Answers
The arm-like strucures of melanocytes are called dendrites, and they exert the function to transfer pigment granules to epidermal cells in the surroundings.
Related Questions
5. Besides being part of the composition of bone, why else do mammals need calcium?
Answers
Answer:
It's important for the contracting muscle
Explanation:
Besides being part of the composition of bones, calcium is needed by mammals for the following processes:
Formation of skeletons and teeth.Muscle contraction.Regulation of normal heart rate and nerve functions. Blood clotting. What is Calcium in living organisms?Calcium in living organisms may be defined as an important nutrient that all living organisms require, including humans in order to develop various organs like teeth and bones as well as for metabolic processes.
Apart from being part of the composition of bones, calcium is also required for the proper development of teeth and skeletons. The movement of calcium ions plays an essential role in the contraction of muscles.
The influx of calcium ions into the cells of the heart significantly enhances the heart rate of an individual in the range of 1.6 to 14.10 mm.
It also plays a critical role in blood clotting.
Therefore, it is well described above.
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Which of the following best describes high G+C bacteria
a.) Gram-negative bacteria that include spirochetes, planctomycetes, and the CFB group
b.) A gram-positive group that includes Bacilli
c.) Gram-negative bacteria that include a large group composed of five classes of bacteria
d.) A gram-positive group that includes the Actinobacteria
Answers
Answer:
d.) A gram-positive group that includes the Actinobacteria
Explanation:
The best description of high G+C bacteria is option d) A gram-positive group that includes the Actinobacteria.
High G+C bacteria, also known as high guanine-cytosine bacteria, refer to a group of bacteria characterized by a high proportion of guanine (G) and cytosine (C) nucleotide bases in their DNA. This characteristic can be determined by analyzing the DNA composition of bacteria.
Option d) states that high G+C bacteria belong to a gram-positive group that includes the Actinobacteria. This is the most accurate description of high G+C bacteria. Actinobacteria are a phylum of gram-positive bacteria, known for their high G+C content. They are characterized by their filamentous growth and the formation of branching networks of hyphae, similar to fungi. Actinobacteria include a diverse range of organisms, such as the genus Streptomyces, which produce many antibiotics, and Mycobacterium, which includes the species responsible for tuberculosis and leprosy.
Options a), b), and c) are not accurate descriptions of high G+C bacteria. Option a) mentions gram-negative bacteria and includes spirochetes, planctomycetes, and the CFB (Cytophaga-Flavobacterium-Bacteroides) group, which are not specifically associated with high G+C content. Option b) refers to a gram-positive group that includes the Bacilli, which generally do not have a high G+C content. Option c) mentions gram-negative bacteria composed of five classes, but it does not specifically address high G+C content.
Therefore, option d) is the most accurate description of high G+C bacteria, as it correctly identifies them as a gram-positive group that includes the Actinobacteria.
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A parachute uses __ to slow down.
A. Gravity
B. Air Resistance
C. Tension
Answers
Answer:
B. Air Resistance
Explanation:
What might happen to the allele frequencies if the number of hawks declined?
Answers
If the number of hawks declined, the allele frequencies in the hawk population would be affected. Specifically, alleles that contribute to traits that are advantageous for survival and reproduction in hawks would decrease in frequency, while alleles that are less advantageous would increase. This could lead to a decrease in genetic diversity and potentially reduce the overall fitness of the hawk population.
photosynthesis is a process that helps cycle matter through the environment
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Photosynthesis is a process that helps cycle matter through the environment, the statement is correct because in plants oxygen is released and carbon dioxide is absorbed.
More on PhotosynthesisThe process through which green plants and certain other organisms convert light energy into chemical energy is known as photosynthesis.
Light energy is collected and utilized by green plants during photosynthesis to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic molecules.
Photosynthesis produces oxygen and glucose by combining sunlight, carbon dioxide, and water.
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Drag and drop a term to match these examples with the correct level of organization.
Organ system: ?
Tissue: ?
Organ: ?
Answers
The terms with the appropriate examples in terms of organs, tissues, and organ systems are ;
Organ system - Circulatory system Organ - Heart Tissue - Cardiac muscle What are organs and organ systems ?Organs are structures in the body that perform specific functions and are composed of two or more types of tissue. Examples of organs include the heart, lungs, liver, kidneys, and brain.
Organ systems are groups of organs that work together to perform specific functions in the body. Examples of organ systems include the circulatory system, respiratory system, digestive system, nervous system, and endocrine system.
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Residual parent material refers to the *weathered rock* and *soil* that remains in its place of origin, while *transported parent material* is material that has been carried and deposited by natural agents such as water, wind, or glaciers.
The impact of these different types of parent material on *soil formation* can be significant. Residual parent material tends to contribute to the formation of soils with characteristics similar to the parent rock. The weathering process breaks down the rock into smaller particles, allowing for the development of soil horizons and the release of minerals that influence soil fertility. In contrast, transported parent material can introduce a diverse range of materials to a given area, leading to variations in soil composition, texture, and fertility. The transportation process can mix different types of sediment, resulting in the formation of heterogeneous soils with varying properties.
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Residual parent material is the rock and soil that is still located in its original location and is weathered. Transported parent material is material that is carried and deposited by natural agents such as water, wind, or glaciers. The effect of these different types of parent material on soil formation can be significant.
Residual parent material usually contributes to the development of soils with qualities similar to the parent rock. The breakdown of rock into smaller particles through weathering enables the formation of soil horizons and the release of minerals that influence soil fertility.
The physical and chemical characteristics of soils derived from this form of parent material are often similar and homogeneous, allowing for predictable fertility and properties. Transported parent material, on the other hand, can introduce a diverse range of materials to a given area, resulting in variations in soil composition, texture, and fertility.
The transportation process can blend different types of sediment, resulting in the formation of heterogeneous soils with different characteristics. Transported parent material can also be exposed to weathering processes, altering its original composition and resulting in soils with varying degrees of fertility.
While transported parent material can increase the diversity of soil properties in an area, it can also make it difficult to predict soil characteristics, particularly in areas where different types of sediment have been deposited. The relationship between parent material and soil development is complex, with both the initial characteristics of the material and the surrounding environment influencing soil properties.
In general, residual parent material contributes to the development of homogeneous soils with predictable properties, while transported parent material can result in more diverse and heterogeneous soils.
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What five intermolecular forces of attraction are important for tertiary structure?
Answers
Explanation:
for protein the force of attractions for tertiary structure are
(i) ionic bonds
(ii) hydrogen bonds
(iii) van der Waals forces and electrostatic bonds
(iv) disulphide linkages
(v) Hydrophobic Interactions.
Which of the solutions
indicates a higher
concentration of solutes than
contained inside the cell?
A. hypotonic
B. isotonic
C. hypertonic
Answers
Answer:
C.
Explanation:
A hypertonic solution will indicate that the concentration of solutes is higher than that inside the cell.
All questions are about the movie Lorenzo’s Oil:
What are fatty acids? Why are some fats called saturated and others are called unsaturated?
What kind of fatty acids is Lorenzo’s body unable to metabolize?
ALD is an X chromosome-linked (sex-linked) recessive disease. What is Michaela’s, Augusto’s, Aunt Dee’s and Lorenzo’s genotypes and phenotypes?
Describe the meaning of the paper clips Augusto used in the library.
What does Augusto’s dream reveal about the paper clips?
What does competitive inhibition mean?
Why did the Odones ask Aunt Dee to put the combination of oleic-erucic oils on her salad before giving it to Lorenzo?
What happens to both Aunt Dee’s and Lorenzo’s fatty acid blood levels after consuming oleic-erucic oils for a few days?
Answers
We can see here that fatty acids are molecules that are made up of a chain of carbon atoms and hydrogen atoms.
What is fatty acid?Saturated and unsaturated fatty acids can be distinguished. No double bonds exist in the chain of carbon atoms in saturated fatty acids. One or more double bonds exist between the chain's carbon atoms in unsaturated fatty acids.
Lorenzo's body is unable to metabolize very long chain fatty acids (VLCFAs).
ALD is an X chromosome-linked (sex-linked) recessive disease. Michaela, Augusto, Aunt Dee, and Lorenzo all have the same genotype. They all have one copy of the gene for ALD on their X chromosome.
The paper clips that Augusto used in the library represent the different pieces of information that he was trying to gather about ALD.
The paper clips were all twisted in Augusto's dream. This illustrates the intricacy of ALD and the challenge of developing a treatment.
A kind of inhibition called competitive inhibition occurs when two molecules contend with one another for the same binding site.
Before serving the salad to Lorenzo, the Odones asked Aunt Dee to dress it with the oleic-erucic oil mixture to ensure its safety.
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select all that apply. Which organisms are in competition for mangrove tree crabs?
a.) snook (fish)
b.) alligator
c.) ghost shrimp
d.)cuckoo(bird)
Answers
Organisms in competition for the mangrove tree crabs in a mangrove ecosystem;
alligatorcuckoo(bird)What is the mangrove?The mangrove is a swampy area that is filled with a lot of shrubs and is home to a large number of organisms. The feeding relationships in the mangrove also involve predator and prey relationships just as you have in other ecosystems.
The ecosystem is a self supporting system in which there is an exchange of materials and energy. We know that predation is a situation in which one organism feeds on another. This is an intricate part of the food chain in every ecosystem. The mangrove ecosystem is filed with a lot of these myriads of predator prey relationship in the ecosystem.
The following are the animals that are in competition for the mangrove tree crabs in a mangrove ecosystem;
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2. Explain how engineering advances have led to scientific discoveries about the moon.
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Answer:
Explain two ways that all youth can idenblases in the media
in which organ (crop or gizzard) did you find the contents to be most ground up and why?
Answers
The gizzard is the muscular organ located between the crop and the small intestine in birds. Its primary function is to mechanically grind and break down food, as birds do not have teeth to chew their food.
The gizzard accomplishes this through strong muscular contractions that crush and grind the food against small stones and grit that the bird has ingested.
Therefore, it is likely that the contents found in the gizzard would be more ground up compared to those found in the crop. The crop is a storage organ located at the base of the bird's neck that serves as a temporary holding place for food before it enters the digestive system. While the crop may soften and partially break down food through the secretion of digestive enzymes, it does not have the same mechanical grinding function as the gizzard.
In summary, the gizzard is the organ responsible for grinding and breaking down food in birds, while the crop primarily serves as a temporary storage organ. Therefore, the contents found in the gizzard are likely to be more ground up compared to those found in the crop.
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how many half-lives have lapsed to yield a sample with 125 atoms of C-14 and 375 atoms of N-14
Answers
2 half-lives have elapsed to yield 125 atom of the original sample
Half of the amount of the radioisotope present at any given time will undergo spontaneous disintegration during the succeeding 5730 years. In other words , after 5730 years ,only half of the original amount of 14 c remains in a sample of organic material . Imagine that you start out with 100 grams of carbon 14 . The half -life is the time it takes for half of given amount of isotope to decay .
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2. The change in position of an object because of a force___
(1 Point)
Motion
Speed
Mass
Velocity
Answers
Answer:
A motion
Because it is moving
3. How does the ozone layer help shield the Earth? O by allowing all of the UV light to pass through by causing some of the UV light to bounce back into space by rerouting some of the UV light, causing it to go around our planet O by absorbing some of the UV light that harms living things
Answers
Answer:
When an ozone molecule absorbs UV-B, it comes apart into an oxygen molecule (O2) and a separate oxygen atom (O). Later, the two components can reform the ozone molecule (O3). By absorbing UV-B in the stratosphere, the ozone layer prevents harmful levels of this radiation from reaching Earth's surface.
Explanation:
Answer:
The last answer. By absorbing some of the UV light that harms living things.
Explanation:
As the harmful UV light heads for earth, the Ozone Layer absorbs a great amount of the harmful UV radiation that comes from the sun, and If it weren't for the Ozone Layer, we would probably all be practically blind from the radiation hitting our eyes.
-Hope this helped & Happy Holidays!
Consider your knowledge about the plasma membrane and select all of the true statements. Check All That Apply Steroid molecules in membranes help modify membrane fluidity.Steroid molecules in membranes help modify membrane fluidity. Phospholipids give membranes their fluidity, and an individual phospholipid can move sideways in the membrane.Phospholipids give membranes their fluidity, and an individual phospholipid can move sideways in the membrane. The mosaic property of membranes is due to the variety of lipid types embedded in the membrane.The mosaic property of membranes is due to the variety of lipid types embedded in the membrane. The two sides of a membrane are identical.The two sides of a membrane are identical. Proteins within the plasma membrane can shift positions, even if they are anchored to the cytoskeleton.
Answers
The true statement about the plasma membrane include the following:
Steroid molecules in membranes help modify membrane fluidityPhospholipids give membranes their fluidity, and an individual phospholipid can move sideways in the membrane.Proteins within the plasma membrane can shift positions, even if they are anchored to the cytoskeleton.What is Plasma membrane?This is also known as cell membrane which offer protection to cells by separation of the interior from the external environment.
The plasma membrane have the following correct functions which are listed above.
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Answer:
Steroid molecules in membranes help modify membrane fluidity. Steroid molecules in membranes help modify membrane fluidity. Correct
Phospholipids give membranes their fluidity, and an individual phospholipid can move sideways in the membrane. Phospholipids give membranes their fluidity, and an individual phospholipid can move sideways in the membrane. Correct
The mosaic property of membranes is due to the variety of lipid types embedded in the membrane. The mosaic property of membranes is due to the variety of lipid types embedded in the membrane. Correct
The two sides of a membrane are identical.
Explanation:
Please help with this diagram
Answers
Animal
1. Cell Membrane
2.Cytoplasm
3. Rough ER
4. Nucleolus
5.Smooth ER
6.Nucleus
7.Ribosomes
8. Vacuole
9.Golgi Apparatus
10.Mitochondria
Plant
1.Cell Wall
2.Cytoplasm
3. Cell Membrane
4. Central Vacuole
5. Rough ER
6. Nucleolus
7.Smooth ER
8.Nucleus
9. Ribosomes
10. Chloroplast
11. Golgi Body
12.Mitochondria
Which is an example of how Human activity can cause long-term changes to environments that affect organisms?
Answers
Overpopulation, pollution, the burning of fossil fuels, and deforestation are just a few of the ways that humans have an influence on the physical environment. These kinds of modifications have led to climatic changes, soil erosion, poor air quality, and groundwater pollution.
This is further explained below.
What is the environment?Generally, All living and non-living objects that occur naturally, or in this example, without the use of artificial means, are included in the natural environment or natural world.
Typically, the Earth or certain portions of the Earth are referenced by the phrase.
In conclusion, Humans have an impact on the physical environment in a number of ways, including overpopulation, pollution, the burning of fossil fuels, and deforestation.
Climate change, land erosion, poor air quality, and groundwater contamination are all results of these alterations.
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What is not likely to appear on a map
Answers
The Horizon is not likely to appear on a map.
Explanation:The ones not likely to appear on a map are satellites. The longitude indicates the distance sideways or east to west of the Prime meridian and is very helpful in determining the location of a place. This is also true for the cardinal directions and the poles.
Why do fish have gills?
1.to absorb nutrients from the water into the digestive system
2.to absorb oxygen from the water into the bloodstream
3.to take in oxygen and transport it to the lungs
4.to regulate body temperature
Which one is it!
Answers
Answer:
Fish have gills in order to extract oxygen from the water and absorb it into their bloodstream. This allows them to breathe underwater, as opposed to mammals like humans who require air to breathe. states that "gills require a huge amount of water to provide the necessary gas exchange. The gills also pass carbon dioxide into the water in the same way as lungs breathe it out into the air. As the water passes over the gills, the blood in the fish absorbs oxygen from the water."
Option 2, "to absorb oxygen from the water into the bloodstream," is the correct answer. Gills do not absorb nutrients from the water into the digestive system (option 1), transport oxygen to the lungs (option 3), or regulate body temperature (option 4). also mention that gills are used by fish to expel nitrogenous waste and regulate the pH or acidity in their bodies, but the primary function of gills is to extract oxygen from the water and absorb it into the bloodstream.
Explanation:
Normal diastolic pressure for a healthy adult falls between
A. 80 and 90
B. 90 and 120
C. 120 and 130
D. 60 and 80
Answers
Answer:
D
Explanation:
Less than 80 is an ideal diastolic pressure more is unhealthy and dangerous.
6. In what ways did Americans at home contribute to the war effort? *
O
rationing goods
O working in war-related industries
O buying war bonds
O all of the above
Answers
Answer:
All of the above
Explanation:
Americans rationed goods at home in order to provide more food for the soldiers in the war. Americans also worked in factories that produced many of the goods needed in the war (like guns, ammunition, etc). Americans also bought war bonds to give more money to the army.
Determine the order of genes along a chromosome based on the following recombinationfrequencies: AB, 8 map units; AC, 28 map units; AD, 25 map units; BC, 20 map units; BD, 33 map unitsA. A-C-D-BB. C-D-B-AC. D-A-B-CD. B-A-C-D
Answers
the order of genes along a chromosome based on the following recombination frequencies: AB, 8 map units; AC, 28 map units; AD, 25 map units; BC, 20 map units; BD, 33 map units c . C. D-A-B-C
Recombination frequency is defined as the frequency of a single chromosomal crossover between two genes during meiosis.
The recombination frequency, which evaluates the genetic linkage used to produce a genetic linkage map, determines the order of entrance for each gene.
Recombination frequency is a heritable trait that could be altered by a few genes.
The frequency of recombination between any two genes in every organism has a numerical value, and this value must be between 0% and 50%.
Genes that are "unlinked" have a 50% recombination frequency and are found on different (non-homologous) chromosomes.
Genes that are relatively close to one another on the same chromosome are said to be "tightly connected" because their recombination frequency is almost zero.
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failing kidneys have a harder time excreting phosphate, and thus blood-phosphate levels tend to rise. what effect will rising blood-phosphate levels have on blood calcium
Answers
Answer: blood calcium levels fall in response to hperphosphatemia
Explanation:
Calcium is bound by the excess phosphate, and the calcium phosphate deposited around organs and in arteries (calcification).
A specific location in America produces electricity from fossil fuels and geothermal energy. The table below shows the amount of carbon dioxide in the atmosphere of the location from 1960 to 2000.
Year 1960 1970 1980 1990 2000
Carbon dioxide concentration (in parts per million by volume) 317 325 339 318 328
Based on the table, which of these conclusions is most likely correct?
In 1990, electricity was generated only from fossil fuels.
In 1980, electricity was generated only from geothermal energy.
Between 1960 and 1970, there was an decrease in the use of geothermal energy.
Between 1980 and 1990, there was a decrease in the use of geothermal energy and an increase in the use of fossil fuels.
Answers
According to questions in the years 1960 and 1970, the amount of geothermal and fossil fuels decreased because there is low emission of carbon dioxide during these years, hence option C is correct.
What are fossil fuels?Fossil fuels are a source of a nonrenewable form of energy generated by animals and plants which existed in the geological past.
The burning of fossil fuels generates carbon dioxide, so in the year between 1960 and 1970, there was a decrease in the use of geothermal energy.
Therefore, a low concentration of carbon dioxide indicates a decrease in the use of fossil fuels.
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Answer:
Ya tu m'a arnaké
Explanation:
Most scientists agree that life began on earth approximately 3.5 billion years ago. What would a scientist need to do in order to test this hypothesis and gather evidence?
A: Recreate the composition of the atmosphere and oceans on Earth as they were 4.5 billion years ago.
B: Travel to a similar planet or moon in its own early formation and recreate the chemical reactions which took place on Earth.
C: Gather the raw materials, such as inorganic compounds, on Earth 4.5 billion years ago and recreate the chemical reactions that could have taken place.
D: This is not a testable hypothesis since there is no way to travel back 4.5 billion years or to run the experiment for the next 4.5 billion years.
Answers
Answer:
A
Explanation:
Today, the atmosphere holds about 21 per cent oxygen. ... When the first simple organisms appeared in the oceans more than 3.5 billion years ago, the atmosphere was mostly nitrogen, hydrogen, water vapor, and carbon dioxide
Which governmental level usually administers permitting and regulation of land use?
Answers
Answer: Local Governments
Explanation:
Generally, local governments have a large degree of autonomy to control land use within their jurisdictions. States typically grant them the authority to pass ordinances and regulations as long as they do not conflict with other laws. Furthermore, all states give municipalities the power to enact zoning regulations. In 15 states, state legislation also requires municipalities to adopt a Comprehensive Plan. Similarly, in 8 states local governments are required to adopt Local Zoning Ordinances.
What is not true about parasite-host relationships? A. Both can be animals B. One can be a plant and the other an animal C. Both can be plants D. One must be an animals and the other one a plant
Answers
Answer:
one can be a plant and the other an animal
Can you help me pick out these two answers for the questions using the cladogram please will mark brainlist and my AI can’t answer this question pleaseeee
Answers
The amniotic egg is a trait that separates amphibians from primates. The trait that separates rabbits and primates from crocodiles is eggs with shells. Rabbits and primates are mammals while crocodiles are reptiles.
The Amphibians are cold-blooded animals that spend part of their lives on land and some part in water. The primates on the other hand are warm-blooded animals and they produce milk(mammals). Species of monkeys, apes, and lemurs are some of the examples of primates.
The trait that is common in primates and rabbits is the presence of hair. The crocodiles on the other hand are different from them as they lay hard-shelled eggs which protect the inner portion of the egg and also allow gaseous exchange.
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