This is false that Smaller neurons require more current to change their membrane potential.
A potential gradient known as membrane potential causes ions to passively migrate in one direction: positive ions are drawn to the "negative" side of the membrane, while negative ions are drawn to the "positive" side. Human life is impossible without membrane potentials. Over their membrane, every living cell maintains a potential difference. Simply said, differences in the concentration and permeability of significant ions across a membrane are what cause membrane potential.
A change in membrane potential results from a change in ion permeability. The membrane potential moves closer to the ion's Nernst equilibrium potential as permeability to that ion increases. The membrane potential is shifted away from the ion's Nernst equilibrium potential as permeability to that ion decreases.
The less probable it is that the arriving ions will collide with something that might cause them to bounce back, the bigger the axon's diameter of a neuron. Positive ions must continuously move away from the cell body in order for the action potential to exist, and this is made much simpler in a bigger axon.
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Which of the following is a possible function of a protein?
A. Providing long-term energy storage
B. Insulating organisms
C. Storing genetic information
D. Sending signals across the organism
Answer:
C
Explanation:
Answer:
The correct answer is D, Sending signals across the organism.
Explanation:
A gardener uses a chemical to kill the bacteria in the soil of his flowerbed. how will this plan affect the growth of his flowers? a. the flowers will grow better because the bacteria fix oxygen for the flowers. b. the flowers will not grow as well because bacteria are needed to fix nitrogen. c. the flowers will grow better because the bacteria are harmful to the flowers. d. the flowers will not grow as well because the bacteria eat the dead roots.
The flowers will not grow as well because bacteria are needed to fix nitrogen
Numerous plants have symbiotic interactions with bacteria, which provide them with essential nutrients like nitrates. His flowers' growth will be limited and they can even perish if all the bacteria are gone.
What are Good bacterias ?Friendly bacteria or good bacteria can help plants grow by helping the plants to obtain nutrients such as phosphorous and nitrogen, or by defending the plants from other microbes that can make them sick.
Beneficial good bacteria for plants produce chemicals and hormones that stimulate growth. Beneficial bacteria help prevent infections from pathogens by coating the root surfaces and triggering svstemic disease resistance.By this way the use of bacteria killing chemical will all kill good bacteria which helps plant growth.Learn more about Good bacteria here:
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How would the presence of an extra solute - glucose – in the urine affect the urine is osmotic pressure and tendency to draw water by osmosis?
When the extra amount of glucose is present then the reabsorbtion capacity of kidney glucose remains in the filtrate , which is causes an increase in osmotic pressure causing potassium and water to move out into the urine.
Hyper-tonic additional glucose stimulates osmotic fluid that increase plasma and blood volumes. Glucose provides nutritional aspects and also used as a metabolic testing. Decreased intravascular osmotic pressure from decreased concentration of plasma protein , particularly.
Osmotic pressure is required to prevent the net movement of water into solute of the solution when the solution are separated by a selectively permeable membrane.Serum albumin protein found in blood plasma that helps in maintain osmotic pressure between blood vessel and tissues.
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Which food is rich in complex carbohydrates? Which food is rich in complex carbohydrates? cheese wheat bread olive oil honey
Wheat bread is rich in complex carbohydrates
Sugar molecules are arranged in lengthy, intricate chains to form complex carbohydrates. Foods such as peas, beans, whole grains, and vegetables include complex carbohydrates. The body converts simple and complex carbs to glucose (blood sugar) for use as fuel.
complex carbohydrates are classified as oligosaccharides, which have three to ten monosaccharides bound together, and polysaccharides, which have more than ten monosaccharides bonded together. These complex carbohydrates are made up of dietary fiber, glycogen, and starches.
Consume extra fruits and vegetables to increase your intake of complex carbohydrates and healthful nutrients. Don't forget to include legumes like beans, lentils, and dried peas in your diet as well as whole-grain grains, bread, and cereals.
According to the Dietary Guidelines for Americans, between 45 and 65 percent of daily calories should come from carbs. That is 225 to 325 grams of complex carbohydrates each day.
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Which brain structure maintains homeostasis and influences blood pressure, heart rate, digestive activity, breathing rate, and body temperature?
Hypothalamus maintains homeostasis and influence blood pressure, heart rate, digestive activity, breathing rate, and body temperature.
What is the hypothalamus?A region of the forebrain situated below the thalamus of the brain.
The main function of hypothalamus is to control and coordinate the center of brain.
Hypothalamus helps to keep the body stable that is known as homeostasis.
The hormones such as thyrotropin-releasing hormone(TRH), gonadotropin-releasing hormone (GnRH) are the important hormones released from hypothalamus.
Thus,homeostasis, blood pressure, heart rate, digestive activity, breathing rate, as well as body temperature is maintained by hypothalamus.
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About how many cells are in the human body? this sounds like a complex question, but you can make a pretty good estimate with a little bit of background knowledge and what you have learned thus far!
There are approximately 30 trillion cells present in the human body.
How many different kinds of cells are there in an adult human body?Humans are intricate, multicellular entities. Our bodies contain "specialized" cells. This implies that every cell type has a distinct and important role. Because of this, each of the body's 200 different types of cells has a unique structure, size, shape, and function, as well as a variety of organelles.
Human cells are not the only ones in our bodies, of course. According to recent studies, the average human contains about 38 trillion bacteria. With this, the overall number of cells now exceeds 68 trillion (human or not).
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In the light reactions, pigment molecules in photosystems capture photons of light, and energy from light becomes stored as potential energy in ______.
In the light reactions, pigment molecules in photosystems capture photons of light, and energy from light becomes stored as potential energy in ATP and NADPH.
What is light reaction?The photosynthetic mechanism known as the "light reaction" transforms solar energy into chemical energy in the form of NADPH and ATP.The production of NADPH and high-energy ATP molecules occurs during the light-dependent stage, in which chlorophyll absorbs light energy. This excitation of some pigment-molecule electrons to higher energy levels causes them to leave the chlorophyll and move through a succession of molecules.The photolysis reactions, also referred to as light reactions, transform solar energy into chemical energy in the form of ATP and NADPH.The thylakoid membranes of organelles called chloroplasts are where the light reactions occur. The light reactions are largely controlled by photosystems, sizable complexes of proteins and pigments (light-absorbing molecules) that are designed to capture light.
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9. Technology can bring both good and bad things. Building a vertical farm can increase food
supplies in cities (good), but it may cause unemployment in rural areas (bad). Give another
example of both the good and bad sides of a technological advancement
Positive effects of Technology. Less expense, better efficiency, contact channels, increase in networks, etc. Negative effects of Technology. Social isolation, job loss, adverse health effects, scams, etc.
What are the positive effects of technological advancement?In addition to enhancing business strategy, technology has also made trade easier, more effective, and more cost-efficient. In the days before the Internet, businesses were limited to running ads in newspapers and magazines. If they had the funding, they could run ads on TV or radio as well.
Examples of such new technologies contain carbon capture and storage systems, more efficient irrigation techniques, essential medicines, household water purification machines, and manufacturing processes that minimize destruction and corruption
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People who have low maoa gene expression have been identified as those who are most likely to____________?
Explanation:
those with the low activity variant of maoa who were exposed to maltreatment in childhood were significantly more likely to report a range of antisocial behaviors and related outcomes including property and violent offending hostility and symptoms of conduct disorder
During the measurement of blood pressure with a sphygmomanometer, diastolic blood pressure is recorded when:_____.
During the measurement of blood pressure with a sphygmomanometer, diastolic blood pressure is recorded when you no longer hear the beating sounds. This is your diastolic pressure.
While measuring the diastolic blood pressure watch the mercury level in the sphygmomanometer.
Note the sphygmomanometer reading (the number the mercury has reached) when the pulse reappears. Record this as the systolic pressure.
Deflate the cuff further until the pulse disappears. Record this reading as the diastolic pressure.
Blood pressure is measured in units of millimeters of mercury (mmHg). If someone has a reading of 132/88 mmHg, they have a systolic blood pressure of 132 mmHg and a diastolic blood pressure of 88 mmHg.
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The arrangement of subunits in the pdh (pyruvate dehydrogenase) complex ensures that?
The arrangement of subunits in the pdh (pyruvate dehydrogenase) complex ensures that in the inner mitochondrial membrane.
By turning pyruvate into acetyl-coenzyme A, the pyruvate dehydrogenase complex (PDHc) connects glycolysis to the citric acid cycle. The pyruvate dehydrogenase complex (PDHc), consists of the three enzymatically active subunits pyruvate dehydrogenase, dihydrolipoyl transacetylase, and dihydrolipoyl dehydrogenase, which links the citric acid cycle and subsequent oxidative phosphorylation to the pathways for glycolysis, gluconeogenesis, and lipid and amino acid metabolism. E1 is a part of PDH and catalyzes pyruvate's oxidative decarboxylation. Dyhydrolipoyl transacetylase, also known as E2, catalyzes the addition of an acetyl group to coenzyme A to produce acetyl CoA. The oxidative decarboxylation of pyruvate, a -keto acid, by the pyruvate dehydrogenase complex produces carbon dioxide (CO2) and the acetyl group of acetyl-coenzyme A or acetyl-CoA with the release of two electrons, carried by NAD, in five successive processes. Learn more about pyruvate dehydrogenase here brainly.com/question/16346028#SPJ4
Water-storing plants and deeply rooted shrubs are plants that characterize?
Desert vegetation or xerophytes includes bushes with deep roots and plants that store water.
Another name for desert plant:
A plant species known as a xerophyte has evolved to live in environments with little fluid water, like a desert or an area surrounded by ice or frost in the Mountains or the Polar regions. Cacti, pineapples, and various Gymnosperm species are a few well-known instances of xerophytes.
Xerophytes have different adaptations to their morphological characters (morphology) and basic physiological functions (physiology) that allow them to store significant amounts of water and save it during dry seasons. During prolonged periods of severe dehydration or evaporation of their organs, some creatures can live, and at those times, their biochemical function may cease. Xeromorphic flora has such biological and morphological modifications.Learn more about xerophyte here:
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The parts of the subunits of ribosomes are assembled in the ______ while the subunits are assembled into ribosomes in the ______
The parts of the subunits of ribosomes are assembled in the nucleolus while the subunits are assembled into ribosomes in the cytoplasm.
What is ribosome ?In eukaryotes, ribosomes are located in cytoplasmic organelles, other type of ribosomes present in cell are chloroplast and mitochondrial ribosomes.
Ribosome have a sedimentation coefficient such as 80 S is composed of 40 S and 60 S subunits.
In prokaryotic cells, it is 70 S type consist up 30 S and 50 S subunits.
In both prokaryote and eukaryotes majority of ribosome is composed up proteins that and the remaining part is ribonucleic acid.
Hence nucleolus and cytoplasm are correct answers.
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You see a bee pollinating a flower. This is an example of which ecosystem service?
Bee pollination is an example of regulating ecosystem services.
Ecosystem services provide beneficiaries for the living of human beings.The most significant services including providing provisionals( food), regulating the essential process for the ecological balance.Bee pollination in natural and agricultural ecosystem supports the food production and regulating the genetic flows in plant species.Learn more about ecosystem services on https://brainly.com/question/8513228
What outcome results from improper washing of a tube or well after adding the enzyme–antibody conjugate in an elisa system?
What outcome results from improper washing of a tube or well after adding the enzyme–antibody conjugate in an elisa system? Result will be falsely increased
What is elisa system?The enzyme-linked immunosorbent assay (ELISA), first described by Eva Engvall and Peter Perlmann in 1971, is a widely used analytical biochemistry technique. The assay employs a solid-phase type of enzyme immunoassay (EIA), utilizing antibodies against the target protein to find the presence of a ligand (often a protein) in a liquid sample. In addition to being utilized as a quality control check in numerous industries, ELISA has been used as a diagnostic tool in biotechnology, plant pathology, and medicine.
Antigens from the sample to be examined are coupled to a surface in the simplest ELISA. The surface is then covered with a corresponding antibody so it can bind the antigen.
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Claire had a heavy breakfast early in the morning. then she went to the gym to exercise. after the gym, claire went to class. while exercising, the body requires a continuous supply of energy and uses up blood sugar at a faster rate. how will hormones maintain the sugar balance in the body from breakfast until claire has lunch? high blood sugar secretion of glucagon secretion of insulin glycogen breaks down to glucose
What is secreted in response to high blood sugar?
Diabetes Basics: The pancreas' islet cells secrete the hormones insulin and glucagon. Both of them are secreted in different directions in response to blood sugar levels. The beta cells of the pancreas, an islet cell type, ordinarily release insulin.How does high blood sugar affect the body?
The blood vessels that provide blood to essential organs can be damaged by hyperglycemia, which raises the risk of kidney disease, heart disease, stroke, visual issues, and nerve problems.
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Answer:A
Explanation:
A landscaper accidentally had their leg crushed by a tree. their femur was impacted with such force that a section of the bone completely shattered into fragments. what type of break is this?
Type of break is cervical and lumbar curvatures.
If there are no ossification centers, there are no osteoblasts, no osteocytes, no spongy bone, which in turn means no compact bone thus no flat bones which serves as a protection layer.
Osteoclasts are large bone cells with up to 50 nuclei. They remove bone structure by releasing lysosomal enzymes and acids that dissolve the bony matrix. Intramembranous ossification directly converts the mesenchymal tissue to bone and forms the flat bones of the skull, clavicle, and most of the cranial bones. While bone resorption is performed by large immune cells called osteoclasts, osteoblasts, a type of specialized connective tissue-related cells, is responsible for making new bone.
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Many plants have lipids in large amounts in their seeds. what is the function of the lipids to these plants
0il bodies are lipid (mainly triacylglycerols) storage compartments that occur primarily in seeds and senescing leaves. Seed oil bodies develop from the endoplasmic reticulum in embryo cells during seed maturation and are degraded during seed germination and subsequent seedling growth.
What are Triacylglycerols and it's function?
Triacylglycerols are the major oils used for energy and metabolic substrates during seedling growth. Oil bodies also function as subcellular factories that produce antifungal compounds in senescing leaves and perilesional leaf areas infected with fungi.The majority of plant lipids act as energy stores (e.g., triacylglycerols in seeds) or as plant membrane components (e.g., galactosyl glycerides in chloroplast membranes and phosphoglycerates in non-chloroplast membranes). Furthermore, surface lipids such as waxes and cutin provide an impervious barrier on the plant surface to reduce water loss and to provide protection against plant pathogens and toxins. Lipids are found in relatively small amounts in temperate grasses and generally decrease as the plant matures.To learn more about lipids: https://brainly.com/question/3498396
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In response to a state of shock, what mechanisms does the sympathetic nervous system utilize in the four distinct stages to help correct the lack of perfusion? select all that apply.
Answer:
Increase in heart rate.
Increase in respiratory rate.
What is a sympathetic nervous system?
The peripheral nervous system and the central nervous system are the two primary divisions of the human nervous system, as shown in the image below.
Two additional parts make up the peripheral nervous system. Skeletal muscle movement that is voluntary is controlled by the somatic nervous system. The somatic nervous system is at action when you choose to bring your coffee cup to your lips; it is doing so by engaging the necessary muscles. The autonomic nervous system, which regulates functions outside of our conscious awareness, is the second part of the PNS.
The parasympathetic nervous system and the sympathetic nervous system are additional divisions of the autonomic nervous system (which you are interested in). They have negative consequences on one another, to put it very broadly. While the parasympathetic neural system largely works to calm the body, the sympathetic nervous system often stimulates the body. Although this is a streamlined perspective, it might be helpful to think about it this way.
The sympathetic branch of the autonomic nervous system speeds up heartbeat, slows down digestion, opens up airways in the lungs to allow for greater airflow, triggers the liver to release glucose, and relaxes the bladder. All of this wakes up the body and gets it ready to "fight."
The parasympathetic division, in contrast, slows the heart rate, tightens the bronchi in the lungs, and boosts blood flow to the digestive system. The phrase "relax and digest" has been used to describe it.
The parasympathetic nervous system's nerves originate from the brainstem and spinal cord, as shown in the diagram. The "ganglia" (collections of cell bodies) of the sympathetic nervous system, however, exist beyond the spinal cord.
It's interesting to note that whereas the sympathetic nervous system activates the body using both acetylcholine (ACh) and norepinephrine (NE), the parasympathetic nervous system solely needs ACh to affect organs.
The sympathetic and parasympathetic nerve systems are autonomic, which means we typically have minimal control over them.
A nutritional drink was said to contain simple sugars and proteins. Describe how you could find out if these food substances were present in the drink
Answer:
2. If critical thinking is so important, why is it that uncritical thinking is so
common? Why is it that so many people including many highly educated and
intelligent people observed to be uncritical one? Discuss the reasons?
The ability of the brain to change its anatomy over time, within limits, is known as ____.
The ability of the brain to change its anatomy over time, within limits , is known as Neuroplasticity, which is also known as neural plasticity or brain plasticity. The ability of neural networks in the brain to change through growth and recognizance.
Its the ability of human brain to change its activity in response to intrinsic or extrinsic stimuli by reorganizing its function and structure. Learning, experience and memory formation or as result of damaged the brain.
According to study music , especially when combined with dance,art,gaming and exercise which helps in promote neuroplasticity and its improve movement and coordination which help in strengthen memory of the brain.
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Select all the correct answers. looking at the phylogenetic tree, which three statements can you make about the interconnectedness of the species a, b, c, d, and e? phylogenetic tree showing x and y branching out from a common root. x branches out into a and b. y branches out into c on one leaf and d and e together on the other leaf. species a and c may have shared features from a common ancestor. species c is more related to species d than species d is related to species e. species b and c are more closely related than species c and d. species b and e may have shared features from a common ancestor. species a is more related to species b than species b is related to species c.
Species A and C may have shared features from a common ancestor
Species B and E may have shared features from a common ancestor
Species A is more related to species B than species B is related to (any of the other species)
What is Phylogenetic tree ?A phylogenetic tree is a visual representation of the evolutionary connections between various creatures. Phylogenetic trees are theories rather than proven truths.
A phylogenetic tree's branching pattern illustrates how many species or other groups developed from a number of common predecessors.From this phylogenetic tree we can see that all five species have a shared distant, common ancestor, meaning that they all evolved from a single species. Because they all share the same common ancestor, there's every chance that the species A and C, or species B and E, share some features from their common.Learn more about Phylogenetic tree here:
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Answer:
- Species A and C may have shared features from a common ancestor
- Species B and E may have shared features from a common ancestor
- Species A is more related to species B than species B is related to (any of the other species)
Explanation:
6. what structural modification of certain tubule cells enhances their ability to reabsorb substances from filtrate?
The presence of dense microvilli in the epithelial cells of the proximal convoluted tubule enhances their ability to reabsorb substances from the filtrate. This structure is also called brush border epithelium.
What is tubular reabsorption?The movement of water and solutes from the proximal convoluted tubule back into the bloodstream is called tubular reabsorption.
Water and solutes from the proximal convoluted tubule (PCT) are transported to the bloodstream in bulk and thus most of the reabsorption occurs via the PCT.
These tubules reabsorb about 60% of water and 90% of bicarbonate. They also reabsorb almost 100% of the glucose and amino acids.
This reabsorption takes place by two routes. First is the paracellular route in which solutes move between cells via the intracellular route. Second is the transcellular route in which solutes move through the cells.
Therefore, the structural modification helping the proximal convoluted tubule cells to enhance their ability to reabsorb substances from filtrate is the presence of microvilli.
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Determine if the following statement is true or false and why. “Primary and Secondary Consumers lose about 30% of the energy they absorb from food as heat.” A. False, it should read “Only Secondary Consumers lose about 30% of the energy they absorb from food as heat.” B. False, it should read “Primary and Secondary Consumers lose about 5% of the energy they absorb from food as heat.” C. True D. False, it should read “Primary Consumers lose about 5% of the energy they absorb from food as heat, while Secondary Consumers lose 30% as heat.”
True. The correct option is C.
Energy transfer in the ecosystemEnergy is transferred from lower to higher trophic levels of the food chain in any ecosystem.
In other words, energy is transferred when primary consumers feed on producers, when secondary consumers feed on primary consumers, and so on.
However, when energy is transferred through feeding from lower to higher trophic levels, a certain percentage of the energy is lost to the surroundings as heat.
In actual fact, scientists believe that about 90% (and not 30%) of the energy is lost as heat to the surrounding. Only about 10% of the energy is converted to useful energy.
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mould consists of large network of threads known as ______
Answer: Hyphae
Explanation: The hyphae are the large network threads.
The medulla is considered part of the brain rather than the spinal cord because it ____.
Answer:
is contained in the skull
state 2 main distinguishing characteristics of Rhizobium
Answer:
i know only one
Explanation:
rhizobium foun in the root of legumonus plant like pea and this help to plant grow
rhizobim convert nitrogen into nitrates during thunderstorm
The perivascular feet of the ______ help create a blood-brain barrier. multiple choice question.
The perivascular feet of the endothelial cells help create a blood-brain barrier.
What are endothelial cells?Endothelial cells can be defined as those type of cells found in the inside lining of blood vessels, lymph vessels, and the heart.
Interestingly, the major function of the edothelial cells is that they release substances that control vascular relaxation and contraction as well as enzymes that control blood clotting, immune function and platelet (a colorless substance in the blood) adhesion.
So therefore, the perivascular feet of the endothelial cells help create a blood-brain barrier.
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Which type of amino acid replacement is least likely to result in the disruption of protein structure and function?
In order to determine whether the new amino acid being replaced has distinct properties, we must first record which features of the amino acid each location possesses. At physiological pH, the side chains of some amino acids will be negatively charged, others positively charged, and yet others will be neutral.
Methionine and arginine have chemically distinct properties. While arginine is a positively charged amino acid and would presumably be facing the protein outside, methionine is a nonpolar side chain that would likely be hidden inside the protein core. The structure of a protein would likely be altered or disrupted if arginine were substituted for methionine.
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Which are tunics (layers) that make up the gastrointestinal wall?
The gastrointestinal wall is composed of four layers or tunics:
MucosaSubmucosaMuscularis mucosa SerosaThe innermost tunic of the wall is known as the mucosa or mucous membrane layer. The digestive tract's lumen is lined with it. The mucosa comprises epithelium, a layer of lamina propria, a loose layer of connective tissue, and the muscularis mucosa, a thin layer of smooth muscle.
The mucosa is surrounded by a substantial layer of loose connective tissue known as the submucosa. Blood arteries, lymphatic vessels, and neurons are also present in this stratum. The adventitia is a connective tissue that makes up the digestive tract's outermost layer above the diaphragm. It is referred to as serosa below the diaphragm.
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