Answer:
Antibodies are produced by _white cells__ and bind to specific _antigens_ on erythrocytes, causing __agglutination__, or clumping of erythrocytes.
Explanation:
Macrophages are one of the different types of cells that intervene in the organism's defense system against strange substances and pathogen agents. These cells are the principal actors in the immune response.
Macrophages have several functions. They are the principal phagocytes of tissues, capable of recognizing different strange molecules that penetrate the organism, such as bacterias, parasites and, viruses. Macrophages phagocyte these substances and eliminate them, a process known as phagocytosis. When macrophages are activated, they release cytokines that favor inflammation response, which is used to neutralize the pathogen agent. When macrophages phagocyte strange substances, they show the antigens in their surfaces to be recognized by lymphocytes.
Antigens are defined as the strange substances that enter the organism and trigger a series of cellular events that produce defense mechanisms. Antibodies recognize antigens as invaders.
In the organism, there are leucocytes or lymphocytes (white cells) in charge of immune defense. These are B cells, which produce antibodies, and T cells that can destroy infected cells from the body. They all circulate in the blood.
Antibodies are globular proteins produced by lymphocytes in response to the presence of strange molecules. Each type of antibody recognizes and combines with a particular antigen, immobilizing it. After that, the antigen is destroyed by other components of the immune system.
2. Why do scientists often use thermoacidophile group of archaebacteria for research?
Archaebacteria have some unique characteristics.
Although members of kingdom Archaebacteria share many characteristics with members of kingdom Eubacteria, some of their characteristics are unique.
One such characteristic is the ability of archaea to live in extreme conditions.
What is Thermoacidophile archaebacteria?Thermoacidophile archaebacteria are a type of archaea that thrive in extremely hot and strong acidic (with low PH) environments. Thermoacidophile archaebacteria can be found in harsh environments such as in geothermal area, in the deep ocean vents and hot springs. Most of the
Thermoacidophile archaebacteria are chemotrophs (converts chemicals to food). They use sulfur as their energy source. They absorb the sulfur gas that is being released in their environment and reduce it to hydrogen sulphide, fixing it into an energy source.
Thus, this could be the answer.
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All the following are ways by which animals help to sustain the carbon cycle except
A when they die, they decompose to release carbon atoms
B. feeding directly or indirectly on plants C. drinking water from streams and ponds
D. breathing
Answer:
Option(C): drinking water from streams and ponds
If a cell membrane were completely permeable to all substances, could the cell continue to live? Explain your answer in depth.
Read the information below then answer the questions which follow:
To grow, plants require water. They cannot get this water unless it is available in the soil. Plants
obtain water from the soil through their roots. It then passes up the stem and to the leaves and
flowers. The plant does not take all the water available in the soil. Much of the remaining water
evaporates into the surrounding air.
In an experiment, a stem which contained several flowers were placed in a beaker of water
containing red ink.
QUESTION 1
(1 mark)
What is the purpose of the experiment?
Answer:
I believe the experiment was too see if the flowers that would grow from the stem would turn out to be red in color. (Which is the reason they put red ink.)
(hope this helped :P)
explain how the tissue of the esophagus and tissue of the trachea can be differentiate
Answer:
Trachea: It is the wind pipe — making it a part of the respiratory system
Esophagus: It is the food pipe — making it a part of the digestive system
Trachea: It is shorter, 10–11 centimeters. It connects upper airway to the lungs
Esophagus: It is longer, 25 centimeters. It connects mouth to the stomach
Trachea: It is cartilaginous, made of C-shaped semicircular cartilages. They give it structural stability and prevents it from collapsing
Esophagus: It is muscular. It contracts in a wave-like motion through it’s length to propel food from mouth to stomach a.k.a swallowing
Trachea: It’s opening is protected by Epiglottis, a flap like structure, to prevent food from accidental entering the air passage. It prevents choking
Esophagus: It’s opening is protected by two sphincters. They are muscular rings that constrict to close the esophagus off when food is not being swallowed.
Trachea: It has 2 portions — cervical and thoracic i.e. neck and chest portions.
Esophagus: It has 3 portions — cervical, thoracic and abdominal i.e. neck, chest and stomach portions.
Why is the frequency of natural disasters increasing?
1. There are less natural hazards occurring
2. Human population in areas prone to natural hazards has increased
3 . Deaths from natural disasters has decreased in developed countries and increased in developing countries.
Human population in areas prone to natural hazards has increased
Long strands of genetic information are stored in ________. A. Enzymes B. Adenine C. Chromosomes D. Mutations
The genetic information is the encoded proteins passed through hereditary. The genetic information is stored in the chromosomes of the cel. Thus, option C is correct.
What are chromosomes?Chromosomes are the hereditary unit of an organism that passes from the parent cell through cell division and reproduction to the daughter cells.
The chromosomes comprise chromatin that is made of the proteins and DNA molecules wrapped around the histones to form a dense and compact structure.
They look like long threads that are present inside the cell's nucleus and code for specific information that gives the genotype and phenotype of an organism. It gets copied during the cell cycle.
Therefore, option C. chromosomes store the genetic information.
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1.If you could only eat one meal for the rest of your life, what would it be?
2. How are you finding the topic DNA and cell division
What is the biological impact of minimum catch sizes on a population of fish?
a. The population comes to be dominated by smaller, slower-growing individuals.
b. Older, less productive adults are removed, improving the population's health.
It applies a selective pressure for larger, faster growing fish.
d. The fish in the population produce more and healthier eggs to compensate.
C.
Please select the best answer from the choices provided
Ο Α
OB
Ос
OD
Answer:
answer is A.) The population comes to be dominated by smaller, slower- growing individuals
Assuming that a person going to community college can't afford to go to a four-year college is an example of ) a generalization. b) discrimination. O c) a stereotype. O d) tolerance.
What are the uses of natural fibers?
note :- please don't copy the answers from other websites.
Explanation:
The uses of natural fibers are :
1. it is used to make clothes
2. it is used to make roof tiles
3. it is used to make partition boards
4. it is used to make paper
NOTE : i have not copied this ans
A change in an organism's body is a(n)
A change in the environment is a(n)
A. instinctive, learned
B. internal stimulus, external stimulus
C. chemical signal, display
D. association, condition
Answer:
I believe is C. I might be wrong
Explanation:
¯\_(ツ)_/¯
A change in an organism's body is an internal stimulus, while a change in the environment is an external stimulus. Thus, the correct option is B.
What is the Environment?An environment may be defined as anything which is present in the surrounding of living entities through which it interacts for various purposes.
There are a lot of alterations in the body of an organism with respect to time. Apart from organisms, a lot of changes have also occurred in an environment gradually and continuously.
Changes in the organism's body are internal so it is called internal stimulus, while alterations in the environment are externally made so they are called external stimulus.
Therefore, the correct option for this question is B.
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Name the two layers that make up the skin, and identify a function for each layer.
what type of stream valley forms oxbow lakes ?
1. Youthful stream valley
2.mature stream valley
3. Old age stream valley
Answer:
I thik answer is 2 number
hi everyone,what's is climate change.hope its easy for u all think u
Which plant activities are directed by hormones? (select all that apply)
a. sunflowers following the sun to face it as it moves across the sky
b. leaves of deciduous trees changing colors in the fall
c. a green tomato turning red
d. a growing vine wrapping around a fence post
Answer:
All of the activities are directed by plant hormone
Answer:
it is all of them
Explanation:
Trust me I got 75% instead of 100 because i didnt chose all of them
Starch and protein digestion in a single stomach?
Answer:
Explanation: Protein digestion occurs in the stomach and the duodenum through the action of three main enzymes: pepsin, secreted by the stomach, and trypsin and chymotrypsin, secreted by the pancreas. During carbohydrate digestion the bonds between glucose molecules are broken by salivary and pancreatic amylase.
ich example best shows that the chemistry of water is helpful to plants?
Water’s polarity produces a high density, which allows water to move to the leaves.
Water’s bent shape causes a slow passage of nutrients up to the leaves of plants.
Water’s polarity causes cohesion that pulls other water molecules up through a plant.
Water’s bent shape reduces its own passage through the cell membranes of roots.
Answer:
waters polarity causes cohesion that pulls other water molecules up through a plant.
I hope this helps
why is repetition important in science?
Answer:
The repetition principle is important in scientific research, because the observational indexes are random variables, which require a certain amount of samples to reveal their changing regularity. ... Repetition is multiple trials, when replication is when you redo the entire experiment.
Explanation:
Explanation:
If you repeat the steps in an experiment, this gives us a better judgement and a clearer overall conclusion and results. :)
Put the following biological structures in the correct order of organization, from smallest to largest:
A. Gills, pillar cells, lamellae, fish, respiratory system
B. Pillar cells, lamellae, gills, respiratory system, fish
C. Pillar cells, lamellae, gills, respiratory system, cat
D. Lamellae, gills, respiratory system, fish, pillar cells
Answer:
B
Explanation:
Cats Dont have gills so rule out C. The body has to be the end so it would be B starting from Pillar cells to fish
Biological structures are arranged based on the level of the organization. The order of organization from smallest to largest is pillar cells, lamellae, gills, respiratory system, and fish. Thus, option B is correct.
What is the level of organization?
The level of organization is the arrangement of the structures based on the level of complexity. It starts from the most simple to the most complex structures. It starts with an atom and ends in an ecosystem.
Pillar cells are the simplest level that comprises the fundamental unit made of molecules. They together make the tissues or the lamellae in the fish. The tissues or the lamellae group together to make the organ and gills.
The gills combines with the other organs to make the organ system like the respiratory system, which together with various organ system makes the fish the makes a complete organism.
Therefore, the order of the organization starts with pillar cells and ends at fish.
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Please help I have one more attempt. I need help labeling the upper muscles of the arm.
There are four muscles in the upper arm. These muscles are Brachialis, Biceps brachii, triceps brachii, and coracobrachialis.
What is the function of muscles in the upper arm?The upper arm has many muscles which are arranged in different compartments. The muscles in the upper arm are the muscles that connect the scapula with the thorax and are responsible for most of the movement of the scapula. The muscles that link the humerus are responsible for the movement of the arm. The muscles in the arm or the forearm move the arm, wrist, and hand.
The humerus is where the muscles that move your arm are located. The humerus is made up of the following muscles: Tricep, Biceps, Brachial, and Bicepsioradial. The 20-plus muscles that cause the majority of wrist, hand, and finger movement are located along the arm. The labeled image of the arm is attached below.
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If a car company introduces a new model car at a price that most consumers are
unwilling to pay which creates excess supply, what will happen to the price of that car?
Answer:
it's sure that car price will increase
explain how the various specialiesed cells are modified to Cary out to their function 20mark
Compare and contrast the two upper layers of the mantle?
Answer:
Both the lithisphere and asthenosphere are the part of Earth and are made of similar material. Lithosphere is made up of Earth's outermost layer, the crust, and the uppermost portion of the mantle. In comparison, the asthenosphere is the uppermost portion of Earth's mantle. Which is also the middle layer of Earth.
a report conclusion on waste management
What is meant by a neutral symbiotic
relationship?
A. At least one organism is harmed.
B. At least one organism gains.
C. At least one organism is unaffected.
I think answer is option B.
supply the endings of the following ranks:
division,class,order,family
Answer:
I am not sure what you are asking for, but from my understanding I think you are telling me to put it in order
Explanation:
Order, Class, Family, Division
Hope this helps
example of natural system of classifying organisms
Answer:
In natural system of classification of Organisms, homology is brought out through the study of internal and external characters. Homology is the relationship of comparable structures having been derived from a common form.
For example, the fore arm of different land vertebrates has the same pentadactyl constitution.
Explanation:
pls mark brainliest
What is the types of atmosphere
Answer:
From order to closest to farthest:
Troposphere, stratosphere, mesosphere and thermosphere. Exosphere as well, if you wish.
Explanation:
Not much to explain here. They are separated by temperatures.
What is the application of Gene Editing in Primary T Cells?
Creative Biogene CRISPR/Cas9 Platform provides comprehensive gene editing services for various cell lines, especially for primary T cells. With years of experience, our talented scientists have established an efficient assay to edit genome in T cells by CRISPR/Cas9. At CRISPR/Cas9 PlatformCB, we offer a gene knockout service for customer as well as isolation of primary T cell service. Based on our excellent platform, our staff are focusing on supplying the best services and products.
https://www.creative-biogene.com/crispr-cas9/service/gene-editing-in-primary-t-cells.html
Answer:
Creative Biogene CRISPR/Cas9 Platform provides comprehensive gene editing services for various cell lines, especially for primary T cells. With years of experience, our talented scientists have established an efficient assay to edit genome in T cells by CRISPR/Cas9. At CRISPR/Cas9 PlatformCB, we offer a gene knockout service for customer as well as isolation of primary T cell service. Based on our excellent platform, our staff are focusing on supplying the best services and products.
