Primary lymphoid tissues are the sites where lymphocytes develop and mature whereas secondary lymphoid tissues are the sites where lymphocytes are stimulated.
What are lymphoid tissues?Lymphoid tissues are tissue which form part of the lymphatic system of the body.
The lymphatic system is the system of the body which is concerned with the production of the immune cells and in which the lymph circulates.
The primary lymphoid tissues are the bone marrow and thymus where there lymphocyte develop and mature.
The secondary lymphoid tissue include the lymph nodes, spleen, tonsils and Peyer's patches and are the sites where lymphocytes are stimulated.
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Note that the complete question is given as:
Primary lymphoid tissues are the sites where lymphocytes ____, whereas secondary lymphoid tissues are the sites where lymphocytes ____.
a. are stimulated; develop and mature
b. encounter pathogens; undergo apoptosis
c. develop and mature; become stimulated
d. undergo clonal selection; differentiate from hematopoietic stem cells
e. die; are phagocytosed after death
The __________ is comprised of a thin sheet of proteins secreted by epithelial cells.
The basal lamina is comprised of a thin sheet of proteins secreted by epithelial cells.
The basal lamina is a rather thin and flexible layer about 40 to 120 nm thick formed by several types of molecules mainly extracellular matrix proteins secreted by the cells of the epithelium that form a mesh-like lattice and separate a large number of cells belonging to other tissues such as muscle and adipose.
What is a cell?A cell is the most basic and smallest form of life that exists in a living being, its parts are the membrane, the cytoplasm and the organelles including the nucleus.
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Must every member of a particular species be able to reproduce in order for the species to survive.
It is not necessary for every members of a particular species to must reproduce in order for the species to survive.
For a given species to survive, not every individual needs to be able to reproduce. because as long as some of the individuals are reproducing the species number will be maintained enough so that it could survive.
Take homo sapiens (Humans) as an example. Many males and females worldwide are sterile and unable to procreate, yet the human species is still thriving.
Also, if we take ants and bees as an example it has a particular cast called reproductive caste which is able to reproduce and all other individuals have their certain assigned duties and still the queen only produce such huge amounts of eggs that they are still surviving.
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Who was the scientist whose work provided the foundation for later understandings of genetics?
The scientist whose work provided the foundation for later understandings of genetics was Gregor Mendel.
Gregor Mendel is known to be the father of genetics because of the study he made of seven traits of a pea plant in order to study the passing on of traits. The two laws formulated by Gregor Mendel referred to as the 'law of segregation and 'the law of independent assortment' served to lay the foundation of modern genetics.
Gregor Mendel was able to predict the transmission of alleles or genes from parents to offspring even before the genes were discovered. The concept of dominant and recessive traits was also brought up by Gregor Mendel. Hence, due to such revolutionary findings, Gregor Mendel is known to be the scientist who laid the foundations of genetics.
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What is the difference between a cell in g1 phase and a cell in g2 phase of the cell cycle?
The difference between a cell in g1 phase and a cell in g2 phase of the cell cycle is:
The first phase of the cell cycle's interphase, known as the G1 phase, is when cells begin to expand by synthesizing proteins and other substances. The G2 phase is the third interphase of the cell cycle, during which the cell makes the required proteins and other components to prepare for nuclear division.What does G1 do for cells?Between the conclusion of cell division during mitosis and the start of DNA replication during S phase, there is an intermediary phase called G1. The cell develops during this period to prepare for DNA replication, and some internal elements, such the centrosomes, go through replication.What is the G2 phase of a cell?The cell grows more, produces proteins and organelles, and starts to remodel its internal structure in preparation for mitosis during the second gap phase, also known as the end subscript phase.To learn more about cell phases visit:
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Which are Carbon Emissions? (Select all that apply.)
Answer:
i noticed your question was slightly incomplete, let me know any more information in the comments box.
Carbon emissions are greenhouse gases with the highest levels of emissions in the entire atmosphere. This surely causes global warming and climate change. Carbon emissions occur whenever too many nonrenewable resources are released into our atmosphere.
Hope this helps you.
What impact does it have on your thoughts about being Canadian?
Answer:
Explanation:
eausucdfad join this meeting for fun
In the gel electrophoresis lab, you determined the ________ of three different dna samples. complexity phenotype reactivity function genotype
Answer:
Explanation:
genotype
What is the name of all the cell contents between the nucleus and the cell membrane.
Cytoplasm, the semifluid substance of a cellular this is outside to the nuclear membrane and inner to the cell membrane, once in a while defined because the nonnuclear content material of protoplasm. In eukaryotes (i.e., cells having a nucleus), the cytoplasm carries all the organelles.
Protects cell contents; makes touch of different cells carries channels, transporters, receptors, enzymes and cellular identification markers; meditates the access and go out substance. Cellular contents among the plasma membrane and nucleus, along with cytosol and organelles.
The complete cell content material of a residing cellular is known as protoplasm. The cytoplasm, nucleus and all different residing additives of the cellular collectively make up the protoplasm of a cellular.
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Khalil is working toward a career in government service. what job would be in the field that khalil is interested in?
(a) sous chef for a catering business.
(b) student teaching in middle school.
(c) organizer for the parks department.
(d) hvac repairman.
Khalil is working toward a career in government service. the job that would be in the field that Khalil is interested in is an organizer for the parks department.
What are government services?
Government Service means development providing municipal, provincial, or federal services directly to the public. This use class doesn't include protective and emergency services, minor or major impact utility services, and public education services.
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Substances or mixtures of substances known as buffers, act in living things to resist changes in ______. multiple choice question.
Answer:
pH
Explanation:
Substances can act as a buffer to resist changes in pH when something more acidic or basic is added
Substances or mixtures of substances known as buffers, act in living things to resist changes in pH.
What are the uses of pH?pH is an important quantity that reflects the chemical conditions of a solution. The pH can control the availability of nutrients, biological functions, microbial activity, and the behavior of chemicals.
If the pH of their body or their environment fluctuates too much the organism can die. This is particularly true for human beings. For example, blood is normally slightly basic, with a pH range of 7.35 to 7.45.
Different organs function at their optimal level of pH. For example, the enzyme pepsin requires low pH to act and break down food, while the enzymes in intestine require high pH or alkaline environment to function.
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The muscles of the eye need to make precise small motor movements. Which type of motor units would you find in the eye?
Answer:
The muscles of the eye need to make precise small motor movements. Therefore, ( SMALL ) motor units in the eye would be found find in the eye.
The final result of motor orders, the motor unit seems to be the smallest structural and functional part of the central nervous system. Single alpha motor neuron in the brain and the entire extrafusal muscle fibres it stimulates make up a motor unit. These muscle fibres can range in number from one or two to one thousand. A motor unit is made up of a single neuron, also known as a nerve cell, that provides nerves to a collection of skeletal muscles. This neuron activates all the muscle fibres in that specific motor unit to cause them to contract when it gets the brain's signals. Various kinds of fibres make up muscles.
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Select all the body and cellular processes that require cell division (mitosis or meiosis) to function.
The body and cellular processes that require cell division (mitosis or meiosis) to function growth and development, reproduction, replace dead cells
What is cell division?When people talk about "cell division," they typically refer to the process of creating new body cells called mitosis. Egg and sperm cells are produced through a process called meiosis. The basic process of life is mitosis.
To create more cells, cells need to divide. Binary fission, meiosis, and mitosis are the three processes they use to finish this division.
Growth and development depend on cell division, which is essential to all living things. Cell division, an essential part of all life's reproduction processes, enables organisms to pass on their genetic makeup to their progeny.
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A client has been diagnosed with syphilis and will be treated with penicillin. the client's medication will achieve a therapeutic effect through?
interference with cell wall synthesis. A injection of long-performing Benzathine penicillin G can remedy the early degrees of syphilis. This consists of primary, secondary, or early latent syphilis. CDC recommends 3 doses of long-performing Benzathine penicillin G at weekly periods for past due latent syphilis or latent syphilis of unknown duration.
Doxycycline and tetracycline for 28 days were used for decades and are the simplest ideal options to penicillin for the remedy of latent syphilis. Doxycycline is the desired opportunity to penicillin because of its tolerability.
The first signal of syphilis is a small sore, known as a chancre (SHANG-kur). The sore seems on the spot wherein the micro organism entered your body. While maximum humans inflamed with syphilis broaden simplest one chancre, a few humans broaden numerous of them.
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is table salt a compound? how can you tell?
Answer: Salt is an ionic compound, consisting of a crystal, lattice structure of the two ions Na+ and Cl-. Salt water is full of sodium chloride molecules.
Explanation:
hope this helps
Answer:
Chemically, table salt consists of two elements, sodium (Na) and chloride (Cl). Neither element occurs separately and free in nature, but are found bound together as the compound sodium chloride.
HOPE IT'S HELPS YOUWhile looking at tissues slides with a microscope, you identify an epithelial tissue that consists of 4 layers of thin, flat cells. this epithelial tissue would be classified as ___________.
While looking at tissues slides with a microscope, you identify an epithelial tissue that consists of 4 layers of thin, flat cells. This epithelial tissue would be classified as stratified squamous.
What is stratified squamous epithelium?Squamous (flattened and scale-like) epithelial cells make up the top layer of a stratified squamous epithelium, which is a stratified epithelium. Cuboidal or columnar cells may be present in the deeper layers. While some stratified squamous epithelia are little or not at all keratinized, others are extensively keratinized. The stratified squamous keratinized epithelium has relatively flat cells on its surface. They are flat and dead at the same time. Organelles and the nucleus are absent. Our skin is waterproof because they are loaded with keratin, a protein.
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They have a daughter who is a dwarf with normal color vision. what is the probability that she is heterozygous for both genes?
The probability that the daughter is a heterozygote for both genes is 1.0
What is achondroplasia dwarfism?
The fibroblast growth factor receptor is a protein in the body that is impacted by the genetic disorder achondroplasia. This protein starts to behave incorrectly in a condition called achondroplasia, which slows the formation of bone in the growth plate cartilage.
As achondroplasia dwarfism is an autosomal dominant disorder it will be passed on to the daughter.
What is red-green color blindness?
The most prevalent form of color blindness is red-green color blindness. This disorder, also known as deuteranopia, is most likely a congenital one. In this, the person is unable to distinguish between red and green colors.
As this disease is X-linked and the mother is affected hence it will be transmitted to her daughter.
Hence, the daughter will carry the genes for both diseases and thus will be heterozygote.
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Newborns' immunity due to the transfer of antibodies across the placenta is an example of?
Newborns' immunity due to the transfer of antibodies across the placenta is an example of naturally acquired passive immunity.
In the field of biology, passive immunity can be described as a type of immunity in which antibodies from another source are given in order to produce an immune response in an individual. A natural acquired passive immunity is a kind of passive immunity in which the antibodies are produces inside another person rather than synthesized in a lab.
As a baby in the womb cannot initially make its own antibodies, the igG antibodies are transported from the mother through the placenta to the child in order to generate an immune response.
As the newborn receives antibodies of the mother which are naturally produced by the mothers body, hence such a kind of immunity in the newborn is an example of naturally acquired passive immunity.
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Eukaryal proteins that are secreted outside of the cell undergo modification before secretion. which organelles are involved in this secretion pathway?
The organelles that are involved in this secretion pathway are endoplasmic reticulum and Golgi apparatus.
What is meant by secretory pathway?
The endoplasmic reticulum, the Golgi apparatus, the vesicles that move between them, the cell membrane, and the lysosomes are all parts of the secretory pathway. It is known as a "secretory pathway" since it is how the cell releases proteins into the extracellular space.
Normally, secretory proteins move from the endoplasmic reticulum to the Golgi and then to the plasma membrane, where they are released into the extracellular environment. However, many substrates also travel to these locations by improbable routes.
Question :
Eukaryal proteins that are secreted outside of the cell undergo modification before secretion. Which organelles are involved in this secretion pathway?
a) the mitochondria and endoplasmic reticulum
b) the mitochondria and Golgi apparatus
c) the endoplasmic reticulum and Golgi apparatus
d) the endoplasmic reticulum and lysosome
e) the lysosome and mitochondria
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7) state 2 key characteristics and 2 examples for each of the following phyla: A) Mollusca B) Nematoda C) Arthropoda D) Annelida
Answer:
Mollusca
Produce a shell reinforces with calciumBilateral symmetryExamples: Snails, octopus, and clamsNematoda
Bilateral symmetryCylindrical in shapeExamples: Hookworm and eelwormArthropoda
Hard exoskeleton made of chitinSegmented bodies, jointed limbsExamples: Insects, spiders, and crabsAnnelida
Have segmented bodiesHave mouth and anusExamples: Earthworm and leachNeuroscientists study the nervous systems of other animals such as slugs, snails, fruit flies, rats and monkeys because:_______.
Neuroscientists study the nervous systems of other animals such as slugs, snails, fruit flies, rats, and monkeys because all animals are related so if we study them we will know more about human brain.
A neuroscientist is someone who is curious about the human brain, its functions, physiology, morphology, how it behaves etc. They study all the facts and acquire knowledge by working on different projects including different insects and animals to unravel the mysteries of human mind.
The study revolves around the functioning of the nervous system and all of its different cells that are involved and the people that study them are called neuroscientist, who may or may not be a person from the medicine stream.
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List and describe different ways a population can become reproductively isolated from other populations of the same species. (3)
When populations grow to be re-productively isolated, they are able to evolve into separate species. Reproductive isolation can expand in a number of ways, which include behavioral isolation, geographic isolation, and temporal isolation. Specification is the formation of a brand new species.
Factors including geography, conduct, and time can separate populations and cause reproductive isolation. In geographic isolation, the populace is separated via way of means of a bodily barrier, including mountains, rivers, and oceans. In conduct isolation, behavioral styles set variations among species in phrases in their interbreeding strategies including courtship rituals and reproductive strategies. On the opposite hand, time acts as an setting apart mechanism if species reproduce offspring at exceptional times.
The critical concept right here is that after populations are geographically separated, they'll diverge from one another, each with inside the manner they appearance and genetically. These modifications may arise via way of means of herbal choice or via way of means of random chance (i.e., genetic drift), and in each instances bring about reproductive isolation.
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When organisms leave the group they were born into and join another group, this can alter allele frequencies in the new group. What mechanism is this?.
When organisms leave the group they were born into and join another group, this can alter allele frequencies in the new group. This mechanism is called gene flow.
Allele frequency is a relative term that tells about the frequency of an allele in a population. To calculate allele frequency, the total number of allele of interest is divided by the total number of all the alleles present in that population.
Gene flow is the movement of the genes. It can move into a population or move away from the population. This results in change in the total gene pool of a small population. The migration can either ne natural or forced.
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The fact that the base of the basilar membrane responds best to high frequencies supports the ________ theory of hearing.
The fact that the base of the basilar membrane responds best to high frequencies supports the Place theory of hearing.
The place theory of hearing states that the different parts of the basilar membrane respond to sounds of different frequencies. We hear different pitches due to specific frequencies vibrating specific parts on the basilar membrane.
As mentioned, the base part of the basilar membrane responds best to high frequencies but the tip of the basilar membrane won't respond in the same way. the tip of the basilar membrane will respond best to sounds of low frequency.
It also states that the pitch of a sound is determined by the place of vibration of the membrane.
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we can hear different pitches due to specific sound frequencies causing vibrations in specific parts on the basilar membrane of the cochlea
__________ amino acids are those amino acids that do not need to be obtained from the diet because the body is capable of synthesizing (producing) them.
Actionable information about malicious actors as well as their tools, infrastructure, and methods is called _______________.
Actionable information about malicious actors as well as their tools, infrastructure, and methods is referred to as a script kiddie.
What is Script kiddie?This is refers ti a individual who is unskilled and uses tools and infrastructures which are developed by others to attack computer systems and networks.
These tools include different types of scripts and programs and they are also used in attacking websites so as to obtain vital and valuable information needed for various purposes. This individual is usually relatively inexperienced in this sort of dealings which is why he/she is referred to as a script kiddie.
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Which nitrogenous waste removed by the kidney is produced by the breakdown of nucleic acids?
Answer:
Nitrogenous waste removed by the kidney is produced by the breakdown of nucleic acids is uric acid.
Explanation:
Purine nucleotides are broken down metabolically into uric acid, which is a typical part of urine. Increased levels of uric acid into the blood may cause arthritis and are linked to other illnesses including those of diabetes and the development of kidney stones made of ammonium acid urate. Nitrogenous wastes like Urea as well as uric acid are indeed the primary nitrogenous waste products. Whereas uric acid is produced by the breakdown of nucleotides, urea is produced by the breakdown of amino acids. The metabolism of amino acids produces urea, which is the body's primary nitrogen-containing- containing waste product. Purine metabolism generates uric acid as a byproduct. Because of the absence of uricase, a crucial enzyme that transforms uric acid into water-soluble compound active ingredients, high levels of blood uric acid have the potential to remain in humans as well as relatively high primates.
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Classifying microorganisms poses a greater challenge compared to higher organisms largely because _
Microorganisms, often known as microbes, are minute organisms that can be either single cells or colonies of cells. Ancient texts, including those found in India's Jain scriptures from the sixth century BC, express suspicions about the potential existence of unseen microscopic life. bacteria, archaea, fungus (yeasts and molds), algae, protozoa, and viruses are the main categories of microorganisms.
Why microorganisms are important ?In addition to producing oxygen and carbon dioxide, microorganisms also fix atmospheric nitrogen into forms that are useful to a variety of creatures. They contribute to the gut microbiome, which aids in the digestion of food by animals. Some microbe species are symbiotic by nature.
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What type of epithelium lines the urinary bladder and urinary passageways? select one: a. cuboidal b. columnar c. pseudostratified d. transitional e. squamous
D. Transitional epithelium: The layers of cells that make up a transitional epithelium, often referred to as urothelium, flatten out when stretched. It allows your bladder to expand and lines the majority of your urinary tract.
The interior of the urinary bladder is lined with what kind of epithelium?
The mucous membrane that lines the interior of the ureters and the transitional epithelium that lines the bladder's interior are one and the same. The mucosa folds numerous times when the bladder is empty, and these folds are known as rugae. The transitional epithelium and rugae allow the bladder to expand when it fills with pee.
What kind of epithelium do you have in the interior of the urine bladder? Transitional epithelium, which expands when the organs become inflated with urine, forms the lining of hollow urinary organs.
Epithelium:
One of the four primary forms of bodily tissue, epithelial tissue covers both internal and external surfaces in your body and is present in all of your organs. Depending on where it is in your body, it has a variety of different structures and functions.
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A woman suffers from ______ if endometrial tissue begins to grow within her abdominopelvic cavity. multiple choice question.
A woman suffers from Endometriosis if endometrial tissue begins to grow within her abdominopelvic cavity.
What is endometriosis?The endometrium, the tissue that normally coats the lining of your uterus, grows outside of it when you have endometriosis. This illness frequently causes pain. Endometriosis frequently affects the tissue lining your pelvis, fallopian tubes, and ovaries. With each menstrual cycle, endometrial-like tissue that has endometriosis acts like endometrial tissue would, thickening, deteriorating, and bleeding. However, because it can only go inside your body, this tissue becomes entrapped. Endometriomas, also known as endometrial cysts, can develop when endometriosis affects the ovaries. Endometriosis can occasionally cause severe pain, particularly during menstruation. Problems with fertility may also develop.Learn more about the endometriosis with the help of the given link:
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A bacterium that has a tuff (multiple flagella) of flagella distributed on one end are peritrichous.
a. true
b. false
False, A bacterium that has a tuff (multiple flagella) of flagella distributed on one end are Lophotrichous.
Lophotrichous- A tuft of flagella protrudes from either one or both ends of the cell in this situation. These may revolve both clockwise and counterclockwise and are also referred to as polar flagellum. for instance, Spirillum volutans.
Peritrichous- In this, many flagella are dispersed at random across the whole bacterial cell. Since they are present throughout the entire organism, they are not polar flagella. These flagella revolve against the clock. They come together to create a bundle that propels the creature forward. E.g. - E. coli.
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