Answer:
The primary function of the lymphatic system is defending the body against both external and internal threats.
Explanation:
The set of tissues and organs that participate in the immune response is known as the lymphatic system. Its main functions are to maintain the volume of blood and participate in the defense of the organism. It is made up of organs, vessels, nodes and lymphatic tissue. This system fulfills three basic functions: Defense: in the lymph nodes, the lymphocytes reproduce to respond to antigens; fat absorption: most of the fats are absorbed by the lymphatic system and subsequently transported to the blood and capillary exchange: it recovers substances that the blood flow has lost in the capillary exchange.
The principal function of the lymphatic system is to remove strange or damaging substances from tissues and eliminate them. The correct option is defending the body against both external and internal threats.
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Among other functions of the lymphatic system, its principal one is the removal of damaged cells, cancer cells, and protection of the body against the virus, bacteria, and fungi that might affect it.
The lymphatic system remove these elements from the tissues for their elimination.
All these strange microorganisms and waste substances get filtrated in the lymphatic ganglia.
Ganglia are small organs located all along with the net of lymphatic vessels, that function as lymph accumulation centers.
Lymph passes through these organs and gets filtrated and purified of waste substances.
Inside each ganglion, the lymphocytes T and lymphocytes B help the organism to fight these infections.
B cells produce antibodies that impede infection propagation by trapping the microorganisms and destroying them.
Most lymphatic ganglia are grouped near the neck, underarm, and groin.
They are also grouped in the chest, abdomen, and pelvis, where they filter blood.
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trong chương trình lớp 7 các em đã học các ngành động vật nào?
Answer:
what's this can u explain me in hindi pls
Does genes contain sextual attractions over humans?
Answer:
Yes, genes are based on your look likes / features for example hair, eyes, other parts of the body and people are more connected to them for the circumstances of attractions
Hope this helps :)
Explanation:
What effect does insulin have on the body? It raises blood-sugar levels. It lowers blood-sugar levels. It raises glucagon levels. It lowers glucagon levels.
it regulates blood sugar level.
Explanation:
Insulin helps control blood glucose ( sugar) levels by signaling the liver and muscle and fat cells to take in glucose ( sugar) from the blood. Insulin therefore helps cells to take in glucose (sugar) to be used for energy. If the body has sufficient energy, insulin signals the liver to take up glucose ( sugar) and store it as glycogen.
The Peppered moth is white with black spots, which helps it blend in with the bark on beech trees. The burning of coal in Great Britain caused many beech trees to become black with soot. Over time, the Peppered moth became all black in order to blend in with the new bark color. What type of example is this? homeostasis metabolism organization adaptation
Answer:
adaptation
Explanation:
Adaptation in Biology refers to the process whereby an organism adjust to its natural environment in order to increase its chance of survival or in other words, the organism becomes better suited to its natural habitat by possession of some adaptive features.
In this example, a white peppered moth with black spots initially possess these color combination in order to blend to its natural environment, which is the bark on beech trees. However, due to the burning of coal in Great Britain which caused many of the beech trees to be black, the peppered moths had to ADAPT to this change in environmental color by becoming all black in order to blend in with the new bark color.
Therefore, this is an example of ADAPTATION.
Answer:
adaptation
Explanation:
Raman’s teacher taught about changes that take place during Adolescence
period in the class today. Which of the following change take place in girls
during Adolescence period?
a) Increase in breast size b) Menstruation
c) Growth of hair in genital area d) All of the above
Answer:
d) All of the above
Explanation:
Adolescence is the period which is following the onset of puberty in a young person and turns them into an adult.
During adolescence, both males and females undergo several physical changes. Some of the physical changes in the girls' or female's body include increase in breast size, menstruation, and growth of genital hair.
Hence, the correct answer is "d".
1. Define the term lichen.
2. State and explain the organisms that compose a Lichen.
3. Explain how Lichens are used to establish a community or an ecosystem.
Answer:
Lichens are bizarre organisms and no two are alike. Lichens are a complex life form that is a symbiotic partnership of two separate organisms, a fungus and an alga. The dominant partner is the fungus, which gives the lichen the majority of its characteristics, from its thallus shape to its fruiting bodies.
Explanation:
Hope it helps
What is the weight of pure composed atmos element combined in definite proportion
Answer:
2.9 : 4.35 = 2:3
Explanation:
the law of definite or constant or fixed proportions more compounds, then the weight of 1 element that combines with fixed ratio of M and O atoms in oxide B=2.9 : 4.35 = 2:3
what kingdom are protists in
Answer:
Kingdom protista
Explanation:
See the image below!
Answer:
it is cytosine part of deoxyribonucleic acid
q.no. 5 answer me please please please please please please please please please please please
Answer:
(a)The strength of natural fibers is very less as compared to synthetic fibers. Natural fibers are heavy in weight. Natural fibers can be damaged by moths and other insects. These fibers are not wrinkle-free. These fibers are not long lasting and hence not durable.
(b) Cellulose is termed as polymer because it is made up of many monomer units.
(c) Rayon is first man- made fibre it is known as artificial silk because it have properties that are similar to silk.
(d) Rayon possesses many properties of natural fibers since it is a semi-synthetic fiber. Nylon is a synthetic fiber and has properties that are completely different from natural fibers. The key difference between rayon and nylon is their resistance to wrinkles and tears.
(e) Nylon has since become a popular choice, as it has excellent wind resistance, good elasticity, mildew resistance, and is comparatively cheaper. The material is also lightweight and dries quickly.
(f) When the piece of cotton is burnt then it burns completely and produces no odour or smell. When nylon is burnt, It completely burns and produces burning paper like odour. When nylon is burnt then the nylon is completely shrink and starts to melt first and then produces odour during the time of burning
Describe and explain how temperature and light intensity affect the rate of photosynthesis?
Answer:
The rate of photosynthesis varies with light intensity and temperature.
Explanation:
The rate of photosynthesis varies with light intensity.it decreases as light intensity decreases and increase s as light intensity increases. However at much higher light intensity rate of photosynthesis becomes constant.
The rate of photosynthesis decreases with decrease in temperature.It increases as temperature is increased over a limit. But if light intensity is low increase of temperature has little influence on rate of photosynthesis.
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Answer:
can you click a photo again
A mutation occurred in the following DNA sequence AGCCTAGCC and the mutated form is now AGCCTTAGCC. Which of the following correctly describes the result of this mutation?
1.A deletion occurred so all of the amino acids added after the mutation may be wrong.
2.An insertion occurred so all of the amino acids added after the mutation may be wrong.
3.A substitution occurred so all of the amino acids added after the mutation will definitely be wrong.
4.An insertion occurred so all of the amino acids added after the mutation definitely will be different.
Answer:
Explanation:
1.A deletion mutation occurs when a wrinkle forms on the DNA template strand and subsequently causes a nucleotide to be omitted from the replicated strand.
2.This type of variant results in a shortened protein that may function improperly, be nonfunctional, or get broken down. An insertion changes the DNA sequence by adding one or more nucleotides to the gene.
3. A substitution mutation can cause the following: Change in the coding of amino acids codon to a particular stop codon resulting in an incomplete protein, which is usually non-functional. Can cause Silent mutations where a codon change can encode the same amino acid resulting in no changes in the protein synthesized.
4. when a premature nonsense or stop codon is introduced in the DNA sequence. When the mutated sequence is translated into a protein, the resulting protein is incomplete and shorter than normal. Consequently, most nonsense mutations result in nonfunctional proteins.
albinism is an inherited condition in which pigment does not develop in the skin, hair, and eyes.
the allele for albinism is recessive.
what are the chances of albino parents having an albino child?
a) 0% b) 25% c) 75% d) 100%
Answer:
25%
Explanation:
i'm sure its 25% chance of albino parents having albino child
why is the linner wall of alimantary canal not digisteg although the digestive enzymes can digest all the materials that make cell?
Answer:
There are no options to this question but it can be answered by giving a general explanation. The answer is:
Because the digestive enzymes are not in direct contact with the cells that make up the walls of the alimentary canal. The walls are protected by mucuous lining.
Explanation:
Digestion of our ingested food is an important process for the effective functioning of our body system. Digestion is the process whereby food, which are usually macromolecules, are broken down into simpler molecules usable by the body. After food is taken in from the mouth (ingestion), it must be broken down by chemical and mechanical means.
The chemicals means is through digestive enzymes, which are proteinous chemical substances. The digestive system consists of the alimentary canal or digestive tract, which is a tube-like organ that forms the path for food passage. Since digestive enzymes secreted during digestion can disintegrate every macro biomolecule e.g protein, carbohydrate etc, it can also break down the molecules that make up the cells of the tract wall.
However, the digestive enzymes does not break down the cells of the canal's wall because the body system secretes mucus, which lubricates the passage of food along the canal. It also prevents the digestive enzymes from coming in contact and acting on the macromolecules that make up the cells of the walls of the alimentary canal.
An area that used to be wet and rainy has now become a dry desert over time.
Which plant adaptations would be most favorable in the new environment?
Select one:
Large, widespread root systems.
Weak, thin stems.
Broad, flat leaves.
Big, colorful flowers.
Answer:
c
Explanation:
edmentum
Complete urinary obstruction causes which of the following? (Select all that apply.) Increased urinary stasis Increased urinary frequency Decreased hydrostatic pressure Decreased glomerular filtration Increased predisposition to infection
Answer:
hydrostatic pressure increaes and decreased in glomerula filtration and increase in urinary stasis
Explanation:
genesis high grade heat and pressure is steps in what
Answer:
Metamorphic rock.
Explanation:
This is the answer I hope this help you out. Enjoy your day!
What is the function of the Xylem in a leaf?
Fatty acids are the building blocks of(1 point)
monosaccharides
amino acids
DNA
lipids
Fatty acids are the building blocks of lipids
WHAT ARE LIPIDS?
Lipids are one of the four major biological molecules in nature (the other three are proteins, carbohydrates and nucleic acids). Lipids are organic compounds that are generally characterized by their insolubility in water.MONOMERS OF LIPIDS:
Lipids, like every other biological molecule, are polymeric compounds i.e. they are made up of smaller monomeric units. The monomers that make up lipids are called FATTY ACIDS.Therefore, fatty acids are the building blocks of lipids.
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Visitors to Canada are asked to declare if
they are bringing living organisms (plants,
seeds, fruits, nuts, live animals, etc.) into
the country. Explain why it is important
to declare these organisms, even if the
visitor thinks the organism is harmless.
Which statement describes the genes within DNA?
Resources have an ethical value if A. They are used to produce goods. B. We have a right to take advantage of them. C. They are particularly beautiful. D. We have a duty to protect them.
Answer:
D.Explanation:
Ethical values mean that a resource is important to conserve, protect, and use responsibly.
I'm always happy to help :)The lac operon in Escherichia coli Group of answer choices promotes the expression of lactose-utilizing enzymes when lactose is absent from the environment. prevents lactose-utilizing enzymes from being expressed when lactose is absent from the environment. prevents lactose intolerance. prevents lactose-utilizing enzymes from being expressed when lactose is present in the environment.
Answer:
The correct answer is - prevents lactose-utilizing enzymes from being expressed when lactose is absent from the environment.
Explanation:
The lac operon or the lactose operon is a operon that is essential for the many bacteria like Escherichia coli for metabolism and transport of the lactose.
In the presence of the lactose in the environment of the cell the lac genes are expressed due to the isomer of of lactose called allolactose binds to the Lac repressor protein and do not allow to bind it to lac operator. But in the absence of the lactose, the lactose utilizing enzymes are not expressed due to repressor bind to the lac operator and prevents the binding of RNA polymerase to the promoter.
Write the changes occurring in the passage through the alimentary canal as a person has ingested roti and dal as a part of his meal
Answer:
A person had roti and dal for his lunch. Trace the changes in those during its passage through the alimentary canal. Answer: ... The saliva contains an enzyme salivary amylase (ptyalin) which converts starch in roti into maltose, isomaltose and small dextrins called a-dextrin.
Explanation:
what is the difference between animal and plant tissues
Answer:
1) Plant tissue has a stationary phase.
2) They do not necessitate a large amount of energy
3) They have more dead cells because mechanical energy is produced.
4) They are capable of preparing their own meals
5) They are divided into two categories: meristematic and permanent tissue.
Tissue from animals:
1) They're at the locamative stage.
2) They need a significant amount of energy
3) They have a higher number of live cells.
4) They are unable to produce their own food and must rely on other organisms.
5) They are classified into four types: epithelial, connective, muscular, and nervous tissue.
Explain the statement-“viruses are the link between living and non-living”.
Answer:
this is because they appear dead outside and alive inside beings
define environmental science
Answer:
Environmental science is the study of living organisms and how they interact with our environment. It covers a broad range of disciplines including engineering, information studies and research of environmental issues.
Hope this helps <3 Comment if you want more thanks and be sure to give brainliest (4 left) <3
Answer:
It is interdisciplinary academic that draws on ecology, geology, meteorology, biology, chemistry, engineering and physics to study environmental problems and human impacts on the environment
Dr. Ignaz Semmelweis was a Hungarian doctor investigating the deaths of women in his
maternity ward from childbed fever. Which statement below is a valid hypothesis made by
Dr. Semmelweis?
O Doctors caused childbed fever.
Midwives caused childbed fever.
If doctors disinfect hands before delivering babies, then there will be less childbed fever.
o If a woman goes into the hospital then she will die of childbed lever.
The investigation for death of women in maternity ward is identified by scientific method of hypothesis testing.
The null hypothesis statements and alternative hypothesis statement can be as,
H0 : Doctors caused child bed fever.
Ha : Midwives caused child bed fever.
Child bed fever is the infection in some part of female reproductive organs usually ovary which causes the abortion of a child or premature child birth.
The hypothesis to check Dr.Ignaz have to make a null hypothesis statement against which there will be alternative hypothesis statement which will cause the observation and then reaching a conclusion.
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TREE TRUNKS STRUCTURE
Sapood
Heartwood
Dead bank
Ure bark
Cambium-
Pith
Growth rings
Medullary rays
4. In tree rings, like those shown, each "ring" of growth represents what?
O A. One year of growth
O B. One season of growth
O C. One month of growth
O D. Two years of growth
What’s the answer ?
Answer:
One year of growth
Explanation:
Tree rings, like those shown, each "ring" of growth represents one year of growth.
Hope this helps, and have a good day :)