A relatively impenetrable attachment which is present between two epithelial cells which are formed by membrane proteins which interlock somewhat like a zipper is known as a tight junction.
Hence, the correct option is option c. Tight junction
Tight junctions, which are also known as the occluding junctions or the zonulae occludentes, are basically multiprotein junctional complexes whose major function is to prevent any possible leakage of the water as well as the solutes and also seals between the epithelial cells.
These tight junctions also play a very critical role in maintaining the structure as well as the permeability of endothelial cells. Tight junctions may also sometimes serve as leaky pathways and they do this by forming selective channels for small cations, anions, and also water.
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extensively discuss haemolysis
Hemolysis means the destruction or breakdown of red blood cells that results in the release of hemoglobin into the surrounding fluid, and there are many types of hemolysis, such as extrinsic hemolysis and intrinsic hemolysis.
What is the significance of the hemolysis?There are two kinds of hemolysis, such as extrinsic hemolysis, in which the RBC breaks down due to physical trauma, exposure to certain drugs or chemicals, etc., while in intrinsic hemolysis the RBC breaks down due to genetic mutations or other factors.
Hence, hemolysis means the destruction or breakdown of red blood cells that results in the release of hemoglobin into the surrounding fluid, and there are many types of hemolysis, such as extrinsic hemolysis and intrinsic hemolysis.
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If a DNA sample were composed of 20% guanine, what would be the percentage of cytosine? B) 30 C) 60 D) 20 (A)
If a DNA sample were composed of 20% guanine, the percentage of cytosine will be option D) 20.
One of the four nucleotide bases in DNA, along with adenine (A), cytosine (C), and thymine, is guanine (G). Guanine nucleotides on one strand pair with cytosine bases on the other strand in a double-stranded DNA molecule.
By joining with guanine and creating the genetic code contained in both DNA and RNA, cytosine plays a crucial part in the formation of base pairs. Because of its chemical makeup and capacity to join with guanine to create a component of the sugar-phosphate backbone of DNA and RNA, cytosine is referred to as a nucleotide base.
The question is incomplete, find the complete question here
If a DNA sample were composed of 20% guanine, what would be the percentage of cytosine? A) 40 B) 30 C) 60 D) 20
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What does an apoenzyme require to become a holoenzyme?
Answer:
Apoenzyme needs binding with non proteinaceous small molecules called cofactors to become active. When apoenzyme binds with cofactor, the complex is known as holoenzyme. Holoenzyme is catalytically active to initiate the chemical reaction. The substrate binds with the holoenzyme, not with the apoenzyme.
Explanation:
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a young man who ran 6 miles a day throughout high school is injured during his first season running cross country in college, and must rest for three months, then gradually begin exercising again. the skeletal muscle size in his lower limbs decreases during this prolonged period of inactivity. the organelles that break down his muscle protein are group of answer choices nuclei. peroxisomes. centrosomes. lysosomes. ribosomes.
A young man who ran 6 miles a day throughout high school is injured during his first season running cross country in college, and must rest for three months, then gradually begin exercising again. the skeletal muscle size in his lower limbs decreases during this prolonged period of inactivity. the organelles that break down his muscle protein are: lysosomes.
Lysosomes are membrane-bound organelles found in the cytoplasm of cells, containing hydrolytic enzymes which is able to break down and recycle cellular components that includes proteins.
During periods of inactivity and muscle disuse, the muscle cells in the lower limbs are not being used for a prolonged period, so the body initiates autophagy, where the lysosomes can break down the muscle protein. This results in a decrease in skeletal muscle size in the lower limbs.
Nuclei, peroxisomes, centrosomes, and ribosomes are all different types of cellular organelles with different functions, and doesn't take any role in the given scenario.
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use the following map of four genes on a chromosome to answer the question. a map with four genes, labeled from left to right a, w, e, g. the distance between a and w is 5, the distance between w and e is 3, the distance between e and g is 12. between which two genes would you expect the highest frequency of recombination?
W and E are close and thus the frequency of recombination between two genes will be very high. This exchange of genetic material can lead the formation of offspring with new traits.
Homologous chromosomes align and exchange genetic material during meiosis. This process of exchanging genetic material is called recombination.
On a chromosome genes can be in various distance and this distance directly influence the frequency of recombination. When distance increases the frequency will be less.
Here we have given that the distance between W and E is 3 units, the distance between A and W is 5 units and distance between E and G is 12 units.
As we know W and E are close and thus the frequency of recombination between two genes will be very high. This exchange of genetic material can lead the formation of offspring with new traits.
Presence of genetic barriers and position of recombination sites within chromosome can be influenced by several factors which affects the actual frequency.
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What is the name of the protein that travels in the phloem to shoot meristems and interacts with other proteins there to start the process of flower production? Multiple Choice:a. Flowering locus Timeb. Flowering locus Cc. CYCLOIDEA d. LEC1 protein
Option A is correct. Flowering locus Time- Genes that change flowering time in any Arabidopsis accession are referred to as "flowering-time genes" by us.
Endogenous genetic components, as well as a number of environmental elements like day length, temperature, and stress, influence when flowers appear. In the long-day-flowering plant Arabidopsis thaliana and the short-day-flowering rice, the genetic components and molecular mechanisms governing this process have been studied (Oryza sativa). Reviews of the research on those factors have, however, been scarce. In this study, we concentrated on the effects of nutrients, environmental temperature, drought, salinity, exogenously applied hormones and chemicals, and pathogenic microbes on flowering time. Plants either start flowering to produce seeds for the next generation in response to such stresses or stimuli, or else flowering is postponed by a slowing of metabolism.
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A microorganism measures 5 μm in length. Its length in mm would be:
a) 0.05 mm.
b) 50 mm.
c) 500 mm.
d) 0.005 mm.
e) 0.5 mm.
0.005 mm. One millionth of the a metre, or micrometres, are frequently used to measure the size of microbes. Measureable traits of microorganisms include their genome sizes and growth rates, among many others.
Trillions of microorganisms, as well as "microbiomes," are present in the soil, plants, homes, the air we breathe, and on and inside of us. The large percentage of microbiomes support critical functions in our bodies and environments, including digestion and plant growth. In most cases, we can live side by side with them. With a greater understanding of these communities, we might be able using these complex microbial communities for implementations in agriculture and food safety, water purification, manufacturing, renewable energy, as well as biological threat detection.
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what advantages do solid media offer for the culture of microorganisms compared to liquid media?
Solid media provide a defined surface for the growth of colonies, making it easier to observe and quantify the growth of microorganisms.
This is particularly useful for the isolation and identification of pure cultures of microorganisms, as each colony can be assumed to have arisen from a single cell.
Solid media offer a stable environment for the growth of microorganisms. Unlike liquid media, which can become aerated or contaminated with other microorganisms, solid media remain relatively stable, allowing for more consistent results.
Solid media can be modified to include specific nutrients or environmental conditions that support the growth of particular microorganisms. For example, selective media can be used to inhibit the growth of certain microorganisms, while promoting the growth of others, making it easier to isolate and identify specific strains.
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which of the amino acid(s) are encoded by just one codon? serine and leucine asparagine methionine and tryptophan
The amino acid(s) are encoded by just one codon: methionine and tryptophan.
Thus, the correct answer is C.
Genetic code, the sequence of nucleotides in deoxyribonucleic аcid (DNА) аnd ribonucleic аcid (RNА) thаt determines the аmino аcid sequence of proteins. Though the lineаr sequence of nucleotides in DNА contаins the informаtion for protein sequences, proteins аre not mаde directly from DNА. Insteаd, а messenger RNА (mRNА) molecule is synthesized from the DNА аnd directs the formаtion of the protein.
RNА is composed of four nucleotides: аdenine (А), guаnine (G), cytosine (C), аnd urаcil (U). Three аdjаcent nucleotides constitute а unit known аs the codon, which codes for аn аmino аcid. Methionine аnd tryptophаn аre the only two аmino аcids thаt аre coded for by just а single codon (АUG аnd UGG, respectively).
Your options aren't well arranged, but most probably your options were
A. serine and leucine
B. asparagine
C. methionine and tryptophan
Thus, the correct option is C.
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what are the three basic components of a nucleotide?
A nucleotide is a element of DNA and RNA and is composed of three introductory factors a nitrogenous base, a five- carbon sugar, and a phosphate group.
The nitrogenous base is the most important element of the nucleotide and is responsible for the storehouse and transfer of inheritable information. The five- carbon sugar, generally ribose or deoxyribose, is the alternate element of the nucleotide and provides the backbone for the DNA or RNA beachfront.
The phosphate group is the third element and it binds the nitrogenous base and the sugar together. The phosphate group is also responsible for the transfer of energy within the nucleotide. Together, these three factors form the nucleotide, which is the abecedarian structure block of DNA and RNA.
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which structure(s) is/are highlighted? a histological view of a pink area containing several large white gaps inside it, as well as many tiny purple dots. the highlighted structure is the entire pink area.which structure(s) is/are highlighted? periosteum trabeculae of spongy bone trabeculae of woven bone red bone marrow
The highlighted structures in the histological view are:
the periosteumtrabeculae of spongy bonetrabeculae of woven bonered bone marrowThe pink area is the entire tissue sample, and the white gaps and purple dots are features of the tissue sample.
The periosteum is a thin connective tissue layer that covers the outer surface of bones. It provides protection and serves to hold the bones together.
The trabeculae of spongy bone are thin, rod-like structures that form a network within the spongy bone, providing support and allowing for flexibility.
The trabeculae of woven bone are thicker and more irregularly shaped than the trabeculae of spongy bone, and they form a network that provides support and strength.
Red bone marrow is a type of soft tissue found in the medullary cavity of bones. It produces red and white blood cells, as well as platelets.
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a functional plant or animal, existing through the cooperative organization of interrelated systems, is called a(n) .
You should practice your orderly visual search pattern: A.) in the backyard B.) by selecting clues and events restricting your line of sight
C.) Once a Year
D.) as a passenger in a vehicle
As a passenger in a car, you should practice your systematic visual search pattern.
An organized visual search is a method used by people, especially in the industries of aviation and law enforcement, to quickly and effectively examine an area or scene for important details or objects.
In this method, the area to be searched is divided into portions, and each section is then methodically scanned in a precise order until the needed information is found.
It can be beneficial to practice an organized visual search pattern to increase one's capacity for rapid and accurate information recognition and processing in cluttered or complicated situations. It can also reduce the chance of error and prevent people from overlooking crucial information.
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what is the organelle that is tasked with cleaning cells of wastes and debris?
The organelle that is tasked with cleaning cells of wastes and debris is lysosome.
What are lysosomes ?
In eukaryotic cells, the lysosome is an organelle that houses enzymes that disintegrate waste products from cells and foreign invaders. Because it aids in maintaining cellular homeostasis by disassembling and recycling cellular components that are no longer required or have been damaged, it is frequently referred to as the "trash disposal" of the cell.
The highly specialized enzymes found in lysosomes are capable of dissolving a wide range of cellular waste, including lipids, proteins, nucleic acids, and carbohydrates. The lysosomal membrane, which is composed of lipids, serves to keep the digestive enzymes inside the organelle, where they cannot harm other portions of the cell.
In some diseases, such as lysosomal storage diseases, lysosomes can become dysfunctional and accumulate waste materials, leading to cellular damage and disease. Therefore, lysosomes play a crucial role in maintaining cellular health and function.
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Would the genotype GG be considered heterozygous or homozygous?
A genotype in which there are two copies of the same allele. example: GG or gg means homozygous. Or a genotype with two different alleles. For example: Gg means heterozygous.
Homozygous and heterozygous are terms used to describe a pair of alleles. Individuals with two identical alleles (RR or rr) are said to be homozygous. Individual organisms with different alleles (Rr), on the other hand, are said to be heterozygous. You can have brown eyes whether you are homozygous (two brown-eyed alleles) or heterozygous (one brown and one blue allele). This differs from the blue-eyed allele, which is recessive. Blue eyes require two identical blue eye alleles. A genotype in which there are two copies of the same allele. example: GG or gg means homozygous. Or a genotype with two different alleles. For example: Gg means heterozygous.
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besides springtails, are there other ways moss sperm may be transferred from male to female gametophytes?
Splashing of sperm from male to female gametophytes may be aided by rain. Sperm transfer from other species of animals may assist.
Mosses are tiny, non-vascular, flowerless plants that belong to the scientific order Bryophyta strictly speaking. The parent group bryophytes, which includes hornworts, mosses, and liverworts, may alternatively be referred to as bryophyta (sensu lato, Schimp. 1879. In wet or shaded areas, mosses frequently develop dense, green mats or clumps. The basic leaves on individual plants are typically only one cell thick, linked to a stem that may or may not have branches, and play a very limited role in transporting water and nutrients. Despite the fact that certain species have conducting tissues, these tissues are typically underdeveloped and physically distinct from tissue found in vascular plants. Mosses do not produce seeds; instead, they produce sporophytes, which are unbranched stalks topped with spore-containing capsules. Splashing of sperm from male to female gametophytes may be aided by rain. Sperm transfer from other species of animals may assist. Mosses can either be monoicous or dioicous (compare dioecious in seed plants) (compare monoecious). Male and female sex organs are carried on distinct gametophyte plants in dioicous mosses. Both are produced on the same plant in monoicous mosses, also known as autoicous mosses. A diploid sporophyte is created when sperm from the antheridia swim to the archegonia and fertilise it in the presence of water. Moss sperm are biflagellate, which means they have two flagella for locomotion. Fertilization cannot take place without water because the sperm must swim to the archegonium. Some species, notably Mnium hornum and many Polytrichum species, retain their antheridia in what are known as "splash cups," bowl-shaped structures on the shoot tips that cause the sperm to travel several decimeters when disturbed water droplets hit it, increasing the fertilization distance.
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what two physiological characteristics are highly developed in neurons?
Neurons have two main physiological characteristics that are highly developed: excitability and conductivity.
An electrically excitable cell known as a neuron, neurone, or nerve cell, synapses are specialised connections that frequently use little amounts of neurotransmitters to transport electric signals from the presynaptic neuron to the target cell over the synaptic gap. With the exception of sponges and placozoa, the neuron is the primary element of nervous tissue in all animals. Plants and fungus are examples of non-animals that lack nerve cells.
A normal neuron is made up of an axon, dendrites, and the cell body (soma). The axon and dendrites are filaments extending from the soma, which is a compact structure. Typically, dendrites branch out widely and reach a few hundred micrometres from the soma.
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the following absorbance measurements are observed in a kinetic enzyme assay: time (minutes) absorbance 0 0.400 1 0.450 2 0.485 3 0.510 4 0.525 5 0.532 what is the best conclusion?
The best inference from a kinetic enzyme assay is that the reaction did not reach a steady state and that the sample must be diluted for a subsequent assay.
In the kinetic assay method, the progress of the response is steadily calculated as substrates are convinced into products. Changes in the concentration of two together substrates and products cause shifts in measurements.
Enzyme activity is repeatedly examined in the curative, biochemistry, and snack skill research fields to illuminate the rate at which the reaction occurs and the closeness of the something which incites activity-substrate interplays. The rates of these responses may be correctly calculated utilizing a UV-Visible spectrophotometer.
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The complete question is:
The following absorance measurments are observed in a kinetic enzyme assay:
Time (min.) Absorbance
0 0.400
1 0.450
2 0.485
3 0.510
4 0.525
5 0.532
What is the best conclusion?
which is the term for compounds that do not mix with water?
Hydrophobic is the term used for compounds that do not mix with water.
What is hydrophobic?To be hydrophobic is to be afraid of water. In chemistry, it refers to a substance's ability to repel water. A hydrophobic substance has hydrophobicity and is so called hydrophobic.
Hydrophobic compounds are nonpolar molecules that form micelles rather than being exposed to water. Nonpolar solvents are frequently used to dissolve hydrophobic compounds (e.g., organic solvents).
There are also superhydrophobic materials having contact angles of more than 150 degrees with water. These materials' surfaces are resistant to wetness. The Lotus effect refers to the structure of water droplets on superhydrophobic surfaces, which is inspired by the sight of water on a lotus petal.
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process in which soil bacteria convert nitrogen compounds in soil back into nitrogen gas which is released into the atmosphere
Answer:
Denitrification.
Explanation:
Denitrification is the process in which soil bacteria convert nitrogen compounds in soil back into nitrogen gas which is released into the atmosphere.
a student observes a cell through a light microscope and correctly decides that it is a plant cell. what observation would lead to that conclusion?
A. it has a large, central vacuole
B. ribosomes are visible
C. the nucleus is in the center of the cell
D. a cell membrane is present
A student makes the appropriate determination that a cell is a plant cell after looking at it under a light microscope. conclusion be reached from that observation. its center vacuole is large.
What exactly is a microscope used for?The tool of choice for enlarging minute objects is the microscope. Some microscopes can also be used to view an object there at cellular level, enabling researchers to see a cell's form and the locations of its mitochondria and other organelles.
What governs microscope, exactly?Understanding the fundamentals of microscopy—magnification, resolution, numerical aperture, lighting, and focusing—will help you operate the microscope effectively and with the least amount of frustration.
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What is a digestible straight chain type of starch that makes up about 20% of digestible starch found in plants multiple choice question?
A digestible straight chain type of starch that makes up about 20% of digestible starch found in plants is amylose, therefore the correct option is A.
Amylose is a type of polysaccharide which is composed of glucose motes and is occasionally appertained to as a direct polysaccharide. It's an important element of shops and helps to store energy. It's a complex carbohydrate that isn't fluently digested by enzymes in the mortal digestive system.
Amylose is set up in numerous foods similar as potatoes, sludge, sap, and whole grains. It's also set up in high- bounce vegetables similar as peas and lentils. Amylose is important for maintaining healthy blood sugar situations and for furnishing a slow, steady release of energy throughout the day.
Question is incomplete the complete question is :
What is a digestible straight chain type of starch that makes up about 20% of digestible starch found in plants multiple choice question?
a. amylose
b. polymylose
c. dmylose
d. none
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all of the following are considered natural resources except select one: a. a coral reef. b. gold. c. labor. d. a redwood forest.
All of the following are considered natural resources except c)labor. So,correct option is c.
Natural resources are assets that are drawn from nature and utilized with not many alterations. This incorporates the wellsprings of esteemed attributes like business and modern use, stylish worth, logical interest, and social worth. On The planet, it incorporates daylight, climate, water, land, all minerals alongside all vegetation, and wildlife.
Natural resources are essential for humankind's regular legacy or safeguarded in nature saves. Specific regions (like the rainforest in Fatu-Hiva) frequently highlight biodiversity and geodiversity in their environments. Regular assets might be characterized in various ways. Natural resources are materials and parts (something that can be utilized) that can be tracked down inside the climate. Each man-made item is made out of normal assets (at its major level).
Labor is not considered a natural resource because it refers to the work done by people and does not come from the earth or the natural environment. A coral reef, gold, and a redwood forest are considered natural resources because they are formed or obtained from the natural environment and can be used for economic gain.
Hence,correct option is c.
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which of these microscopy methods has the highest magnifying capabilities?
A compound microscopy has the highest magnifying capabilities. Thus, option 1 is correct.
TEM or SEM, which has a higher resolution?Users of the TEM can magnify their samples more than 50 million times, although this is only possible with the SEM up to 1-2 million times. However, compared to TEMs, SEMs can reach a far broader maximum field of view (FOV), whereas TEM users can only image a very tiny portion of their material.
Why does TEM resolution differ from SEM?With TEM, you can see atomic-level features, providing new levels of structural information at the utmost resolution.
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Complete question:
Which of these microscopy methods has the highest magnifying capabilities?
compound microscopyoptical microscopelight microscopeUltramicroscopeduring fission, some of the nuclear mass is converted into
Nuclei are torn apart through a process called nuclear fission (usually large nuclei).
Energy is released when big nuclei, such uranium-235, fission. The energy released is so great compared to the mass-energy equivalence ( e = mc^2) that the mass actually decreases. This indicates that a portion of the mass is changed into energy. About 3.20 1011 J of energy are wasted in the process of fission for every kilogram of mass lost. Typically, this fission process takes place when a low energy thermal neutron collides with a massive, relatively unstable nucleus (meaning that there is some degree of imbalance between the Coulomb force and the strong nuclear force in the nucleus). Fission results in the creation of smaller nuclei as well as the emission of neutrons.
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The ______ atrium and ventricle are prominent when viewing the heart from the posterior view. left.
Looking at the heart from behind, the left atrium and left ventricle are prominent.
The heart also rotates slightly around its vertical axis, so that much of the right side of the heart is visible in the anterior view and much of the left side is visible in the posterior view. The LA is located posteriorly and forms most of the base of the heart. In situ on the chest, the LA is posterior, left and slightly superior to the RA. The aortic root runs along the anterior aspect of the atrial septum. Looking at the heart from behind, the left atrium and left ventricle are prominent.
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5. why might a protein have two separate binding sites, and how might the binding of a small molecule to one binding site influence the other binding site?
A protein can have two separate binding sites for several reasons-
Regulation of activity, Facilitation of multi-step processes, Stabilization of protein structure.Regulation of activity: Having two separate binding sites allows for the regulation of protein activity through the binding of different molecules to each site. For example, one site might bind an activator molecule while the other binds an inhibitor, giving the cell a way to control the protein's activity.
Facilitation of multi-step processes: Some proteins have multiple binding sites to facilitate multi-step processes. For example, an enzyme may have two separate binding sites for different substrate molecules, which allows it to perform sequential reactions.
Stabilization of protein structure: Having two separate binding sites can also stabilize the protein structure and prevent it from denaturing. The binding of a small molecule to one binding site can influence the other binding site by changing the protein's shape or conformation. This can result in the opening or closing of the other binding site, making it more or less accessible to other molecules. The binding of a small molecule to one site can also affect the protein's activity or stability, which can have an indirect effect on the other binding site.
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why is atp necessary for active transport? why is atp necessary for active transport? atp is an important structural element of transport proteins. atp is in higher concentrations inside of the cell. atp provides energy to transfer material against its concentration gradient. atp is a constituent of the electrochemical gradient.
ATP gives material the energy to move against its gradient of concentration.
Because it supplies the energy required to transport molecules against one‘s concentration gradient, ATP is essential for active transport. Molecules are moved by active transport from a low to a high concentration. Similar to pushing a boulder uphill, this is energetically unfavourable and demands energy. Because it enables the cell to keep moving substances against by the concentration gradient, rather than from the region of low concentration to a area of high concentration of the surrounding environment, active transport is crucial for a cell's survival. Primary active transport, as well known as direct active transport, uses chemical energy directly to move all types of solutes against one‘s concentration gradient across a membrane.
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in which cells or tissues is lactase produced and what is its role?
Explanation:
Lactase is produced in the brush border cells of the small intestine and its role is to break down the sugar lactose found in dairy products into glucose and galactose, which can then be absorbed into the bloodstream.
which rib attaches to the sternum at the sternal angle?
The sternal angle, which denotes the point where the costal cartilages of the second rib articulate with the sternum, is a crucial clinical marker for locating numerous other anatomical locations.
Where does the sternum and the first rib connect?The topmost rib, or first rib, starts from thoracic vertebrae 1 and is the most bent and typically the shortest of all the ribs (T1). Just below the point where the collarbone and sternum converge, it articulates with the latter. It is attached by muscles to the anterior scalene and serratus anterior.
What part of the sternum does the second rib connect to?Sternal angle: The sternal angle is where the second rib connects to the sternum. The second rib is the visible rib because the first rib is concealed by the collarbone.
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