Answer:
b lake your welcome
Explanation:
because lakes have trees that create the fresh water for the fishes to swim in i think?
An example of a freshwater wetland body is a lake. Thus, the correct option is B.
What is a lake?A freshwater wetland is a waterbody which is supplied with water from all the nearby streams and rivers. Freshwater wetlands are the ecosystems which are affected by the permanent or temporary inundation.
A lake is a naturally occurring, relatively very large body of water which is localized in a basin that is surrounded by land, with much slower-moving flow than that of any inflow or outflow streams that serve to feed or drain the lake. Lakes lie completely on the lands and are separate from that of the ocean, however like the much larger oceans, they also form a part of the Earth's water cycle by serving as many large standing water reservoirs as possible. Most of the lakes are freshwater, however some are salt lakes with salinities even higher than that of the seawater.
Therefore, the correct option is B.
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Consider a small spherical molecule of radius 0.2 nm.
Part A) At 298 K, what is the average time required for such a molecule to diffuse across a phospholipid bilayer 4 nm thick? The viscosity of the bilayer interior is about 0.01 Pas.
Part B) At a constant temperature, the average time to diffuse across a bilayer hydrophobic interior depends only on the radius of the diffusing molecule. Hence, all molecules with the same size will cross in the same time. However, it is well known that for the same concentration gradient the flux of nonpolar molecules across bilayers is much greater than that for polar molecules of the same size. Are these statements contradictory? (yes or no)
Part A) The average time required for a small spherical molecule to diffuse across a phospholipid bilayer can be calculated using the Stokes-Einstein equation:
t = 6πηrL^2/kT
where t is the average time, η is the viscosity of the bilayer interior, r is the radius of the molecule, L is the thickness of the bilayer, k is the Boltzmann constant, and T is the temperature in Kelvin. Plugging in the given values:
t = 6π(0.01)(0.2)(4)^2/(1.38×10^-23)(298)
t = 2.24×10^-9 seconds
Part B) No, these statements are not contradictory. While the average time to diffuse across a bilayer hydrophobic interior depends only on the radius of the diffusing molecule, the flux of nonpolar molecules across bilayers is much greater than that for polar molecules of the same size due to the difference in their solubility in the hydrophobic interior. Nonpolar molecules are more soluble in the hydrophobic interior and therefore can diffuse more easily, leading to a greater flux.
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How do the frequencies of the waves compare?
Wave A has a higher frequency because it has a larger amplitude.
Wave A has a lower frequency because it has a longer wavelength.
The waves have the same frequency because they have the same wavelength.
The waves have the same frequency because they have the same amplitude.
Answer:
The waves have the same frequency because they have the same amplitude.
which of the following is not a method used in dendrochronology to determine how old a tree ring is? identifying the type of fossilized bacteria found in the rings counting rings to count years radiocarbon dating, using radioactive isotopes crossdating by comparing rings between different trees
Cross-dating is the most fundamental guideline of dendrochronology. Cross-dating is a procedure that guarantees every individual tree ring is relegated to its definite year of development.
This is achieved by matching examples of wide and restricted rings between centers from a similar tree, and between trees from various areas.
Dendrochronology is a dating procedure that takes advantage of the yearly development augmentations of trees to give an exact gauge of the age (or period since arrangement) of a wood test. New cells, framing a ring, are added to the external piece of a tree trunk during each developing season.
Dendrochronology, additionally called tree-ring dating, is the logical discipline worried about dating and deciphering previous occasions, especially paleoclimates and climatic patterns, in light of the examination of tree rings.
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which cells of the highlighted structure produce pancreatic juices? hepatocytes alpha beta acinar
The correct answer is option D.
The cells of the highlighted structure that produce pancreatic juices are Acinar cells.
Acinar cells are the cells of the pancreas that secrete pancreatic juice which contains enzymes required for the digestion of carbohydrates, proteins, and fats.
What is the pancreas?
The pancreas is an organ that is located behind the stomach. It has an endocrine function because it releases hormones directly into the bloodstream. Insulin and glucagon are the two main hormones that the pancreas produces that help regulate blood sugar levels.
The pancreas also has an exocrine function, which means it secretes digestive enzymes into the small intestine to help digest food. The cells that secrete pancreatic juice are called acinar cells, which are found in the pancreas.
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PLEASE HELP Calculate the volume of the block using the formula
Answer:
21.553125
Explanation:
You can round to whatever you feel, but this is the answer when you multiply 2.75 x 2.75 x 2.85
:D
Which best describes what Shah is doing? replication repetition both repetition and replication neither repetition nor replication
Answer:
This question is incomplete. The complete part of the question is as follows:
Shah did not trust the results of an experiment that she had read about, so she is conducting the experiment herself. She goes through the same set of steps and measures the effect of the amount of sugar on a single organism.
Which best describes what Shah is doing?
The answer is A. Replication
Explanation:
In an experiment, replication is the process of repeating an experiment that was formerly conducted by another experimenter in order to ensure accuracy. Note that, an experiment is 'replicated' under the same conditions as it was conducted previously.
This is the case in this question involving Shah who conducted an experiment herself because she didn't trust the results of the experiment she read about. She conducted an experiment that has already been conducted by another experiment, hence, it is a REPLICATION.
HELP ASAP!!!!!
Which of the following is an organization whose main goal is to review scientific
literature and provide reports about climate change?
B. Carbon Capture and Storage
C. Intergovernmental Panel on Climate Change
D. Kyoto Protocol
Answer:
C Intergovernmental Panel on Climate Change
Explanation:
The Intergovernmental Panel on Climate Change (IPCC) is an intergovernmental body of the United Nations that is dedicated to providing the world with objective, scientific information relevant to understanding the scientific basis of the risk of human-induced climate change
-Wikipedia
Climate change refers to alterations in weather patterns. The Intergovernmental Panel on Climate Change. looks into reports about climate change.
What is climate change?The term climate change has to do with the alterations in the weather patterns that begins to appear over time. Climate chnage has been a recent subject of scientific study.
One scientific organization whose major aim is to review scientific literature and provide reports about climate change is Intergovernmental Panel on Climate Change.
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explain how gaba a subunit composition influences affinity and binding specificity for various agonists
The subunit composition of GABA receptors affects their affinity and binding specificity for various agonists. Different subunits have different binding sites, so the combination of subunits in a GABA receptor determines its affinity and binding specificity for various agonists. As a result, GABA receptors with different subunit compositions have different affinities and specificities for various agonists.
The subunit composition of GABA (gamma-Aminobutyric acid) receptors affects their affinity and binding specificity for various agonists. GABA is a neurotransmitter, meaning it can act as a chemical messenger between nerve cells. GABA receptors are located on the surfaces of cells, and when activated, they open ion channels and reduce the excitability of the cell. The composition of the subunit that makes up a GABA receptor determines its affinity and specificity for various agonists.
GABA receptors can have different subunit compositions, meaning different GABA receptors have different affinities and specificities for various agonists. For example, the GABAA receptor is composed of two alpha, two beta, and one gamma subunits. Each subunit has different binding sites, allowing for different binding of various agonists. This is why certain agonists will have higher or lower affinities for a given GABAA receptor. For example, the agonist pentobarbital has a higher affinity for a GABAA receptor with a gamma2 subunit than for a GABAA receptor with a gamma1 subunit.
The binding specificity of a GABAA receptor is determined by the combination of subunits. Different combinations of subunits can result in different binding sites, leading to different binding specificity of various agonists. Different subunits have different binding pockets that determine their specificities, so a GABAA receptor composed of two alpha, two beta, and one gamma subunits will have different binding specificity for various agonists than a GABAA receptor composed of two alpha, one beta, and two gamma subunits.
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you have just eaten a candy bar and your blood glucose levels are rising. this will activate which organ of the endocrine system?
As blood sugar levels rise, the pancreas produces insulin, a hormone that prompts cells to absorb blood sugar for energy or storage.
the pancreas the principle function of the pancreas is to preserve healthful blood sugar tiers. it is a large gland located in the back of the stomach. It produces insulin, glucagon, and different hormones. Diabetes occurs while the pancreas does not produce sufficient insulin or whilst the body does no longer use insulin properly (known as insulin resistance).
Glucagon is a hormone that your pancreas makes to help alter your blood glucose (sugar) ranges. Glucagon increases your blood sugar degree and forestalls it from losing too low, whereas insulin, every other hormone, decreases blood sugar levels.
The prevailing idea is that the overconsumption of high-fat and high-sugar foods reasons adjustments in muscle, fat, and liver cells that leads to a faded response from the pancreatic hormone insulin.
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the california current is a surface current that carries water south from polar regions, ANSWER THE QUESTION DOWN HERE! FAST! I WILL GIVE BRAINLIEST!
Answer:
B Winds moving east push the current towards the Western coast of the United states
Explanation:
The intensity of the California current is influenced by strong northwesterly winds. These winds predominantly blow along shore, which because of the earth's rotation causes water to be transported in an offshore direction.
oh and
D
the water cools and gets denser as it flows south, causing it to sink near the western coast of united states
What parts of our eyes help us see light?
Answer:
it's called the renting it controls the pupil
discuss the differences in alpha helix and beta sheet content between the three amylases. what do these differences signify?
Alpha helix and beta sheet are two types of secondary protein structures. The content of these structures can differ between proteins and can signify differences in protein function or stability.
The three amylases, alpha-amylase, beta-amylase, and gamma-amylase, differ in their content of alpha helix and beta sheet structures. Alpha-amylase has a high content of alpha helix and a low content of beta sheet, while beta-amylase has a high content of beta sheet and a low content of alpha helix. Gamma-amylase has a relatively equal content of both alpha helix and beta sheet structures.
These differences in secondary structure content can signify differences in protein function and stability. Alpha-amylase is involved in the hydrolysis of alpha-1,4 glycosidic bonds in carbohydrates and requires a highly flexible structure to accommodate substrates of varying sizes. The high content of alpha helix in alpha-amylase may contribute to its flexibility. Beta-amylase, on the other hand, is involved in the hydrolysis of beta-1,4 glycosidic bonds and requires a more rigid structure. The high content of beta sheet in beta-amylase may contribute to its rigidity and specificity for beta-1,4 glycosidic bonds. The relatively equal content of alpha helix and beta sheet structures in gamma-amylase may indicate a balance between flexibility and rigidity, allowing for the hydrolysis of both alpha-1,4 and beta-1,4 glycosidic bonds.
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why do many marine pollution experts consider oil to be among the least damaging pollutants introduced into the ocean?
Many marine pollution experts consider oil to be among the least damaging pollutants introduced into the ocean due to its relatively rapid degradation and the existence of natural processes that can help mitigate its impact.
While oil spills and discharges pose a significant threat to marine ecosystems, they are often considered less damaging compared to other pollutants for several reasons. Firstly, oil is a complex mixture of hydrocarbons that can undergo natural degradation processes, such as evaporation, dispersion, and biodegradation. These processes can help break down and reduce the concentration of oil in the water over time. Additionally, sunlight and wave action can further aid in the breakdown of oil, especially in warm and turbulent environments.
Furthermore, the ocean has natural mechanisms to cope with oil pollution. Microorganisms that specialize in breaking down hydrocarbons can consume oil and convert it into less harmful byproducts. In some cases, natural oil-eating bacteria can thrive and multiply in response to an oil spill, accelerating the degradation process. Additionally, physical factors like wave action, currents, and tides can help disperse and dilute oil, reducing its immediate impact on localized areas.
However, it is important to note that while oil may be considered less damaging compared to certain pollutants, it can still have severe consequences for marine ecosystems, especially in the short term. Oil spills can harm marine life, including fish, birds, and marine mammals, through direct contact, ingestion, and the destruction of habitats. The long-term impacts of oil pollution can also have cascading effects on food webs and ecosystems, which may take years or even decades to recover. Therefore, prevention, preparedness, and effective response measures remain crucial in minimizing the overall impact of oil pollution on the marine environment.
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In the hot summer, a reptile can burrow into a cool, damp surface so that it can lose heat through ___
since its skin is touching those surfaces.
A) conduction B) convention C) radiation
Answer:
A-Conduction
Explanation:
while searching for spiders at six sites, the scientists came across the following number of species: 2, 4, 8, 5, 3, 1 what do these numbers indicate?
The 2, 4, 8, 5, 3, and 1 obtained from spider hunting at six different sites can be associated with the number of species found. Therefore, these numbers signify the different numbers of spider species identified at six different sites.
The numbers are the result of the data collected by the researchers while searching for spiders at six different sites. The given numbers represent the following species found at each site:
Site 1 = 2 speciesSite 2 = 4 speciesSite 3 = 8 speciesSite 4 = 5 speciesSite 5 = 3 speciesSite 6 = 1 speciesTherefore, these numbers indicate the number of species present at each site visited by the scientists during their spider hunt.
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Which are the building blocks of carbohydrates?
amino acids
fatty acids
proteins
O glucose
Proteins are the building blocks of carbohydrates
the ovum is viable for _____ hours following ovulation.
The ovum is viable for 12-24 hours following ovulation.
Ovulation is the release of a mature egg from the ovary into the fallopian tube, where it can be fertilized by sperm. The egg is only viable for a short period of time, usually 12-24 hours, after being released during ovulation. If the egg is not fertilized during this time, it will disintegrate and be shed along with the uterine lining during menstruation. If the egg is fertilized, it will travel down the fallopian tube to the uterus, where it will implant in the uterine lining and develop into a fetus.
Sperm, on the other hand, can survive in the female reproductive tract for up to 5-7 days, increasing the overall window of fertility for conception to occur.
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Which is not an example of matter and energy cycling through living things?
A. Grass giving off oxygen
B. Grass growing
C. A rock resting on the ground
a
D. Cows eating grass
Answer:
c the rock resting on the ground
Explanation:
grass gives energy through oxygen and to cows through consumption and uses energy to grow
Which point has the highest elevation?
Answer:
point b
Explanation:
Answer:
A
it's small and in the middle so it's a
What would most likely happen if the power lines in a petroleum power plant were broken? the petroleum would not burn. steam would not be produced. customers would not receive electricity. energy would not be converted.
The answer is Customers would not receive electricity as the power lines in a petroleum power plant were broken.
How do petroleum power plants produce electricity?
Fossil fuel power plants burn coal or oil to create heat which is in turn used to generate steam to drive turbines that generate electricity.
Thus, Customers would not receive electricity.
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The name of the "currency" cells use for
energy is ...
A. RNA.
B. Protein.
C. ATP.
Which RNA is directly responsible for catalyzing the peptide bond between amino acids during translation
Ribosomal RNA (rRNA) is directly responsible for catalyzing the peptide bond between amino acids during translation.
What are the two most common sources for rivers and streams?
Answer:The source of a river or stream may be a lake, a marsh, a spring, glacier, or a collection of headwaters. The furthest stream is called the headstream. Headwaters are small streams that create the river or stream and may be cool waters, because of shade and barely melted ice or rain.
Explanation:I did this in class 2 days ago LOL
Answer:
The source of a river or stream may be a lake, a marsh, a spring, glacier, or a collection of headwaters. The furthest stream is called the headstream. Headwaters are small streams that create the river or stream and may be cool waters, because of shade and barely melted ice or rain.
Explanation:
Hope this helped you :D
a codon is a sequence of three nucleotides that specifies a particular amino acid. where do codons occur?
Codons are units of genomic information made up of three nucleotides (trinucleotides) in DNA or RNA that code for a specific amino acid or indicate the end of protein production (stop signals).
How is a nucleotide formed?A carbohydrate residue that is joined by a -D-glycosidic bond to a heterocyclic base and a phosphate molecule at C-5' (compounds with the -oh group at C-3' are also known) forms a nucleotide. Nucleosides are the chemicals produced when the phosphate group is taken out of nucleotides.
Is DNA a nucleotide or a protein?DNA, however, is not a molecule. Long strands of nucleotides make up DNA. Three parts—a phosphate group, a simple sugar, and a four nitrogenous up each nucleotide molecule. The options for the nitrogenous base are cytosine, guanine, pyrimidines, or adenine.
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plzzz hellllpppp!!!!
Answer: choice A
Explanation: hope this helps
SORRY IF IM WRONG
answer please. i will mark brainliest
Answer: WW
Explanation:
URGENT PLEASE HELP, WORTH 100 POINTS!!
1.What happens as the number of niches in an ecosystem goes up?:
1- biodiversity decreases
2- biodiversity increases
3- endangered species goes up
4- ecosystem stability goes down
2.What group of organisms has the greatest number of species?:
1- animals
2- insects
3- plants
4- protists
3.Why do coral reefs have such a high biodiversity?:
1- they have many different niches
2- they are found in northern latitudes
3- they are found in deep, warm waters
4- they have an unusually uniform habitat
Explanation:
1.What happens as the number of niches in an ecosystem goes up?:
Biodiversity increases- As the number of niches increases, I suppose there would be more competition for space
2.What group of organisms has the greatest number of species?
insects-In terms of numbers of species, insects certainly represent the largest percentage of the world's organisms. There are more than 1 million species of insects that have been documented and studied by scientists.
3.Why do coral reefs have such a high biodiversity?
they have many different niches-High biodiversity ensures the health of the reef. It spreads those roles across many species, so if one species is affected by a disease or other threat, that role won't be lost on the reef.
Which of the following is not an element?
O A. sodium chloride
O B. nitrogen
O C. hydrogen
O D. oxygen
O E. magnesium
Which type of RNA is transcribed from DNA to carry a message?
A. rRNA
B. tRNA
C. mRNA
Answer:
C. mRNA
Explanation:
The mRNA type of RNA is transcribed from DNA to carry a message.
1. ¿De cuantas personas estuvo conformada esta familia y en que tipología se encuentran? En -(Lucas 2:1-40)
Lucas 2:22–38
22 Y cuando se cumplieron los días de la purificación de ella, conforme a la ley de Moisés, le trajeron a Jerusalén para presentarlo al Señor
23 (como está escrito en la ley del Señor: Todo varón que abra la matriz será llamado santo para el Señor),
24 y para dar la ofrenda conforme a lo que está dicho en la ley del Señor: un par de tórtolas o dos pichones.
25 Y he aquí, había un hombre en Jerusalén llamado Simeón, y este hombre, justo y piadoso, esperaba la consolación de Israel; y el Espíritu Santo estaba sobre él.
26 Y había recibido revelación del Espíritu Santo que no vería la muerte antes que viese al Cristo del Señor.
27 Y movido por el Espíritu, vino al templo. Y cuando los padres llevaron al niño Jesús al templo, para hacer por él conforme a la costumbre de la ley,
28 entonces él lo tomó en sus brazos, y bendijo a Dios y dijo:
29 Ahora, Señor, despides a tu siervo en paz,conforme a tu palabra,
30 porque han visto mis ojos tu salvación,
31 la cual has preparado en presencia de todos los pueblos;
32 luz para revelación a los gentilesy gloria de tu pueblo Israel.
33 Y José y su madre estaban maravillados de las cosas que se decían de él.
34 Y los bendijo Simeón y dijo a su madre María: He aquí, este niño ha sido puesto para caída y para levantamiento de muchos en Israel, y para señal que será contradicha;
35 y una espada traspasará tu alma misma, para que sean revelados los pensamientos de muchos corazones.
36 Estaba también allí Ana, profetisa, hija de Fanuel, de la tribu de Aser, de edad muy avanzada, y había vivido con su marido siete años desde su virginidad;
37 y era viuda hacía ochenta y cuatro años, y no se apartaba del templo, sirviendo de noche y de día con ayunos y oraciones.
38 Y esta, llegando en la misma hora, daba gracias al Señor y hablaba del niño a todos los que esperaban la redención en Jerusalén.