Spartina is a group of grasses that dominates communities of salt marshes in many coastal areas. Many of the insects, snails, birds, mice, and other animals found in these communities rely on Spartina for food, nest building materials, protection for their young, etc. The roots of Spartina also form dense mats that hold together soil in these ecosystems. Many species that live in Spartina salt marshes cannot survive outside of these unique ecosystems. Because living near the ocean is desirable to many humans, many Spartina marshes have been drained & cleared for human development. Analysis of the destruction that came when Hurricane Katrina hit Louisiana in 2005, however, showed that the reduction of salt marshes in coastal Louisiana was a contributing factor to the storm surge penetrating further inland.
1. The value of Spartina salt marshes in protecting coastal areas from storm surge would be classified as which type?
A. Extrinsic.
B. Intrinsic.
C. Neither.
2. The value of Spartina salt marshes in holding soil together would be classified as which type?
A. Extrinsic.
B. Intrinsic.
C. Neither.
3. In general, you would expect species that only live in Spartina salt marshes to have a higher extinction risk than species that can survive in urban areas.
A. True
B. False
4. Based only on the information included in this scenario, extinction risk for species that only live in Spartina salt marshes would be most influenced by which factor?
A. Restricted geographic range.
B. Narrow habitat requirements.
C. Small population size.
Answers
Answer:
1)a. Extrinsic
2) b. Intrinsic
3) a. True
4) a. Restricted geographic range
Explanation:
1. Spartina Salt marshes are important to the coastal areas as they protect them from storm surge as affecting the erosion of salt marsh edges and it is classified as extrinsic.
2) b. Intrinsic
Intrinsic factors such as vegetation and soil affect the erosion of salt marsh edges. It is determined by characteristics of soil and root biomass found under the ground.
3) a. True
Species that could survive in urban areas are less prone to extinction than the species that only survive in spartina salt marshes.
4) a. Restricted geographic range
A restricted geographic range is a factor that leads and affects the extinction in endemic species more.
Related Questions
what usually accompanies a cold spell in minnesota?
Answers
explain the importance of all 3 biomolecules in general and for making ATP.
Answers
The three biomolecules that are used for making ATP are Lipids (fats) , Carbohydrates and Proteins
The biomolecules also known as biological molecules serve a wide range of activities and they vary in shape and their size . It is also considered essential to life because they help organisms develop, survive, and propagate. The biomolecules interact with one another which play a role in the development of organisms .
There are four types of biological molecules which are carbohydrates which is used as an energy source , lipids which is used for storage and support , proteins is used for supporting essential vital functions and amino acids are the developing elements that make up proteins and nucleic acids for storing genetic information .
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If a cell that is 0.05mm in diameter is viewed under a microscope with a 200x power lens, What will be the size of the image of mm.
if an image of a cell is 50mm in diameter when viewed under a 800x microscope, What is the size of the actual cell in mm.
Answers
Answer:
10mm , 0.0625mm
Explanation:
The size of the image of a cell that is 0.05mm in diameter viewed under a microscope with a 200x power lens would be 0.05mm * 200 = 10mm.
The size of the actual cell if an image of a cell is 50mm in diameter when viewed under a 800x microscope would be 50mm / 800 = 0.0625mm.
ALLEN
what is dna replication
Answers
DNA replication is the process of a cell or bacterium making copies, or replicating its DNA/Genetic Material to prepare for cell division.
Yep, it is exactly what it sounds like!
~~~Harsha~~~
What were the main lessones you learned about living things
Answers
Answer:
- Most living things need food, water, light, temperatures within certain limits, and air. Living things have a variety of characteristics that are displayed to different degrees: they respire, move, respond to stimuli, reproduce, grow, and are dependent on their environment.
Why is it said that natural selection acts on phenotypes rather than on the genetic material of organisms?
Answers
Answer:
It's because an organism's phenotype, or physical traits, are what truly decide whether it can reproduce and pass on its genotype to the following generation.
Because the phenotype of an organism represents the alleles that are actually expressed in that organism, natural selection affects that phenotype.
Explanation:
What kind of questions do biologists attempt to answer?
Answers
Explanation:
Biologists attempt to answer questions about the living world.
As an optician, you help to diagnose many common eyedisorders, such as nearsightedness and glaucoma. Currentlyin your office is Gabriel, a young boy who you just diagnosedas having red-green colorblindness. His parents, Catalina andRobert, seem surprised by this diagnosis, as neither of themis colorblind. They have many questions aboutcolorblindness. Using your knowledge of human genetics, youdo your best to answer their questions.
Answers
We can indicate the allele for colorblindness with lowercase b, and the allele for normal vision with a capital B. None of Gabriel's parents have the disease, but her mother is a carrier. This can be expressed as follows:
Gabriel's father
BB
Gabriel's mother
Bb
Another consideration that's needed to be done, is that this is an X chromosome-linked condition. We also know that XX is the chromosomes inherited by females, and XY the chromosomes inherited by males.
Having considered this, we can say that Gabriel's parents would have the following genotypes:
Gabriel's father
XBY
Gabriel's mother
XBXb
We have then this Punnet Square:
Upon this, we can say that there's an odd of 25 % of having a son with the disease, while a 75 % of having a healthy offspring (25 % of having a carrier daughter, and 50 % of having healthy-non carriers children).
So the correct statements of the question are the first one, the second one, and the final one.
7. Did either of the Voyagers visit Pluto? Why didn't the Voyagers fly by Pluto?
Answers
Answer:
Both Voyagers flew beyond the orbit of Pluto/Neptune in 1989, but neither flew by Pluto, which was elsewhere in its orbit at the time. It was never planned that the Voyagers would visit Pluto.
Explanation:
Why didn't the Voyagers fly by Pluto? Both Voyagers flew beyond the orbit of Pluto/Neptune in 1989, but neither flew by Pluto, which was elsewhere in its orbit at the time. It was never planned that the Voyagers would visit Pluto. The original mission of Voyager was to explore Jupiter and Saturn.
Name one source of human stem cells other than human embryos
Answers
Answer: For an adult stem cell, Cold blood.
Plate movement is caused by ___________ occurring within the mantle.
radiation
convection
conduction
subduction
Answers
Answer:
Definitely Convection
Explanation:
cooking improves the taste of food and makes it easy to digest . Are any nutrients lost .Explain
Answers
Answer:
yes it's true that cooking improve the taste of food and make it easier to digest while cooking some nutrients lost. raw materials are naturally surrounded by environment with nutrients. the ingredients which are using in cooking are also responsible for lost of nutrients.
Everything filled in please
Answers
The monomers, examples, location and linkage of the biomolecules can be found below;
Protein - amino acid, glutamine, cell, peptide bondCarbohydrate - monosaccharide, glucose, cell, glycosidic bondLipid - fatty acid, steroids, cell, ester bondNucleic acid - nucleotide, DNA, nucleus, N- glycosidic linkageWhat are biomolecules?Biomolecules are molecules, such as amino acids, sugars, nucleic acids, proteins, polysaccharides, DNA, and RNA, that occur naturally in living organisms.
Nucleic acids are any acidic, chainlike biological macromolecule consisting of multiple repeat units of phosphoric acid, sugar and purine and pyrimidine bases.
Proteins are a complex naturally-produced molecules composed of one or more long chains of amino acids, in which the amino acid groups are held together by peptide bonds.
A glycosidic bond or glycosidic linkage is a type of covalent bond that joins a carbohydrate (sugar) molecule to another group, which may or may not be another carbohydrate.
Lipids are any of a group of organic compounds including the fats, oils, waxes, sterols, and triglycerides.
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In some plants, the gametophyte is free-living and photosynthetic. Which group does not have a free-living gametophyte generation?
a. Ferns
b. Gymnosperms
c. Angiosperms
d. Both a and b
e. Both b and c
Answers
The correct option is E ; Both b and c , The male and female gametophytes of gymnosperms (such as Pinus) do not have their own free-living lives.
As a result, they remain within the sporangia retained on the sporophytes that are female gametophyte (within megasporangium) and male gametophyte (within megasporangium) (within microsporangium).
In gymnosperms, the female gametophyte is not free-living; rather, it is restricted within the megasporangium. Male and female gametophytes do not exist as free-living entities in gymnosperms and angiosperms.
Only seedless vascular plants (ferns and lycophytes) have independent, freeliving gametophytes, while all green plants alternate between the gametophyte and sporophyte life stages. Ferns' life cycle differs from that of other terrestrial plants in that both the gametophyte and sporophyte phases are free living.
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3. How is Acetyl-CoA prsluced during the acrobic oxidation of carbohydrates, and what happens to it? How is it produced during the aerobic oxidation of titty acids, and what happens to it
Answers
During the aerobic oxidation of carbohydrates, acetyl-CoA is produced through a series of metabolic reactions known as glycolysis and the citric acid cycle. During the aerobic oxidation of fatty acids, acetyl-CoA is produced through a process called beta-oxidation.
Pyruvate then enters the mitochondria, where it undergoes further processing to produce acetyl-CoA. This conversion occurs through a process called pyruvate decarboxylation, where pyruvate loses a carbon dioxide molecule and combines with coenzyme A (CoA) to form acetyl-CoA. Acetyl-CoA is a key molecule in energy metabolism and serves as a precursor for the citric acid cycle.
During the aerobic oxidation of fatty acids, acetyl-CoA is produced through a process called beta-oxidation. Fatty acids are broken down into two-carbon units, which then combine with CoA to form acetyl-CoA. This process occurs in the mitochondria, where fatty acids are sequentially cleaved into acetyl-CoA molecules. The acetyl-CoA molecules can enter the citric acid cycle to generate energy through oxidative phosphorylation.
Once acetyl-CoA is produced, it enters the citric acid cycle, also known as the Krebs cycle or TCA cycle. In this cycle, acetyl-CoA undergoes a series of enzymatic reactions, resulting in the production of ATP, NADH, and FADH2. These energy-rich molecules are then utilized in the electron transport chain to generate ATP through oxidative phosphorylation.
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139. The part of seed that stores food is called the answer
Answers
Answer:
Cotyledon
Explanation:
it is the embryonic leaf so it supplies the nutrients to germinate.
what directs light rays into the eye
Answers
Answer:The cornea
Explanation:The cornea directs light rays into the eye and helps focus them on the light-sensitive retina at the back of the eye, providing sharp, clear vision.
Answer:
Lens
Explanation:
Lens refract light rays on to the retina
A single gene with two alleles control variation in haemoglobin type in sheep. There are three different phenotypes corresponding to genotypes S^AS^A S^AS^B and S^BS^B respectively in a flock of 175 sheep the frequency of allele S^A was found to be 0.6 and frequency of allele S^B WAS found to be 0.4
Answers
Populations in Hardy-Weinberg equilibrium express the same allelic and genotypic frequencies through generations. Number of individuals expressing each phenotype: 63 sheep S^AS^A, 84 sheep S^AS^B, 28 sheep S^BS^B.
What is Hardy-Weinberg equilibrium?The Hardy-Weinberg equilibrium theory states that allelic and genotypic frequencies in populations that is in equilibrium remain the same through generations. No evolutive forces are acting on these populations, so no evolution occurs.
Assuming a diallelic gene,
Allelic frequencies
The frequency of the dominant allele f(X) is pThe frequency of the recessive allele f(x) is qGenotypic frequencies
p² (Homozygous dominant genotypic frequency), 2pq (Heterozygous genotypic frequency), q² (Homozygous recessive genotypic frequency).The addition of the allelic frequencies equals 1
p + q = 1.
The sum of genotypic frequencies equals 1
p² + 2pq + q² = 1
In the exposed example,
Alleles Frequencies
S^A f(S^A) = p = 0.6S^B f(S^B) = p = 0.4Genotypes
S^AS^A ⇒ homozygousS^AS^B ⇒ heterozygousS^BS^B ⇒ homozygousWe need to get the number of animals expressing each genotype and phenotype. To do it, we just need to use allelic frequencies and calculate genotypic frequencies (p², 2pq, and q²), and then multiply these values by the total number of animals (N = 175).
Genotypic and Phenotypic frequencies
F(S^AS^A) = p² = 0.6² = 0.36
F(S^AS^B) = 2pq = 2 x 0.6 x 0.4 = 0.48
F(S^BS^B) = q² = 0.4² = 0.16
Number of individuals expressing each phenotype
S^AS^A ⇒ 0.36 x 175 = 63 individualsS^AS^B ⇒ 0.48 x 175 = 84 individualsS^BS^B ⇒ 0.16 x 175 = 28 individualsYou can learn more about the Hardy-Weinberg equilibrium at
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Complete question
A single gene with two alleles control variation in haemoglobin type in sheep. There are three different phenotypes corresponding to genotypes
S^AS^A S^AS^B and S^BS^BIn a flock of 175 sheep the frequency of allele S^A was found to be 0.6 and frequency of allele S^B WAS found to be 0.4.
Using the hardy weinberg equation calculate the number of sheep with each phenotypes in the flock show your working
4.
Place the appropriate letter in the blank next to the parts of the small portion of an RNA molecule shown
and draw a line around one nucleotide.
Nitrogen bases
Ribose sugars
Phosphate groups
Answers
Answer:
niphneoix
Explanation:
Question 8(Multiple Choice Worth 3 points)
(04.01 MC)
Starting with the European settlers, humans have introduced earthworms from Europe and Asia into North American forests. These introductions continue through the transport of soil that contains non-native earthworms, such as during construction and through the release of non-native earthworms used for fishing. The effects of non-native earthworms are especially large in forests that did not have any native earthworms. For example, forests of the Great Lakes region did not previously have earthworms until humans introduced them. When non-native earthworms are introduced, the thick layer of leaves, known as leaf litter, covering the ground disappears quickly, thereby altering biogeochemical cycles.
What is a possible negative consequence of introducing the non-native earthworms to forests in the Great Lake regions?
PLease hurry
The earthworms reduce the resources available to other animals that eat dead plant matter.
The earthworm decreases the energy flow from one tropic level to the next.
The earthworms provide an additional food source for primary consumers.
The earthworms burrow, which reduces the nutrients, flow of air, and water underground.
Answers
Answer:
The earthworms reduce the resources available to other animals that eat dead plant matter.
Explanation:
The introduction of non-native earthworms in the Great Lakes region can have negative consequences on the ecosystem, including reducing the leaf litter and other organic matter in the soil, which is a main food resource for many species of animals and invertebrates, causing a decline in the population of those species. I apologize for any confusion my previous response may have caused.
What are 2 similarities chromosomes you get from parents
Answers
The two similarities between chromosomes that you get from your parents are Genetic Material and Number of Chromosomes.
What more should you know about genetic materials and number of chromosomes you get from parents?In terms of Number of chromosomes: Every Humans have 23 pairs of chromosomes, for a total of 46 chromosomes. Each parent contributes 23 chromosomes to their child, for a total of 46.
in tems of Genetic material: The chromosomes that you get from your parents contain the same genetic material. This is why you look like your parents and why you have inherited some of their traits.
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What are the components of the sympathetic nervous system?
Answers
The components of the sympathetic nervous system include:
the preganglionic neurons,the sympathetic ganglia, and the postganglionic neuronsWhat is the sympathetic nervous system?The sympathetic nervous system is a branch of the autonomic nervous system that functions under stressful conditions in the body.
The sympathetic nervous system is responsible for the flight or flight response in living organisms.
The functions of the sympathetic nervous system include:
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The components of the sympathetic nervous system include the following:
Preganglionic fibersGanglia"Fight or Flight"ThoracolumbarNeurotransmitter: norepinephrineWhat is a nervous system?A nervous system simply refers to a network that typically consist of nerve cells and fibers, which are primarily used for the transmission of neural impulses (signals) and control of the muscular system in the body of a living organism.
What is the sympathetic nervous system?The sympathetic nervous system is a type of autonomic nervous system and it can be defined as a network of nerves that is saddled with the responsibility of activating "fight or flight" response in the body of a living organism, especially when in danger, stressed, or indulged in physical exercises.
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4. The ATP yield from 2 moles of mitochondrial NADH under aerobic conditions in a eukaryotic cell would be: which option is correct a) 1 mole of ATP b) 2 moles of ATP c) 3 moles of ATP d) 4 moles of ATP e) 6 moles of ATP
Answers
The ATP yield from 2 moles of mitochondrial NADH under aerobic conditions in a eukaryotic cell is approximately 4 moles of ATP.
During oxidative phosphorylation, each mole of NADH can generate around 2.5 to 3 moles of ATP. Therefore, for 2 moles of NADH, the total ATP production would be in the range of 4 to 6 moles of ATP. While the more precise estimate falls within the 4 to 6 moles range, the closest option provided is 4 moles of ATP. It is important to note that the exact ATP yield can vary depending on factors such as the efficiency of the electron transport chain and the specific conditions within the cell.Since there are 2 moles of mitochondrial NADH, the total ATP yield would be around 4 to 6 moles of ATP. However, the most accurate option among the given choices is 4 moles of ATP.
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Which of the following would be an example of an R-selected species?
Answers
An example of an R-selected species would be one that produces a large number of progeny with small size. So, the correct option is C.
R-selected species are characterized by their reproductive strategy, which focuses on producing a large number of offspring with relatively small size. These species prioritize quantity over quality when it comes to offspring production.
Option ''Large number of progeny with small size'' represents an example of an R-selected species. These species typically have a high reproductive rate and invest minimal resources in individual offspring. By producing a large number of progeny, they increase the chances of survival and successful reproduction in unpredictable or unstable environments.
In contrast, options A) Small number of progeny with small size and B) Small number of progeny with large size represent strategies more commonly associated with K-selected species. K-selected species prioritize quality over quantity, producing fewer offspring but providing them with greater parental investment and resources, resulting in larger size and higher survival rates.Option D) Large number of progeny with large size is less commonly observed in nature and does not align with the reproductive strategy of either R-selected or K-selected species.Therefore, the correct option is C.
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Complete Question:
Which of the following would be an example of an R-selected species?
A) Small number of progeny with small sizeB) Small number of progeny with large sizeC) Large number of progeny with small sizeD) Large number of progeny with large sizeWhich is a characteristic of nuclear fusion?
A: produces radioactive waste
B: involves the collision of two nuclei
C: commonly used by humans as an energy source
D: requires very little activation energy
Answers
Answer:
B.Involves the collision of two nuclei energy source
Explanation:
A characteristic of nuclear fusion is that it involves the collision of two nuclei.
What is nuclear fusion ?
Nuclear fusion is a reaction through which two or more light nuclei collide to form a heavier nucleus.
The process releases energy because the total mass of the resulting single nucleus is less than the mass of the two original nuclei. The leftover mass becomes energy.
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One of the key considerations when developing antibiotics is targeting bacteria without harming the infected individual. Protein
synthesis in bacteria and eukaryotes are different enough that this is a good target for antibiotics that inhibit translation
machinery. In fact, antibiotics that inhibit bacterial translation can do so in different ways.
Select the specific mechanisms by which certain antibiotics interfere with translation.
binds to the 50s ribosomal subunit
binds to the ribosome and blocks subsequent translation
supercoiled DNA
relaxes
interferes with gyrase, which refs
inhibits cell structural integrity by interfering with peptidoglycan synthesis
Answers
The specific mechanisms by which certain antibiotics interfere with translation are bound to the 50s ribosomal subunit. The correct option is a.
What is translation?Protein synthesis is the process through which proteins are synthesized in the cells of living beings. It is finished in two stages: transcription and translation. The translation is the second step in the protein production process.
The transcribed information from DNA to RNA (transcription) is subsequently translated into a protein or amino acid sequence in translation. The translation process is separated into three stages. Starting, extending, and finishing.
During elongation, the t-RNA must attach to three different locations on the ribosomes. P site (peptidyl), A site (aminoacyl), and E- site are the three locations (exit).
Therefore, the correct option is a, which binds to the 50s ribosomal subunit.
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Which statement is true about Jupiter
Answers
Describe Claire's symptoms. Explain how they were related to metabolism and homeostasis.
Answers
Answer:
Claire's symptoms suggest that lately, she is not enjoying her work which she was very fond of due to her poor eyesight. She is tearful while reading, she is afraid of her role as a mother for their kids in the future, she is worried for her mother. She can not sleep without sleeping pills. she put 30 pounds as she is not active and watches television or the internet all-day.
Metabolism is the process that maintains the body and cell of an organism by involving various chemical reaction that helps in extracting, storing, and utilizing the energy. Homeostasis and metabolism are related to one another as metabolism is required to maintain homeostasis and homeostasis are required for efficient metabolism.
In the context of molecular genetics, how does one reconcile the terms overlapping genes and nonoverlapping code
Answers
Answer:
A sequence of DNA can encode different gene products (overlapping genes), whereas each specific nucleotide letter in this sequence can not be used by two different codons (i.e., genetic code is nonoverlapping)
Explanation:
The overlapping genes are nucleotide sequences transcribed in two (or more) different messenger RNAs (mRNAs), which are subsequently translated in two (or more) unrelated proteins. The overlapping genes are originated by an evolutionary process known as overprinting, where mutations in an Open Reading Frame (ORF) enables the emergence of a second ORF that encodes a new functionally unrelated protein. On the other hand, the codons in the nucleotide sequence do not overlap, i.e., one specific letter (nucleotide) is used only by one single codon. It is for that reason that the genetic code is nonoverlapping.
Which of the answer choices could be used to define the ecological niche of a plant species? Select all that apply o the pH of its soil o the depth to which the soil freezes in the winter o the number of competitors present o the insects that eat it
Answers
None of the given option correctly define the ecological niche of a plant species.
Ecological niche is defined as the functional area of an organism. It is the description of the role that the organism plays in the surroundings that it lives in. A niche is small part of the habitat. The niche has both the biotic and the abiotic factors encompassed along with their interactions.
Niche can be of two types: fundamental niche and realized niche. The fundamental niche is the space that the organism occupies when it is alone and there is absence of any competitor. Realized niche is the real form of niche that an organism occupies in presence of competitors.
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