The difference between B-cell lymphocytes and T-cell lymphocytes is that B-cells originate from the bone marrow while the T-cells originate from the thymus.
What are lymphocytes?Lymphocytes are type of white blood cell with a spherical nucleus occurring in the lymphatic system. This include the following types of cells;
B cellsT cellsnatural killer cellsB-cells are lymphocytes developed in the bursa of birds and the bone marrow of other animals, that produces antibodies and is co-responsible for the immune system.
On the other hand, T-cells are lymphocytes from the thymus, that can recognise specific antigens and can activate or deactivate other immune cells.
Hence, it can be said that one of the differences between T and B cells of lymphocytes is their origin.
Learn more about lymphocytes at: https://brainly.com/question/1271207
#SPJ1
which sensory receptors are involved in hearing?(1 point) responses thermoreceptors thermoreceptors photoreceptors photoreceptors chemoreceptors chemoreceptors mechanoreceptors
Mechanoreceptors respond to physical forces in hearing.
In somatosensory receptors known as mechanoreceptors, extracellular stimuli are transmitted to intracellular signal transduction via mechanically gated ion channels. The most common types of external stimuli include touch, pressure, stretching, hearing, and motion. Both the surface and deeper layers of skin, as well as the area close to bones, include mechanoreceptors. The free nerve ends are often unencapsulated dendrites, and these receptors can be either encapsulated or unencapsulated. There are four main types of tactile mechanoreceptors: Pacinian corpuscles, Merkel's disks, Meissner's corpuscles, and Ruffini endings.
Read more about mechanoreceptors used in hearing:
https://brainly.com/question/1186777?referrer=searchResults
#SPJ4
Suppose that you are using colored beads attached to yarn as a model representing alleles of genes on chromosomes. This model could be used to show that independent assortment results in gametes containing?.
The model representing beads on yarn could be used to show that independent assortment results in gametes containing different combinations of alleles that originated from both the organism's male or female parent.
Using different colored beads attached to yarn can help us to understand the phenomenon of independent assortment easily. Like the different colored beads in the yarn, each allele on the chromosome has the ability to assort independently into gametes.
It is due to this independent assortment, that an offspring will have some of the alleles from the male parent and some from the female parent. As each colored bead on the yarn has the ability to move and assort independently, the same is the case for alleles.
Although a part of your question is missing, you might be referring to this question:
Suppose that you are using colored beads attached to yarn as a model representing alleles of genes on chromosomes. This model could be used to show that independent assortment results in gametes containing?
alleles that originated from either the organism's male or female parent, but not both.
a random combination of genetic information without a traceable origin.
different combinations of alleles that originated from both the organism's male or female parent.
identical genetic information
To learn more about independent assortment, click here:
https://brainly.com/question/2376592
#SPJ4
How did later
scientists adjust Hutton's law
of uniformitarianism?
Answer:
What impact did Hutton's findings have on other scientists?
Hutton urged additional research into Earth's past among other scientists. What is one technique to study the history of Earth? to establish how rock structures and strata were produced.
Explanation:
i hope that helps!!
Which claim is most likely based on pseudoscience?
Those claims which are not supported by scientific data are most likely to be based on pseudo science.
Other characteristics that help you distinguish between science and pseudoscience are:
Is not falsifiable It cannot be shown to be incorrect. strongly reliant on anecdotes:Personal experiences and testimonies make up the majority of the evidence.uses supporting evidence while disregarding or downplaying opposing evidence.Technobabble is the use of words that appear scientific but are improperly or illogically employed.Lacks a believable mechanism: Given what is known, it is impossible to explain how the claim may operate.Refuses to adapt: Doesn't improve or self-correct.exaggerates or makes outlandish claims: without enough support, makes enormous benefits promises.Confesses certainty: Mentions "evidence" and conveys ideas with total assurance.Demonstrates logical fallacies: Arguments contain logical fallacies. inadequate peer review:Prevents the scientific community from conducting a critical analysisClaims there is a plot to stifle their ideas: Scientific community criticism is a plotTo know more about pseudo science visit:
https://brainly.com/question/604092
#SPJ9
Answer: Seeds should be planted during specific moon cycles to achieve their potential.
Explanation:
Which of these battles marked the beginning of the American Revolution?
Battle of Bunker Hill
Battles of Lexington and Concord
Battle of Quebec
Siege of Boston
Answer: The Battles of Lexington and Concord
Explanation: The Battles of Lexington and Concord on 19 April 1775, the famous 'shot heard 'round the world', marked the start of the American War of Independence
I'm learning it yesterday LOL
Answer: Battles of Lexington and Concord
Explanation:I did this quiz if you don’t believe here is the proof
if rnase were heated to twice its tm in the absence of β-mercaptoethanol and then cooled to 4 °c, it would be in what state? choose one: a. random coil b. native state c. partially unfolded intermediate d. denatured
The correct answer [b] native state
Proteins are denatured by excessive heat. RNase will refold, though, because the disulfide links are still intact. Most proteins can't accomplish this.
What do you mean by protein?Large biomolecules and macromolecules known as proteins are made up of one or more extended chains of amino acid residues. Among many tasks that proteins carry out in living things include catalyzing metabolic processes, replicating DNA, reacting to stimuli, giving cells and organisms structure, and moving molecules from one place to another. The primary way that the proteins differ from one another is in the order of their amino acids, which is determined by the nucleotide sequence of their genes and typically causes a protein to fold into the certain 3D structure that controls its activity.
A polypeptide is an ordered sequence of amino acid residues. At least one lengthy polypeptide is present in every protein. Less than 20–30 residue polypeptides are frequently referred to as peptides and are rarely thought of as proteins. Peptide bonds and nearby amino acid residues hold the individual amino acid residues together. The sequence of a gene, which is encoded in the genetic code, determines the arrangement of amino acid residues in a protein.
The genetic code typically only defines the 20 conventional amino acids, but in some organisms, it may also include selenocysteine and—in some archaea—pyrrolysine. The residues in a protein are frequently chemically altered by post-translational modification shortly after or even during synthesis, which modifies the physical and chemical characteristics, folding, stability, activity, and ultimately the function of the proteins. Non-peptide groups, often known as cofactors or prosthetic groups, are sometimes added to proteins. Additionally, proteins can cooperate to carry out certain tasks, and they frequently join forces to create stable protein complexes.
To know more about protein visit: https://brainly.com/question/17095120
#SPJ9
wilson c, naber n, pate e, cooke r (2014) the myosin inhibitor blebbistatin stabilizes the super-relaxed state in skeletal muscle. biophys j 107:1637–1646
The discussion of "wilson c, naber n, pate e, cooke r (2014) the myosin inhibitor blebbistatin stabilizes the super-relaxed state in skeletal muscle. biophys j 107:1637–1646" is given in the below paragraph-
It has been shown that different muscle types exhibit the super-relaxed state of myosin (SRX), in which the myosin ATPase activity is severely reduced. The interacting-heads motif, a structure that binds to the thick filament's core, has been postulated as the mechanism by which myosin heads in this condition are inhibited. We have used measurements of single ATP turnovers to demonstrate that the myosin inhibitor blebbistatin stabilizes the binding of myosin heads to the thick filament in both fast and slow skeletal muscle, further supporting the idea that the myosin heads in the SRX are also in the interacting-heads motif. We discover that blebbistatin can stabilize the SRX even in circumstances where it would normally be unstable. In both slow and fast skeletal muscle, we demonstrate using blebbistatin that spin-labeled nucleotides coupled to myosin have an orientated spectrum in the SRX. In relaxed skeletal muscle fibers, this is, to our knowledge, the first observation of directed spin probes on the myosin motor domain. Because the spectra for skeletal muscle with blebbistatin are comparable to those seen in relaxed tarantula fibers without blebbistatin, it may be concluded that the SRX's structural properties are the same regardless of the type of muscle or the presence or absence of blebbistatin. Since the nucleotide site is in a closed conformation, spin probes coupled to nucleotides bound to myosin are mobile.
What is myosin?Myosins are a class of motor proteins well recognized for their functions in the contraction of muscles and a variety of other eukaryotic motility processes. Myosin is ATP-dependent and in charge of motility based on actin. By Wilhelm Kühne, the first myosin was identified in 1864.
To learn more about myosin with the help of given link:
https://brainly.com/question/23185374
#SPJ9
What is the best describes the graphs
The statement that best describes the graph is that the variables have a direct relationship. That is option B.
What is direct relationship of variables?Variables are said to be in a direct relationship when the increase of one variable leads to the increase of the other or when the decrease of one variable leads to the decrease of the other.
For example, the relationship between volume and temperature is a direct relationship because of the following reasons:
The graph is a straight line graph,The graph intercepts at the origin (0,0)Therefore, the graph shows a direct proportional relationship between the volume and the temperature.
Learn more about variables here:
https://brainly.com/question/27894163
#SPJ1
a cell produces a protein that will be used by other cells. when the cell releases the protein into the extracellular fluid, what function has it performed?
Answer:
secretion
Explanation:
Secretion is a fundamental cellular process involving the regulated release of intracellular products from cells. Physiological functions such as neurotransmission, or the release of hormones and digestive enzymes, are all governed by cell secretion.
Salivary amylase is an enzyme that begins breaking down carbohydrates while the food is still in the mouth. Once the food passes into the stomach, what happens to the salivary amylase?.
Answer:Saliva contains special enzymes that help digest the starches in your food. An enzyme called amylase breaks down starches (complex carbohydrates)
Explanation:
select the true statements concerning tracheids. check all that apply tracheids are responsible for anchoring the plant to a substrate.tracheids are responsible for anchoring the plant to a substrate. pterophytes lack tracheids but have euphylls.pterophytes lack tracheids but have euphylls. without tracheids colonization of land would not have been possible.without tracheids colonization of land would not have been possible. all of the large dominant extant land plants are tracheophytes.all of the large dominant extant land plants are tracheophytes.
The true statements about tracheids are: tracheids are responsible for anchoring the plant to a substrate; pterophytes lack tracheids but have euphylls, and; without tracheids colonization of land would not have been possible.
Tracheids are one of the components of the vascular tissue called xylem. It is made up of dead cells. It is an elongated structure that has tube-like appearance. It is involved in the conduction of water and minerals.
Pterophytes are also called the pteridophytes that were the first vascular terrestrial plants. These are spore producing plants that have no flowers or seed. The example of pteridophytes are Marsilea, Azolla, Salvinia, etc.
To know more about tracheids, here
brainly.com/question/2934880
#SPJ1
ribosomes provide the scaffolding on which trnas interact with mrna during translation of an mrna sequence to a chain of amino acids. a ribosome has three binding sites, each of which has a distinct function in the trna-mrna interactions.
The three binding site of ribosomes are: iE- site empty, P- site AUA with three amino acids and A- site UCC with one amino acid
Ribosome through the provision of scaffolding, during the process of amino acid sequencing helps in the interaction of tRNA with mRNA. The ribosome has three binding site and each of the binding sites all have distinct function in tRNA- mRNA interactions.
During the first step tRNA binds to the A site of ribosome, then during the second step formation of the peptide bonds where tRNA binds with A site from P site. The third and last stage which is movement of the mRNA through the ribosome in which tRNA carrying the growing polypeptide shifts to the P site.
Learn more on Ribosomes from:
https://brainly.com/question/15718892?referrer=searchResults
What is the importance of subscripts when writing a chemical equation? (3 points)
a claim, evidence , and reasoning.
An explanation, according to the Claim, Evidence, Reasoning (CER) model, consists of: A claim that answers the question. Data from students provides evidence. Reasoning using a rule or scientific principle to explain why the evidence supports the claim.
What exactly is evidence in biology?Biologists use a variety of evidence types to track evolutionary changes over long time periods. Homologous physical features shared by species, for example, can provide evidence for common ancestry (but we have to be sure they are really homologous, and not the result of convergent evolution).
Preservation of biological evidence from crime scenes is critical because DNA can provide the best evidence of innocence - or guilt - when a case is reviewed. Without the biological evidence, none of the nation's more than 350 DNA exonerations would have been possible.
Any biological sample, including liquid blood or bloodstains, liquid saliva or saliva stains, and liquid semen or dried semen stains (including from vasectomized males) deposited on virtually any surface; genital/vaginal/cervical samples collected on can be questioned or unknown.
As a result, the Claim, Evidence, Reasoning (CER) model states that: A claim that answers the question
To know about evidence in biology refer to:
https://brainly.com/question/28446728
#SPJ13
Which statement best describes the role of the cell membrane in this model?
O The cell membrane is an impermeable barrier that prevents water from entering the cell.
O The cell membrane allows solutes to enter the cell, which causes the cell to shrink.
O The cell membrane allows water to enter and leave the cell.
Answer:
The cell membrane allows water to enter and leave the cell
A population of mice in a meadow is growing in a pattern of logistic growth. Arrange these events in the order in which they occur, with the first event on top and the last event on the bottom. Not all of the events will be used.
The population increases exponentially.
The population fluctuates near the carrying capacity.
The rate of population increase begins to slow down.
Answer:
1. The population increases exponentially
2. The rate of population increase begins to slow down
3. The population fluctuates near the carrying capacity
Explanation:
The population usually fluctuates exponentially but as the population grows beyond the carrying capacity, the population starts settiling.
If glucose is the sole energy source for cellular respiration in an animal, what proportion of the carbon dioxide exhaled is derived from oxidation of pyruvate to acetyl coa?.
The proportion of the carbon dioxide exhaled derived from the oxidation of pyruvate to acetyl CoA is 1/3.
Pyruvate is produced by glycolysis in the cytoplasm and its oxidation takes place in the mitochondrial matrix before chemical reactions begin, pyruvate enters the mitochondrion crossing the inner membrane and arriving at the matrix.
Pyruvate + NAD⁺ + CoA-SH ⇒ acetyl-CoA + NADH + CO₂
This is the reaction of the conversion of pyruvate into acetyl CoA.
1 molecule of pyruvate is converted into 1 molecule of carbon dioxide.
Also, 2 molecules of pyruvate are converted into 2 molecules of carbon dioxide (as glucose on glycolysis yields 2 molecules of pyruvate).
Acetyl-CoA also contributes to the citric acid cycle and generates two molecules of CO₂.
Pyruvate thus generates a total of 3 molecules of CO₂, whereas glucose generates 6 molecules of CO₂ (as glucose on glycolysis yields 2 molecules of pyruvate)
Thus, Fraction = 2/6 = 1/3.
To know more about citric acid cycle visit the link:
https://brainly.com/question/4677437?referrer=searchResults
#SPJ9
Which statement explains how fertilizers impact an ecosystem
Answer: Fertilizers kill off important nitrogen fixing bacteria.
Explanation: uhope that helped you didnt put the statements "Which statement explains how fertilizers impact an ecosystem"
A Name the following:
1. The vein that carries oxygenated blood.
2. A lymphatic organ.
3. The protein produced by certain white blood cells in response to a foreign substance.
4. The contraction phase of the heart.
5. Iron pigment present in erythrocytes.
Answer:
1.pulmonary veins. 2.spleen...
3.antibody 4.systole. 5.haem
Explanation: 1. Veins generally has the role carrying deoxygeneted blood but in our body we have one vein that carries oxygeneted blood ,the important fact to remember is veins take blood into the body .So the vein that carry oxygeneted blood will also carry blood into the heart from lungs and the opening of heart is the left auricle.
2. Spleen is the lymphatic organ close to armpit which helps in defence to body and produces lymph
3.antibody - antibodies are produced by cells of WBC against foreign entity called antigen.
4.systole- the stage of contracted heart is systole and relaxed heart is diastole.
5.heam - the answer is haem because haem means iron and iron imparts redness to blood plasma ,and with globin it form haemoglobin.
Answer the Question Below...
Are lungs hollow?
What is Riccia?
Ty... ಠ∀ಠ
Riccia is a bryophyte.
Riccia is a genus of liverworts within the order Marchantiales. these vegetation are small and thalloid, that isn't always differentiated into root, stem and leaf.
Riccia is a bryophyte. Bryophytes have sporophytes which increase on the gametophyte.it's far formed after syngamy and is dependent on the gametophyte for vitamins. A based sporophyte is a function characteristic of bryophytes
The genus Riccia (liverworts) are small thalloid flora that aren't differentiated into roots, stems and leaves. they're dichotomously branched and shape rosettes. they're typically monoecious and their sexual organs are antheridia and archegonia. Asexual replica is by the mode of spores.
Riccia, genus of liverworts (small, creeping flowers) in the order Marchantiales, widely distributed all through the world.
Riccia fluitans is the most effective really aquatic liverwort in Florida. plants were accrued from scattered locales inside the northern, central, and southern areas. not like most different liverworts, it floats freely in tangled clumps or mats below the water floor.
Learn more about bryophyte here:-
https://brainly.com/question/841138
#SPJ1
Atoms transfer from the non-living portions of our environment to the living parts of our environment through the _____.
A. air cycle
B. food chain
C. rock cycle
D. phosphorous cycle
quizlet digeorge syndrome results in greatly decreased t cell numbers and function and is evidenced by abnormal development of facial features that are controlled by the same embryonic pouches; these include low-set ears, fish-shaped mouth, and other altered features.
Digeorge syndrome results in greatly decreased t cell numbers and function and is evidenced by abnormal development of facial features that are controlled by the same embryonic pouches; these include low-set ears, fish-shaped mouth, and other altered features.
What is digeorge syndrome?
Digeorge syndrome is a defective condition that appears at birth stage due to deficiency of the T-cells and it also indicates some serious lifelong problems including learning difficulties and heart defects in children.
This medical problem is mostly found in children who suffer from defects like defective immune system, low calcium levels in blood and also show some emotional and behavioral issues.
Moreover, the symptoms of abnormal facial features include hooded eyes, enlarges nose-tip and long face, a small groove in upper lip as well.
If you need to learn more about digeorge syndrome click here:
https://brainly.com/question/10736832
#SPJ4
The complete question is:
A 5-year-old male presents with low-set ears, a fish-shaped mouth, and involuntary rapid muscular contraction. Laboratory testing reveals decreased calcium levels. Which of the following diagnosis is most likely?
a. B-lymphocyte deficiency b. T-lymphocyte deficiency c. Combined immunologic deficiency d. Complement deficiency
Lightning strikes are unpredictable because
Lightening is so unpredictable because of the fact that areas with a high potential for electric energy within a given thunderstorm that are necessary to generate lightening are continuously changing as the storm progresses. Therefore the path that a bolt of lightening will take is almost completely random.
At the end of the electron transport chain, where is the light energy that was absorbed and converted by chlorophyll stored?.
At the end of the electron transport chain, the light energy is stored in ATP and NADPH molecules.
What are the steps of the electron transport chain reaction?In Photosystem II, chlorophyll is used to store radiant energy.
The energy level of the electrons provided by the water molecules increases when the pigment molecules absorb light.
The excited electrons travel from Photosystem II to Photosystem I at a lower energy level via the electron transport chain.
New electrons are taken out of the water molecules to replace the excited electrons as they leave photosystem II.
The photosystem I electrons are transferred to another electron acceptor by the absorption of light energy, where they are then transported back and used to create NADPH molecules.
As electrons leave Photosystem I, new electrons from Photosystem II enter to take their place.
Hydrogen ions are still present in the thylakoid lumen after the water molecule disintegrates, and the ATP synthase pumps them to the stroma.
ATP molecules are made using the energy that has been released.
Hydrogen ions go back from the stroma to the thylakoid compartment.
Therefore, at the end of the electron transport chain, the light energy is stored in ATP and NADPH molecules.
Learn more about Electron Transport Chain here:
brainly.com/question/25532497
#SPJ4
What is metabolism ?
Ty :))
Answer:
Metabolism is how your body processes food, sugar, and everything you know. The higher your metabolism, the skinnier you are.
Explanation:
Hope this helps!
Cell Structure X is known as a ?
Answer: Structure X is only found in plant cells, and structure Y is found in plant and animal cells.
Explanation: The structure found on the outside of the onion cell is the cell wall, which is specific to plants. The structure found on the outside of the skin cell is the cell membrane, which is found on all cells.
Glycolysis occurs in all living cells. Which row correctly identifies the cell
structure involved and the products of glycolysis respectively?
A. mitochondria: 36ATP, CO₂, H₂O
B. cytoplasm: 2ATP, pyruvate, NADH
C. mitochondria: 2ATP, pyruvate, NADH
D. cytoplasm: 36ATP, CO₂, H₂O
Glycolysis occurs in all living cells. The location and products of glycolysis in the cell are: (B) cytoplasm: 2ATP, pyruvate, NADH.
Glycolysis is also called the EMP pathway. It is common to all the organisms either aerobic or anaerobic. This occurs in the cytoplasm of the cell. The process does not require oxygen and is a composed 10 steps of chemical reactions that ultimately form 2 molecules of pyruvate.
NADH is a coenzyme that participates in the various process of metabolism. It stands for Nicotinamide Adenine Dinucleotide (NAD) + Hydrogen (H). Its key role is to synthesize energy for the body.
To know more about NADH, here
brainly.com/question/14493044
#SPJ1
2. Imagine that you arrived on the island before the tree
populations were extinct, but after the tree populations had
started to decline. Suggest a management plan that could have
helped the Easter Islanders save the tree populations from
extinction.
Answer:
Ecosystem collapse
Explanation:
Scientists have proven that the island was covered by forests until the 17th century. It's believed the trees were cut down by the ancestors of today's Easter Islanders in order to transport the giant stone statues - the Moai - as well as to build canoes, houses and fires to burn the dead.
the scapula and the clavicle generally move as a unit, and their only bony link to the axial skeleton is provided by the clavicle’s articulation with the .
the scapula and the clavicle generally move as a unit, and their only bony link to the axial skeleton is provided by the clavicle’s articulation with the sternum.
All of the limb bones as well as the bones that connect each limb to the axial skeleton are part of the appendicular skeleton. The pectoral girdle is made up of the bones that connect each upper limb to the axial skeleton (shoulder girdle). The scapula and clavicle are the two bones that make up this. On the front of the shoulder, on the S-shaped collarbone, is the clavicle. It is connected to the sternum of the thoracic cage, a component of the axial skeleton, near its medial end. Just above the shoulder joint, the clavicle's lateral end articulates (joins) with the scapula.
To learn more about sternum. Click, https://brainly.com/question/17738464
#SPJ4