Answer:
It is called absorption. Digested food enters the blood or lymph through the small intestine wall by diffusion or active transport
Answer:
Diffusion
Explanation:
Diffusion is the movement of a substance from an area of high concentration to an area of low concentration. It can occur all over the body including the large intestine when food enters to blood stream and in the alveoli in the lungs where gases diffuse into the blood stream. Hope this helps :)
Which is an advantage of a natural-gas-burning power plant over an oil-burning power plant?
A.It releases more energy.
B.It uses a renewable resource.
C.It releases fewer pollutants.
D.It does not release greenhouse gases
Answer: C.) It releases fewer pollutants.
Explanation: Natural-Gas has less Co2 that is released when it burns, meaning that it’s a better option for a fuel source if you don’t want to have pollutants that coal or oil release. Although both fuel sources produce similar amounts of energy anyhow.
Would the atmospheric concentration of oxygen increase or decrease after the bubonic plague?
Answer:The Great Oxidation of Earth’s atmosphere about 2.3 billion years ago began a series of geochemical events leading to elevated oxygen levels for the next 200 million years, with a collapse to much lower levels as these events played their course. This sequence of events is represented in rocks from the Republic of Gabon. We show oxygenation of the deep oceans when oxygen levels were likely their highest. By 2.08 billion years ago, however, oxygen dropped to levels possibly as low as any time in the last 2.3 billion years. These fluctuations can be explained as a direct consequence of the initial oxygenation of the atmosphere during the Great Oxidation Event.
Explanation:
The larger molecules can not cross the membrane without the added help of the purple channel protein. Why is their movement across the membrane considered passive transport?
1. their movement across the membrane is not considered passive transport. passive transport only includes diffusion and not the use of channel proteins.
2. passive transport is used to describe any movement across the membrane. since the larger molecules can cross the membrane, this makes their movement a form of passive transport
3. they are crossing passively because they are not attacking the cell membrane
4. no energy input is involved in their movement across the membrane. passive transport requires no energy to be involved.
Larger molecules are unable to cross the membrane without the assistance of the purple channel protein. Their movement across the membrane requires no energy input; passive transport requires no energy. Thus option 4 is correct.
What is passive transport?Passive transport is defined as the movement of ions and molecules along a concentration gradient in the absence of external energy.
It is also defined as a type of membrane transport in which substances are moved across cell membranes without the use of energy.
Active transport is defined as a process in which molecules move from a lower concentration region to a higher concentration region.
It can also be defined as the process of transporting molecules across a cellular membrane using cellular energy.
Thus, larger molecules are unable to cross the membrane without the assistance of the purple channel protein. Their movement across the membrane requires no energy input; passive transport requires no energy. Thus option 4 is correct.
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which of the following crosses lipid bilayers the fastest? a small, polar molecule like water a large, polar molecule like glucose a small, nonpolar molecule like oxygen (o2) a sodium ion
A small, nonpolar molecule like oxygen crosses lipid bilayers the fastest.
The cell membrane is made of a lipid bilayer through which the passing of small, nonpolar molecules is easy. This is because the small, nonpolar molecules are soluble in the lipid bilayer.
Molecules like oxygen can easily pass through the cell membrane. However, it is difficult for large, polar molecules to move across the lipid bilayer because polar molecules are not soluble in the lipid bilayer. The smaller, polar molecules that are uncharged can still pass through the cell membrane.
It is due to the hydrophobic nature of the lipid bilayer that polar molecules face difficulty in passing through the cell membrane.
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What does the value 61 signify about the comparable rrna gene sequences in comamonas testosteroni and escherichia coli?.
That 61% of the 617 nucleotide positions are the same in both species.
Comamonas testosteroni :
In clinical practise, Comamonas testosteroni has rarely been observed as an infectious agent. The organism has a low virulence potential and causes human disease only infrequently. Comamonas species have a wide environmental distribution and can survive for long periods of time in hospital environments. We present a previously healthy adolescent with peritonitis as a complication of perforated appendicitis caused by a polymicrobial aetiology that included C. testosteroni.
Aerobic, Gram-negative, motile, pink-pigmented, oxidase-positive bacilli, Comamonas species grow well on standard bacteriological media. This group includes four species: Comamonas terrigena, C. testosteroni, C. denitrificans, and C. nitrativorans. The organisms have low virulence and rarely cause human disease. The most common pathogen in the genus is C. testosteroni. This organism is known as a 'testosteroni' because it can grow solely on testosterone-containing media. E. coli is a Gram-negative, facultative anaerobic, rod-shaped coliform bacterium of the genus Escherichia that is commonly found in the lower intestine of warm-blooded organisms.Most strains of E. coli are harmless and even beneficial to your digestive tract. However, some strains can cause diarrhoea if you consume contaminated food or drink contaminated water.
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Why is facilitated diffusion used to transport bicarbonate across a membrane?
Diffusion of solutes through transport proteins in the plasma membrane is referred to as facilitated diffusion. Passive transport is a subset of facilitated diffusion. Because the solution is traveling down the concentration gradient, assisted diffusion is still passive transport even when it incorporates transport proteins.
We employ assisted diffusion because...
Therefore, polar and charged molecules including ions, amino acids, nucleosides, and carbohydrates can traverse the plasma membrane due to facilitated diffusion. Carrier proteins and channel proteins are the two main groups of proteins that mediate assisted diffusion.
Even though ions are small molecules, the charge they carry prevents them from diffusing through the lipid bilayer of biological membranes. As a result, assisted diffusion is used to transfer them along their gradient of concentration.
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Explain the role of the cell membrane.
Briana finds pieces of her hair in her brush. Why is she still able to grow more hair?.
Answer:
Brushing your hair stimulates blood flow to the scalp, which helps bring more nutrients to follicles to promote hair growth.
Explanation:
dipalmitoylphosphatidylcholine, also known as dppc, is a component of lung surfactant that aims to reduce surface tension of mucus and liquid within the lungs. in order for this phospholipid to work effectively, it must be modified in vivo. predict the hydrolyzed version of dppc and briefly explain how its monomers are effective in acting as a surfactant. 2. when recovering soap from the final step of the reaction, there can be some discrepancies in your mass recording that deviate from the true value. explain what would cause this difference in theoretical mass of soap vs. recovered mass of soap if
dipalmitoylphosphat Contains dipalmitoylphosphatidylcholine been added to surfactant? Idylcholine, sometimes referred to as dppc, is a lung surfactant component that works to lower surface tension.
The cohesive state that develops at a liquid-liquid or liquid-gas contact is referred to as surface tension. This happens in the lungs at the point where the alveolar membrane and the airway meet. Alveoli are drawn together as a result of increased cohesion caused by increased surface tension.
How does surface tension affect lung compliance?Surfactant synthesis lowers surface tension within the alveoli to prevent collapse. Surface tension can be reduced to more readily obtain compliance. Together, the chest wall and lungs make up the combined compliance system.
Dipalmitoylphosphatidylcholine, a phospholipid particularly, makes up the majority of the lipid content and is what gives surfactant its biophysical properties.
Water has a high surface tension due to the strong cohesive interactions between its molecules. Surfactants disrupt these interactions as they absorb. Surface tension will drop because the intermolecular interactions between the water molecule and the surfactant are substantially lower than those between two water molecules.
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how that food molecules and oxygen transfer energy to the cell to support life’s processes, including controlling body temperature, despite losing energy as heat.
Cellular respiration is the process in which the food molecule along with oxygen is broken which provides energy to the muscle and tissue.
Why molecule is transported to the cell?Cellular respiration is a chemical manner in which the bonds of meal molecules and oxygen molecules are broken and new compounds that can deliver strength to muscle tissue are shaped. Cell respiratory releases the electricity had to maintain frame temperature notwithstanding ongoing electricity switch to the surrounding environment.
During cellular respiration, the energy which is present in the food is converted into the king of energy that is used by the body's cells. In this process, glucose and oxygen are converted into carbon dioxide and water, and the whole energy is transferred to ATP. Chemical respiration is the process in which the organism combines oxygen and produces energy which is required for the body's cells.
So we can conclude that cellular respiration is the process in which the food molecule along with oxygen is broken which provides energy to the muscle and tissue.
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A concept that asserts fundamental principles of justice and implies the
administration of laws that do not violate the sacredness of private rights
is called:
O Due Process of Law
O Definite Sentence
O Dual Courts
O Durham Rule
A concept that asserts fundamental principles of justice and implies the administration of laws that do not violate the sacredness of private rights exists comprehended Due Process of Law.
What is meant by Due Process of Law?To ensure that all of the person's legal rights are honored, the state must apply all relevant legal laws and principles to the case. This is known as due process of law. Due process safeguards a person's rights and balances the power of the law.
The U.S. Supreme Court gives these provisions a broad interpretation and comes to the conclusion that they offer three types of protection: procedural due process (in civil and criminal proceedings); substantive due process, which forbids the use of vague laws; and they serve as the means of incorporating the Bill of Rights.
The Fifth Amendment is divided into five rights or protections: the right to a jury trial when you are accused of a crime; the right to be innocent unless proven guilty; the right to an impartial jury; the right not to be forced to testify against your will; and the right to a fair trial.
Therefore, the correct answer is option a) Due Process of Law.
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How does a volcano affect local population? 4 sentences
Volcanoes affect people because it produces toxic volcanic ashes and problems to the respiratory system, eyes, and skin. It also causes injuries and affects transport and communication problems.
How volcano affects the local population?Volcanoes emit hot, dangerous gases, ash, lava, and rock that are powerfully devastating. People have died from volcanic blasts. Volcanic discharge can result in additional threats to health, such as floods, rockslides, power outages, drinking water contamination, and wildfires. When volcanoes erupt they can spew hot, dangerous gases, ash, lava, and rock that can cause tragic loss of life of people and property, especially in heavily populated areas.
Volcanic activities and wildfires greatly affected 6.2 million people and caused about 2400 deaths between 1998-2017. During volcanic eruptions and their instant aftermath, increased respiratory system morbidity has been observed as well as humanity among those affected by volcanic eruptions.
So we can conclude that Although several factors activate a volcanic eruption, three predominate
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what is the population density if ther are 200 deer in 20 sqiare kilomemter
The QDMA spatial map depicting deer density (deer per square mile) was digitized across the eastern United States
which of the statements below correctly describe the structure of a double-stranded dna molecule? multiple select question. the two strands of dna are held together by phosphodiester bonds between bases on opposite strands it contains one strand of dna the bases in the dna molecule point outwards, away from the central axis of the molecule bases on opposite strands are hydrogen bonded together dna strands form a helical structure
Option B and D are correct. between bases on opposite strands it contains one strand of DNA the bases in the DNA molecule point outwards, together DNA strands form a helical structure.
A DNA molecule is composed of two linked strands that wind around each other to form a twisted ladder in the shape of a helix. Each strand has an alternating backbone of sugar (deoxyribose) and phosphate groups. Each sugar has one of four bases attached to it: adenine (A), cytosine (C), guanine (G), or thymine (T) (T). A) double antiparallel helical strands are the best way to describe the secondary structure of DNA. DNA has a double helix structure, which is made up of two parallel strands that are joined in the middle and twist around each other. It most accurately describes the structure of a DNA molecule. Furthermore, DNA is not a single strand and does not contain amino acids.
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Nirenberg and leder used synthetic ‘triplets’ of rna. The purpose of these short rna molecules was to.
The purpose of these short rna molecules was to take the place of part of an mRNA within the ribosome.
In the Nirenberg and Leder experiment, these synthetic RNA triplets were intended to represent the codons that would be present in a genuine mRNA strand. It was discovered that these artificial "codons" may cause precise interaction of amino acid-charged tRNA with ribosomes.
What is Nirenberg and Leder experiment?
In the cell-free systems, Leder and Nirenberg utilized very small synthesized RNA sequences (three nucleotides). These reduced-length fragments were still detectable and long enough for the ribosome to interact with the specific kind of tRNA molecule that is complementary to the one codon. The experiment's crucial step was labeling one kind of amino acid at a time, followed by passing the mixture through a Millipore filter. The ribosomes with the bonded triplet could not pass through this unique filter, but unbound tRNAs could. After then, the sample's radioactivity was checked. The matching amino acid was added if radioactivity was discovered in the sample that did not pass through the filter.
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Can you list 1-6 Energy in the form of?
1. Energy in the form of Light (Solar energy) is converted into Glucose and Oxygen by photosynthesis.
2. Glucose
3. Oxygen
4. Energy in the form of ATP molecules drives cellular functions.
5. Carbon Dioxide
6. Water
Green plants and certain other species employ a process called photosynthesis to create nutrition from carbon dioxide and water. In most cases, the green pigment chlorophyll is used in photosynthesis in plants, and oxygen is produced as a byproduct.
What is Cellular Respiration?Cellular respiration is the method by which biological fuels are converted into a form that can be oxidized in the presence of an inorganic electron acceptor, such as oxygen, to provide a significant quantity of energy that powers the large-scale synthesis of ATP. Adenosine triphosphate (ATP) is created by cellular respiration, a series of metabolic reactions and events that take place in an organism's cells in order to remove waste products after converting chemical energy from foods into ATP. As a result of the catabolic events that occur during respiration, energy is released when big molecules are broken down into smaller ones. One of the main processes a cell uses to release chemical energy to power cellular activity is respiration. Many biochemical stages, some of which are redox reactions, contribute to the overall reaction.The delayed, controlled release of energy from the succession of reactions makes cellular respiration a peculiar combustion reaction, despite the fact that it is strictly one.To learn more about Cellular Respiration, refer to:
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please Explain how living and non-living things could interact in a salt water ecosystem.
The salinity of the water in the ecosystem must be within range in order to allow the organisms to survive.
What is ecosystem?Recall that the ecosystem is a unit that is composed of living and non living parts that are interdependent on each other and there is an exchange of materials and energy within the system. The energy is passed across the system via the food chains and the food webs that exists in the ecosystem.
In this case we have a salt water system. Note that the salinity of the ecosystem affects the kind of organisms that can survive in the system. Thus, we know that the salinity is a non living factor but it does affect how the organisms in the salt water thrives.
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Question 7(Multiple Choice Worth 2 points)
(02.07 MC)
Which of the following steps is required after biological processes have broken down organic material in wastewater?
A-Water is placed in an aeration basin to increase oxygen.
B-Primary clarifiers separate solids from the wastewater.
C-Filtration removes rocks and pebbles from the water.
D-Disinfection purifies water before it is released.
The step required after biological processes have broken down organic material in wastewater is: (C) Filtration removes rocks and pebbles from the water.
Biological process of waste water treatment is the method that makes the use of microorganisms to break down the organic waste present in the water. It is also called the conventional method and is the most commonly used one.
Filtration is the second last step of biological process where the suspended solids like tiny rocks and pebbles are removed before the purified water is sent for disinfection. It is an optional step because if there are no suspended particles than the water is subjected to direct disinfection.
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While viewing a specimen under high power of a compound light microscope, a student noticed that the specimen was out of focus. Which part of the microscope should the student turn to obtain a clearer image under LOW power?
Answer: fine adjustment
Explanation:
To obtain a clearer image under low power on a compound light microscope, the student should adjust the focus using the coarse focus knob.
The compound light microscope typically has two focusing knobs:
The coarse focus knobThe fine focus knob.The coarse focus knob is used to make larger adjustments to the focus.
When the student noticed that the specimen was out of focus under high power, they can switch to low power and then use the coarse focus knob to bring the specimen into focus.
By turning the coarse focus knob clockwise or counterclockwise, the student can move the objective lens closer to or farther away from the specimen, which will help them obtain a clear image.
Thus, the learner should use the coarse focus knob on a compound light microscope to change the focus in order to get a crisper image at low power.
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What type of organic molecules do these represent
The organic molecules that are shown in the image are called biological macromolecules.
What are biological macromolecules?Let us note that a macromolecule is a molecule that is composed of smaller units. These smaller units are called monomers. It then follows that we can form the macromolecule by the agglomeration of many units of the smaller molecules that we call the monomers.
Biological molecules are the kind of molecules that play various roles in the body. It also implies that almost all of the biological molecules are found almost to exist exclusively in the bodies of the different species of living organisms.
The role that the molecules pay range from the fact that are important in the supply for energy in the cells of living things to the fact that they could be used as the building blocks of the nuclei acids. The biomolecules that are sugars steroids and fats.
The molecules In the question all all organic molecules and are found to be useful in the body hence they are all generally referred to by the generic name of biological macromolecules.
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craniostenosis is the premature fusion of one or more skull sutures in an infant. predict what problem may arise if the skull sutures prematurely ossify during infancy.
The problem which may arise if the skull sutures prematurely ossify during infancy is that the baby's head will stop growing in only that part of the skull.
What is a Suture?This is referred to as the tissues which are present in the skull and helps connects the bones present in the head together and in some instances they ossify prematurely during infancy which is known as craniostenosis.
When this occurs, the baby's head will stop growing in only that part which may lead to an abnormal shape and also different forms of neurological issues and complications may arise.
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You are studying a gene that, when mutant, causes oligodendrocytes to enwrap sections of axon so that nodes of ranvier are more closely spaced. What is the likely effect on nerve impulses?.
Answer:
They will travel slower.
Explanation:
how do the ions move between the pond water and the plant cells using active transport?
Answer:
For plants to take up mineral ions, ions are moved into root hairs, where they are in a higher concentration than in the dilute solutions in the soil. Active transport then occurs across the root so that the plant takes in the ions it needs from the soil around it. Active transport in animals
Explanation:
which type of fiber could be considered the longest? group of answer choices postganglionic parasympathetic preganglionic parasympathetic preganglionic sympathetic postganglionic sympathetic
Preganglionic parasympathetic is the type of fiber that could be considered the longest.
The gastrointestinal tract is supplied by preganglionic neurons from both the cranial and sacral divisions of the parasympathetic nervous system. With the exception of a few numbers that innervates the mouth and pharynx, the cranial parasympathetic preganglionic nerve fibers move along the vagus nerve.
Preganglionic fibers are all cholinergic (i.e., they employ acetylcholine as a neurotransmitter) and myelinated, whether they are in the sympathetic or parasympathetic divisions.
Because they are situated inside or close to the effector organs, parasympathetic ganglia have lengthy preganglionic fibers and small postganglionic fibers. Given their paravertebral chain location, sympathetic ganglia have lengthy postganglionic fibers and small preganglionic fibers.
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12. Near the equator, rising air is associated with a pressure zone known as the
O
O
tropical low
tropical high
equatorial low
equatorial high
Near the equator, rising air is associated with a pressure zone known as the equatorial low.
What is equator?
Equator: A large circle that circles the planet evenly in all directions and that is perpendicular to the axis of the planet. The geographic Equator, also known as the terrestrial Equator, is the imaginary line on the surface of the Earth from which latitude is calculated; it is the line at 0° latitude. It separates the Earth into the Northern and Southern hemispheres.
A pressure region known as the equatorial low is connected to rising air close to the equator. This type of zone experiences rainy weather and weak wind movement. One of the hottest places in the planet is there. A low-pressure area is also produced by it. Equatorial lows and doldrums are some names for it.
Hence Equatorial low is the appropriate answers.
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In what phase of meiosis are sister chromatids separated and pulled to opposite ends of the cell? anaphase i anaphase ii metaphase ii metaphase i
The correct answer for this question is option b Anaphase ii for the question
The sister chromatids are divided and dragged to the cell's opposing ends during meiosis' Anaphase II. The two chromatids of each chromosome shift to opposing poles on the spindle following the separation of the centromeres (to which spindle fibres are linked) during metaphase II. The dissociated chromatids are now referred to as individual chromosomes.
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Please answer the two questions in the photo! (will mark brainliest if correct)
Answer:
d and b are the correct answers
In the citric acid cycle, succinate dehydrogenase catalyzes the conversion of succinate to fumarate. This reaction is inhibited by malonate, which resembles succinate but cannot be acted upon by succinate dehydrogenase. Increasing the ratio of succinate molecules to those of malonate in the reaction reduces the inhibitory effect of malonate. What role does malonate play with respect to succinate dehydrogenase?.
The role that malonate play with respect to the enzyme succinate dehydrogenase is as an enzyme inhibitor.
What are enzymes?Enzymes are biological catalysts that act to alter the rate of the biochemical reactions occurring in the body.
Enzymes are very important in metabolic reactions as, without these enzymes, most of all the metabolic reactions occurring on them will never be possible.
Most enzymes are proteins and possess the following properties;
they are specific in their actionthey are denatured by heat and too-high or too-low pHthey speed up reaction rates but remain unchanged at the end of the reactionthey can be inhibited or modifiedThe citric acid cycle has many enzymes that act on different substrates to form products.
However, if a particular molecule binds to the enzyme, but does not result in the formation of a product, but rather prevents the binding of the enzyme-substrate, that molecule is an enzyme inhibitor.
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how does compartmentalization enable the evolution of larger cells?
Answer:
Separating the cells into different parts allows for the formation of specific microenvironments within the cell. This compartmentalization helps the organelles and cell components to function within their own boundary. So, eukaryotic cells evolved to become super-efficient spaces where multiple activities take place.
why are vesicles used to transport proteins out of a cell?
they can communicate with other cells.
they protect the proteins from damage.
they contain enzymes needed for protein synthesis.
they signal the cell to open its membrane.
Answer: they protect the proteins from damage.
Explanation: they are way too large to pass directly through membrane
The vesicles are used to transport proteins out of a cell as they protects the protein from the damage due to external environmental conditions. Thus, the correct option is B.
What are protein vesicles?Proteins are synthesized in the ribosomes of rough endoplasmic reticulum. These proteins are then transported to their destination covered inside the vesicles.
Vesicles are the small structures within a cell which consist of the fluid enclosed by a lipid bilayer that is involved in transport of proteins and other molecules, controlling buoyancy, and the enzyme storage.
Proteins which are transported within the vesicles is based upon the selective packaging of the intended cargo proteins into the vesicles that are recognized and fused with the appropriate target membrane only such as cell membrane.
Therefore, the correct option is B.
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