Answer:
to. 1. Cell-mediated immunity Cytotoxic T lymphocytes attack and destroy foreign cells and viruses Antibody-mediated immunity
b.1. Cell-mediated immunity T cells mature in the thymus before they circulate. Immune.
C. 1. Cell-mediated immunity B cells differentiate into plasma cells.
re. 2. Antibody-mediated immunity Antibodies adhere to specific targets.
me. 1. Cell-mediated immunity B cells mature in the red bone marrow before they circulate the antigen.
f.1. Cell-mediated immunity Memory T cells are subsequently activated by the same 6 antigens.
g.3. Immune surveillance NK cells monitor peripheral tissues for cancer and abnormal cells.
Explanation:
Cellular immunity is mediated by the cells of the immune defense, it presents different times, in the first time the PMN appear, in the second time the antigen presenting cells, and lastly the lymphocyte lineage.
Antigen presenting cells have the ability to phagocytose and express antigen on their surface to facilitate the formation of antibodies.
Surveillance immunity refers to the lymphocytes that are responsible for monitoring or controlling cell mutations or uncontrolled growth due to genetic mutations.
Neoplastic cells express histocompatibility complexes on their surface that make them recognized by these lymphocytes and this is how they are responsible for inducing self-destruction or phagocytosis of the neoplastic cell.
Humoral immunity refers to the chemical substances that function as mediators of cell activity, these are: pro and anti-inflammatory cytokines, complement chain, nitric and nitrous acid, oxygen free radicals, interleukins, growth factors and tumor necrotic factor alpha - beta
Helpppppppp aquatic questionnnnn will give brainliestt and most points i can
Answer:
6.c
8.c
I'm not sure about the rest.
PLEASE HELP ITS DUE IN 30 minutes!!! which two statements explain why a student standing at the top of a step stool doesnt move downwards
Answer:
b. The step stool exerts a force on the student in the opposite direction of gravity.
c. A student exerts an upward force on the step stool equal to the gravitational force
Explanation:
It is true that gravity is the force that pulls the objects down to the earth but there are some forces that oppose the statement.
In the given situation, the student is unable to fall down from step stool is because of two forces one, the force exetred by step stool on student and two, the force exerted by the student on step stool.
The step stool exerts a force on the student in the opposite direction of gravity that gives stability to the step stool and an upward force on the step stool equal to the gravitational force helps the student to climb the stool.
Hence, the correct option are b and c.
An open spinal defect characterized by a protrusion of meninges and spinal cord through the defect, usually within a meningeal sac, is called :_______
Answer:
This question lacks options, options are:
a. meningocele
b. spina bifida occulta
c. Meningomyelocele
d. Arnold-chiari syndrome
The correct answer is c.
Explanation:
Spina bifida is a neural tube defect that usually runs in families. Spina bifida occurs due to an abnormality in the development of the spinal cord in the first trimester of pregnancy. The defect can only be associated with a protrusion of the membrane that covers the spinal cord (meninges), called a meningocele, or with some neural elements, called a meningomyelocele. Spina bifida can cause mild to severe physical and mental disabilities, depending on the size and location of the opening in the spine, and whether the spinal cord and nerves are affected. Myelomeningocele is a defect in which a fluid sac containing part of the spinal cord and nerves exits through an opening in the baby's spine, causing nerve damage. Also called "open spina bifida," this disease causes moderate to severe disabilities, such as trouble going to the bathroom, loss of sensation in the legs or feet and paralysis in the legs.
Definition: This is a type of protein found in the cell membrane, which regulates the coming and going of substances into or out of the cell.
Name the two different types of tissue in the transport system of a flowering plant
Answer:
Vascular tissue transports water, minerals, and sugars throughout the plant. Vascular tissue is made up of xylem tissue and phloem tissue. Xylem tissue transports water and nutrients from the roots upward. Phloem tissue carries sugars from the sites of photosynthesis to the rest of the plant.
Explanation:
Plz help I don't know the answer
Answer:
The answer to the question is option D
List five broad categories of materials and living things that make up Earth, from its core to its
atmosphere. Then describe how each of these things interacts with at least two others on your list.
Answer:
water, dirt (siol, rock and stuff) air, fire and bacteria
Explanation:
The five broad categories of materials and living things that makeup earth, from its core to its atmosphere are:
AirWaterSoilFireDecomposersWhat is Atmosphere?
The atmosphere is defined as an area consisting of air and various gases covering the whole mass of our environment.
Decomposers increase the fertility of the soil by converting organic substrate into an inorganic form. This gives a required condition to plants for their proper development. Water makes soil moisturized, ideal conditions for decomposers to play their own functional role. In this way, all the above factors are dependent on one another and make up the earth, from its core to its atmosphere.
Therefore, above are the five broad categories of materials described briefly.
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2. What step is necessary before joining
the glycerol and fatty acid molecules?
(Think of what needed to be done in
order to join the monosaccharides.)
Use the filled in models to create the lipid.
Answer: non- glucose monosaccharides enter glycolysis so maybe that's it?
Explanation:
in which biome would you expect to find each loaction given the precipitation and temperature data
b) Whale sharks are the largest fish in the sea. They are sharks, but
are considered to be "gentle giants." Being filter filters, they swim
with their mouths open wide, collecting plankton and small fish.
They may grow to be 32.8 feet ( m) in length and may
weigh in at an enormous 41, 200 pounds ( _kg).
Show your work for both conversions here:
12. You may have noticed that it is much easier
Show your work for both conversations here:
Answer:
Explanation:answer one 9.8 answer two 18688 those are your answers
________ is the ability to move the trunk and back muscles as far as possible. Dynamic strength Dynamic flexibility Static strength Explosive strength Extent flexibility
Answer:
Extent flexibility is the ability to move the trunk and back muscles as far as possible.
Answer: Extent flexibility
Explanation:
PLEASE HELP! WILL GIVE BRAINLIEST! Are traits controlled by dominant alleles more common than traits controlled by recessive alleles? Please explain
Answer:
Dominant alleles show their effect even if the individual only has one copy(for example Aa is going to show dominant result and so will AA) of the allele. For example, the allele for brown eyes is dominant, therefore you only need one copy of the 'brown eye' allele to have brown eyes (although, with two copies you will still have brown eyes). For recessive you need to have both copies showing recessive for example aa if it is Aa or aA it will not be recessive.
So there is a bigger chance of dominant alleles
So can I have my brainlest now........
Answer:yes
Explanation:
What characteristic(s) might a human and a cat with extra sex chromosomes (XXY, share?
Answer:
There can be things common if a human and cat have extra sex chromosomes (XXY) that includes they are both males and they both have Klinefelter syndrome
In both human and cat, sex chromosome is represented as XY and because of an extra sex chromosomes (XXY) both will be male as female has XX sex chromosome.
Both human and cat will suffer from Klinefelter syndrome because extra chromosome can cause any hormonal or genital disorder and Klinefelter syndrome is a disorder in which humans have small undescended testes or small penis.
where do fungi derive their nutrition from?
Answer:
Fungi get their nutrition by absorbing organic compounds from the environment. Fungi are heterotrophic: they rely solely on carbon obtained from other organisms for their metabolism and nutrition.
Answer: fungi get there nutrition by absorbing organic compounds from the environment ...fungi are heterotrophic : the rely solely from carbon obtained by other organisms for their metabolism and nutrition..
Explanation:
A theory is an important part of science because it can be used to A. Create better questions B. Create better experiments C. Test a hypothesis D. Make predictions
A student designed an experiment to test the affect of salt on the number of plants that live in water. What is the dependent variable in this experiment? A. The water B. Water temperature C. The number of plants living in the water D. The amount of salt in the water
What is an appropriate way to analyze the results of an experiment A. Creating a graph B. Creating a data table C. Making observations D. Asking questions
What is a control group used for? A. Making an observation B. Making a comparison C. Designing an experiment D. Making a hypothesis
What I had was #1 D #2 A #3 B #4 A
Answer:
I got
1 = B
2 = D
3 = C
4 = B
Explanation:
With a theory, you can have a better understanding of your experiment and know what to do specifically.
The amount of salt in the water is dependent because if you were to put too much salt or too little salt in the water, it was make a difference.
I either chose C or D but I think C fits better with what you have to keep a look out for while analyzing an experiment.
A control group is basically like this:
Plant A has food coloring (Experimental Group)
Plant B has no food coloring (Control Group)
After a few days you look at the comparison of both plants (of course with the equal amount of sunlight and water and temperature.)
A theory is an important part of science because it can be used to: B. Create better experiments.
What is a theory?In Science, a theory can be defined as a carefully thought-out explanation of an aspect of the natural world which has been repeatedly tested and verified through the following:
A large number of independent experiments.ObservationsEvidence (facts)Measurements, evaluation, and analysis of test results.This ultimately implies that, a theory can only be formulated when a hypothesis has been verified by a large number of independent experiments and supported by factual evidences, with similar outcomes.
In conclusion, a theory is generally considered to be an important part of science because it can be used to create better experiments under controlled conditions.
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When you break down maple syrup into smaller units, these units are called
Answer:
This question lacks options, the options are:
a. nucleotides b. monosaccharides c. RNA d. triglycerides
The answer is B. Monosaccharides
Explanation:
Monosaccharides are the simplest units of carbohydrates. They contain one units of sugar, hence, are commonly called simple sugars. Monosaccharides include glucose, fructose etc. They contain basically carbon, hydrogen and oxygen elements in their structure.
Maple syrup is a syrup majorly composed of carbohydrates used generally as a sweetening purposes. It is extracted from trees of sugar maple and other maple species. Since the syrup is principally composed of sugar (carbohydrate), it is broken down to the simplest unit of any carbohydrate molecule called MONOSACCHARIDE.
An open spinal defect characterized by protrusion of meninges and spinal cord through the defect, usually within a meningeal sac is called:
Answer:
the answer to your question is meningoyelocele
Alternation of generations in plants permits(1 point) neither mitosis nor meiosis. only meiosis. both mitosis and meiosis. only mitosis.
Answer:
Alternation of generations in plants permits both mitosis and meiosis but at different stages.
The zygote will undergo many rounds of mitosis and give rise to a diploid multicellular plant called a sporophyte. Specialized cells of the sporophyte will undergo meiosis and produce haploid spores.
Hope it helps,
I'm not so sure.
Alternation of generation in plants permits both mitosis and meiosis.
What is an alternation of generation?Alternation of generation is found in some plants and algae where the generations are in subsequent generations of haploid and diploid generations.
The alteration of generation in plants is divided into haploid sporophyte which have n number of chromosomes. Diploid gametophyte have 2n number of chromosomes.
This generation rotates between asexual phase and sexual phase. Asexual generation produces spores and is called sporophyte. Sexual phase produces gametes and is called gametophyte.
It is seen in vascular plants such as mosses, liverworts and hornworts. Alteration of generation is called metagenesis.
Therefore, Alternation of generation in plants permits both mitosis and meiosis.
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Compared to its surroundings, the concentration of solutes is low inside a cell. So, the cell is in a ____ solution. A particular saw you in the cell uses energy Ford transit for from the cell two at surroundings. This type of transport is called ——
Answer:
hypotonic solution
sorry i dont understand the second one
Explanation:
Answer: The first blank is hypertonic and the second blank is active transport
Explanation:I got it right on Plato
what is a nucleotide
Answer:
A nucleotide is one of the structural components, or building blocks, of DNA and RNA. A nucleotide consists of a base (one of four chemicals: adenine, thymine, guanine, and cytosine) plus a molecule of sugar and one of phosphoric acid.
How would you describe amino acids in
proteins?
Answer:
__________________________
The 20 amino acids that are found within proteins convey a vast array of chemical versatility. The precise amino acid content, and the sequence of those amino acids, of a specific protein, is determined by the sequence of the bases in the gene that encodes that protein. The chemical properties of the amino acids of proteins determine the biological activity of the protein.
what species are humans
Answer:
Humans are homosephians and are mamals
What is Positive Growth?
Answer:Positive growth means the company is improving and is likely to show higher earnings, which should increase the share price. The opposite of positive growth is negative growth, and this describes the performance of a company experiencing a decline in sales and earnings.
Explanation:
Answer:
A rate or pace that something is ascending in the vertical or horizontal slope like form
Explanation:
A man has the A blood phenotype and his wife has the B blood phenotype. Their son has the O blood phenotype. Could this man be the father of this child
Answer:
NO
Explanation:
They would have formed AB blood type not O.
Besides changes to the amount of water, what environmental changes would
these organisms experience?
no problem ok
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Question 1 (1 point)
What is the type of energy called needed to catalyze a reaction?
3
Kinetic Energy
6
Activation Energy
9
Potential Energy
Free Energy
Answer:
Activation Energy
Explanation:
Reactions require an input of energy to initiate the reaction; this is called the activation energy (EA). Activation energy is the amount of energy required to reach the transition state. The source of the activation energy needed to push reactions forward is typically heat energy from the surroundings.
Elabora un párrafo utilizando las siguientes palabras; sistema nervioso, sistemas, neuronas, sistema endocrino, glándulas, hormonas, sangre, mensajeros químicos
Answer and Explanation:
El sistema endocrino esta compuesto por tejidos y glándulas que se encuentran en distintas partes del cuerpo y que cumplen funciones de control sobre distintos órganos. Se encarga de la síntesis y secreción de hormonas en función de las necesidades del organismo. Las glándulas secretan hormonas a la sangre que actúan como mensajeros químico y que son transportadas hasta los tejidos destino, donde transmiten la señal adecuada de regulación celular. El hipotálamo y la hipófisis son dos glándulas que se ubican en la zona central-inferior y en la base del cerebro, respectivamente. El hipotálamo regula el funcionamiento de la hipófisis a través de secreción hormonal. Secreta hormonas en capilares que se dirigen hacia la hipófisis. La hipófisis, también conocida como glándula pituitaria, secreta hormonas que se dirigen a distintos tejidos del cuerpo. Tanto el hipotálamo como la hipófisis están regulados por el sistema nervioso, cuyas unidades funcionales y estructurales son las neuronas. Estas se encargan de enviar impulsos nerviosos en la comunicación inter-neuronal. Ambos sistemas mantienen estrechos sistemas de comunicación.
Explain why a law is accepted as fact, but a theory is not
Answer:
A law is a fact because it cannot be changed. A theory on the other hand can be changed over the course of time.
Explanation:
Answer:
A law is 100% proven while a theory is not. A law is never wrong while a theory, although widely accepted or has been tested hundreds to thousands of times, may be found incomplete or eventually wrong.
Explanation:
match the binomials of some common local organisms from a two column list on the basis of generic and specific names
Answer:
African Elephant=Generic name(Loxodonta) and the specific name(africana).
Human Beings=Generic name(Homo) and the specific name(sapiens).
Maize plant=Generic name(Zea) and specific name(mays).
What happens to tissue muscle before and after workout
Answer:
the force your muscle to contract as hard as the can
Answer:
Short-Term Effects
In the short term muscle can become fatigued and sore for reasons like impaired blood flow, ion imbalance within the muscle, nervous fatigue, loss of desire to continue exercising, and most importantly, the accumulation of lactic acid in the muscle.