true/false. many carrbean reefs face multiple enviormental and bilolgical threats.
Answers
Answer:
true
Explanation:
Unfortunately, coral reef ecosystems are severely threatened. Some threats are natural, such as diseases, predators, and storms. Other threats are caused by people, including pollution, sedimentation, unsustainable fishing practices, and climate change, which is raising ocean temperatures and causing ocean acidification.
Related Questions
How does 02 enter the mitochondria
Answers
How does oxygen enter the mitochondrial matrix? The electrons taken from NADH and FADH are passed to several other proteins in the inner mitochondrial membrane. Ultimately, they are passed to oxygen (O2). O2 becomes two molecules of water (H2O) after receiving four electrons. This is how oxygen is used by cell respiration.
introductory cell biology lab manual george mason university
Answers
The introductory cell biology lab manual at George Mason University provides students with hands-on experience in the fundamentals of cell biology. The lab manual covers topics such as microscopy, cell culture techniques, and DNA isolation and analysis. The manual is designed to help students understand the basics of cell structure and function, as well as gain proficiency in various laboratory techniques.
With clear instructions and step-by-step procedures, the lab manual is an invaluable resource for students who want to learn about cell biology in a practical way. It is an essential tool for students who are looking to pursue careers in biological research, medicine, or biotechnology.
The Introductory Cell Biology Lab Manual at George Mason University is a comprehensive guide designed to help students understand fundamental concepts and techniques in cell biology.
This manual provides step-by-step instructions for laboratory experiments, ensuring students gain hands-on experience in a structured and informative manner. By following the guidelines in the manual, students can effectively apply theoretical knowledge to practical applications, enhancing their overall understanding of cell biology. This resource is an essential tool for students pursuing a degree in the life sciences at George Mason University, as it offers a clear and concise approach to mastering the basics of cell biology in a laboratory setting.
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How are hydrocarbons released into the air?
Answers
Hydrocarbons released into the air in innumerable ways. Be it through their usage as a fuel, their uses in the industry, or occasionally even through spills and leaks.
It is estimated that vehicles powered by these hydrocarbon-based fuels are to blame for 60% of air pollution. The incomplete combustion of these hydrocarbon fuels is the primary cause of this pollution.
Because of this, hydrocarbons and nitrogen oxides react (NO2). Ozone is created when the resulting gases are exposed to the sun's rays.
A heavy type of oxygen is Ozone (O3). In the atmosphere, it becomes stable. This is why air around traffic congestion, for example, seems filthy and heavy. In this instance, ozone, a pollutant, generates haze.
This incomplete combustion of hydrocarbons has a significant impact on air quality, generating a variety of problems ranging from infections to poor sight.
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True or false? There are only a few places in the food supply where pathogens can be introduced
Answers
Answer:
False
Explanation:
There are multiple ways in which the food supply can be introduced to pathogens e.g.
1)inadequate handwashing.
2)cross-contamination.
3)storage and cooking temperatures.
4)contamination of food by animal waste
The supplement is taken in the form of a tablet that is swallowed. Each tablet is covered in a substance that breaks down only in alkaline conditions to release the components of the supplement. Suggest why this covering is important if the supplement is to work effectively in the alimentary canal.
Answers
Answer:
To make it affective for absorption in small intestine. To enhance it's bioavailability.
Explanation:
It is covered with a substance
To protect it from denaturing by an acid of the stomach. To enhance it's absorption in the alkaline medium as some drugs/medicine are greatly absorbed in alkaline medium. The drugs are easily absorbed from the small intestine as it has villi on it's walls that are best suitable for absorption of things into blood.All the above mentioned things increase bioavailability of the supplement.
Dna strands are antiparallel. Which of the following statements defines antiparallel?.
Answers
Answer:
A 5 to 3 DNA stand is paired with the. 3 to 5 DNA stand.
Explanation:
Why is it necessary to separate oxgynated blood and deoxgynated blood in living organisums?
Answers
Answer:
For efficient transportation of blood.
Explanation:
Resident memory T cellsSelect one:a. circulate through tissues in a similar pattern to naive T cells.b. must return to the secondary lymphoid organ to receive costimulatory signals for activation.c. persist in non-lymphoid tissues that have effectively cleared an infection with a pathogen.d. are the type of memory T cell most likely to activate a B cell.e. are the rarest type of memory T cells.
Answers
Resident memory T cells persist in non-lymphoid tissues that have effectively cleared an infection with a pathogen.
Resident memory T cells (TRM cells) are a subset of memory T cells that reside in non-lymphoid tissues, such as skin, mucosal surfaces, and organs, after an infection has been cleared. They provide rapid and localized immune responses upon re-encounter with the same pathogen. Unlike circulating memory T cells, which continuously circulate through the blood and lymphoid organs, TRM cells stay within the tissues where they initially encountered the pathogen. TRM cells do not require costimulatory signals from secondary lymphoid organs for activation (option b). They have already received the necessary signals during their initial activation in the lymphoid organs. Their presence in non-lymphoid tissues is crucial for efficient immune surveillance and response in those tissues. TRM cells are not the type of memory T cell most likely to activate B cells (option d). This role is primarily performed by follicular helper T cells. Additionally, it is incorrect to state that TRM cells are the rarest type of memory T cells (option e), as their presence in tissues is a recognized and important aspect of immune memory.
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"Trichomon/iasis is caused by a ___________ that causes a mal/odorous frothy yellow to green discharge, itching (pruritus), and burning."
Answers
Trichomoniasis is caused by a protozoan parasite that causes a mal/odorous frothy yellow to green discharge, itching (pruritus), and burning.
What is Trichomoniasis?Trichomoniasis is a disease caused by a parasite whose symptoms are hugely variable among different persons.
Trichomoniasis is caused by the protozoan Trichomonas vaginalis, which infects suitable human hosts.
Trichomoniasis is a serious-mid disease and it must be treated properly in medical settings.
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Where does cellular respiration get the energy to make ATP?
A. Chemical energy from sugars.
B. Light energy from the Sun.
C. Energy stored in the covalent bonds of water molecules.
D. Energy stored in the covalent bonds of carbon dioxide molecules.
Answers
Answer:
im un sure it might be B.
Explanation:
You don't have to if you don't.
Answer:
A . the chemical energy from sugars
Select all that apply
Which are ways that Earth's oceans affect Earth? Choose all that apply.
They provide mineral and energy resources.
They are a source of freshwater.
They play a role in the water cycle.
They are a major source of food and income.
Answers
All of the options listed are ways that Earth's oceans affect Earth. They provide mineral and energy resources. They are a source of freshwater, They play a role in the water cycle, They are a major source of food and income.
The oceans fundamentally influence the climate and weather patterns of our planet and they also have a big impact on life on land. One major source of minerals and energy, such as oil and natural gas is the ocean. They contribute to the water cycle by facilitating the movement of water between the atmosphere, land and oceans.
This cycle preserves the balance of nutrients and water, which is necessary for all life forms. The fishing industry and other ocean related industries provide a living for millions of people worldwide making the oceans a significant source of both food and income.
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from which source do almost all producers obtain their energy
Answers
Answer:
Sunlight
Explanation:
I took bio last year
If you want to protect the plants from insect damage, should you encouraged birds to forage on the plants, or put netting over the plants to keep birds out? explain your reasoning.
Answers
The insect converts about ten percent of the plant's energy into biomass.Only 10% of the insect's energy is subsequently converted by the bird into biomass. As you move up the food chain, this persists.
This explains why an ecosystem's energy model has a pyramidal structure. The biomass decreases as you move up the food chain.This is because energy is transferred very inefficiently across tropic levels, with 90% of the energy being wasted to the environment as heat energy.In the scientific discipline of biotechnology, organisms’ genetic makeup is altered. This raises the standard of living.Inserting a gene that causes plants to release compounds that fight insects into them is the best choice among the possibilities presented. This is due to the fact that it entails altering the genome of the plant organism in order to provide it resistance to insect invasion.
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Bones and cartilages ar both skeletal, supportive systems. Yet, one is thick and long, one is thin and rather small? What are some of the major factors that account for the differences.
Answers
Bones and cartilages constitute the skeletal system in which bone has a hard pliable matrix whereas cartilage has a soft, non-pliable matrix.
Bone is hard connective tissue due to the deposition of calcium salts. It provides structural support to the human body and has a weight-bearing function. It covers and protects the internal organs from mechanical shocks.
Cartilage is a soft connective tissue. It is distributed majorly in newborns and invertebrates. It has the deposition of chondrin salts which makes it soft and flexible. cartilage functions as a shock absorber and facilitates the smooth movement of bones.
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by what time of life are all oogonia formed in females?
Answers
Answer:
the sixth to the eighth week of pregnancy with the female.
Help I'LL give brainly Est
Answers
Answer:
The second answer
Explanation:
Attachment, penetration, replication, assembly, release
Answer:
B
Explanation:
The life cycle of a virus. The virus life cycle could be divided into even six steps: attachment, penetration, uncoating, gene expression, replication, assembly, and release.
Hope this helps! Please let me know if you need more help or think my answer is incorrect. Brainliest would be MUCH appreciated. Have a wonderful day!
1. Does this require energy?
2. What type of passive transport does this diagram represent ?
Answers
1. No, it does not require energy.
2. Facilitated type of passive transport does this diagram represent.
Passive transport does not require energy for transport.
An example of passive transport is diffusion, the movement of molecules from an area of high concentration to an area of low concentration. Carrier proteins and channel proteins are involved in facilitated diffusion.
Passive transport is a naturally occurring phenomenon and does not require the cell to expend energy to accomplish the movement. In passive transport, substances move from an area of higher concentration to an area of lower concentration in a process called diffusion.
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List 2 for each fluid: Specify if each fluid is a liquid or gas and explain why.
1. Home
2. school/work
3. outdoors
Answers
The types of fluid include the following below:
1. Home - Liquid soap, oil
2. School/work - Water, nitrogen.
3. Outdoors - Oxygen, water
What is a Fluid?This is referred to as a substance which could be in the form of liquid or gas and is capable of continually flowing when it is subjected to shear stress or external force.
There are different types of fluids such as liquid soap which is used in the home for household chores such as washing and cleaning of materials or surfaces.
Fluids such as oxygen and water are used outdoor in the form of drinking so as to rehydrate the body and ensure that the body system functions optimally.
Fluids such as water and nitrogen can be used at work especially in industries which manufacture manure as it is an important component of chlorophyll which helps to trap sunlight for photosynthesis.
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Answer:
Home: Cooking Oil is used to cook a variety of vegetables/ foods, Water is a basic need to live and we drink it everywhere including our homes.
School: Liquid soap is used for clean windows, floors and sometimes ourselves, Oxygen is also a basic need just like water to live but for breathing.
Outdoors: Engine Oil is a liquid and used to repair cars and Gas is a fuel used to run cars and vehicles
why should we not view lactose intolerance as a disease in adult humans?
Answers
Answer:
Because lactose intolerance isn't a disease, it just mean the individual's stomach isn't able to digest the lactose found in milk.
Explanation:
which of the following is an example of gene therapy? a) an ear of corn contains genes that produce natural pesticides. b) a human has one allele for a normal gene and one allele for a mutated gene. c) a patient with hereditary anemia is given a normal version ofthe gene. d) protein from a healthy person is iniected into someone who cannot make that protein. e) a human protein is made in bacteria for future injection into someone who lacks it.
Answers
(Option C.) A patient with hereditary anemia is given a normal version of the gene.
In this example, a patient with hereditary anemia is given a normal version of the gene, which will help to restore the proper functioning of the patient's cells and provide relief from their anemia symptoms. An example of gene therapy:(Option C.) A patient with hereditary anemia is given a normal version of the gene.Gene therapy is an experimental technique whereby a patient's own genetic material is modified in order to treat a medical condition. In this example, a patient with hereditary anemia is given a normal version of the gene in order to restore the proper functioning of the patient's cells and provide relief from their anemia symptoms.
Gene therapy can be used to treat a variety of genetic illnesses and diseases, from inherited forms of blindness to inherited forms of cancer. While gene therapy is still in its early stages, much progress has been made in the last few decades in understanding how to manipulate genetic material in order to treat medical conditions.
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a neuroglial cell that is a major component of the blood-brain barrier is the
Answers
The neuroglial cell that is a major component of the blood-brain barrier is astrocyte.
Astrocytes are a type of neuroglial cell that play a critical role in the formation and maintenance of the blood-brain barrier. The blood-brain barrier is a highly selective barrier that separates the circulating blood from the brain extracellular fluid in order to protect the brain from harmful substances. Astrocytes have finger-like extensions called "perivascular feet" that wrap around the endothelial cells of the capillaries in the brain, forming a physical barrier that restricts the movement of substances between the blood and brain tissue. They also secrete various chemical signals that help to regulate the permeability of the blood-brain barrier. Damage to astrocytes can lead to dysfunction of the blood-brain barrier and contribute to various neurological disorders.
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give one word for each of the following descriptions animals enter a state of rest during winter
Answers
Answer:
Hibernation
Explanation:
Hibernation is a way animals conserve energy to survive adverse weather conditions or lack of food.
1. _______ behavior is inherited and programmed in the genetic code.
2. When a deer hears a sound in the forest, such as crackling footsteps, it immediately freezes and then bolts through the bushes. This is an example of the _______ response.
3. Mating rituals or displays can be very complex but are also _______ behaviors.
4. When animals fight and one wins and one submits, this allows for the establishment of a _______. This means that one animal (the winner) likely gets to reproduce and lead the group.
5. _______ behavior is used to intimidate other animals in social interactions. Examples include baring teeth or growling.
6. _______ behaviors rely on prior practice or experience.
7. When a dog is sleeping and does not react to the sound of a person walking around the house, that is most likely an example of ________.
8. A common type of learning that involves experimenting to get a reward is called _______.
9. _______ is the pattern of behavior that follows the day/night cycle.
10. Many bird species have seasonal behaviors that cause them to _______ or change their location.
11. Explain how territorial behavior helps an animal population survive.
Answers
Answer:
Innate
fight or flight
innate
hierarchy
Aggressive
Learned
habituation
trial and error
Circadian rhythm
migrate
When animals mark their territory they ensure that the mates and food in their area are not overwhelmed. Though territorial animals often fight, it is not to the death, and more to establish social order. This prevents them from over-eating their environment and helps the entire species stay in balance to survive.
Explanation:
HELLPP! ITS BIOLOGY
Answers
Answer:
So that in a guinea pig cross in the offspring the recessive trait —long hair— can be observed in 25%, the most probable genotype of the parents is heterozygous Ss.
Explanation:
In guinea pigs, for the characteristic hair length, short hair is the dominant allele and long hair is the recessive one.
In order for 25% of the offspring to express the recessive characteristic, the parents must have a recessive genotype, which can be seen in Punnett's Square:
P: Ss X Ss
Alleles S s
S SS Ss
s Ss ss
Where the offspring is:
50% Ss with short hair phenotype 25% SS with short hair phenotype 25% ss whose phenotype would be long hair.According to this, heterozygous parents for the characteristic long hair in guinea pigs have a 25% chance of having offspring with long hair.
What is the sentence stem cell?
Answers
Answer:
Sentences Mobile
Stem cells in embryos generate all other tissues in the body. Opponents say the use of embryonic stem cells would encourage abortions.
Explanation:
Sentences Mobile
Stem cells in embryos generate all other tissues in the body. Opponents say the use of embryonic stem cells would encourage abortions.
Acid rain discolors and disfigures a limestone statue.
Which type of weathering is this?
A. mechanical
B. physical
C. biological
D. chemical
Answers
Acid rain discolors and disfigures a limestone statue.
Which type of weathering is this?
Options:-A. mechanical
B. physical
C. biological
D. chemical
Answer:- Option D. ChemicalExplanation:- When NO2 and SO3 in the air mixes with rain drops they form acids nitric acid and sulphuric acid respectivelywhen these acids fall in the form rain they are called acid rain Acid rain when fall on the limestone statues they crode away the minerals from them after reacting with them They change insoluble compounds into soluble which is a chemical reaction Weathering due to chemical reaction is called chemical weathering .The wings of species X and Y are built on same basic pattern but are modified for flying. Based on the statement, discuss the type of evolution they represent.
Answers
Biologists can explain how a species of fly without wings evolved from an ancestral fly species with wings through environmental adeptness.
The wings of species X and Y are built on same basic pattern but are modified for flying?Environmental change is any change in an ecosystem or environment that warrens adaptability from the inhabiting organisms in order to survive. The ability to adapt to these changes is known as environmental adeptness. This is a form of evolution in which an organism will generate or loose characteristics in response to changes in its way of life.Biologist can explain how a species of fly without wings evolved from an ancestral fly species with wings through environmental adeptness because the presence of unnecessary wings would have caused the expenditure of energy with no benefit to the fly, therefore, the offspring of a fly who lives in an environment which has no need for the ability to fly will gradually loose their wings in order to retain more energy and function more efficiently. This is evolution through environmental adaptedness.Many species share much the same DNA: All living things have DNA molecules that encode all genetic information. Among living things there are similarities and sharing of parts of DNA. This is strong evidence of species evolution. An example of this is the similarity between humans and chimpanzees.Plant and animal cells have almost all of the same structures: Although there are some differences, plant and animal cells share almost all cell structures. This is a strong indication of how life has evolved on our planet.To learn more about species and wings refer to:
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microarrays are created by robotically placing dna on to a microscope slide and probing with a) rna from the tissue of interest. b) another dna from the tissue of interest. c) snps from the tissue of interest. d) stss from the tissue ofinterest. e) clone-by-clone sequencing.
Answers
a) rna from the tissue of interest. A general laboratory technique known as "microarray technology" involves attaching a collection of thousands to millions of known nucleic acid fragments to a solid surface - a "chip."
The chip is then soaked in DNA or RNA that has been extracted from a test sample. A DNA microarray is used to simultaneously monitor and assess the expression of thousands of genes. Numerous single-stranded DNA fragments, each of which represents a different gene, are glued to the glass slide in minute quantities. For microarray analysis, blood samples are preferable. A tissue sample or spit (saliva) may also be used occasionally. This test looks for very little additional or missing chromosomes that cannot be seen under a microscope by comparing the patient's sample to a healthy control sample.
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In individual insects of some species, whole chromosomes that carry larval genes are eliminated from the genomes of somatic cells at the time of metamorphosis. As a result of the chromosome loss, which of the following consequences is most likely? a) cloning a larva from the somatic cells of such an adult insect would be difficult. b) sequencing of the entire genome will not be possible. c) such species must reproduce only asexually. d) metamorphosis can no longer occur among the descendants of such adults
Answers
The most likely consequence of the elimination of whole chromosomes carrying larval genes from the genomes of somatic cells at the time of metamorphosis in some insect species is that sequencing of the entire genome will not be possible.
This is because sequencing the entire genome requires the presence of all the chromosomes in the somatic cells. If some chromosomes have been eliminated from the genome of the somatic cells, then sequencing the entire genome would not be possible.
The other options are less likely or not related to the phenomenon described.
Cloning a larva from the somatic cells of such an adult insect would not necessarily be difficult, as the somatic cells would still contain the genetic information needed to produce a clone.
Such species do not necessarily have to reproduce only asexually, as the loss of chromosomes in somatic cells does not necessarily affect the germ cells involved in reproduction.
Metamorphosis can still occur among the descendants of such adults because the loss of chromosomes occurs only in somatic cells and not in germ cells, which carry the genetic information needed for the next generation.
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What is the expression of a gene?
Answers
Answer:
Gene expression is the process by which information from a gene is used in the synthesis of a functional gene product that enables it to produce protein as the end product. ... The genetic information stored in DNA represents the genotype, whereas the phenotype results from the "interpretation" of that information.
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