singer and nicolson's model for the cell membrane envisioned the membrane as a fluid bilayer of lipids with an assortment of associated proteins. this model is called?

The biological species concept emphasizes the ability of two individuals to successfully produce viable, fertile offspring.

The Biological Species Concept defines a species taxon as a group of organisms that can successfully interbreed and produce fertile offspring.

According to that concept, a species' integrity is maintained by interbreeding within a species as well as by reproductive barriers between organisms in different species.

The biological species concept (BSC) was designed to aid understanding of biological diversity, particularly the ubiquitous observation that sexually reproducing organisms exist in more or less distinct phenotypic and genetic clusters rather than in a continuum of forms.

To learn more about  Biological Species Concept, here

brainly.com/question/12681889

SPJ4

The name of the important filter that protects the baby from virus/bacteria is the villi

This goes to say that the villi helps to prevent some bacteria and viruses from infecting babies.

Pathogenic or infectious organisms are organisms which causes diseases to plants and animals.

Some examples of pathogenic or infectious organisms are:

So therefore the name of the important filter that protects the baby from virus/bacteria is the villi

Learn more about the pathogens:

https://brainly.com/question/12415932

#SPJ1

The Kaposi's sarcoma-associated herpes virus was identified in a unique and unusual category of AIDS-related lymphomas that generally manifest as lymphomatous effusions with no apparent tumor tissues.

Description of the Statement-

Learn more about lymphomas here:

https://brainly.com/question/1222522

#SPJ4

Answer:

can you put the chart

Explanation:

not enough information

Adenoviral pharyngitis is a viral infection that cannot be effectively treated with none of the choices above (Option iv).

Virus infection is a pathologic condition where the trigger of disease is a virus that has humans as suitable hosts.

Adenoviral pharyngitis is a virus infection caused by a virus called Adenovirus, which is capable of infecting humans and different groups of animals.

Adenoviral pharyngitis is a viral disease that can be effectively treated with antiviral drugs.

In conclusion, Adenoviral pharyngitis is a viral infection that cannot be effectively treated with none of the choices above (Option iv).

Learn more about viral infections here:

https://brainly.com/question/1554410

#SPJ1

[tex] \\ \\ [/tex]

Respiratory and Circulatory System:

= > The respiratory system and the circulatory system are two important organ systems in the human body. The respiratory system involves all passageways and organs involved in breathing, while the circulatory system involves the heart and blood vessels.

Answer and Explanation: 1

= > The respiratory system and circulatory system interact in both the enriching of blood with oxygen and the delivery of oxygen-rich blood to the tissues.

= > In the lungs, air fills small sacs called alveoli. The alveoli are made of thin sheets of squamous epithelial cells suffused with capillaries. The epithelial tissue allows oxygen from the inhaled air to pass into the blood of the capillaries while allowing waste gases, like carbon dioxide, to escape the blood and be exhaled from the body.

= > After leaving the lungs, the blood returns to the heart, where it is pumped back out to the rest of the body. The oxygen-rich blood travels through the blood vessels and eventually into capillaries that suffuse the tissues of the body. In the tissues, the oxygen from the blood is extracted and delivered to the cells to power their metabolic functions.

= > Both processes are vital to the survival of an organism because tissues would die without the delivery of oxygen that begins in the interaction of the respiratory system and circulatory system.

Hope this answer is helpful foe yuuh ^o^

ur gonna mark this ans as Brainlist ryt? as u mentioned! ^o^

The respiratory and circulatory systems interact in the supply of oxygen to the cells of the body.

The respiratory system supplies oxygen into the blood. The circulatory system transport oxygenated blood to tissues/cells that require oxygen and supply them with the gas.

On the other hand, carbon dioxide waste that needs to leave the body system is transported by the blood from cells/tissues to the respiratory system. The respiratory system gets rid of this waste.

Without oxygen supply and getting rid of carbon dioxide, the cells of the body will die in no time.

More on circulatory and respiratory systems can be found here: https://brainly.com/question/3305440

#SPJ1

Answer:

Mutation, natural selection, adaption, extinction

Explanation:

I could be wrong but I'm pretty sure these are the main stages of evolution

A member of the adenoviruses has been implicated as having a role in obesity. That is option C.

Obesity is defined as the eating disorder which is characterized by the body mass index that is above 30.

There are various types of obesity which includes the following:

The symptoms of obesity include the following:

Recently, the adenoviruses has been associated to the causes of obesity.

It has been discovered that the virus directly acts on the adipocytes.

Learn more about virus here:

https://brainly.com/question/25236237

#SPJ1

Their are three main characteristic is intensity, saturation, and hue .

Red color is motivated by power, black is achromatic color with hue  like white gray and white.black is symbol of darkness.  Brightly co-loured object is one that reflects and transmits a large portion of light falling on it.

The great amount of light is reflected on white screen while a black screen would not reflects any light. Co-lour  also linked with various personality trait , motivation and productivity levels in life. It symbolize life and death , love and evil and happiness and anger.Red color makes you feel passionate and energized.

To learn more about motivation here

https://brainly.com/question/972761

#SPJ4

Tunica media is the layer of the arteriole wall that can contain smooth muscle and can produce vasoconstriction.

The smooth (involuntary) muscle cells and elastic fibers that make up the tunica medium, or middle coat, are organized in roughly spiral layers. The tough tunica adventitia, also known as the outer coat, is a layer that serves as support. It is made primarily of collagen fibers.

The arterial wall's ability to support mechanical loads is also impacted by its elasticity. The etiology of atherosclerotic lesions is significantly influenced by the media's metabolic condition. Vascular SMCs, elastin, and collagen fibers are grouped in a highly ordered manner in the tunica media.

Muscular arteries typically have diameters between 0.1 and 10 millimeters. Muscular arteries are able to play a significant part in vasoconstriction due to their thick tunica media.

Learn more about tunica media here:

https://brainly.com/question/13065287

#SPJ4

The given statement that IL-22 inhibits epidermal decentration and induces proinflammatory gene expression and migration of human keratinocytes holds true

IL-22 belongs to a family of cytokines structurally related to IL-10, including IL-19, IL-20, IL-24, and IL-26. In contrast to IL-10, IL-22 has proinflammatory activities. IL-22 signals through a class II cytokine receptor composed of an IL-22-binding chain, IL-22RA1, and the IL-10RB subunit, which is shared with the IL-10R. In the present study, we show that short-term cultured human epidermal keratinocytes express a functional IL-22R but no IL-10R. Accordingly, IL-22 but not IL-10 induces STAT3 activation in keratinocytes. Using a cDNA array screening approach, real-time RT-PCR, and Western blot analysis, we demonstrate that IL-22 up-regulates, in a dose-dependent manner, the expression of S100A7, S100A8, S100A9, a group of proinflammatory molecules belonging to the S100 family of calcium-binding proteins, as well as the matrix metalloproteinase 3, the platelet-derived growth factor A, and the CXCL5 chemokine. In addition, IL-22 induces keratinocyte migration in an in vitro injury model and down-regulates the expression of at least seven genes associated with keratinocyte differentiation. Finally, we show that IL-22 strongly induces hyperplasia of reconstituted human epidermis. Taken together, these results suggest that IL-22 plays an important role in skin inflammatory processes and wound healing.

To learn more about inflammation with the help of the given link:

https://brainly.com/question/26945115

#SPJ4

According to the research, the correct option is alveoli, the grape-like out-pouchings located at the ends of the respiratory bronchioles are called alveoli.

They are the terminal diverticula of the bronchial tree, that is, they are the grape-like out-pouchings located at the ends of the bronchioles, in which gas exchange takes place between the air that was inhaled and the blood.

That is, these are similar to bags, where the body manages to get the oxygen it needs for its operation and through the same opening, the gases enter and leave the pulmonary alveoli.

Therefore, we can conclude that according to the research, the correct option is alveoli, the grape-like out-pouchings located at the ends of the respiratory bronchioles are called alveoli.

Learn more about alveoli here: https://brainly.com/question/3209516

#SPJ1

Periodontal curettes instrument is designed to remove supragingival calculus from anterior teeth.

What is periodontal curette ?

Periodontal curettes have a rounded back and toe, one face, and one or two cutting edges. They are often the tool of choice for removing supragingival calculi. When doing nonsurgical periodontal therapy as part of a patient's oral hygiene care, universal and Gracey curettes are frequently employed.

What type of instrument is periodontal curette ?

ultrasound instruments The main kind of treatment for eliminating plaque and calculus is ultrasound technology. These power-driven devices oscillate at incredibly fast rates, creating tiny vibrations that help eliminate calculus and subgingival plaque.

Learn more about periodontist curing supragingival calculus here:-

https://brainly.com/question/16953221

#SPJ1

Brain and spinal cord meninges are similar because pia mater in both areas is made of the same tissue They also have distinct differences including dura mater in the two regions are made of different tissues.

learn more about Brain and spinal cord here: https://brainly.com/question/26348097

#SPJ1

Unlike other saturated fatty acids, the specific types of saturated fatty acids in coconut oil may increase blood levels of HDL cholesterol.

Fatty acids are found in many plants and animals and they abound as part of out diet such as in butter fat, meat fat etc. These are the fatty acids that are composed only of a long chain of carbon atoms that do not contain multiple bonds.

We can classify fatty acids as saturated or unsaturated based on the presence or the absence of the multiple carbon bonds on the molecular structure of the compound.

Hence, unlike other saturated fatty acids, the specific types of saturated fatty acids in coconut oil may increase blood levels of HDL cholesterol.

Learn more about saturated fat:https://brainly.com/question/11261140

#SPJ1

Making a college choice is an example of an evocative genotype.

The answer is option B.evocative

Evocative genotype-surroundings correlation refers to how the social environment reacts to individuals primarily based on their inherited traits. as an example, whether one has an extra outgoing or shy temperament will affect how he or she is dealt with by way of others.

Evocative (or reactive) genotype–surroundings correlation refers to the association between an individual's genetically inspired behavior and others' reactions to that behavior.

Active genotype-environment correlation occurs whilst people are searching for out environments that help their genetic dispositions. that is also known as the area of interest selected. For instance, kids who're musically inclined are looking for music instruction and opportunities that facilitate their natural musical capacity.

Learn more about genotype here: https://brainly.com/question/1046675

#SPJ4

Infectious, foreign, or cancerous cells are the primary targets of a healthy immune system.

White blood cells also known as leukocytes, play a vital role in the immune system. Immune cells are developed from stem cells in the bone marrow and can be divided into different types. Neutrophils, eosinophils, basophils, mast cells, monocytes, macrophages, dendritic cells, natural killer cells, and lymphocytes all are types of white blood cells.

Learn more about the immune system. https://brainly.com/question/24816344

#SPJ4

1. Chrysophytes

⇒ Unicellar

⇒ Present in water bodies with low calcium levels.

⇒ Golden yellow colour due to accessory pigment.

⇒ Cell walls made of cellulose and silica.

⇒ Free swimming.

⇒ Two unequal flagella.

2. Dinoflagellates

⇒ Dinoflagellates are essentially golden-brown, biflagellate, unicellular motile protists.

⇒ Golden brown is the primary color, but due to changes in the ratios of other pigments, it may also take on yellow, green, brown, or even blue forms.

⇒ Theca or lorica, composed of articulated and sculpted cellulose plates, is a stiff covering that typically covers cells.

⇒ One flagellum is transverse and the other is longitudinal, making the two flagella distinct (heterokont).

⇒ Mesokaryon is the name given to the big nucleus.

⇒ Chlorophyll a and chlorophyll c are found in plastids or chromatophores.

⇒ In the sea, certain dinoflagellates like Gymnodinium and Gonyaulax proliferate in vast numbers, turning the water red and resulting in the so-called "red tide."

⇒ Dinoflagellates in the ocean exhibit bioluminescence. such as Noctiluca.

3. Euglenoids

⇒ Unicellular protists called euglenoids, like the genus Euglena, are frequently found in freshwater.

⇒ The pellicle, a protein-rich cell membrane, exists in place of the cell wall.

⇒ They bear two flagella on the anterior end of the body.

⇒ A small light sensitive eye spot is present.

⇒ They can prepare their own food because they have photosynthetic pigments like chlorophyll. They act like heterotrophs when there is no light, though, by catching other tiny aquatic creatures.

⇒ They are referred regarded as the connecting link between plants and animals since they exhibit both plant and animal-like characteristics, making it difficult to categorize them.

4. Slime moulds

⇒ Chlorophyll does not exist in them.

⇒ Only the plasma membrane encloses them. The spores, however, contain cellulose cell walls.

⇒ They often reside near decomposing vegetation.

⇒ They have a diverse spectrum of coloring.

⇒ They are saprotrophic or phagotrophic feeders.

The bony skeleton and gills are common in bony and jawless fishes

Both cartilaginous and bony fish have an endoskeleton. bony fish and fish with cartilage both have gills for breathing. bony fish and fish with cartilage both have jaws in their mouths. Fish with bony bones and fish with cartilage both have paired fins. They are unable to regulate their internal body temperature.

Their core body temperature is comparable to the ambient temperature. The majority of jawless fish have paired gill chambers, sometimes as many as seven, and a cartilage-based skeleton. Bony fish have gills on the sides of their heads and are scale-covered. While jawed fish ventilate their gills unidirectionally, with water streaming in at the mouth and out over the gills, the jawless fish ventilate their gill pouches with tidal water flow.

To learn more about bony and jawless fish please visit -
https://brainly.com/question/938977
#SPJ4

Monocot primary stem is composed of several vascular boundaries immerse in the parenchymatous tissue. A: Epidermis. B: Fundamental tissue/Parenchimatous tissue. C: Phloem. D: Xylem.

The primary structure of monocot stems has several vascular bundles distributed in the parenchyma tissue.

This is the fundamental tissue. Since monocots have bundles dispersed everywhere, it is difficult to differentiate the medulla and the cortex.

The fundamental tissue is composed of several parenchymatous cells. that store food.

This is a single-celled layer of parenchymatous cells.

It protects the stem, and is closely associated with the cuticle.

The hypodermis is located just below the epidermis. It is constituted of more than one parenchymatous cell layer.

It provides mechanical strength to the stem.

These are made of xylem and phloem cells. Their arrangement in bundles is always the same:

- Xylem faces the interior of the stem,

- Phloem is facing the exterior.

Vascular bundles are located everywhere in the stem

Phloem

Composed of sieve tubes and companion cells.

Its function is to transport photosynthetic products to different parts of the plant where they are being used or stored.

Xylem

Composed of metaxylem vessels and protoxylem vessels.

These vessels transport water and nutrients from the ground to the whole plant.

According to this information, the correct labels are,

A → Epidermis

B → Fundamental tissue. Parenchima tissue.

C → Phloem

D → Xylem

You can learn more about the primary structure of monocot stems at

https://brainly.com/question/1542995

https://brainly.com/question/13870492

#SPJ1

Nonsense mutations tend to impact the final protein product more than missense mutations because they produce shorter proteins due to the precense of the premature stop codon.

Although, in some cases, mutations make the resulting proteins more efficient, usually, they make them less efficient than they should be.

In those cases in which the mutations turn to be beneficial for the protein function, it is favored by natural selection, and it fixates. This is what leads to evolution.

If the mutation is not favorable, it just gets lost.

When a change occurs in a single base pair, it is known as a point mutation.

Points mutations might be either silent, missense, or nonsense.

Missense mutations might alter the protein's function or not, depending on the mutation site and on wheather if the mutated amino acid is near or not to the active site. However, the protein length is the same.

Nonsense mutations change the original codon for a premature stop codon that should not be there. Hence, the protein will be shorter and there are higher chances of altering its functions.

Nonsense mutations tend to impact the final protein product more than missense mutations because they produce shorter proteins due to the precense of the premature stop codon.  

You can learn more about point mutations at

https://brainly.com/question/15870401

https://brainly.com/question/17130462

#SPJ1

The three muscles which control the vertebral column are the semispinalis, multifidus, and rotatores.

However, these muscles helps tp o the vertebral column and also have a role in proprioception and balance.

Muscles can be defined as a band or bundle of fibrous tissue in a human or animal body that has the ability to contract, producing movement in or maintaining the position of parts of the body.

So therefore, the musculature includes muscles that move the vertebral column and muscles that move the ribs, lower limb upper limb trunk head and neck

Learn more about the muscular system:

https://brainly.com/question/1283837

#SP1

In cell signalling, after a signal is sent, signal molecules bind to receptors on target cells and some activity in a target cell changes.

There are three stages in cell signalling :

1. The process of reception occurs when a signalling molecule from the extracellular environment is recognized by a cell. The chemical signal, which is also known as a ligand, is recognized as a signal when it attaches to a receptor protein either on the exterior of the cell or on the interior of the cell.

2. Transduction: This process occurs when the signalling molecule interacts with the receptor, which causes a change in the protein that makes up the receptor. The process of transduction is kicked off by this modification. In most cases, signal transduction occurs through a pathway that consists of numerous stages. The signal transduction route contains relay molecules, each of which influences the subsequent molecule in the pathway.

3. Reaction: In the third and last step, the signal causes a certain cellular response.

Learn more about cell signalling here :

https://brainly.com/question/14412293

#SPJ4

Answer:

The Objective Lens

Explanation:

light light passes through the microscope through the objective lens

Answer:

lamp

Explanation:

lamp - produces the light (Typically, lamps are tungsten-filament light bulbs. For specialized applications, mercury or xenon lamps may be used to produce ultraviolet light. Some microscopes even use lasers to scan the specimen.)

The wild-type trait is the most commonly found in nature.

Wild-type trait is defined as the type of trait that is mostly the phenotype of an organism that is abundant in nature.

Examples of wild-type trait are:

Learn more about mutation here:

https://brainly.com/question/19612878

#SPJ1

Programmed cell death, or apoptosis , takes place particularly in parts of the body where the cells are likely to accumulate significant genetic damage over time and are therefore at high risk of becoming cancerous.

Apoptosis is the process of programmed cell death. Unwanted cells, such as those between a developing hand's fingers, are removed during the early stages of development. Adult bodies employ apoptosis to get rid of cells that can no longer be repaired. Apoptosis aids in the prevention of cancer.

A cell will begin to undergo apoptosis when the survival signals are abruptly removed or when it separates from its surrounding cells. Additionally, heightened cellular stress brought on by conditions of extreme heat, DNA damage from radiation or chemotherapy, or pathogenic infection can cause cell death through apoptosis.

Learn more about apoptosis here:

https://brainly.com/question/14131657

#SPJ4

DF = 1/250 x 1/2

Vt = Et

Vf = final concentration of lactase in the commercial preparation

DF = Vt / Vf

Vf = Vt / DF

Vf = Et / (1/250)(1/2)

Vf = Et x 500

The commercial preparation was first diluted by 1 - 250 to prepare the stock solution, and it was further diluted by 1 -2 by mixing with the substrate stock solution to perform the kinetics experiments.

Therefore, the dilution factor is done when you take whatever you initial volume was - in this case 1mL - and divide it by the new diluted volume - 0.1mL + 25mL. Then we get is 0.1/25.1, which is more easily solved as 1/250.

Since, this was a double dilution, 1mL of the initial dilution was diluted further with 1mL of substrate. So the second dilution factor will be 1/(1+1) = 1/2.

To learn more about kinetic experiments here

https://brainly.com/question/13004369

#SPJ4

Answer: Iron deficient macrophages are the Bruce Lees of the immune system.

Here, given-

homozygous alleles 'a' have a frequency of 0.3.

Also the alleles are in equilibrium in a Hardy-Weinberg population. The frequency of individuals that are homozygous for this allele are= 0.49.

The Hardy-Weinberg equilibrium can be defined as the principle which states that the variation in the genetic makeup of a population remains constant and unchanged till there are no external interferences, influencing the population.

Calculation-

[tex]p + q= 1\\0.3 + q= 1\\q= 1- 0.3\\q= 0.7\\[/tex]

Then to find the frequency of the individuals homozygous for this allele the following formula needs to be used-

[tex]p^{2} + 2pq + q^{2} = 1\\Here,\\p^{2}= dominant homozygous frequency\\2pq= heterozygous frequency\\q^{2}= recessive homozygous frequency\\[/tex]

Thus, the individuals homozygous for the allele can be calculated by-

[tex]q^{2} = (0.7)^{2} \\q^{2}= 0.49[/tex]

Learn more about Hardy- Weinberg equilibrium here-

https://brainly.com/question/14669053

#SPJ4

Answer:

Explanation:

Permeability of cell membrane refers to the ease with which a molecule can pass through a cell membrane. It is the rate at which the passive diffusion occurs through the membrane.

A solid's permeability refers to its capacity to permit the passage of fluids. As a result, option A is the right response.

A substance's permeability, such as that of rocks, is determined by how easily liquids can pass through it. Fluids can move through the porous material's network of interconnected spaces because of this property.

It is the speed at which the membrane's passive diffusion takes place. It is vital to the movement of fluids through porous media, such as the movement of groundwater in aquifers or of oil through rock formations.

As a result, permeability is the quality of a material that allows a fluid to pass through it. Option A offers the right response.

Learn about permeability here:

https://brainly.com/question/32482559

#SPJ3