Answer: speed
Explanation: speed of light is dirrerent in different mediums. Also wavelength changes but frequency remains same
HELP ASAP I WILL GIVE BRAINLIST! How many moles of Ca(OH)2 are present in 370.47 grams of Ca(OH)2? (5 points)
2
3
5
6
Answer:
c.5
Explanation:
moles= mass/molar mass
molar mass of Ca(OH)2=74.092gmol-1
moles=370.47/74.092
moles =5
Considering the definition of molar mass, 5 moles of Ca(OH)₂ are present in 370.47 grams of Ca(OH)₂.
Definition of molar massThe molar mass of substance is a property defined as its mass per unit quantity of substance, in other words, molar mass is the amount of mass that a substance contains in one mole.
The molar mass of a compound (also called Mass or Molecular Weight) is the sum of the molar mass of the elements that form it (whose value is found in the periodic table) multiplied by the number of times they appear in the compound.
Molar mass of Ca(OH)₂In this case, you know the molar mass of the elements is:
Ca= 40 g/mole
O= 16 g/mole
H= 1 g/mole
So, the molar mass of the compound Ca(OH)₂ is calculated as:
Ca(OH)₂= 40 g/mole + 2× (16 g/mole 1 g/mole)
Solving:
Ca(OH)₂= 74 g/mole
Moles of 370.47 grams of Ca(OH)₂Next, you can apply the following rule of three: If by definition of molar mass 74 grams of the compound are contained in 1 mole, 370.47 grams of the compound are contained in how many moles?
[tex]amount of moles=\frac{370.47 gramsx1 mole}{74 grams}[/tex]
amount of moles≅ 5 moles
Finally, 5 moles of Ca(OH)₂ are present in 370.47 grams of Ca(OH)₂.
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The structure composed of a sheet of simple squamous epithelial cells that's folded onto itself to form a double layer is a
Answer:
This question lacks options, the options are;
A. parietal layer.
B. serous membrane.
C. nuclear membrane.
D. mucous membrane.
The answer is B
Explanation:
The serous membrane is a covering membrane found in living systems. The serous membrane covers the surfaces of certain structures in the body such as heart, lungs etc. where they secrete lubricants that reduce friction during movement.
The structure of the serous membrane is composed of a sheet of simple squamous epithelial cells (secretes the lubricants) that folds onto itself to form a double layer. The layers are joined by a connective tissue.
A pulse of sugars labelled with a fluorescent dye is supplied to leaves of young plants. After a brief interval, tissue sections are obtained from the plant and examined under the fluorescence microscope. Tissues are scored for the presence of fluorescence and ranked from very high to low fluorescence. Which cells would contain the most fluorescence
A pulse of sugars labelled with a fluorescent dye is supplied to leaves of young plants. After a brief interval, tissue sections are obtained from the plant and examined under the fluorescence microscope. Tissues are scored for the presence of fluorescence and ranked from very high to low fluorescence. Which cells would contain the most fluorescence
a. xylem
b. companion cells
c. sieve elements
d. epidermis
Answer: b. companion cells
Explanation:
The xylem and phloem are the vascular tissues in plants. Their function is to transport water and sugars respectively to all the parts of the plant body. Xylem is only involved in water transport. Companion cells and sieve elements are the two components of the phloem. The companion cells are the storage house of sugars they have a role in movement of the sugars in and out of the sieve elements. They take up sugars via active transport by using their transmembrane proteins. The companion cells will show major fluorescence as these are the reservoir of sugars.
Compare salt marshes and mangrove forests and explain why mangrove forests are such critical habitats on high energy coasts.
Answer:
Explanation:Coastal wetlands in the southeastern U.S. provide many important ecosystem goods and services. In addition to supporting important fish and wildlife habitat, they maintain coastal fisheries, store carbon, improve water quality, protect coastlines, and provide recreational opportunities. In many ways, coastal wetlands are dynamic and resilient ecosystems; however, they are being subjected to tremendous environmental change at the regional (e.g., hydrologic alterations, nutrient enrichment) and global scale (e.g., climate change).
One aspect of global change that is expected to have a substantial impact on coastal wetlands is winter climate change. Salt marshes and mangrove forests are common coastal wetland ecosystem types that occupy similar estuarine environments but have different climatic tolerances. In warmer climates, mangrove trees often outcompete salt marsh grasses. However, mangrove forests are sensitive to freezing temperatures, and within the region, mangrove forests are currently found only in Florida, Louisiana, and Texas (though isolated individuals have been reported in Mississippi). Salt marshes are more dominant along colder coastlines where mangroves are not able to survive freeze events. Future climate change is expected to result in increased winter temperatures and, potentially, reductions in the intensity of freeze events which could lead to mangrove forest replacement of salt marsh in parts of the Gulf of Mexico and southeastern Atlantic coast.
From a functional perspective, salt marsh grasses and mangrove trees are foundation species that control ecosystem dynamics and, in stressful and highly dynamic environments, provide the structural properties needed by other species; hence, the ecological and conservation implications of grass-to-tree conversions in coastal wetlands could be large (in both positive and negative ways). Dr. Mike Osland, USGS Research Ecologist and GCPO LCC staffer, along with 4 collaborating scientists, has initiated a study that addresses the following question: how might winter climate change impact the distribution and abundance of salt marshes and mangrove forests in the southeastern U.S.?
Their results begin to illustrate the vulnerability of salt marshes in the southeastern U.S. to mangrove forest expansion and quantify the amount of salt marsh habitat within each state that could be impacted by mangrove forest expansion under various winter climate change scenarios. The preliminary results are striking in terms of the potential for mangrove forest range expansion and coastal marsh displacement in the region. The hope is that these analyses stimulate additional discussion, research, and planning regarding the potential ecological and conservation implications of winter climate change for coastal wetlands in the southeastern U.S.
Answer:
Salt marshes are coastal wetlands found throughout the world on protected shorelines and on the edges of estuaries where freshwater mixes with seawater.
Mangrove forests are those which contain Mangroves which are trees and shrubs that grow in saline (brackish) coastal habitats in the tropics and subtropics.
Explanation:
The disorder known as cystic fibrosis (CF) is inherited in a recessive autosomal manner. In populations of Northern European descent, the frequency of people with CF is about 1 in 2,500. Assuming Hardy-Weinberg equilibrium for this disorder, answer the following: A. Assuming Hardy-Weinberg equilibrium, what percentage of people in the population would be expected to be heterozygous carriers
Answer:
The correct answer is -
A. 3.9% people in the population would be expected to be heterozygous carriers
Explanation:
The genotype frequency for the CF affected is 1/2,500,
= 1/2500
= 0.004. This is equal to q^2
here q = frequency of recessive alleles combination or CF people. (H-W equation => p^2+q^2+2pq=1)
The allele frequency is the square root of q^2 value, which equals 0.02. The frequency of the dominant allele or p would be
1 - 0.02 = 0.98 (p+q = 1)
The frequency for the CF combinantion =0.004
the dominant or unaffected people genotype
= (098)^2
= 0.96;
and for the heterozygote, it is
= 2pq
=2(0.98)(0.02)
= 0.039 or 3.9%
If you were appointed to a senior position, what would you do first?
Explanation:
I will study my responsibility.I will work as a guardian to the juniors and fulfill the tasks I am accompanied with.I will try my best to satisfy everyone.I won't give any kind of disappointment to anyone regarding my work and performance.
Describe how climate change will impact the human population.
*5 sentences or more*
Answer:
the answer is in the picture.
Answer: Climate change will likely increase the frequency and strength of extreme events (such as floods, droughts, and storms) that threaten human health and safety. Climate changes may expose more people to diseases. Some groups of people (e.g., the very young and the very old) are especially vulnerable to health impacts. First, older people are physically more vulnerable to extreme heat, so population aging could exacerbate increases in heat-stress mortality brought on by climate change. Higher temperatures also exacerbate outdoor air pollution such as ozone, which also disproportionately affects older people. Human health is vulnerable to climate change. The changing environment is expected to cause more heat stress, an increase in waterborne diseases, poor air quality, and diseases transmitted by insects and rodents. Extreme weather events can compound many of these health threats. Climate affects population distribution both directly as well as indirectly through its effects on soil, vegetation and agriculture that have direct bearings on the pattern of population distribution. ... This explains a high density in the tropics, which are otherwise marked with extremes of climatic conditions.
Explanation:
What are the four kinds of acid precipitation ?
PLEASE HELP !! ILL GIVE 40 POINTS ; PLUS BRAINLIEST !! DONT SKIP ANSWER.
Whether there is a net flow of fluid into or out of a capillary at a given spot along its length depends on _____.whether or not the fluid contains carbon dioxide whether or not the fluid contains oxygen whether the fluid contains nutrients or wastesthe balance between blood pressure and osmotic pressurethe needs of the tissue
Answer: Depends on the balance between blood pressure and osmotic pressure.
Explanation:
The capillaries are part of the microcirculation that transports nutrients to the tissues and removes cell excreta. The walls of the capillaries are extremely thin, constructed of single - layer, highly permeable endothelial cells. Therefore, water, cell nutrients and cell excreta can all interchange quickly and easily between the tissues and the circulating blood.
The tissues of the body is made up of soo many capillaries which helps to deliver blood and it's contents to it. The hydrostatic pressure in the capillaries tends to force fluid and it's dissolved substances through the capillary pores into the interstitial spaces. Conversely, osmotic pressure caused by the plasma proteins( called COLLOID OSMOTIC PRESSURE) tends to cause fluid movement by osmosis from the interstitial spaces into the blood. This osmotic pressure excreted by the plasma proteins normally prevents significant loss of fluid volume from the blood into the interstitial spaces.
Therefore, a balance between hydrostatic pressure in the capillaries which is influenced by blood pressure and osmotic pressure in order for a net flow of fluid into or out of a capillary to occur.
The Hawaiian honeycreeper bird has a mutualistic relationship with the Hawaiian silversword plants. The Hawaiian silversword plants have been widely destroyed due to human development in the area
Which of the following explanations BEST predicts how human development will affect the Hawaiian honeycreeper bird population?
Answer:
The Hawaiian honeycreeper bird population will decrease because they rely on the Hawaiian silversword plants for survival.
Explanation:
The destruction of Hawaiian silversword plants due to human development hurts the Hawaiian honeycreeper bird population as the bird exists in a mutual relationship with the plants.
What is the relationship between Hawaiian silversword plants and honeycreeper birds?Hawaiian honeycreeper bird has a mutual relationship with Hawaiian silversword plants, where the bird feeds on the plant's nectar and pollinates the flowers. If the plant population decreases, it will result in a reduced food supply for the bird which decreases their population size.
Loss of the silversword plants also destroys their habitat which can impact their population. Therefore, human development results in a decrease in the Hawaiian honeycreeper bird population.
However, the loss of the honeycreeper bird population also affects the ecosystem as they play a very important role in seed dispersal and plant reproduction which reduces plant diversity and also negatively impact other species that depend on the Hawaiian silversword plants for food.
Therefore, the destruction of Hawaiian silversword plants hurts the Hawaiian honeycreeper bird population as the bird exists in a mutual relationship with the plants.
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I will give BRAINLY please help
Answer:
A
Explanation:
It makes the most sense! if it is correct please mark me brainly. if it is wrong tell me or report me!
True or False - Deoxygenated blood is blue
Answer:
True beoxygenated blood is blue
A single codon is used to signal the beginning of protein synthesis. It is commonly called the START CODON. Locate the start codon on the chart. What are the three bases of this codon? ________
About the question:
You will find the chart in the attached files
Answer:
The strat codon is AUG
Explanation:
Genetic information for the aminoacids assembly during the protein synthesis is stored in short sequences of three nucleotides named codons in the mRNA. Each of the codons represents one of the 20 amino acids used to build the protein. The total number of possible codons is 64, from which 61 codify amino acids -more than one codon codify for the same amino acid-. One of these amino acids is also the start point of protein synthesis. And the left three codons are stopping translation points.
The codons indicating the initiation or stop points during the translation process are:
The start codon AUG is the most common sequence used by eukaryotic cells and places near the 5´extreme of the molecule. However, other codons might be used as well. Prokaryote cells might use the codons GUG or UUG. The end codons are UAA, UAG, UGA.Answer:
AUG
Explanation:
What are the three bases of this codon? AUG
Which part of the electromagnetic spectrum was used by Galileo when he looked through a telescope and saw light from the stars with his eyes?
O gamma radiation
radio waves
visible-light
0 X-rays
Answer:
visible
Explanation:
Explain the use of NBT
Answer:
The National Benchmark Tests (NBTs) are assessments for first-year applicants into higher education institutions. The NBTs were designed to measure a writer's ability to transfer understanding of Academic Literacy, Quantitative Literacy and Mathematics to the demands of tertiary coursework.
Hope this helps.
Answer: The National Benchmark Tests are assessments for first-year applicants into higher education institutions.
Explanation:
9.How does a hummingbird's beak help it to meet its basic needs?Lector inmersivo
(1 Punto)
The beak helps the bird to fly.
The beak allows the bird to swim fast.
The beak scares away predators.
The beak allows the bird to eat the nectar out of flowers.
Sally was exposed to hepatitis. Her doctor gave her an injection containing
antibodies to help her fight off the infection before her immune system had a chance
to kick in.
action
or
MAR is
tion
72411
active immunity - naturally acquired
active immunity - artificially acquired
passive immunity - naturally acquired
passive immunity - artificially acquired
Answer:
The correct answer is - passive immunity - artificially acquired.
Explanation:
Passive immunity is the immunity that involves giving or acquiring antibodies from other sources instead of developing them on one's own. This type of immunity can be natural and artificial. Mother breastfeed the babies, is the natural passive immunity example as milk also contain antibodies required for immunity of babies.
Artificial passive immunity is the immunity that comes from injecting the antibodies created in different animals or persons which called antiserum or vaccines such as snake antivenom.
A cat has 38 chromosomes. How many chromosomes would the cat’s sex cells have?
answers:
14, 19, 16, 0r 12
PLZ ANSWER QUICK AND CORRECTLY
Answer:
19
Explanation:
divide 38 by 2
Choose three characteristics of enhancers and silencers. Select the three correct statements. Select the three correct statements. Their orientation may be inverted without significant effect. They can act only at a little distance from the promoter. An enhancer can regulate many different genes, while a silencer regulates only one gene or group of closely related genes. They can regulate only one gene or group of closely related genes. They can act at a great distance from the promoter. They can regulate other genes when inserted. They can only act if they are placed downstream from the promoter.
Answer:
im sorry idfk
Explanation:
Storage polysaccharides, like starch and glycogen, often contain over a million glucose units. The energetic cost of synthesizing polysaccharides is high (about one high-energy phosphate bond per sugar residue added). Suppose that in a liver cell, the glucosyl residues in large numbers of glycogen molecules were replaced with an equivalent number of molecules of free glucose. What problems would this cause for the liver cell
Answer:
Glucose present as monomers within the cell will exert more osmotic pressure than a single glycogen molecule, resulting in endosmosis and the lysing of cells.
Also, the presence of free glucose molecules will result in increase in weight of the liver due to lack of efficient packing as in glycogen as well as the association ofnthe glucose molecules with water molecules.
Explanation:
Glycogen is a polysaccharide composed of glucose monomer units linked to Each other by α-1,4-glycosidic binds. α-1,6-branches arises at about every 10th glucose residue in the straight chain. Thus animals more glucose molecules to be stored within a much smaller space, thereby incresing the bulkiness of glycogen. Glycogen molecules are insoluble in the aqueous medium of the cell because it doesn't have enough free polar groups to participate in hydrogen bonding with water and are stored as granules and therefore do not affect the water potential or osmotic balance of the cell.
On the other hand, glucose molecules are highly soluble in water because it has many free polar -OH grours that form hydrogen bonds with water. If the glucosyl residues in large numbers of glycogen molecules were replaced with an equivalent number of molecules of free glucose, the free glucose will exert a high osmotic pressure inside the cell, causing the entry of water in the cell by endosmosis resulting in swelling and lysis ofnthe cell. Also, the space occupied by these free glucose units within the cell will be much larger than that of glycogen whichmenables efficient packing ofthe glucose molecules.
(((20 POINTS!!!)
The size of a population will increase when the number of births
A.
is the same as the number of deaths.
B.
is greater than the number of deaths.
C.
remains equal to the number of deaths.
D.
fluctuates up and then down.
PLEASEEE HELPPPP!!!!!!!
Answer:
D
Explanation:
what is the final step in the water cycle?
Answer:
The funny thing is that the water that falls from the sky as rain today, might have fallen last week, last month, last year or thousands of years ago. It is the greatest recycler of all time! There are four main stages in the water cycle. They are evaporation, condensation, precipitation and collection.
Which component of milk causes caramelization when heated?
Answer:
i think its carbohydrates
Explanation:
As the carbohydrates are heated, the molecules break down and reform into compounds with a characteristic brown colour and flavour.
hope this helps
The component of milk that causes caramelization when heated is lactose, as it is a disaccharide sugar that is present inside milk and consists of monosaccharides such as galactose and lactoses.
During the caramelization process in milk, heat causes the lactose molecules to undergo thermal decomposition due to the heat, resulting in the formation of various compounds, such as caramelan, caramelene, and carameline, etc. These compounds are the major factors for browning and flavor development of milk when it is heated. At a high temperature, the caramelization process is done.
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Self-portraits can help you learn about positioning people in a photograph.
True
False
A camera's self-timer takes a picture after a certain amount of time has passed.
True
False
1.) True
The reason this is true is because adjusting the camera allows you to get an understanding of how someone else should look or how they would likely look best when photographed. It also gives an understanding of how a camera should be aimed to get the best result.
2.) True
While many cameras have this feature, most are configured to only use this feature when the photographer selects it. This feature allows the photographer to adjust the camera in case they feel something isn't quite right with it, and it also allows them to get into the picture themselves if they feel they want to.
Hope this helps you, and have fun with whatever it is you are doing with your camera.
-Sayonara
Answer:
it is true for a and true for b. (aka a is question and b is question 2.)
Explanation:
Is this bird
A. Feeding
B. Photosynthesizing
C. Digesting
D. Respiring
Answer:
c
Explanation:
stions
sc2bs13h.Ch07.05
A motor unit is a motor neuron (nerve cell) plus
of the muscle fibers it stimulates.
a. one-half
b. one-third
C. three-fourths
d. all
Answer:
D or A I think it might be D but maybe A
Which of the following is an example of an environmental impact of agriculture?
A major cause of deforestation and other ecological damage that destroys habitats and biodiversity is agricultural growth.
Thus, Lowland forests in Indonesia being replaced by oil palm plantations, and the Cerrado and Atlantic Forests in Brazil and Paraguay are harmed by soy farming.
Extreme erosion is caused by logging and farming methods that are not sustainable. Half of all agricultural topsoil has been lost during the previous 150 years.
In many nations, agriculture is the main cause of pollution. Pesticides, fertilizers, and other harmful agricultural chemicals have the potential to contaminate fresh water, marine habitats, air, and soil. They may also linger in the environment for many years.
Thus, A major cause of deforestation and other ecological damage that destroys habitats and biodiversity is agricultural growth.
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Darwin observed that finches’ _______ were specialized according to their unique environments.
Answer:
beaks
Explanation: