Answer:
Exposure to a virus is closely related to the development of immunity, since the immune system is responsible for creating antibodies in response to the presence of potentially harmful biological agents, such as these viruses.
Explanation:
Viruses are biological agents that can produce diseases when they enter the body of a living being. In response to contact with a virus, the immune system synthesizes specific antibodies to combat the foreign biological agent.
Antibody immunity can be of two types. It is fast when it is mediated by immunoglobulins M (IgM), which attack the virus anywhere, while the late and prolonged response is due to the development of immunoglobulins G (IgG).
An example of immunity to a virus occurs with the exhibition to the virus of the Dengue, that creates permanent immunity to the viral serotype to which an individual is exposed.
The acquired immunity, mediated by antibodies, is the base for the development of vaccines.
The human eye has three types of cone cells. Damage to any of the three cone cells doesn't cause total blindness because of the
the s cone because the human eye needs the s cone and its most important
PLEASE HELP IN ONE MINUTE
Answer:
3 is my best guess but be warry
Explanation:
Answer:
3
Explanation:
metals are shiny, malleable, and are really good conductors.
Helpp
please dont copy and paste when googling
easy^ points
Answer:
Thalidomide was known as a sedative drug which mothers took during the early stages of pregnancy in order to treat morning sickness. It resulted and caused certain medical effects like congenital malformation which affected the limbs of children.
Explanation:
This is the correct answer.
Thalidomide is a sedative drug which was actually discovered towards the end of the 50s. It was reported that the drug caused tragedy worldwide. In the early 1960s, the drug was withdrawn from use. But it is now being prescribed. Actually, it is used to treat cancers, certain skin conditions, etc.
The bacterial RecA protein (and its counterpart in eukaryotes, Rad51) are involved in, and help direct: ________.
a. chromatin packing and heterochromatin formation
b. Apurinic site repair
c. Post-transcriptional regulation
d. Strand invasion
Answer:
The appropriate alternative is Option b (Apurinic site repair).
Explanation:
Although these antibodies eliminate compromised DNA bases through midriff of N-glycosylic attachments, maintaining perhaps an apurine or perhaps even apyrimidine site today.RecA connects towards DNA damage as well as precipitates recombinant restoration through doulas branch fracture pairing or daughter strand difference restore.Other solutions aren't relevant to the situation in question. So that the answer above is the right one.
As glaciers are receding, what is happening to the crust?
Answer: The enormous weight of this ice caused the surface of the Earth's crust to deform and warp downward, forcing the viscoelastic mantle material to flow away from the loaded region.
Explanation:
Answer:
Its is rising :)
Explanation:
Calculate the amount of energy you would expect to find at the secondary consumer level if there were 100,000 J of energy at the producer level in an ecosystem.
The amount of energy one would expect to find at the secondary consumer level if there were 100,000 J of energy at the producer level in an ecosystem is 1000J.
How to calculate amount of energy available in food chain?The food chain is a feeding relationship between living organisms in an ecosystem. Each organism occupies a position called trophic level.
The trophic levels involved in a food chain are as follows:
ProducerPrimary consumersSecondary consumersTertiary consumerThe producer begins the energy transfer, however, only 10% of the available energy is passed to the next trophic level because 90% of this energy is used for metabolic activities.
This means that if 100,000 J of energy is available at the producer level in an ecosystem, the following applies:
Primary consumers: 10/100 × 100,000 = 10000J of energy Secondary consumers: 10/100 × 10,000 = 1000J of energyTherefore, the amount of energy one would expect to find at the secondary consumer level if there were 100,000 J of energy at the producer level in an ecosystem is 1000J.
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what frog system is the most differnt from the human system
Why are bacterial cells often used as a host for genetic manipulation?
Answer:
Explanation:
because bacteria reproduce and make proteins very quickly , because the plasmids in bacteria also contain nucleotide sequences called restriction sites that can be cut easily by enzyme.
what is the difference between bracketed key and indented key?
Answer:
Bracketed and indented keys are two dichotomous/or branching keys with an ordered, numbered couplet, and spatially differentiated respectively.
Explanation:
Dichotomous keys are used in the identification and classification of taxa.
Bracketed keys, or parallel keys, are easy to understand- for efficiency, these keep the first two entries of every couplet or pair being compared. It also makes use of a numbering system in the couplet choices for easy tracking.
Indented keys maintain an equal distance from the margin on the left of the pages. Successive couplets are indented til the taxon is identified.
What type of biomolecule is used to convert energy to ATP?(1 point)
lipid
carbohydrate
nucleic acid
protein
Answer:
nucleic acid
I hope it is helpful to you
how does cystic fibrosis increase the risk of respiratory infections such as bronchitis and pneumonia?
a.by causing mucus to build up in airways.
b.by destroying cells of the immune system.
c.by reducing blood flow to the lungs.
d.by increasing air flow to the lungs.
Answer:
CFTR controls the flow of water and salt in and out of the body's cells. Changes cause mucus to become thickened and sticky. This first affects the small airways in the lungs. Over time, it can affect all airways.
Explanation:
Brainliest please?
What are nucleic acids used for in the body
help plz
s
d
ss
s
d
s
Answer:
Free point... Thank you dear
What characteristics make a species vulnerable to extinction?
Answer:
Many rare and/or endemic species exhibit one or more of the following attributes which make them especially prone to extinction: (1) narrow (and single) geographical range, (2) only one or a few populations, (3) small population size and little genetic variability, (4) over-exploitation by people
If a eukaryotic cell has 20 chromosomes and it undergoes meiosis, how many cells will result, and how many chromosomes will they contain?
A. 4 diploid cells, each with 20 chromosomes
B. haploid cells, each with 10 chromosomes
C. haploid cells, each with 10 chromosomes
D. diploid cells, each with 20 chromosomes
Answer: 2 haploid cells, 10 chromosomes each.
Explanation: meiosis produces haploid gametes from the parent cell.
During G2 the Wee1 protein phosphorylates tyrosine-15 of the Cdc2 protein kinase, thus inactivating it. Only once dephosphorylation occurs and Cdc2 becomes active carn the cell pass from G2 into M and proceed to cell division. Can you think of a reason why the Wee1 protein was named as such?
Answer:
cells can't fully grow in Wee1 mutants
Explanation:
The G2 phase is a period where cell growth and proteins are synthesized to prepare for cell division. The Wee1 protein is a dosage-dependent inhibitor of mitosis. Moreover, the cyclin-dependent kinase 2 (cdc2) is a protein involved in the regulation of the cell cycle which phosphorylates serine residues in Wee1. However, in Wee1 mutants, Cdc2 is not inactivated (phosphorylated). This change causes cells to enter M phase prematurely, thereby producing "wee" mutant cells.
In man, glucose is present in blood plasma but not in urine. This is because glucose
molecules are
(A) actively transported from the proximal convoluted tubule to blood capillaries
(B) oxidised to supply energy for ultrafiltration
(C) stored in the kidney
(D) too large to enter Bowman's capsule
In man, glucose is present in blood plasma but not in urine. This is because glucose molecules are actively transported from the proximal convoluted tubule to the blood capillaries.
What is glucose?Glucose is a monosaccharide, biomolecule found in ingested food which is used to provide energy to the cells of the body. Glucose is usually found only in the blood, since it is reabsorbed in the renal tubules, but when there are pathologies in which glucose levels in the blood are increased, the sites that reabsorb glucose become saturated, thus having an escape of glucose in urine.
Therefore, we can confirm that in man, glucose is present in blood plasma but not in urine. This is because glucose molecules are actively transported from the proximal convoluted tubule to the blood capillaries.
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(GIVING BRAINLIEST AND EXTRA POINTS!!)
Nathan mixed salt and pepper in a dish. He held a charged balloon over the mixture and noticed it only attracted the pepper. Why did the charged balloon only attract the pepper?
A) The salt was oppositely charged.
B) The salt was uncharged.
C) The pepper was uncharged.
D) The pepper was charged.
Answer:
B
Explanation:
Answer:
the pepper was uncharged
Explanation:
Which factor is present in higher amounts in winds that come from oceans than winds that come from land?
air pressure
cool air
warm air
water vapor
Intro
The factor that is present in higher amounts in winds that come from oceans than winds that come from land is the water vapor that is in the fourth option, as the water vapor is present in higher concentrations where there is high humidity.
What is the significance of the different kinds of winds?There are various types of winds, such as those that contain a high amount of water vapor while others contain a low amount. like that there are different types of winds such as sea and land breezes, monsoons, and prevailing winds, and all these wind patterns have an impact on human activities such as farming and agriculture.
Hence, the factor that is present in higher amounts in winds that come from oceans than winds that come from land is the water vapor that is in the fourth option, as the water vapor is present in higher concentrations where there is high humidity.
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Answer:
Water Vapor
Explanation:
Just did it on edg
Please help :) What are some tasks that organelles perform inside of a cell?
Answer: These organelles work together to perform various cellular jobs, including the task of producing, packaging, and exporting certain cellular products. The organelles of the endomembrane system include the endoplasmic reticulum, Golgi apparatus, and vesicles.
Explanation:
I hope this helps
GIVING BRAINLIEST AND EXYRTA POITNS PLZZZ HELP ASAP
Answer: 1st class lever
Explanation:
Answer:1st
Explanation:
What are the 3 main products from the lights reactions of photosynthesis?
a.NADPH, ATP, CO2
b. ATP, O2, H2O
c.NADPH, O2, H2O
d. ATP, NADPH, O2
For a transverse wave, the _________ depends on the distance from the rest position to a crest or trough. *
Answer:
[tex]\huge\boxed{\sf Amplitude}[/tex]
Explanation:
❀❀❀ For a transverse wave, the Amplitude depends on the distance from the rest position to a crest or trough. Amplitude = "distance moved by a point on a vibrating body or wave measured from its equilibrium position." Below are some pictures that might be able help you!... (pictures attached) ❀❀❀
Stay Safe! ッHope This Helps! (◠ω◠✿)
Considering the drifting of continents, how do you explain the abundance of marsupials and the absence of native placental mammals in Australia
Answer:
this phenomenon is a natural consequence of evolutionary processes and continental drift
Explanation:
Marsupials are mammals in which newborn offspring are carried in a pouch of the female (mother) body. On the other hand, placentals are mammals that complete embryo development in the mother's body, in the placenta. All the extant marsupials are endemic to Australia and the Americas. It has been shown that marsupials diverged (evolved) in South America, Australia and Antarctica when these landmasses were joined. In Australia, marsupials evolved to fit an ecological niche, which can be attributed to geographic isolation due to continental drift, while placental mammals are relatively recent and more scarce (mainly bats and rodents) within this region.
What is your definition of the word biochemistry?
Answer:
Biochemistry is the branch of science that explores the chemical processes within and related to living organisms. It is a laboratory based science that brings together biology and chemistry. By using chemical knowledge and techniques, biochemists can understand and solve biological problems.
how is the DNA in your skin cells related to the DNA in your heart, liver, and lung cells?
Answer:
With few exceptions, all cells in a person’s body have the same DNA and genes. As cells divide and grow different genes are expressed, resulting in different cell types. As cells divide and grow different genes are expressed, resulting in different cell types.
Explanation:
A prairie:
A .is always hot
B. is covered with grass
C. never gets rain
D. has dense forests
The enzyme present in saliva
Answer:
Amylase
Explanation:
Saliva contains special enzymes that help digest the starches in your food. An enzyme called amylase breaks down starches (complex carbohydrates) into sugars, which your body can more easily absorb. Saliva also contains an enzyme called lingual lipase, which breaks down fats.
When do land breezes develop? Which way does wind move during a land breeze?
Answer:
A low-pressure zone forms above the land surface from the rapid loss of heat. A high-pressure zone forms as the cooler land cools the air immediately above the surface. Winds aloft flow from the ocean to the land. Winds at the surface flow from high to low pressure, creating a land breeze
Explanation:
Explain why it makes sense to use the word translation to describe protein synthesis and why it would not make sense to use the word translation to describe mRNA synthesis?
Answer:
The application of the word translation makes sense at the time of describing the synthesis of protein as the language of nucleic acids is transformed into the language of polypeptides by the phenomenon of translation. On the other hand, it will not be suitable to describe the synthesis of mRNA using the word translation as the nature of the biomolecule stays similar because both the DNA and the product of DNA, that is, mRNA are nucleic acids.