Answer:
Explanation:
Aquatic ecosystems cover about 70% of Earth’s surface while terrestrial ecosystems cover about 28.26% 12. However, terrestrial ecosystems are much more productive than aquatic ecosystems per unit area. Terrestrial ecosystems account for about 2/3 of the biosphere’s primary producers while aquatic ecosystems account for only about 1/3, despite occupying a larger surface area 3. This means that terrestrial ecosystems are 5-6 times more productive than aquatic ecosystems per unit area 3.
☆♪If seaweed covers most of Seafoam Reef, the reef's biodiversity will probably decrease. This will increase the reef's resilience, or ability to handle damage. This change will probably also increase the ecosystem services that Seafoam Island receives from the reef because more tourists will pay to visit.The scientists' projections show that if nothing is done to stop boat anchors from damaging corals, seaweed may eventually cover most of Seafoam Reef. This could become a major problem for both Seafoam Reef and Seafoam Island.☆♪
♡ ♡ If seaweed covers most of Seafoam Reef, the reef's biodiversity will probably decrease or increase. This will increase or decrease the reef's resilience, or ability to handle damage.♡
This change will probably also increase the ecosystem services that Seafoam Island receives from the reef because more tourists will pay to visit.♡
(Please chose decrease or increase)
♡ To solve this problem, the people of Seafoam Island should or should not consider changing how boat anchors are used on Seafoam Reef.
(Please chose should or should not)
If seaweed covers most of Seafoam Reef, the reef's biodiversity will probably decrease.
To solve this problem, the people of Seafoam Island should consider changing how boat anchors are used on Seafoam Reef.
What leads to decrease in biodiversity?There are a variety of factors that can lead to a decrease in biodiversity, including; habitat destruction, climate change, overexploitation, pollution, invasive species, disease, human activities.
The decrease in the biodiversity will decrease the reef's resilience, or ability to handle damage. This change will probably not increase the ecosystem services that Seafoam Island receives from the reef because more tourists will not necessarily pay to visit if the biodiversity and resilience of the reef are diminished.
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which essential organelle, which is present in all other eukaryotes, is functionally absent in the parabasilids and diplomonads? A) mitochondrion B) nucleus C) plasma membrane D) flagellum E) chloroplast
The essential organelle, which is present in all other eukaryotes, is functionally absent in the parabasalids and diplomonads is mitochondrion, option A.
An organelle is a subcellular structure that, like an organ in the body, has one or more specific tasks to carry out within the cell. Among the more essential cell organelles are the nuclei, which store genetic information; mitochondria, which provide chemical energy; and ribosomes, which construct proteins.
The absence of mitochondria, an organelle whose primary tasks involve respiration and energy synthesis, is the primary hallmark of diplomonads. However, more recent study has demonstrated that these microbes have mitosomes, which are non-functional remnant organelles of mitochondria. The mitosomes that have been found in diplomonads have iron and sulphur metabolic activities. These mitosomes lack mitochondria's ability to participate in the mechanics of respiration.
Similarly to diplomonads, parabasalids are another type of protists without genuine mitochondria. Instead of real mitochondria, parabasalids have modified or semi-functional mitochondria termed hydrogenosomes, which function anaerobically.
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One result of meiosis is the formation of gametes. true false
One result of meiosis is the formation of gametes is true.
The development of gametes, which are specialized reproductive cells necessary for sexual reproduction, is one of the main outcomes of meiosis. Male and female gonads (the ovaries and testes, respectively) create gametes, which have half as many chromosomes as the parent cell. This is crucial because when the sperm and egg join during fertilization, the emerging zygote will have the entire complement of chromosomes.
In the course of meiosis, the diploid parent cell divides twice to give rise to four haploid daughter cells, each of which is genetically distinct. This is accomplished by random chromosome segregation during meiosis I and meiosis II, as well as a process of genetic recombination, in which homologous chromosomes exchange genetic material.
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Does bone thickness determine bone strength?
Answer: Bone strength is determined by bone geometry, cortical thickness and porosity, trabecular bone morphology, and intrinsic properties of bony tissue
Explanation: Bone strength is indirectly estimated by bone mineral density (BMD) using dual-energy X-ray absorptiometry (DXA).
Answer: Yes and no
Explanation:
What Are Antibiotics And What Are The Precautions That Must Be Taken While Taking Antibiotics?
Answer:
Antibiotics are medicines that fight infections caused by bacteria in humans and animals by either killing the bacteria or making it difficult for the bacteria to grow and multiply.
Explanation:
Antibiotics should only be taken under the guidance of a skilled physician. The antibiotic course should be finished according to the doctor's instructions. Antibiotics must be administered in the correct dosage and at the appropriate time. Antibiotics that are given in the wrong dose become useless.
i hope this helps
if a researcher was interested in slowing down the movement of amoebas by disrupting their cell membranes, which protein filaments should she be studying?
To slow down the movement of amoebas by disrupting their cell membranes, a researcher should be studying the actin filaments.
One of the key parts of the cytoskeleton, which keeps cells in their proper shapes and supports them structurally, are actin filaments. Actin filaments perform these tasks as well as assisting in the development of pseudopodia, which are movements used by amoebas. Pseudopodia are extensions of the cell membrane.
The production of pseudopodia by amoebas could be impacted by cell membrane disruption, which in turn could have an impact on how they travel. Actin filaments are essential for cell mobility and serve a crucial role in the development of pseudopodia. Therefore, by preventing amoebas from forming pseudopodia, interrupting the actin filaments could limit their motility.
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1explain why the delay between muscle stimulation and load movement became longer asthe load became heavier in the experiment. how well did the results compare with yourprediction?
The delay between muscle stimulation and load movement became longer as the load became heavier in the experiment because it takes more time for the muscles to generate enough force to move a heavier load.
The results of the experiment compared well with the prediction, since the prediction was that the delay would increase as the load became heavier.
The delay between muscle stimulation and load movement became longer as the load became heavier in the experiment due to the increased tension within the muscle fibers. The muscle needs to generate more force to move the heavier load, and it takes longer for the muscle fibers to generate that force. The results were in line with the prediction, as it was expected that heavier loads would require more time for the muscle fibers to generate sufficient force to move the load.
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In eukaryotic cells the pre-mRNA undergoes processing. Check the following options that are a type of mRNA processing. 5'G Cap 3' G Cap 3' Poly A tail 5' Poly A tail removal of exons removal of introns
The options that display the processing of pre-mRNA are: (1)5'G Cap; (3) 3' Poly A tail; (6) removal of introns.
pre-mRNA is the first strand produced right after transcription. It is unprocessed and contains both useful and junk parts. The processing of pre-mRNA is done which makes the fully functional m-RNA which is ready to be translated into protein.
Introns are the part of the genes that are transcribed by the process but are note required for the synthesis of a functional protein. Therefore, they are removed in a process called splicing where the introns are removed and all the exons are joined together.
Therefore the correction answer is options 1, 3 and 6.
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10. Kinetic energy is defined as
A. a measure of the mass of an object
B. a measure of the amount of motion particles have
C. a measure of the distance between particles in an object
D. a measure of the number of particles in an object
tube 3 did not have starch or amylase in it. why did it show a positive reaction with benedict’s reagent?
a. benedict’s reagent reacts with maltose
b. benedict’s reagent reacts with the pH buffer
c. maltose was broken down into starch by the acidic environment
benedict’s reagent reacts with water
Tube 3 did not have starch or amylase in it but still it showed a positive reaction with benedict's reagent because benedict's reagent reacts with maltose. The option is A.
Benedict's reagent is used to test for the presence of reducing sugars such as maltose, glucose, and fructose. This reagent is composed of copper sulfate, sodium citrate, and sodium carbonate. When a reducing sugar is present, it reduces the copper sulfate to cuprous oxide, which causes a red precipitate to form.
The positive reaction in tube 3 even though it does not contain amylase or starch is due to maltose presence, which is broken down from the starch in the previous tube into maltose by the amylase, which causes the benedict's reagent to show a positive reaction.
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what percentage of females are typically tuskless in an elephant population less affected by poaching? How does this compare to the populations studied by joyce poole?
The majority of African elephants have tusks, although approximately 6% of females in a group never develop them. Mature males without tusks are quite uncommon.
In contrast, 33% of females between the ages of 10 and 20 and 50% of females beyond the age of 20 lack tusks in Mozambique's Gorongosa National Park. There has never been a male without tusks in the park, indicating that tusklessness is a sex-related characteristic.
According to the New York Times, this finding shows that the tusklessness mutation may result in the death of male elephants. The scientists estimated that before the battle, 18.5% of female elephants lacked tusks. Tusklessness in elephant populations that have been well-protected can be as low as 2%. The majority of females in Gorongosa today lack tusks.
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what 2 properties of the mitochondrial inner membrane allow it to have unusually high metabolic activity?
The two properties of the mitochondrial inner membrane that allow it to have unusually high metabolic activity are the presence of folds called cristae and a high concentration of electron transport chain proteins.
What is the mitochondrial inner membrane?The mitochondrial inner membrane is a very specific membrane that surrounds the mitochondrial matrix, which is where the Krebs cycle, oxidative phosphorylation, and electron transport chain happen.
This membrane is crucial to the metabolic activity of the mitochondria because it is where the vast majority of the ATP that the cell requires is produced. It's also home to the electron transport chain, which is where the vast majority of energy is produced.
The mitochondrial inner membrane is very different from the outer membrane, which is a more porous membrane that helps to maintain the shape of the mitochondria.
The inner membrane, on the other hand, has a variety of specific characteristics that help it to carry out its metabolic function.
What two properties of the mitochondrial inner membrane allow it to have unusually high metabolic activity?There are two key properties of the mitochondrial inner membrane that allow it to have unusually high metabolic activity.
First, the inner membrane has folds called cristae that greatly increase its surface area. This increased surface area allows the inner membrane to hold more of the electron transport chain proteins that are responsible for producing energy.
This, in turn, allows the mitochondria to produce more ATP than it would be able to otherwise.
Second, the inner membrane is home to a high concentration of electron transport chain proteins, which are the proteins responsible for generating the vast majority of the energy that the cell requires.
This high concentration of electron transport chain proteins allows the mitochondria to produce energy at a much higher rate than it would be able to otherwise.
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Coyotes are predators of rabbits, and rabbits eat grass. An ecosystem experiences an increase in the size of its rabbit population. Which change will help the ecosystem maintain homeostasis?
Answer:
Explanation:
An increase in the rabbit population can result in an increase in the coyote population since coyotes prey on rabbits. This increase in the coyote population can then lead to a decrease in the rabbit population as they become preyed upon.
To maintain homeostasis in the ecosystem, one change that can help is the introduction of a predator of the coyote population. This can help control the number of coyotes and reduce the pressure on the rabbit population.
Another change that can help maintain homeostasis is the introduction of a new food source for the coyotes. This can reduce their dependence on rabbits and lower the pressure on the rabbit population.
Alternatively, the ecosystem may adapt naturally over time by altering the dynamics between coyotes and rabbits, such as increasing the rabbit's ability to evade predators or reducing the coyote's population through other means like disease or natural disasters. However, such changes may take longer to occur and may not always result in a balanced ecosystem.
your white blood cells that fight bacterial infections and attack viruses are called: your white blood cells that fight bacterial infections and attack viruses are called: telomeres. lymphocytes. glucocorticoids. cortisols. teratogens.
Lymphocytes are the white blood cells in your body that fight viruses and bacteria.
What do B lymphocytes deliver that battle bacterial contaminations?Antibodies, also known as immunoglobulins, are produced by B lymphocytes. These proteins adhere to particular antigens. After they're made, antibodies typically stay in our bodies in the event that we need to battle a similar microorganism once more.
Are antibodies that combat T lymphocytes produced by B lymphocytes present?The two primary types of lymphocytes are: T cells as well as B cells Antibodies produced by B cells are utilized to combat pathogens, viruses, and toxins. The T cells kill the body's own cells that have become cancerous or infected with viruses.
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what is one difference between bacterial and archaeal flagella? a. bacterial flagella are made up of one subunit; archaeal flagella are made up of multiple subunits b. bacterial flagella are made up of flagellin, archaeal flagella are made up of tubulin c. bacterial flagella are embedded in the plasma membrane, archaeal are not d. bacterial flagella more clockwise, archael flagella move counterclockwise
One difference between bacterial and archaeal flagella is that bacterial flagella are embedded in the plasma membrane, while archaeal flagella are not. The correct option is C.
What is a flagellum?A flagellum is a whip-like structure that some cells use for movement. Some bacteria and eukaryotic cells use these long, thin filaments to travel forward in their environment, while other cells use cilia or pseudopodia.
Both types of flagella are used for motility, but they have different functions and are constructed and regulated in different ways.
Therefore, one major difference between bacterial and archaeal flagella is that bacterial flagella are embedded in the plasma membrane, while in the archae, flagella are not embedded in the plasma membrane.
Therefore, the correct option is C.
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what body system that includes the heart and blood vessels?
The cardiovascular system includes the heart and blood vessels. The heart is a muscular organ that pumps blood throughout the body, and the blood vessels are the tubes through which the blood flows.
The cardiovascular system is responsible for circulating blood, oxygen, and nutrients to the body's cells, as well as removing waste products and carbon dioxide from the body. It plays a vital role in maintaining homeostasis and supporting the body's various physiological functions.
The blood vessels that make up the cardiovascular system include arteries, veins, and capillaries, and these vessels vary in size and structure depending on their location and function. Arteries are the large vessels that carry oxygenated blood away from the heart and towards the body's tissues and organs. Veins, on the other hand, are the vessels that carry deoxygenated blood back to the heart.
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the purpose of the citric acid cycle in cellular respiration is group of answer choices split glucose complete the oxidation of glucose complete the reduction of glucose nothing
The purpose of the citric acid cycle in cellular respiration is to complete the oxidation of glucose.
Cellular respiration is a metabolic process that takes place in cells, resulting in the creation of energy. In the form of ATP (adenosine triphosphate), this energy is used to fuel various cellular activities. The process takes place in both plants and animals, with the ultimate goal of converting food molecules into energy.
The citric acid cycle, also known as the Krebs cycle, is a key metabolic pathway that occurs in the mitochondria of eukaryotic cells. It is critical to the completion of cellular respiration because it breaks down acetyl CoA, which is produced from pyruvate oxidation.
This process ultimately results in the generation of ATP, which is critical to cellular activity. The citric acid cycle completes the oxidation of glucose by breaking down acetyl CoA into citric acid. It completes the energy extraction cycle that begins with the digestion and breakdown of food molecules.
ATP is produced in the citric acid cycle by the oxidation of acetyl CoA. This ATP is used for various cellular activities, including the creation of new cells, cellular respiration, and the repair of damaged cells.
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The primary function of the integument of an ovule is to
A) protect against animal predation.
B) ensure double fertilization.
C) form a seed coat.
D) direct development of the endosperm.
E) produce hormones that ensure successful pollination.
The primary function of the integument of an ovule is to form a seed coat. So the correct answer is option C.
Integument is an outer covering that protects or encloses something. The primary function of the integument of an ovule is to form a seed coat. The integument is the outer covering of the ovule, which encloses the nucellus and the developing embryo sac. In seeds, the integuments are transformed into seed coats after fertilization, protecting the embryo within the seed. The ovule, the female reproductive unit of flowering plants, is formed from the ovary's ovule primordium.
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according to the scientific view, how many years ago did life on earth begin?
According to the scientific view, life on the planet Earth has begin about 3.5 billion years ago.
The methods through which living and fossil creatures have evolved over time, from the first appearance of life on Earth to the present, can be used to readily track the history of life on this planet.
The evidence implies that life has been on Earth before around 3.7 billion years ago, when the Planet was formed. Although there is some evidence of the existence of life as early as 4.1 to 4.28 billion years ago, it is still debatable because it is possible that non-biological processes other than life were involved in the formation of the planet's supposed fossils.
All currently recognized species of creatures share certain similarities, which suggests that they diverged from a common ancestor over the course of evolution over a set amount of time.
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What type of rna carries the instructions for making proteins?
The type of RNA that carries the instructions for making proteins is messenger RNA (mRNA).
During the process of transcription, which occurs in the nucleus of eukaryotic cells and the cytoplasm of prokaryotic cells, DNA is copied into mRNA by an enzyme called RNA polymerase. The mRNA molecule carries the genetic information from the DNA to the ribosomes in the cytoplasm, where it serves as a template for the synthesis of a protein.
The sequence of nucleotides in the mRNA molecule corresponds to the sequence of amino acids that will be incorporated into the protein during translation. Each group of three nucleotides on the mRNA molecule, known as a codon, codes for a specific amino acid.
In summary, mRNA carries the genetic information from DNA to the ribosomes, where it serves as a template for the synthesis of proteins.
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On what area of the body would you not find any sebaceous glands? A. The face B. In the groin area C. on the arms and legs D. On the palms of the hands and soles of the feet
Answer:
You will not find sebaceous glands on D: The palms of the hands and the soles of the feet
Explanation:
They are generally associated with hair follicles. They are present to moisturize and waterproof the skin. You do not have hair on the soles of your feet or the palms of your hand so you would not find sebaceous glands there.
If the frequency of p2 equals 0.49, what is the value of q?
Responses
0.009
0.009
0.3
0.3,
0.7
0.7
1
Answer: q = 0.3
Explanation: According to hardy weinberg principal
p + q =1
p^2=0.49
hence, p=0.7
therefore q= 1-0.7
q=0.3
homeostasis, which is the goal of drive reduction, is defined as
Answer:
Explanation:
Homeostasis is the maintenance of a stable internal environment within an organism, despite changes in the external environment. Drive reduction is a concept in psychology that suggests that organisms are motivated to take actions that reduce their physiological needs and maintain homeostasis.
Therefore, the goal of drive reduction is to reduce the biological drives or needs of an organism, such as hunger or thirst, in order to maintain a stable internal environment and achieve homeostasis. This can be accomplished by taking actions such as eating or drinking to satisfy the body's physiological needs.
In summary, homeostasis is the stable internal environment maintained by an organism, and drive reduction is the process of reducing biological drives to achieve and maintain homeostasis.
Which two molecules are produced by the photosynthetic electron transport chain and used in the Calvin cycle?O ATPO BPGO NADHO APGO GPG
The two molecules produced by the photosynthetic electron transport chain and used in the Calvin cycle are ATP and NADPH.
During the light-dependent reactions of photosynthesis, electrons from water molecules are used to generate ATP and NADPH through a series of redox reactions in the electron transport chain. These energy-rich molecules are then used in the light-independent reactions, also known as the Calvin cycle, to fix carbon dioxide into glucose.
In the Calvin cycle, ATP and NADPH are used to power the reduction of carbon dioxide to carbohydrates. Therefore, ATP and NADPH are essential for the process of photosynthesis, and the products of the electron transport chain are critical for the production of glucose.
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which range is the average pulse rate for infants?
Answer:
100 - 200 beats per minute
Explanation:
The average pulse rate in a infant is 100 to 200 beats per minutes when active and 90 to 160 beats per minute.
the plasma membrane of a muscle fiber is called the
What region of femur forms part of hip joint?
The uppermost region of the femur that forms part of the hip joint is: the femoral head.
The hip joint is formed by the femur and the acetabulum of the pelvis. The femoral head, which is a ball-shaped structure, fits into the cup-shaped acetabulum to form the hip joint. The hip joint is a ball-and-socket joint that connects the femur to the pelvis.
It is one of the largest joints in the human body and is responsible for the movement of the legs. The hip joint has a high range of motion, which allows for walking, running, jumping, and many other movements. It is also a weight-bearing joint, which means that it carries a significant portion of the body's weight.
There are several other regions of the femur that contribute to the hip joint, including the neck of the femur and the greater and lesser trochanters. The neck of the femur is a narrow region that connects the femoral head to the shaft of the femur. The greater and lesser trochanters are bony protrusions that serve as attachment points for muscles that move the hip joint.
In summary, the femoral head is the uppermost region of the femur that forms part of the hip joint. The hip joint is a ball-and-socket joint that connects the femur to the pelvis and is responsible for the movement of the legs. There are several other regions of the femur that contribute to the hip joint, including the neck of the femur and the greater and lesser trochanters.
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What is a single neuron and all the muscle fibers that it contacts called?
A single neuron and all the muscle fibers it contacts is known as a motor unit.
A motor unit is a functional unit of the nervous system, made up of a single neuron and all the muscle fibers it contacts. This neuron is called the motor neuron, and the muscle fibers it contacts are called the muscle fibers.
The motor neuron is responsible for sending electrical signals to the muscle fibers, which causes them to contract. When a motor unit contracts, it produces a single movement, such as arm flexion or leg extension. Motor units allow for precise control of movements, as the brain can activate specific motor units to achieve the desired effect. Without motor units, our bodies would be unable to move in a coordinated fashion.
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what actions could we take to reduce the impact of humans on ocean ecosystems? group of answer choices create marine protected areas where harmful human activities such as fishing are banned by controlling and limiting the use of fertilizers and pesticides in agriculture by enforcing existing laws on fishing quotas and practices and establishing better international agreements reducing the amount of plastic used e.g. plastic bags and packaging all of the above!
Taking all of these actions together can help to reduce the impact of humans on ocean ecosystems and promote a more sustainable and healthy relationship between humans and the ocean.
Creating marine protected areas where harmful human activities such as fishing are banned can help to preserve and protect marine habitats and species, allowing them to thrive and recover from human impact.Controlling and limiting the use of fertilizers and pesticides in agriculture can help to reduce the amount of runoff and pollution that enters the ocean, which can lead to harmful algal blooms, dead zones, and other negative impacts on marine ecosystems.Enforcing existing laws on fishing quotas and practices, as well as establishing better international agreements, can help to ensure that fishing practices are sustainable and do not deplete fish populations or damage marine habitats.Reducing the amount of plastic used, such as plastic bags and packaging, can help to prevent plastic pollution in the ocean, which can harm marine life and ecosystems.What is an ecosystems?
An ecosystem is a community of living organisms (plants, animals, and microbes) interacting with each other and with their non-living (abiotic) environment (such as air, water, soil, and sunlight) in a particular area or region.
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which area of the brain exhibits higher-than-normal activity in many people with ptsd?
The amygdala, located deep within the temporal lobe, detects possible hazards in the surrounding area. Normally, the amygdala is relatively adaptable, but it is overactive in PTSD patients.
The hippocampus, amygdala, and medial prefrontal cortex are thought to be key players in PTSD. An alarm system built into your brain often aids in ensuring your survival. This system becomes extremely sensitive and triggers quickly in those with PTSD.
Your brain's thinking and memory-related regions therefore stop working correctly. A condition of fear dysregulation can be used to describe posttraumatic stress disorder. Many studies indicate that the prefrontal cortex is crucial for processing fear, including how fears are learned and methods for controlling or reducing fear reactions.
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