manatees are large, gentle, slow-moving sea creatures found along the coast of florida. many manatees are injured or killed by boats. here is a scatterplot showing the relationship between the number of boats registered in florida (in thousands) and the number of manatees killed by boats for the years 1977 to 2015.
Answers
Using correlation coefficients, as the scatter-plot is increasing linearly, it is found that the value of r is greater than 0 and close to 1.
What is Correlation Coefficient?This is a metric that measures the correlation between two variables and takes values between -1 and 1.
If positive, it means the relationship is positive and directly proportional.If negative, it is inversely proportional. The relationship is strong if the absolute value of the correlation coefficient is greater than 0.6.Researching the problem on the web shows that the relationship is modeled by increasing scatterplots. Therefore r > 0. Few points oscillate, indicating a strong relationship, so r is close to 1.
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The complete question is as follows:
Manatees are large, gentle, slow-moving sea creatures found along the coast of florida. many manatees are injured or killed by boats. here is a scatterplot showing the relationship between the number of boats registered in florida (in thousands) and the number of manatees killed by boats for the years 1977 to 2015. is r>0 or r<0? closer to r=0 or r=+- 1? explain your reasoning
Related Questions
Write out RNA strand that would be transcribed from following DNA sequence:
TTC AGC CAG
Answers
3. A strain of cells undergoes a mutation that increases the permeability of the inner
mitochondrial membrane to hydrogen ions.
a) What effect would you expect this mutation to have on the process of cellular
respiration? 12
b) Assuming the mutant cells can survive, how might the metabolic requirements of
these cells differ from those of a non-mutant strain of the same variety? 12
Answers
A mutation that involves the permeability of the inner mitochondrial membrane to protons (H+) will affect the amount of ATP. If mutant cells can survive, then they will need more energy to create a suitable gradient.
Cellular respiration is a series of metabolic reactions by which aerobic cells can generate energy in the form of ATP by using the chemical energy stored in the foods.
Cellular respiration can be divided into three sequential stages: glycolysis, the Krebs cycle (also called the acid citric cycle) and oxidative phosphorylation.
During oxidative phosphorylation, the transport of electrons across the inner mitochondrial membrane is coupled to the generation of an electrochemical proton (H+) gradient, which is then used to generate ATP by means of a protein complex known as ATP synthase.
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The *blank* converts food into energy. It is found in both plant cells and animal cells.
what is the *blank*?
Answers
Answer:
Glucose?
Explanation:
Animal cells use mitochondria to convert food into energy, and plant cells use both chloroplasts and mitochondria to make energy from light, air, and water.
Answer: Mitochondria
what is the function of the capillaries? to temporarily store blood that isn't being circulated to carry blood toward the heart to act as a zone of diffusion between blood and tissues to carry blood away from the heart
Answers
The function of capillaries is to act as a zone of diffusion between blood and tissues.
Capillaries are tiny, blood vessels with thin walls that link arteries and veins. Because of the thinness of its walls—just one cell—the blood and tissues around it may exchange nutrition, oxygen, and waste products.
Throughout the body, capillaries are essential for the supply of nutrients and oxygen to cells. Oxygen and nutrients permeate from the blood and into the surrounding tissues as it passes through capillaries. Furthermore, wastes like carbon dioxide and metabolic byproducts seep into the blood from the tissues and are then transported elsewhere for processing and removal.
In conclusion, capillaries' main job is to serve as a point of exchange between blood and tissues, enabling the delivery of nutrients and oxygen as well as the elimination of waste.
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What term refers to a nerve signal moving through a nerve cell?
A.sliding filament model
B.humoral response
C.action potential
D.cell mediated
Answers
Answer:
Option C is correct ( Action potential)
Explanation:
a momentary reversal in electrical potential across a plasma membrane (as of a neuron or muscle fiber) that occurs when a cell has been activated by a stimulus.
A toad is brought into a new ecosystem. It is stronger than the toads that
already live there and reproduces quickly. Which is the best way to describe
these toads in the new ecosystem?
A. Invasive species
B. Native species
C. Keystone species
D. Cyclical species
Answers
Answer:
a
Explanation:
newer, stronger, and reproduces more
this means that the other animals would have to compete and they usually lose.
Invasive species is the best way to describe toads in the new ecosystem. Therefore, option (A) is correct.
What are invasive species?Invasive species are non-native organisms that are introduced to an ecosystem and have negative impacts on the environment, economy, or human health. They typically outcompete native species, reproduce quickly, and lack natural predators in the new ecosystem.
The fact that the toad is stronger than the toads already living there and reproduces quickly suggests that it may outcompete native toads for resources and space. This could potentially lead to a decline in the population of native toads, which could have negative effects on the ecosystem.
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You observe that your cat sprawls on the cool tile floor in the kitchen on hot summer days and curls up in front of a heating vent in the winter. This suggests that
A)Cats have trouble thermoregulating
B)Something is wrong with the cat's hypothalamus
C)Behavior can play a role in homeostasis
D)Cats know how to find the most comfortable place in a house.
Answers
Answer:
A. Cats have trouble thermoregulating
Explanation:
Your friend is on the cross country running team. They tell you they need to "carbo-load" ahead of their big race in a couple days as they want to store extra carbohydrates in their muscles.
1. Identify what macromolecule should they eat more of over the next couple of days? Identify that molecule's function.
2. Identify what food from the selection should they eat. (Hint: There is more than one correct answer)
3. Explain how you know that food has the macromolecule they need. (Think about what test will you use to support your statement)
HELPPPPPPP
Answers
Answer:
This question is incomplete
Explanation:
This question is incomplete because of the absence of some options
1. There are four major macromolecules found in nature; Carbohydrates, proteins, lipids and nucleic acid. The macromolecule that assists with the production of energy for immediate energy and glycogen storage (which is the storage of "energy" in the muscle) is carbohydrates.
2. The foods that should be selected here are food that are rich in carbohydrate. Examples of such food include Rice, cassava, yam and plantain.
3. To test for the presence of carbohydrate in the food sources chosen in (2) above, iodine test can be used. The choice of iodine test is because the food sources mentioned above contains complex carbohydrates. Few drops of a solution of iodine should be added to a sample of the food, if the colour of the iodine on the sample turns blue black, then that confirms the presence of complex carbohydrates in the food.
all of the following are correctly matched except group of answer choices a) th1: t-bet. b) treg: foxp3. c) th17: rorγt. d) th2: bcl6. e) th2: gata3.
Answers
The answer is e) th2: gata3. All of the answer choices are correctly matched except for th2: gata3, which is only one of the transcription factors associated with th2 cells.
The other options are correctly matched as th1 is associated with t-bet, treg with foxp3, th17 with rorγt, and th2 with bcl6. Gata3, on the other hand, is associated with th2 cells, but it is not the only transcription factor linked to this subset. Th2 cells are known to express multiple transcription factors, including Gata3, c-Maf, and JunB. While Gata3 is critical for th2 cell differentiation, its absence does not completely abrogate th2 cell development, indicating that other transcription factors can compensate for its loss.
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At which level is the MOST amount of ecosystem energy found?
- tertiary consumer
- secondary consumer
- primary consumer
- producer
Answers
the answer is producer
Answer:
producer
Explanation:
In all the ecological pyramids, producers (organisms that produce their own food) are found at the lowest trophic level. This trophic level contains the highest amount of energy.
The energy in each trophic level of an energy pyramid is just 10 percent of the energy in the level below it. What accounts for the decrease in energy from the lowest level to the highest level of an energy pyramid?
Which of the below is an example of a chemical that plants, algae, and animals all need to survive and grow?
carbon dioxide
oxygen
sunlight
(This is 7th grade science)
Answers
Answer:
b
Explanation:
Hexokinase catalyzes the phosphorylation of glucose from ATP, yielding glucose-6-phosphate and ADP. Calculate the overall DG° for this reaction and the Keq for this reaction.ATP ADP + Pi ;DG°= -30.5 kJ/molglucose-6-phosphate glucose+ Pi ; DG° = -13.9 kJ/mol
Answers
The overall DG° for this reaction and the Keq for this reaction would be 16.6 kJ/mol and 1.7 x 10^-5.
Calculating DG° and Keq for the reaction:
Based on the given information, we can calculate the overall DG° for the reaction catalyzed by Hexokinase as follows:
DG° = DG°f (products) - DG°f (reactants)
DG° = (-13.9 kJ/mol) - (-30.5 kJ/mol)
DG° = 16.6 kJ/mol
The positive value of DG° indicates that this reaction is not thermodynamically favorable under standard conditions.
We can also calculate the equilibrium constant (Keq) for this reaction using the equation:
DG° = -RT ln Keq
where R is the gas constant (8.314 J/mol.K) and T is the temperature in Kelvin (assumed to be 298 K at standard conditions). Substituting the values, we get:
Keq = e^(-DG°/RT)
Keq = e^(-16600 J/mol / (8.314 J/mol.K * 298 K))
Keq = 1.7 x 10^-5
The low value of Keq indicates that the reaction heavily favors the formation of glucose-6-phosphate over glucose and ATP under standard conditions, which is necessary for the continuation of the glycolysis pathway.
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A gene is inducible and under negative control. Which of the following pairs will allow expression of this gene?A. Activator + repressorB. Activator + corepressorC. Repressor + inducer D. Repressor + corepressor
Answers
Negative control and induction of a gene. This gene can be expressed if an activator and a repressor are present. Gene transcription is always in the "on" state when there is inducible negative regulation. Hence (a) is the correct option.
By itself, the regulatory protein attaches to the operator site to prevent transcription and turn it off. The protein responsible for negative regulation of gene expression either prevents RNA polymerase from binding to a promoter (transcription initiation block) or prevents the elongation phase of transcription.The lac repressor protein is a tetramer composed of four identical subunits that prevents the lac operon from transcribing. The lacI gene, which is upstream of the lac operon and has its own promoter, codes for the lac repressor.
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When Vitamin D binds to VDR in an enterocyte, all of the following happen EXCEPT:
A. Calcium absorption is enhanced
B. Osteocalcin is carboxylated and activated
C. Synthesis of calcium transporters is increased
D. Synthesis of calbindin is increased
Answers
When Vitamin D binds to VDR in an enterocyte, all of the following happen EXCEPT B. Osteocalcin is carboxylated and activated.
When Vitamin D binds to VDR in an enterocyte, calcium absorption is enhanced, synthesis of calcium transporters is increased, and synthesis of calbindin is increased. However, the carboxylation and activation of osteocalcin are not directly related to Vitamin D binding to VDR in enterocytes. Vitamin D hormone is located in deep pocket. VDR contains two domains: a ligand-binding domain (LBD) that binds to the hormone (grey) and a DNA-binding domain (DBD) that binds to DNA. The VDR protein attaches (binds) to the active form of vitamin D, known as calcitriol. This interaction allows VDR to partner with another protein called retinoid X receptor. About 50% of dietary vitamin D is absorbed by the enterocytes and is transported to the blood circulation via chylomicrons.
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anybody can answer these ?.
Answers
Answer:
1. infection or inflammation in your body.
2. immune system and skeletal system
3. RBCs carry oxygen throughout the body, while WBCs fight off infection. RBCs are also smaller and have a concave shape, while WBCs are larger and have different shapes. Finally, RBCs contain hemoglobin, while WBCs do not.
4. Their primary function is to prevent and stop bleeding
5. If one of your blood vessels gets damaged, it sends out signals to the platelets. The platelets then rush to the site of damage and form a plug (clot) to fix the damage. The process of spreading across the surface of a damaged blood vessel to stop bleeding is called adhesion.
6. Upon activation, platelets expose a variety of membrane receptors, and release soluble mediators that regulate inflammation and other immune responses
Explanation:
Hope this helps! =D
MArk me brianliest! =D
What role does a nucleus play in cellular respiration
Answers
Which of the following is NOT one of the four macromolecules that make up cells?
Answers
Answer:
can you give the choices
Which unit of measurement best matches the size of microorganisms
Answers
Answer:
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
Explanation:bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb
When forest land is cleared for human use, the loss of trees can lead to other changes to Earth's surface. Which of the
following processes is most likely to occur after land has been cleared of its trees?
Answers
Answer:
Global warming
Increase in sea level
Depletion of ozone layer
spread of disease
What causes the plates in Earth's crust to move?
0 Ocean currents
O Solar energy
Convection cells
O Sea floor spreading
Answers
Which statement is FALSE about the Cell Cycle? Question 4 options:
A. During Prophase, the cell fully splits into a parent and a daughter cell.
B. Most of the cell's life is spent in Interphase, growing larger.
C. The stages of the cell cycle repeat themselves.
D. The cytoplasm divides during the process called cytokinesis.
Answers
Answer:
the answer is A since the cell splits into two only during the cytokinesis
Answer: I belive its A
Explanation:
When aqueous solutions of the various anions and cations were mixed, precipitates formed because:
a. a few aqueous solutions can contain more than one cation or anion
b. the anions precipitated as solid metals
c. the solubilities of cations were decreased by the other cations
d. the solubility product of a compound was exceeded
Answers
When aqueous solutions of the various anions and cations were mixed, precipitates formed because:
d. the solubility product of a compound was exceeded.
Precipitates form in a solution when the concentration of ions exceeds their solubility product constant (Ksp), which is the maximum concentration of a solute in a solution at which it remains in equilibrium with its solid phase. When the Ksp is exceeded, the excess ions combine to form a solid precipitate. This occurs regardless of whether the aqueous solutions contain one or more cations or anions. Therefore, options a, b, and c are incorrect.
When a compound is added to water, it can dissolve to a certain extent, which depends on the temperature, pressure, and the presence of other solutes. The concentration of the dissolved ions in the solution, which is in equilibrium with the solid compound, is known as the solubility.
The solubility product constant (Ksp) is the equilibrium constant for the dissolution of a sparingly soluble compound in water, and it is defined as the product of the concentrations of the ions raised to their stoichiometric coefficients, each raised to the power equal to the number of ions in the balanced equation.
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Sarah was testing paper towels to see which brand was the strongest. She used five brands of towels in her experiment. She wet the towels and then used them to hold beans. She counted the number of beans the wet paper towels could hold without tearing. When the experiment was completed, Sarah compared the towel strength using a bar graph. What was her label on the X-axis?
Answers
Answer:
I think it is 6 I think maybe
Answer: Explanation:
on the x-axis is the paper towels. (1, 2, 3, 4, 5)
y-axis will be the beans, seeing how much it held on those 5 towels.
Describe the positive and negative outcomes of biotechnology, specifically addressing genetically
modified crops.
Answers
The scientist Konstantin Mereschkowsky knew in the early 1900s that plants make their own food by using sunlight. He also saw tiny parts in plants called chloroplasts that do not appear in any animals. He hypothesized that chloroplasts are what help plants make food. After many more observations of all types of plants and animals, scientists are convinced today that chloroplasts make food for plants.
Answers
Answer:
Explanation:c
Answer:
c
Explanation:
What type of cell and how many are produced after Meiosis?
A. Diploid - 4
B. Haploid - 2
C. Diploid - 1
D. Haploid - 4
Answers
Answer:
D. Haploid - 4
Explanation:
Hope this helps
olfactory receptors are embedded in the group of answer choices papillae. olfactory bulb. olfactory epithelium. basilar membrane.
Answers
Olfactory receptors are embedded in the olfactory epithelium. The correct option is c.
Olfactory receptors, responsible for detecting and transmitting odor signals to the brain, are embedded in a specialized tissue called the olfactory epithelium. The olfactory epithelium lines the nasal cavity and is located high up in the nasal passage. It contains millions of specialized olfactory receptor cells, which are equipped with receptor proteins that can detect specific odor molecules.
The olfactory epithelium consists of several layers of cells, including the olfactory receptor cells, supporting cells, and basal cells. The olfactory receptor cells have small hair-like extensions called cilia that project into the mucus lining the nasal cavity. These cilia contain the olfactory receptors, which are protein molecules capable of binding to specific odor molecules.
When odor molecules enter the nasal cavity during inhalation, they dissolve in the mucus and bind to the olfactory receptors on the cilia of the olfactory receptor cells. This binding triggers a series of biochemical events, resulting in the generation of electrical signals. These signals are then transmitted to the olfactory bulb, a structure located at the base of the brain, where further processing and interpretation of the odor information occur.
In summary, olfactory receptors, responsible for detecting odors, are embedded in the olfactory epithelium, a specialized tissue lining the nasal cavity. The olfactory epithelium plays a crucial role in capturing odor molecules and initiating the transmission of odor signals to the olfactory bulb. Option c is the correct one.
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the transition from an aquatic environment to a terrestrial environment required the development of ________, which kept plants from drying out when exposed to air.
Answers
Answer:
Ask your teacher for the answer!!
Explanation:
its better than getting cautght
According to the Lab Safety Sheet for the b-galactosidase assay lab, it is okay to use chloroform at your bench work station as long as you always use the dropper bottle and wear gloves.
True or False
Answers
Chloroform should not be used at a bench work station even with precautions. Chloroform is a hazardous chemical with potential health risks, including toxicity and carcinogenicity.
It requires proper ventilation and should be handled in a fume hood. The use of a dropper bottle and gloves alone is insufficient to ensure safety. Following proper lab safety protocols is crucial to minimize risks and protect individuals from exposure to hazardous substances. It is important to consult the lab safety guidelines and adhere to the recommended procedures for handling chemicals like chloroform.
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Which genes are turned on or off In a nerve cell?