Final answer:
Messages from the brain to the body's muscles and glands start in the central nervous system (CNS), with the spinal cord playing a key role in conducting these motor impulses.
Explanation:
Messages from the brain to the muscles and glands in the body begin their journey in the central nervous system (CNS). The spinal cord serves as part of the CNS and acts as an information superhighway, conducting motor impulses from the brain via the motor (efferent) nerves. These nerves carry the nerve impulses away from the brain to various parts of the body, such as glands and muscles, allowing for a coordinated response to various stimuli. The nervous system is a vast network that includes not only the CNS but also the peripheral nervous system (PNS), which connects the brain and spinal cord to the rest of the body.
What is the major difference between modified thayer-martin (mtm) and chocolate agar?
The major difference between Modified Thayer-Martin (MTM) agar and Chocolate agar lies in their composition and intended use for the cultivation of different microorganisms.
Modified Thayer-Martin (MTM) agar is a selective medium designed specifically for the isolation of _Neisseria gonorrhoeae_, the bacterium responsible for gonorrhea. It contains antibiotics such as vancomycin, nystatin, and colistin to inhibit the growth of other bacteria and fungi that may be present in the clinical specimen. Additionally, MTM agar is supplemented with hemoglobin and other nutrients to support the growth of _N. gonorrhoeae_.
Chocolate agar, on the other hand, is a non-selective, enriched medium that supports the growth of a wide range of fastidious bacteria, including _Haemophilus influenzae_, _Neisseria meningitidis_, and _Streptococcus pneumoniae_. It is called ""chocolate"" agar because of its brown color, which comes from the addition of heated blood (usually laked horse blood) that provides essential growth factors like hemin and nicotinamide adenine dinucleotide (NAD). Chocolate agar does not contain antibiotics, making it less selective than MTM agar.
In summary, the key differences are:
- MTM agar is selective and contains antibiotics to inhibit the growth of unwanted microorganisms, while chocolate agar is non-selective and does not contain antibiotics.
- MTM agar is specifically designed for the isolation of _Neisseria gonorrhoeae_, whereas chocolate agar is used for a broader range of fastidious bacteria.
- The composition of the two media differs, with MTM agar being supplemented with hemoglobin and chocolate agar containing heated blood products.
Mr. Hammond has a small garden. He planted tomatoes, zucchini, onion, garlic and beans (legumes). When summer is over and he harvested his crops, why did Mr. Hammond pull out all of the plants except the beans? Those he tilled (mixed) back into the soil for next year’s crops. Be sure to explain your answer providing a specific reason.
Beans are the members of the family fabaceae or leguminoceae. The roots of legumes (beans) have root nodules. In the root nodules symbiotic nitrogen fixing bacteria such as Rhizobium is present that fixes atmospheric nitrogen to the soil. No plants can fix atmospheric nitrogen to the soil except nitrogen fixing bacteria. Mr. Hammond tilled (mixed) back beans plants into the soil to get nitrogen fixed in the soil by root nodule bacteria present in beans plants for next year’s crops.
The modern farmers plant legumes in order to influence the growth of nitrogen-rich fertilizers for their other crops. It is not the beans that are producing the fertilizer for the other crops, it is the nitrogen-fixing bacteria, that is, Rhizobium that generally performs the function of nitrogen fixation.
The legumes, like beans, develop in a symbiotic association with soil-dwelling bacteria. The bacteria utilize gaseous nitrogen from the air in the soil and feed this nitrogen to the legumes, in return the plant gives food in the form of bacteria to the bacteria.
When the plant dies, the fixed nitrogen is discharged, making it accessible to other plants, this also facilitates to fertilize the soil.
In each ventricle is a blood vessel network called the ________ that produces cerebrospinal fluid.
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The cumulative biological burden caused by daily adaptation to physical and emotional stress leads to _____.
Most drugs have three different kinds of names. which of them belongs to a specific manufacturer?
Under the influence of antidiuretic hormone (adh), _____ is produced. under the influence of antidiuretic hormone (adh), _____ is produced. urine containing more glucose bloody urine urine containing a lower concentration of urea more concentrated urine less concentrated urine
Under the influence of antidiuretic hormone (ADH), urine containing a lower concentration of urea is produced.
What is ADH?ADH, also known as vasopressin, is a hormone released by the pituitary gland that helps regulate water balance in the body.
When ADH is present in higher levels, it increases water reabsorption by the kidneys, resulting in reduced water loss through urine.
As a result, urine becomes more concentrated with a lower concentration of urea and other waste products.
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How can a forest fire have both beneficial and harmful changes?
Answer:
Explanation:
fires help some plants release their seeds and it clears out the dead plants which allows the forest to grow more in the long run. What can be bad though is that fires can destroy the habitats for different species and as we saw with California, the smoke can make the air quality for breathing organisms very harmful.
Define cephalization. What is its relationship to bilateral symmetry?
Heat and chemical treatments can straighten curly hair. Which functional group is responsible for this property of hair proteins? A.)phosphate group. B.)sulfhydryl group. C.) carbonyl group
The sulfhydryl group in hair proteins is responsible for the property of hair that allows it to be straightened through heat and chemical treatments.
Explanation:The functional group responsible for the property of hair proteins that allows heat and chemical treatments to straighten curly hair is the sulfhydryl group. The sulfhydryl group, also known as the -SH group, plays a crucial role in the formation of disulfide bonds which contribute to the overall structure and shape of hair.
When hair is exposed to heat or certain chemicals, such as those found in straightening treatments, the disulfide bonds in the hair proteins can be disrupted. This allows the hair to be reshaped and appear straight.
An example of a chemical treatment that exploits this property is a keratin treatment, which uses a product containing formaldehyde and heat to break and reform the disulfide bonds in the hair, resulting in straightened hair.
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What is the most important hormone causing an increase in serum ca2+?
The cells of _____ and _____ have modified mitochondria. the cells of _____ and _____ have modified mitochondria. dinoflagellates ... metazoans diplomonads …parabasalids euglenozoans ... alveolates chlorophytes ... ciliates fungi ... stramenopiles
The cells of diplomonads and parabasalids have modified mitochondria.
Diplomonads and parabasalids are species of protists belonging to the supergroup Excavata. These species are mainly heterotrophic predators and parasites.
The mitochondria in diplomonads is modified to mitosome which are non-functional in aerobic respiration, because of which diplomonads perform anaerobic respiration., The modified mitochondria however is involved in iron and sulphur metabolism.
Similar to diplomonads, p[arabasalids also have modified mitochondria. However, in the case of parabasalids, the mitochondria functions anaerobically, that is carries out anaerobic respiration. It is referred to as hydrogenosome because it produce hydrogen gas as a byproduct of the respiration process.
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what happens to the force of gravity between two masses if one mass is increased?
A) it increases
B) it decreases
C) it stays the same
D) it it fluctuates
The force of gravity increases when the mass of one of the objects is increased, due to the direct proportionality between gravitational force and the product of the masses involved, as explained by Newton's law of universal gravitation.
Explanation:When the mass of one object is increased, the force of gravity between that object and another mass also increases. This is described by Newton's law of universal gravitation, which states that the gravitational force (F) between two masses (m1 and m2) is directly proportional to the product of their masses and inversely proportional to the square of the distance (r) between their centers. The formula is F = G * (m1 * m2) / r^2, where G is the gravitational constant.
Given this law, if the mass of one object is doubled while keeping all other conditions the same, the force of gravity would also double. This explains why, with more massive objects, the gravitational pull is stronger. As an example, the gravitational pull of Earth on a spacecraft is greater compared to that on a smaller object like a tennis ball, assuming the distance from the center of Earth is the same.
If two organisms are in the same phylum, which other classification category must they also share?
A.Class
B.Order
C.Kingdom
Answer:
The answer is C-------kingdom.
Explanation:
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Unit 1: Nature of Life
1. Science differs from other disciplines, such as history and the arts, because science relies on ___________ .
• facts
• testing explanations
• observations
• theories
2. A scientific hypothesis ___________.
• can be based on personal beliefs or opinions
• can be tested by experiments or observations
• does not have to be tested to be accepted as correct
• is a proven fact with much evidence to support it
3. How does studying science help you be a better member of society?
• Learning the biases of science will help you know what is right or wrong.
• Understanding how science works will help you make better decisions.
• Memorizing science facts will help you become more intelligent.
• Knowing science will help you live without the aid of technology.
4. Which of the following describes a neutral atom of oxygen?
• 6 protons, 6 neutrons, 6 electrons
• 6 protons, 6 neutrons, 8 electrons
• 8 protons, 8 neutrons, 10 electrons
• 8 protons, 8 neutrons, 8 electrons
5. Hershey and Chase used the 35S isotope to label proteins. How does this isotope differ from the 32S isotope found in greatest natural abundance, and why did they choose 35S instead of 32S? (1 point) (hint: what is an isotope of an element and keep in mind what Hershey and Chase needed their “labeled” protein to do)
• 35S has more protons than 32S; Hershey and Chase used it because it has a greater mass.
• 35S has fewer protons than 32S; Hershey and Chase used it because it is radioactive and can be easily traced.
• 35S has more neutrons than 32S; Hershey and Chase used it because it is radioactive and can be easily traced.
• 35S has fewer neutrons than 32S; Hershey and Chase used it because it has a smaller mass.
6. Rank the following in order from most acidic to most basic
• rainwater, coffee, bleach, soap
• coffee, rainwater, soap, bleach
• soap, bleach, coffee, rainwater
• bleach, soap, rainwater, coffee
7. Which of the following are true concerning living things? Check all that apply. (2 points)
• They contain a vital force absent in nonliving things.
• They are composed of molecules that contain carbon-carbon bonds.
• They undergo chemical reactions to use energy they acquire from the environment.
• They do not require catalysts to sustain their living state.
8. Which of the following does NOT match: The monomer _________ makes up the polymer __________.
• amino acids, protein
• fatty acids, DNA
• glucose, starch
• ribonucleotide, RNA
Unit 2: Cells
9. Which organelles are involved in energy transformations, such as photosynthesis and cellular respiration?
• mitochondria and chloroplasts
• mitochondria and ribosomes
• smooth and rough endoplasmic reticulum
• Golgi apparatus and chloroplasts
10. What happens if you put cells in a concentrated salt solution?
• They shrink as water moves from inside to outside the cells as a result of osmosis.
• They burst as water moves from outside to inside the cells as a result of osmosis.
• No change occurs as water freely diffuses back and forth across the cell membranes.
• The cells expend energy pumping water out in response to the greater external salt concentration.
11. What happens during photosynthesis?
• Heterotrophs consume ATP.
• Heterotrophs produce ATP.
• Autotrophs consume carbohydrates in the form of glucose.
• Autotrophs produce carbohydrates in the form of glucose.
12. Which chemical shown in Figure 8–3 is an electron carrier molecule (the ‘hot potato’ that ‘carries’ electrons)?
• H2O
• carbon dioxide
• NADP+
• oxygen
13. Which of the following is NOT a step in the light-dependent reactions? (Look at the diagram above)
• High-energy electrons move through the electron transport chain.
• Pigments absorb light.
• ATP synthase allows H+ ions to pass through the thylakoid membrane
• ATP and NADPH are used to produce high-energy sugars (glucose).
14. Cellular respiration releases energy by breaking down ____________.
• food molecules
• ATP
• carbon dioxide
• water
15. What are the reactants (ingredients) in the equation for cellular respiration?
• oxygen and lactic acid
• carbon dioxide and water
• glucose and oxygen
• water and glucose
Science relies on observations, a scientific hypothesis can be tested, and studying science helps with decision-making, neutral oxygen atom has 8 protons, 8 neutrons, and 8 electrons, Hershey and Chase used 35S because it is radioactive and can be easily traced, ranking from most acidic to most basic is coffee, rainwater, bleach, soap, living things have carbon-carbon bonds and undergo chemical reactions, fatty acids make up DNA, energy transformation organelles are mitochondria and chloroplasts, cells shrink in a concentrated salt solution, during photosynthesis autotrophs produce glucose, NADP+ is an electron carrier molecule, not a step in light-dependent reactions is ATP and NADPH producing glucose, cellular respiration breaks down food molecules to release energy, reactants in cellular respiration are glucose and oxygen
Explanation:Unit 1: Nature of Life
Science differs from other disciplines, such as history and the arts, because science relies on observations.A scientific hypothesis can be tested by experiments or observations.Studying science helps you be a better member of society by helping you make better decisions.A neutral atom of oxygen has 8 protons, 8 neutrons, and 8 electrons.Hershey and Chase chose to use the 35S isotope instead of the 32S isotope because 35S has more neutrons than 32S and can be easily traced because it is radioactive.The correct ranking from most acidic to most basic is coffee, rainwater, bleach, and soap.The true statements concerning living things are They are composed of molecules that contain carbon-carbon bonds and They undergo chemical reactions to use energy they acquire from the environment.The monomer fatty acids make up the polymer DNA.Unit 2: Cells
The organelles involved in energy transformations are mitochondria and chloroplasts.If cells are put in a concentrated salt solution, they will shrink as water moves from inside to outside the cells as a result of osmosis.During photosynthesis, autotrophs produce carbohydrates in the form of glucose.The chemical shown in Figure 8–3 that is an electron carrier molecule is NADP+.Not a step in the light-dependent reactions is ATP and NADPH are used to produce high-energy sugars (glucose).Cellular respiration releases energy by breaking down food molecules.The reactants in the equation for cellular respiration are glucose and oxygen.Learn more about science relies on observations here:https://brainly.com/question/10925400
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In Stage 1 of his lab, Gunther adds 20 mg of solute into a solution. He stirs it and it completely dissolves. In Stage 2, he adds 20 mg more of solute and stirs, but this time, some settles out. In Stage 3, he then heats his solution, adds 20 mg more,and the solute completely dissolves.
Which best explains his experiment?
A)Stage 1 demonstrated a saturated solution, Stage 2 demonstrated an unsaturated solution, and Stage 3 demonstrated a supersaturated solution.
B)Stage 1 demonstrated an unsaturated solution, Stage 2 demonstrated a saturated solution, and Stage 3 demonstrated a supersaturated solution.
C)Stage 1 demonstrated a supersaturated solution, Stage 2 demonstrated a saturated solution, and Stage 3 demonstrated an unsaturated solution.
D)Stage 1 demonstrated an unsaturated solution, Stage 2 demonstrated a supersaturated solution, and Stage 3 demonstrated a saturated solution.
I think the answer is B) Stage 1 demonstrated an unsaturated solution, Stage 2 demonstrated a saturated solution, and Stage 3 demonstrated a supersaturated solution.
Which is an essential commodity needed for the productive process?
Answer: its labor just got it right on apex
Once researchers identified dna as the unit of inheritance, they asked how information was transferred from the dna in the nucleus to the site of protein synthesis in the cytoplasm. what is the mechanism of information transfer in eukaryotes?
How does temperature change always move from regions of hot to regions of cold?
A) because hotter particles can not slow down
B) because colder particles have more potential energy
C) because kinetic energy is transferred in the collisions of particles
D) because this is the fastest, most efficient means of conducting thermal energy
Final answer:
Temperature change always moves from hot to cold regions because kinetic energy is transferred in the collisions of particles.
Explanation:
Temperature change always moves from regions of hot to regions of cold because kinetic energy is transferred in the collisions of particles. When two substances with different temperatures are in contact, particle collisions occur, resulting in a net flux of heat from the higher-temperature substance to the lower-temperature substance.
For example, if we have a body at a higher temperature (hot) and another at a lower temperature (cold), the particles in the hot body have a higher average kinetic energy. When these particles collide with particles in the cold body, some of the energy is transferred, resulting in a decrease in the average kinetic energy of the particles in the hot body and an increase in the average kinetic energy of the particles in the cold body. This transfer of energy continues until the two substances reach the same temperature.
In summary, the movement of heat from hot to cold regions is due to the transfer of kinetic energy in the collisions of particles.
The swelling and bursting of a cell due to the influx of water is called ______.
After a transurethral resection of the prostate, the retention catheter is pulled taut and secured to the client's leg. the client reports a feeling of pressure and asks why this is necessary. what rationale should the nurse include in a response to this question?
Answer Explanation:
The patient needs to be explained that he needs a bladder catheter that is placed in the bladder to help make the process of draining the urine possible for a few days after surgery while recovering.
The patient who should have a permanent bladder catheter may go through the phases similar tothose that happen in a grieving situation since while accepting the new situation which is uncomfortable.
It is important that the patient does not feel alone in the process when they leave home and that a person educated in the subject periodically evaluates the self-care of the catheter, and that the patient is taught to prevent complications
Organisms that use bulk flow to move oxygen are able to:
Which of the following has mechanical energy? bouncing ball water in a reservoir book on a table person running falling tree
Answer:thats not right it 2 and 3
Explanation:
Changes in the gene pool can occur due to various mechanisms. In 1989, a large oil spill occurred in Prince William Sound, Alaska, when the Exxon Valdez oil tanker ran aground. Approximately 11 million gallons of oil were spilled and spread 1,300 miles along the Alaskan coastline. The damage from the oil spill affected thousands of animals in the area, including killer whales, harbor seals, sea otters, fish, and sea birds. Which mechanism most likely affected the gene pools of the organism populations in the areas around the oil spill? genetic drift gene flow gene mutation genetic variation
In the given case, the spilling of oil influenced many animals in Prince William Sound, Alaska. Due to spillage, many animals in the region comprising harbor seals, killer whales, fish, sea otters, and seabirds got influenced. It can be considered that genetic drift affected the gene pools of the organisms in the regions around the oil spill.
Variation in the relative frequency of different genotypes in a small populace, due to the chance desertion of specific genes as individuals do not reproduce or die is known as genetic drift.
Answer:
The answer is A
Explanation:
A 35-year-old client has been diagnosed with hypertension. the client is a stock broker, smokes daily, and has diabetes. during a follow-up appointment, the client states that regular visits to the doctor just to check blood pressure (bp) are cumbersome and time consuming. as the nurse, which aspect of client teaching would you recommend?
Susan is a geological researcher measuring the rate of removal of phosphorous from sedimentary rock during the phosphorous cycle. What process is Susan investigating?
Answer:
Weathering
Explanation:
Weathering of rocks releases phosphorus in soil. The phosphorus is used by plants and reaches into animal bodies when animals feed on plants and plant products. Part of phosphorus present in soil is carried to water by surface runoff and is incorporated into sediments. Gradually, phosphorus becomes part of sedimentary rocks. Hence, removal of phosphorus from rocks occurs by the process of weathering.
There are a number of lipids that are found in foods and contribute to various functions in the body. triglycerides are the most common lipid found in food and in the body; they consist of a ____________ backbone attached to three fatty acids. fatty acids are classified based on the degree to which the carbon chain is saturated with ____________ . a fatty acid is ____________ if it contains no carbon-carbon double bonds, ____________ if it contains two or more carbon-carbon double bonds, and ____________ if it has only one carbon-carbon double bond. the unsaturated fatty acids can exist in one of two structural forms: the ____________ form occurs when hydrogens on both carbons forming the double bond lie on opposite sides of that bond. when hydrogens on an unsaturated fatty acid lie on the same side of the carbon-carbon double bond, a ____________ formation exists.
Triglycerides consist of a glycerol backbone and three fatty acids. Fatty acids are categorized as saturated, polyunsaturated, or monounsaturated, based on the number of carbon-carbon double bonds. The position of hydrogens in relation to these bonds determines whether the fatty acid is in a cis or trans form.
Explanation:Triglycerides are the most common lipid found in both food and in the human body. They consist of a glycerol backbone attached to three fatty acids. Fatty acids are classified based on the extent to which the carbon chain is saturated with hydrogen. A fatty acid is described as saturated if it does not contain any carbon-carbon double bonds, polyunsaturated if it contains two or more carbon-carbon double bonds, and monounsaturated if it only has one carbon-carbon double bond. Unsaturated fatty acids can exist in two structural forms: In the trans form, hydrogens on both carbons that form the double bond lie opposite from each other. If hydrogens of an unsaturated fatty acid are situated on the same side of the carbon-carbon double bond, a cis formation is created.
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Triglycerides are composed of a glycerol backbone attached to three fatty acids. Fatty acids can be classified based on their saturation level: saturated, monounsaturated, or polyunsaturated. Unsaturated fatty acids can exist in the cis or trans configuration.
Explanation:Triglycerides are the most common lipid found in food and in the body. They consist of a glycerol backbone attached to three fatty acids. Fatty acids are classified based on the degree to which the carbon chain is saturated with hydrogen. A fatty acid is saturated if it contains no carbon-carbon double bonds, polyunsaturated if it contains two or more carbon-carbon double bonds, and monounsaturated if it has only one carbon-carbon double bond. The unsaturated fatty acids can exist in one of two structural forms: the trans form occurs when hydrogens on both carbons forming the double bond lie on opposite sides of that bond. When hydrogens on an unsaturated fatty acid lie on the same side of the carbon-carbon double bond, a cis formation exists.
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The diagram shows a nucleic acid in the shape of a double helix. mc008-1.jpg Which sugar is present in the nucleic acid that is represented in the diagram?
Answer - Deoxyribose
When land inhabited by an organism is destroyed or altered, ______________ occurs?
The answer is Extinction. Destruction of a species habitat causes the reduction in the numbers of a population to a point where the reproductive rates are so low to sustain the population. Extinction may indicate the death of the last member of a population. A renowned example of an extinction event is that of dinosaurs whose habitat was destroyed by a meteorite strike.
Rna in cells differs from dna in that ___________________. select one:
a. it is single-stranded and cannot form base pairs
b. the sugar ribose contains fewer oxygen atoms than does deoxyribose
c. it is single-stranded and can fold up into a variety of structures
d. it contains the base uracil, which pairs with cytosine
RNA differs from DNA in that it is single-stranded and can fold into a variety of structures. This feature allows it to perform a vast array of functions inside the cell.
Explanation:RNA in cells differs from DNA in that it is single-stranded and can fold up into a variety of structures. This is indeed one of the key features that makes RNA unique from DNA. Unlike DNA, which is double-stranded, RNA is single-stranded, which allows it to fold into a multitude of different three-dimensional shapes. These complex shapes allow RNA to perform a wide range of functions inside the cell. However, it should be noted that RNA does still form base pairs within itself due to its folded nature, with the base Adenine (A) pairing with Uracil (U), and Cytosine (C) pairing with Guanine (G).
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