signaling to produce RBCs
All other cells with specific roles are developed from stem cells, which are the body's building blocks. In the correct circumstances, stem cells divide to create other cells known as daughter cells, either in the body or in a lab. The oxygen in our lungs is transported by red blood cells (RBCs) to the rest of our bodies. They then RBCs find their way back to our lungs, where carbon dioxide is expelled.
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one way in which stigma is adapted for reproduction in plants
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Answer:
In a flower, this landing zone and entrance is the stigma. It plays a pivotal role in reproduction. Most stigmas are adapted to trap pollen with hairs, flaps and other surfaces to increase their efficiency. Most stigmas are covered with a waxy, sticky substance.
phenotypic plasticity in water fleas (daphnia) is characterized by all the following except group of answer choices they are pale in coloration when living in water with a high concentration of oxygen. they experience changes in genotype when oxygen levels change. they have little hemoglobin when living in water with a high concentration of oxygen. phenotypic plasticity occurs at the biochemical, tissue, and organ level. they turn bright red when living in water with a low concentration of oxygen
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All of the following describe the phenotypic plasticity of water fleas (Daphnia), with the exception that their genotypes vary in response to oxygenation.
What kinds of animals exhibit phenotypic plasticity?The phenotypic flexibility that can be either adaptive or detrimental is illustrated by freshwater snails. These snails alter their shell form and slow down their growth when bluegill sunfish, a predator, is around. They become more resistant to crushing and more defended against predators as a result.
What is a good illustration of phenotypic plasticity?The ability of a genotype to exhibit several phenotypes depending on the environment in which it dwells is known as phenotypic plasticity. According to whether they were raised in the presence or absence of a possible predator, genetically identical water flea clones, for instance, can have different morphologies.
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Species Characteristics
X Short canine teeth, small prey size
Y 1-foot-long canine teeth, large prey size
Which species will most likely survive if the prey population in the area decreases?
A- Species X because it is difficult to bring down a small prey
B- Species X because short canines are less likely to break
C- Species Y because long canines are less likely to break
D- Species Y because it is easy to bring down a large prey
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The species will most likely survive if the prey population in the area decreases (A). Species X because it is difficult to bring down a small prey is correct option.
If the prey population declines, species X, which has short canine teeth and is specialized for small prey, would benefit. This is so because of how tough it is for them to take down a large prey due to their physical makeup. In contrast, due to their specialised traits, Species Y, with 1-foot-long canine teeth and an adaptation for huge food, may encounter difficulties when hunting smaller species. Therefore, in a scenario where the population of the prey drops, Species X has a higher chance of surviving.
Therefore the correct option is (A).
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What do you think why phytoplankton production is indispensable in producing quality seedstocks for aquaculture?
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Phytoplankton are considered in the production of seedstocks for aquaculture as they happen to greatly influence the quality of water, are the major source of dissolved oxygen and influence the pond ecology.
Ponds usually happen to contain an abundant population of phytoplankton. The phytoplankton play a very crucial role in the pond ecology and also influence the quality of water. They are also the major source of dissolved oxygen. They also provide nutrition and remove the excess nutrition.
Although phytoplankton generally are very beneficial to the aquaculture, under some conditions, they can also prove to be quite problematic in the production of fish and shrimp.
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Answer with true or false and correct the false one(s). 1. Saliva is produced by small intestine. 2. The gastric juice is responsible of liquefaction of meat. 3. Iodine water give a yellow color without starch. 4. The plant synthesis organic matter in the roots. 5. The crude sap and elaborated sap pass through conducting vessels. 6. Crude sap is a solution rich with starch and mineralp salts..
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Saliva is a clear, slightly alkaline liquid secreted into the mouth by the salivary glands and mucous glands, consisting of water, mucin, protein, and enzymes. It moistens the mouth, lubricates ingested food, and begins the breakdown of starches.
Gastric juice is a secretion of the gastric glands that includes hydrochloric acid, pepsinogen and mucus. The gastric juice aids in the digestion of food substances such as meat.
A solution of iodine in water has a light yellow, orange or brown coloration. The presence of starch turns this solution purple or violet.
Green plants synthesize organic material (sugar or carbohydrates) in their leaves where they undergo photosynthesis.
Crude sap is the sap of a plant that rises from the roots to the leaves. It passes through conducting vessels such as xylem and phloem in the plant.
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1. WHAT COOUNTRIES HAVE THE LARGEST ECOLOGICAL FOOTPRINT?
2. THE RICHEST COUNTRIES USE
% RESOURSES.
3. TYPES OF FOSSIL FUELS. WHICH WILL BE USED UP FIRST?
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1. Qatar — 14.72, Luxembourg — 12.79, United Arab Emirates — 8.95, Bahrain — 8.66, Trinidad and Tobago — 8.23, Canada — 8.08, Mongolia — 8.05, United States — 8.04, Kuwait — 8.03, Oman — 7.29
2. Russia, United States, Saudi Arabia, Canada, Iran, China, Brazil, Australia, Iraq, Venezuela
3. Oil is used up first at the current rate because Oil is mostly used as fossil fuel by humans. And many by-products are formed by Oil. The fossil fuel resource is limited in amount, so due to the continuous use of these fuels, it will be no more exist in the earth's crust
What's biology?
Biology is a natural sciences that deals with the study of living things.
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Answer:
True
Explanation:
You study plants, animals, and cells in biology if I'm not mistaken.
18.
Name THREE covalent modifications typically made to an RNA molecule in
eukaryotic cells before the RNA molecule becomes a mature mRNA.
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Answer:
The pre-mRNA molecule undergoes three main modifications. These modifications are 5' capping, 3' polyadenylation, and RNA splicing, which occur in the cell nucleus before the RNA is translated.
The commercial fishing industry uses large nets to capture fish. Often these nets catch many species of organism that are not used by humans. What Change could lessen the negative effect to this practice for the commercial fishing industry?
A. Designing nets that release unwanted species without harming them.
B. Using the net in deeper regions of the ocean where different organisms live.
C. Decreasing the size of the nets, but using more of them.
D. Exploring new and uncharted areas of the ocean where the nets can be used.
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Answer:
A. Designing nets that release unwanted species without harming them.
Explanation:
Over-fishing is a negative human practice that leads to the over-exploitation of aquatic ecosystems (i.e., both marine ecosystems and freshwater ecosystems). In an aquatic ecosystem, the communities of organisms coexist in a delicate balance where they are dependent on each other in the food web, providing stability to the whole ecosystem. Therefore, the over-exploitation of any aquatic species is expected to impact the whole ecosystem, thereby also having a negative impact on other fish populations.
1. Describe the similarities and differences between the cheek cell wet mount and dental plaque wet mount.
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Answer:
Cells from the cheek are a type of epithelial cell, similar to skin. ... They can be seen faintly even at 40x (scanning power), but the most dramatic images are at 400x where the nucleus is clearly visible as a dark spot in the center of the cell.
Explanation:
The similarity between cheek cells and dental plaque wet mount is both are living cells.
The difference between cheek cells and dental plaque wet mount is cheek cells are:
Cheek cells are similar to our skin cells and can be extracted easily, whereas the extraction of dental plaque can be hard.
Cheek cells are eukaryotic cells, whereas dental plaque is the microorganism cells.
What is a cheek cell?Cheek cells are cells that can be extracted easily with a cotton swab from inside the mouth.
What is dental plaque?Dental plaque is the deposition of bacteria or viruses in the bottom of the teeth.
Thus, The similarity is both are living cells.
The difference is both are different types of cells, one can be extracted easily dental plaque extraction is hard.
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Elephants are considered K-strategists because they give birth to only one calf at a time and most have five years in between having another calf. Calves stay under the protection of the mother and her herd until maturity at 10-15 years of age. What type of survivorship curve do elephants tend to follow
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Answer:
Type I curve
Explanation:
The K-strategist are species characterized by relatively stable populations that fluctuate at the carrying capacity of the habitat or niche in which organisms reside. Elephants are considered as K-strategists because they have a low population growth rate and relatively stable populations. There are three different types of survivorship curves. The Type I curve (also referred to as A curve) is characteristic of k-strategist organisms. Humans and elephants exhibit a Type I survivorship curve in which organisms tend to die when they become elderly. These species have a small number of offspring and provide parental care to ensure their survival. In a Type II survivorship curve, species produce many offspring and only some offspring survive (e.g., birds), while in Type III survivorship curve organisms produce many more offspring and most do not survive (i.e., r-strategists such as frogs or insects).
In most medical procedures, hazardous waste is produced. This waste is usually burned, which can release chemicals lie mercury into the air.
How could technology be best used to solve this problem?
A. Incinerate the waste in areas with low populations.
B. Find a way to trap the mercury before it is released.
C. Reduce the number of medical procedures performed.
D. Stored the waste underground instead of burning it.
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To solve the problem of hazardous waste generated from medical procedures and the release of chemicals like mercury into the air, a combination of technological approaches can be employed.
B. Find a way to trap the mercury before it is released: Implementing advanced filtration systems and scrubbers in medical waste incinerators can effectively capture and contain mercury and other harmful substances. This prevents their release into the environment and ensures their proper disposal.
D. Store the waste underground instead of burning it: Rather than incinerating medical waste, an alternative method involves safely storing it underground in specially designed containers. This approach minimizes the risk of releasing hazardous chemicals into the air and reduces the potential for environmental contamination.
A. Incinerate the waste in areas with low populations: Locating medical waste incinerators in remote or sparsely populated areas can help minimize the exposure of nearby communities to hazardous emissions. This approach ensures that the impact on public health is minimized while still addressing the waste management problem.
C. Reduce the number of medical procedures performed: Implementing strategies to reduce unnecessary medical procedures, optimizing healthcare practices, and promoting preventive measures can effectively reduce the overall volume of medical waste generated. This approach not only mitigates the waste management issue but also has broader benefits in terms of healthcare efficiency and cost-effectiveness.
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What is photosynthesis
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Answer:
The definition of photosynthesis is
a chemical process that occurs in plants, algae, and some types of bacteria, when they are exposed to sunlight.
Answer:
Is the process where by the plant manufacture there own food in the presence of light
Which pieces of information are typically seen on a newspaper weather map?
isobars
isotherms
symbols for fronts
symbols for long-range predictions
Answers
Answer:
c
Explanation:
symbols for fronts
The pieces of information that are typically seen on a newspaper weather map are: symbols for fronts.
What is a weather map?
A weather map can be defined as a type of publication that is typically used to provide information about the average atmospheric condition of a geographical region over a specific period of time.
In Meteorology, symbols for fronts refer to the pieces of information that are typically seen on a newspaper weather map, which provide information on air masses.
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PLEASE HELP! Which of the following statements correctly describes the relationship between erosion and deposition?
A.
Erosion breaks rocks into pieces, and deposition moves the pieces.
B.
Deposition and erosion both involve the movement of small pieces of rock from one place to another.
C.
Erosion is the movement of small pieces of rock from one place to another, and deposition is when the rock settles in a new location.
D.
Deposition and erosion break rocks into smaller pieces, but the rocks remain in place.
2 / 14
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Answer:
B
Explanation:
thsey both move or break rocks
About of the body's energy needs at rest is supplied by fat.
a. 10 percent
O b. 25 percent
O c. 35 percent
O d. 60 percent
O e. 75 percent
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Hope this helps
Why no two siblings have the exactly the same combination of random fertilization
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Answer:
brothers and sisters don't look exactly alike because everyone (including parents) actually has two copies of most of their genes. And these copies can be different. Parents pass one of their two copies of each of their genes to their kids.
the upstairs in a house is usually warmer than downstairs.this is due to what type of heat transfer
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Heat transfer is the term used to describe the movement of heat (thermal energy) caused by temperature differences and the subsequent distribution and variations in temperature.
The generation, utilization, conversion, and exchange of thermal energy (heat) across physical systems is the subject of the thermal engineering field known as heat transfer.
Different heat transmission techniques, including thermal conduction, thermal convection, thermal radiation, and energy transfer by phase changes, are categorized.
To achieve heat transmission, engineers also take into account the advection of material containing various chemical species, whether hot or cold.
Thus, Heat transfer is the term used to describe the movement of heat (thermal energy) caused by temperature differences and the subsequent distribution and variations in temperature.
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The ________ provides structure and support to the cell.
lysosome
vacuole
mitochondria
cytoplasm
cytoskeleton
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Answer:
cytoskeleton.
Sorry if it’s a lot I just needed help with the worksheet thank you
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1. Metallic luster, does not scratch glass, shows cleavage and has a greasy feel. Mineral name - Galena
2. Nonmetallic luster, does scratch glass, shows cleavage, pink color. Mineral name - Potassium Feldspar
3. Nonmetallic luster, does scratch glass, shows cleavage, has cubic crystals, green color. Mineral name - calcite
4. Nonmetallic luster, softer than glass, breaks into flat sheets, black
color. Mineral name - Biotite
5. Metallic, scratches glass, breaks into uneven surfaces, black streak
color. Mineral name - pyroxene
6. Nonmetallic, doesn't scratch glass, shows cleavage, colorless streak and has cubic cleavage. Mineral name - halite
7. Bubbles in acid, colorless streak. Mineral name - Calcite
8. Nonmetallic, scratches glass, shows fracture and has a red color. Mineral name - Magnetite
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Invasive species are among the leading threats to native wildlife. Learn about how they spread and how they threaten native wildlife in the United States.
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Answer:
By degrading, destroying, or displacing native habitats, invasive species compete with our native wildlife for food, water, shelter, and space, and thus threaten the health and well-being of our fish, wildlife, and plants.
Explanation:
How does the current affect plankton and nekton life?
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Answer:
Advection by ocean currents modifies phytoplankton size structure at small scales (1–10 cm) by aggregating cells in different regions of the flow depending on their size. This effect is caused by the inertia of the cells relative to the displaced fluid
what does solid and gas have in common
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Answer:
Solid, liquid, and gas all have volume and shape.
Explanation:
Here ya go, I hope this helps zoey
Answers
Answer: hey CC text me on Quora
Explanation:
FILL IN THE BLANK WITH THE WORD THAT CORRESPONDS TO THE CONDITION
DESCRIBED.
_____26. A dusky bluish color to the skin.
_____27. Skin condition in which whitish patches appear due to lack of
melanin production and loss of melanocytes.
_____28. Reddened color to the skin, indicating increased blood flow.
_____29. A genetic condition in which melanin is not produced in skin,
hair and eyes.
_____30. A yellowish color to the skin, often associated with liver disease
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The correct matches to the appropriate skin conditions are:
Cyanosis: A dusky bluish color to the skin.Vitiligo - Skin condition in which whitish patches appear due to lack ofmelanin production and loss of melanocytes. Erythema - Reddened color to the skin, indicating increased blood flow.Albinism - A genetic condition in which melanin is not produced in skin,hair and eyes.Jaundice - A yellowish color to the skin, often associated with liver diseaseWhat are some medical conditions of the skin?Skin conditions are those conditions whose signs and symptoms appear on the skin.
The skin is the largest organ in the body which provides an outer covering to other internal organs in the body.
Skin conditions which affect the skin are readily observed and may be indicative of underlying problems in the internal organs.
Some skin condition include;
Cyanosis: A dusky bluish color to the skin.
Vitiligo - Skin condition in which whitish patches appear due to lack of
melanin production and loss of melanocytes.
Erythema - Reddened color to the skin, indicating increased blood flow.
Albinism - A genetic condition in which melanin is not produced in skin,
hair and eyes.
Jaundice - A yellowish color to the skin, often associated with liver disease
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1. Complete the table to summarize the inputs and outputs of matter and energy that are shown in your models of photosynthesis and cellular respiration. Some of the data have been filled in for you. (7 points)
Photosynthesis
Cellular respiration
Inputs
Outputs
Inputs
Outputs
Number of C atoms
6
Number of H atoms
12
Number of O atoms
18
Energy-carrying molecules
1 adenosine triphosphate (ATP) molecule
Type of energy
Light energy
Answers
Photosynthesis:
Inputs Outputs
Number of C atoms 6
Number of H atoms 12
Number of O atoms 18
Energy-carrying molecules Light energy
Cellular respiration:
Inputs Outputs
Number of C atoms 6
Number of H atoms 12
Number of O atoms 6
Energy-carrying molecules Adenosine triphosphate (ATP)
In photosynthesis, the inputs include 6 carbon (C) atoms, 12 hydrogen (H) atoms, and 18 oxygen (O) atoms. These atoms are obtained from carbon dioxide (\(CO_{2}\)) . Glucose \(C_{6} H_{12} O_{6}\), which contains 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms. Additionally, oxygen (O2) is released as a byproduct.In cellular respiration, the inputs are the same as the outputs of photosynthesis. This is because the products of photosynthesis, such as glucose and oxygen, serve as the inputs for cellular respiration. Glucose is broken down during cellular respiration to release energy. The process involves the consumption of 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms. The energy released is captured in the form of adenosine triphosphate (ATP), which is the energy-carrying molecule used by cells for various metabolic processes.For more such question on photosynthesis
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Which particles transfer energy to electrons when they interact with
chlorophyll?
OA Phosphate groups
OB. Water molecules
OC. Neutrons
D. Photons
SUBMIT
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Answer: D photons
Explanation: A photon of light energy travels until it reaches a molecule of chlorophyll. The photon causes an electron in the chlorophyll to become “excited.” The energy given to the electron allows it to break free from an atom of the chlorophyll molecule. ( I think this is the answer)
Webbed feet is a recessive trait in iguanas. The chart shows the prevalence of alleles for webbed feet over three generations. Analyze the data for evidence of evolution. Choose all the statements supported by the data.
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Answer:
A,C,D
Natural selection is occurring, Webbed feet became more common over time, There is a selective advantage for iguanas with webbed feet
Explanation: Did it on USA Test prep
The statements which is supported by the data include the
following:
Natural selection is occurring.Webbed feet became more common over time.There is a selective advantage for iguanas with webbed feet.What is Selective advantage?These are the traits which gives an organism better chances of
survival and reproduction when compared to others.
In the case of Iguanas, their webbed feet developed over time
as a result of natural selection occurring. This created a
selective advantage as it can swim and dwell in water.
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What can cause weathering but not erosion?
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Answer:
mass wasting or mass movement
abrasion
Explanation:
plss mark brainliest