Answer:The immune system responds to antigens by producing cells that directly attack the pathogen, or by producing special proteins called antibodies. Antibodies attach to an antigen and attract cells that will engulf and destroy the pathogen.
Explanation:
Antibiotics are released by B cells to destroy the pathogen. The correct option is A.
What are antibodies?Proteins called antibodies defend you when your body comes into contact with an unwelcome chemical.
Antibodies, which are made by your immune system, bind to these foreign chemicals and drive them out of your body. Immunoglobulin is another name for an antibody.
Proteins called antibodies are created by the immune system in response to infection.
They play a crucial role in the body's defense mechanism because they work to eliminate pathogenic organisms and prevent them from invading human cells.
In response to antigens, the immune system either produces cells that go after the pathogen directly or produces specialized proteins known as antibodies.
Antibodies draw cells that will engulf and eliminate the infection by binding to an antigen. B cells and T cells, two types of lymphocytes, are the immune system's primary cells.
Thus, the correct option is A.
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What is the purpose using lime water in release of carbon dioxide experiment
Limewater can be used to detect carbon dioxide. If carbon dioxide is bubbled through limewater then it turns from clear to cloudy/milky in color. This is why limewater used in a simple respirometer can show that more carbon dioxide is present in exhaled air compared to inhaled air.
The sympathetic axons extend to which blood vessels of the kidney?.
Answer:
The hilus is the point of entry and exit of the renal arteries and veins, lymphatic vessels, nerves, and the enlarged upper extension of the ureters.
Which of the following best describes prokaryotes and eukaryotes?
Answer:
Prokaryotes - smaller, usually bacteria, unicellular, NO membranes
Eukaryotes - HAS membranes, complex organelles, plant/animal cells
Explanation:
Hope this helps!
Eukaryotes has been known as the creatures which are made up of the cells with membrane-bound organelles and the nucleus that contains DNA in the manner of chromosomes. Thus, option B is correct.
What are eukaryotes and prokaryotes?Prokaryotes and eukaryotes are the two classes into which all living things may be divided based on the basic makeup of their cells. Prokaryotes - smaller, usually bacteria, unicellular, NO membranes and Eukaryotes has the membranes, and the complex organelles, plant or animal cells.
Prokaryotes are the creatures that consisting of the cells that don't have the cell nuclei or any organelles that are enclosed in the membranes. It follows that prokaryotes' DNA is not contained within a nucleus.
Eukaryotic organisms can have several cells or only one cell. Eukaryotes make up all animal life. Protists, fungi, and plants are examples of additional eukaryotes.
Therefore, Prokaryotes do not have a nucleus, eukaryotes have a nucleus.
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The complete question will be
Which of the following best describes prokaryotes and eukaryotes?
O Prokaryotes have a nucleus and eukaryotes do not.
O Prokaryotes do not have a nucleus, eukaryotes have a nucleus.
Both have membrane-bound structures
Prokaryotes have membrane-bound structures and eukaryotes have free floating organelles
True or false only numbers can be entered in cell
Answer:
I Believe it is True
what does water do for the plant during germination
Answer:
Water is required for germination. Mature seeds are often extremely dry and need to take in significant amounts of...
Oxygen is required by the germinating seed for metabolism. Oxygen is used in aerobic respiration, the main source of the...
Temperature affects cellular metabolic and growth rates. Seeds from different species and even seeds from the same plant.
Explanation:
In general, excess amounts of water-soluble vitamins are excreted via the.
In general, excess amounts of water-soluble vitamins are excreted via the urine.
Water-soluble vitamins are generally excreted through the urine. Water-soluble vitamins can easily combine with the urine and be excreted out of the body. Hence, they need to be taken on a regular basis.
What are vitamins?
Vitamins are necessary for the body as they play an important role in enzyme activity. Fat-soluble vitamins, such as vitamins A, D, E, and K, are present, and water-soluble vitamins, such as the vitamin B complex and vitamin C, are also present. Fat-soluble vitamins can be stored in body fat and used, but water-soluble vitamins can be lost through urine.
Water-soluble vitamins can be gotten from fruits such as oranges, etc. To avoid vitamin deficiency, they should be taken on a regular basis as they are lost. Vitamin C is important for collagen function. Fat-soluble vitamins can be gotten from plants and animals.
Hence, water-soluble vitamins are generally excreted through the urine as they can't be stored in the body.
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How would the structure and functions of body parts for movement differ between a grassland antelope and a pond duck?
The antelope and duck have two very different movement mechanics.
The antelope moves by running across the grasslands, and the duck moves by swimming in the pond or walking on the ground.
The antelope and duck have two very different movement mechanics. The antelope moves by running across the grasslands, and the duck moves by swimming in the pond or walking on the ground.
What is Ecological interactions ?Ecological interactions are the partnerships in between the species in which the organism benefits while the other does not. All the creatures in an environment has been linked in some manner. Originally, populations of the various species interact in the complicated web of the interactions.
The relationships between the species in communities are the crucial in natural selection because they would influence the evolution of the interacting species.
These particular interactions would have the positive, negative, as well as the neutral impact on the capacity of either species to live the life and to perform the process of reproduction, or the "fitness."
Therefore, The antelope moves by running across the grasslands, and the duck moves by swimming in the pond or walking on the ground.
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The deciphering of the genetic code was made possible by which two advancements in technology?.
The two advancements in technology that made the deciphering of the genetic code possible are given below:
The capability to form proteins from RNA in cell-free systems. The capability to form RNA molecules with a specified sequence. What do you mean by Genetic code?Genetic code may be defined as the arrangement of nucleotides in deoxyribonucleic acid (DNA) and ribonucleic acid (RNA) that distinguishes the amino acid sequence of proteins.
Proteins are synthesized by RNA molecules by the process of translation in the cytoplasm of the cell. On the other hand, RNA molecules get synthesized by the process of transcription in the nucleus of the cell itself.
Therefore, it is well described.
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3. Did trilobites and dinosaurs live at the same time?
Explanation:
No! After the dinosaurs died out, nearly 65 million years passed before people appeared on Earth.
Which of the following is a nonrenewable resource? a. hydropower b. biomass c. geothermal power d. coal please select the best answer from the choices provided a b c d
Answer:
Coal
Explanation:
Coal is classified as a nonrenewable energy source because it takes millions of years to form.
What are the negative sides of Embryonic stem cells
This autosomal dominant condition can cause the aorta to have a weakness in it that may cause it to burst without warning, and the individual has long limbs and fingers. It is called
Marfan syndrome of is a multisystem disorder that is the result of impaired fibrillin synthesis, fibrillin is usually found in abundance in the connective tissue of the aorta.
What is Marfan syndrome?It is related to connective tissue disorders that at the cardiac level, it can cause stretching or weakening of the aorta.
Its inheritance pattern is autosomal dominant, although it originates from spontaneous mutations, in up to 25% of cases.
Therefore, we can conclude that Marfan syndrome of is a multisystem disorder that is the result of impaired fibrillin synthesis, fibrillin is usually found in abundance in the connective tissue of the aorta.
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1. Identify the different types of mediated and online communication channels. Discuss the advantages and disadvantages of each.
Mediated communication channels include telephone, letters, audio/video cassettes, radio, televisions, etc. while online communication channels websites, social media, E-mail, etc.
What do you mean by Mediated communication?Mediated communication may be defined as any circumstances where a technological medium is presented in face-to-face interaction.
Advantages of Mediated communication channels:
People can swap, store, edit, broadcast, and copy any written documents.Information can pass out to maximum people in a very short period of time. It requires less maintenance and cost.Disadvantages of Mediated communication channels:
It lacks true human contact.Sometimes false or fraudulent pieces of information spread that cause severe harm to people and their psychology. There may be an absence of any regulation or prevention of mishappening.Advantages of Online communication channels:
Cost-effective and supporting during unfavorable times. It promotes globalization.It has long-term productivity and efficiency.Disadvantages of Online communication channels:
It steals your privacy. It lacks a sense of humor, therefore, there's a big risk of misunderstanding.It lacks physical contact which must be more effective in any means.Therefore, it is well described above.
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(06.03 MC)
Sickle cell anemia is known to run in a family. A pedigree chart for this family is shown below.
Parents
Offspring
What percentage of the offspring
are carriers of the disease but do not have it?
00%
O 25%
O 50%
© 100%
Based on the pedigree, the percentage of offspring who are carriers of sickle cell anemia is 50%.
What is sickle cell anemia?Sickle cell anemia is a disease of the red blood cells in which mutations in the haemoglobin results in inability of the red blood cells to carry oxygen efficiently to the cells.
Based on the pedigree chart, the carriers of sickle cell are those that are half shaded black.
Two out of four of the offspring are shaded this way.
Percentage = 2/4 × 100% = 50%.
Therefore, the percentage of offspring who are carriers is 50%.
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When you ice skate, the heat generated by the blade of the skate rubbing against the ice causes some of the ice right under the blade to melt. This water acts like a lubricant under the skate that allows the skate to slide.What causes the ice to melt under the blade?
a tools construction and determine it’s longevity and cost
Answer:
True
Explanation:
If it was poorly made it wouldn't last that long.
(This is the answer if it was a true or false)
The mollusk's mouth may contain a protrusible, tonguelike organ that has many teeth and is used for feeding. This unique organ is called the
The mollusk's mouth may contain a protrusible, tonguelike organ that has many teeth and is used for feeding. This unique organ is called the radula.
What do you mean by Mollusks?Mollusks may be defined as a large phylum of invertebrate animals with a soft unsegmented body usually surrounded by a calcareous shell.
The radula is an anatomical structure operated by mollusks for feeding. It is a chitinous ribbon and a minutely toothed structure.
Therefore, the mollusk's mouth may contain a protrusible, tonguelike organ that has many teeth and is used for feeding. This unique organ is called the radula.
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pls help
The local police have provided you with some missing persons reports. Look at the information for each missing person and compare it to your findings. Could the bones belong to any of these missing persons? If so, which ones, and why? Keep in mind that 1 inch = 2.54 cm. (2-3 sentences)
John Green
Age: 22
Height: 5 ft. 11 in.
: Male
Features: Recent break in left radius
Tiffany Brown
Age: 29
Height: 5 ft. 3 in.
: Female
Features: None
Linda White
Age: 71
Height: 5 ft. 6 in.
: Female
Features: Osteoarthritis in joints
Bob Black
Age: 31
Height: 6 ft. 2 in.
: Male
Features: None
Anna runs 5 km in 20 minutes. What is her speed in kilometers per hour?
Answer:
15 km/h
Explanation:
5 km in 20 min
5km is 5000m and 20 min is 20×60 =1200s
5000÷1200= 25÷6 m/s
To convert m/s to km/h we multiple by 18/5
25÷6×18÷5
15 km/h.
Please give me brainliest. :-)
how does a snake shoot its venom?
Answer:
They spray the venom by squeezing their muscles on the venom glands, forcing the venom out of front openings in the fangs. When cornered, some can "spit" their venom up to a distance of 6.5 feet (2 meters).
Explanation:
Describe what corn, dogs, and genes have in common
Which of these glands produce a hormone that maintains the balance of calcium and phosphorus in the blood?.
Answer:
It is called Parathyroid hormone
Parathyroid hormone, also called parathormone or parathyrin, is a peptide hormone secreted by the parathyroid glands that regulates the serum calcium concentration through its effects on bone, kidney, and intestine.
Sand dunes along the coast are formed of bare sand. Eventually, grasses take root on the dunes. Over
time, larger plants such as shrubs and trees are able to grow at the edge of the sand dune ecosystem.
This gradual change in plant communities of a sand dune ecosystem can result in -
A- reduced symbiotic relationship between producers and bacteria
B- reduced energy absorption by consumers
C- greater erosion rates
D- greater species diversity
The gradual change in plant communities of a sand dune ecosystem is an example of ecological succesion and can result in greater species diversity.
What is ecological succession?Ecological succession refers to the gradual changes that occurs in a habitat such that with time new species replace previous species or new species take over an envrionment that had no living organisms initially until a stable community of organisms is established.
There are two types of ecological succession;
primary succession secondary successionSuccession results in greater species diversity.
An example of succession is when species of organisms begin to live one previously care area such as in sand dunes.
Therefore, the gradual change in plant communities of a sand dune ecosystem can result in greater species diversity.
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describe the damage which you can see and effects of the damage on crops by insects pest .
Electricity can be transformed into heat , light , sound energy as well as energy in motion . Which energy transformation is most likely seen in the picture below
The energy transformation which is most likely seen in the picture is chemical to electrical to light energy.
What do you mean by Energy Transformation?Energy transformation may be defined as the process that converts energy from one type into another the other.
In this picture, a battery or a cell lights a bulb, first energy transformation takes place in the battery, and then in the bulb. Battery undergoes energy transformation from chemical to electrical, then bulb converts electrical into the light.
Therefore, the energy transformation which is most likely seen in the picture is chemical to electrical to light energy.
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PLEASE HELP!
Modeling Organ System Interactions:
Create a model.
a) On your poster, create a model that shows the circulatory and respiratory systems.
i. Keep in mind that the poster should show how the systems interact with each other
for the purpose of gas exchange (i.e., delivering oxygen to the body’s tissues and
removing carbon dioxide). This may influence how you choose to design your poster.
b) Label the main structures in each system that are involved in gas exchange.
i. Use one color to label the structures of the circulatory system and another color to
label the structures of the respiratory system.
c) Consider how the circulatory and respiratory systems work together to promote gas
exchange.
i. Use arrows to demonstrate the flow of oxygen-rich and oxygen-poor blood through
This is physical work isn't it .So I guess you need to do it physically?
Blood glucose begin to increase after a meal. As a result, glucagon levels must _________ while insulin levels must ________ in order to maintain metabolic homeostasis.
If glucose begin to increase after a meal, glucagon levels must decrease while insulin levels must increase in order to maintain metabolic homeostasis.
What is homeostasis?Homeostasis is the process by which a stable internal environment is maintained irrespective of the changes in external conditions.
The regulation of sugar level in the blood is one of the homeostatic responses. Insulin and glucagon are two hormones used to perform this task of blood sugar regulation.
Insulin is an hormone that reduces blood sugar level by stimulating the conversion of excess sugar to glycogen.Glucagon, on the other hand, increases blood sugar by converting glycogen back to sugar.Therefore, if glucose begin to increase after a meal, glucagon levels must decrease while insulin levels must increase in order to maintain metabolic homeostasis.
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Hunter-gatherer societies traditionally occupied the same territories year-round in order to care for their livestock. please select the best answer from the choices provided t f
Answer:
this is false
Explanation:
hunter gatherer peoples were most often nomadic to follow the wild animals as they moved.
Answer:
False
Explanation:
edge
True or false plant cells use cellular respiration to get chemical energy from food. IXL LAST QUESTION HELP NOW
Answer: In mitochondria, through the process of cellular respiration breaks down sugar into energy that plant cells can use to live.
Explanation: true
_____ are chemical mechanisms that start a reaction.
Centrioles
Vacuoles
Activators
Inhibitors
Activators are chemical mechanisms that start a reaction.