The false statement about the clonal selection theory of immune system function is statement A, “antigens are recognized by receptor proteins inside the lymphocyte.” This statement is false because antigens are actually recognized by receptor proteins on the surface of the lymphocyte.
The clonal selection theory of immune system function states that when antigens enter the body, they are recognized by receptor proteins on the surface of the lymphocyte. This triggers the activation of the lymphocyte, which will then make many copies of itself in response to the infection. The cloned cells will persist in the body even after the pathogen has been eliminated. Each lymphocyte has the ability to recognize one antigen.
The clonal selection theory of immune system function is the basis for the human body’s ability to respond and protect itself from disease. It is a complex process that allows the body to recognize, fight, and remove foreign invaders, therefore protecting us from harmful bacteria and viruses.
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what makes lipids/fats hydrophobic?
Answer:
Lipids are hydrophobic because they do not mix with water. Lipids are made of long chains of carbon and hydrogen. ... The partial charges on the water molecule cannot interact with the neutral lipid molecule and thus water and lipids do not mix.
Answer:
"this hydrophobic ("water fearing") nature of lipids is driven by the bonds between these many carbons and hydrogens. ... Thus, long chains of carbon-hydrogens bonds form a nonpolar molecule."
The division of culture known as_tends to be fluid and changes quickly over time.
A counterculture
B. subculture
C. dominant culture
D. popular culture
Answer:
D) popular culture
Explanation:
Answer:
D... edge 2021
Explanation:
Determining the order of events and the relative age of rocks by examining the position of rocks in a sequence is called____
A;bsolute dating
B:radiometric dating
C relative dating
D carbon dating
Which type of macromolecules helps a cell brake down food? Lipids proteins carbonhydrates or nucliec acids
Answer:
Proteins
Explanation:
There are four major biomolecules found in living system namely; proteins, carbohydrates, lipids and nucleic acids. These biomolecules serve different and unique functions in the body. PROTEIN is a biomolecule that helps in the break down of food substances in the body as stated in this question.
Specifically, these function of breaking down food substances is carried out by ENZYMES, which are biological catalysts that are proteinous in nature i.e. structurally made of proteins. For example, amylase enzyme breaks down starch, lipases break down lipids. Hence, since enzymes that perform this disintegration function are PROTEINOUS, then PROTEINS are the biomolecules that perform the role.
what is the total amount of carbon added to the atmosphere from soil and the burning of fossil fuel
Answer:
When people use fossil fuels to power industries, power plants, automobiles, and trucks, the majority of the carbon is released into the atmosphere as CO2. The combustion of fossil fuels releases 5.5 billion tons of carbon per year. 3.3 billion tons of this huge quantity remains in the atmosphere.
OAmalOHopeO
PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!
Answer: d
Explanation:
They are compe for the same prey which means this is a survival competition
i will give brainlyest
Answer:
Person above me is right I think. :D no promises
Explanation:
please hurryyyyy!!!!!
These traits are found on chromosome #23 and specifically on the X chromosome
a. sex influenced traits
b. linked traits
c. sex linked traits
d. multiple alleles
Answer:
C. Sex linked traits.
Explanation:
It explains more on https://www.sciencedirect.com/topics/neuroscience/x-chromosome.
Instructions: Use the data table that shows the estimation of the daily resting energy expenditure (REE) to
explore how calorie requirements change as a person gets older. Follow the steps to calculate the REE for a
person over time. Record your calculations in the table,
1. Decide to calculate the REE for a male or female,
2. Choose an adult weight.
3. Calculate the REE for the adult from age 18-29. 30-60, and over 60. Assume the adult maintains the same
body weight at each age.
(Score for Question 1:of 1 point)
1. Male or female
Answer:
of 1 point)
(Score for Question 2:
2. Weight
Answer:
Table
(Score for Table:___ of 18 points)
Use the Table of the Estimation of the Daily Resting Energy Expenditure (REE) to determine the calculation used
for each age range.
Questions
1. How does the REE change as a person?
2. What do these results indicate about how the body’s metabolism changes over time?
154. 170
166. 185
148. 156
What is the main form of energy in a Cheeto( before it is burned)? Radiant , Chemical, Motion, thermal
Answer:
I think it is chemical energy
Helppp me pls :$$)))
Answer:
A. containers A and B represent mixtures
Which is a characteristic of arthropod?
A. moist skin
B. feathers
C. scales
D. joint-legged
Answer:
D joint legged like butterfly
Answer:
D.joint legged
Explanation:
D.joint legged
is testicular pain serious or normal for teens ?☹☹☹
Guys plz tell i am seriously asking this question.
Answer:
growing pains maybe? if its really bad though you should go to the doctor
Explanation:
Answer:
yeah if it is really that bad you might want it checked.
What process involves rainwater filtering through soil?
Identify the name of each of the pathways [A, B, C]
Answer:
C [Krebs cycle]
B [glycolysis]
How does a model differ from a law or a theory?
a.
Models are universal
c.
Theories are only accurate under limited conditions
b.
Models are for all situations
d.
Models are only useful in limited situations
Please select the best answer from the choices provided
A
B
C
D
Answer:
models are universal. option A
Answer:
a. Models are universal
Explanation:
What two materials does the cardiovascular system deliver to the cells of the body?
A. carbon dioxide and nutrient
B. oxygen and nutrients
C carbon dioxide and waste materials
D. oxygen and waste materials
B. It delivers nutrients and oxygen.
Which tool would you use to predict the percentage of offspring that will have a specific trait?
• Microscope
• Flowchart
•Pedigree chart
• Punnett square
Answer:
Punnett square
Explanation:
Unlike the pedigree chart, which shows all possible offspring with a specific gene, the punnett square shows how many could have each genes.
Answer:
Punnett square
Explanation:
Match the vocabulary with the correct description.
Column A
Column B
1.
axis
a. angular distance north and south of the equator
2.
rotation
b. an imaginary line that an object spins or revolves around
3.
revolution
c. a force that exists between any two objects that have
mass
4.
latitude
d. the orbiting of an object around another object
5.
gravity
e. the spinning of a celestial body, such as a planet, around
an axis
Answer:
Axis - B
Rotation - E
Revolution - D
Latitude - A
Gravity - C
Explanation:
The axis is the line that a body spins on. The axis will line up with the north and south poles. For Earth, the axis is tilted, which is why seasons exist.
The definition of rotation is "the action of rotating around an axis or center." So, rotation is the spinning of a body on its axis. On Earth, one rotation is equal to one day.
Revolutions are when a body spins around another. For Earth, one revolution around the sun is one year
Latitudes are invisible lines that separate the world into degrees from North to South. They are also called parallels.
Gravity is the force that keeps things together. Large masses have gravity that attract other masses.
the right of a court to choose to do or not to do something particularly in relation to sentencing an offence is known as
Answer:
I HOPE IT WILL HELP U
Explanation:
guidelines
POSSIBLE POINTS: 1
Two plants are crossed, and the traits of height and color are assessed in the offspring. The following cross was conducted: TTPP x ttpp. Which of the
following choices correctly describes the offspring?
T = dominant allele for height, tall plant
t = recessive allele for height, short plant
P = dominant allele for color, purple
p = recessive allele for color, white
TP
TP
ТР
TP
tp
tp
tp
tp
O All are tall and purple
O Three-quarters of the plants are short and white
All are short and white
Three-quarters of the plants are tall and purple
Answer:
A. All are tall and purple
Explanation:
When you set up a punnet square, all of the results would be TtPp.
When a dominant trait is present, it preceeds over the recessive trait. (Also it depends on what genotypes are given. Ex: In flowers if they gave RR shows red, Rw shows pink, and ww shows white, but that's not the case here given that there are only 2 genotypes).
So to break it down:
Tt -> tall plant
Pp -> purple plant
so they are all tall and purple.
Amino acids are all the following EXCEPT:
a.
Can act as buffers.
b.
All have the same general structure.
c.
Can do the same functions of proteins.
d.
Can bind together by condensation reactions forming protein polymers.
A taxonomic key is a tool used to identify an unfamiliar organism.
a. True
b. False
*NO LINKS OR FILES*
What are 6 organisms that act as consumers in food webs?
Answer:
fish , cows, pigs, rabbit, horses, frogs , snake
Explanation:
cause ik producers are plants cause they make their own food and consumers - a person or animal that consume plants and other animals for food.
the list above of animals eat plants and other animals so their consumers
good luck! I hope I was correct
PLEASE HELP !! ILL GIVE BRAINLIEST *EXTRA 40 POINTS* DONT SKIP :(( .!
Answer:
it's a because
When we burn oil, coal, and gas, we change the ocean's basic chemistry, making it more acidic. Our seas absorb as much as a quarter of all man-made carbon emissions. Since the start of the Industrial Revolution (and our coal-burning ways), the ocean has become 30 percent more
Answer:
A - Burning coal
Explanation: When you burn coal you create polution which contributes to global warming, and global warming warms up the earth.
A scientist exploring in the rainforest found an unclassified organism. It is multicellular and made of multiple thread-like structures. The organism has cells with a nucleus and a cell wall made of chitin. The scientist should classify this organism as belonging to the kingdom—
Answer:
Kingdom Fungi
Explanation:
Based on certain characteristics possessed by living organisms, they have been classified into five different kingdoms namely; plantae, animalia, monera, protista and fungi. Organisms with similar characteristics have been placed under the same kingdom.
Kingdom Fungi is a kingdom that contains organisms that possess characteristics different from plants and animals. Some of these features are those possessed by the unclassified organism found in the rainforest and they are as follows:
- They are eukaryotic (possess a true nucleus) and multicellular (have more than one cell).
- Their cell wall is made of chitin (a carbohydrate)
- They are made of multiple thread-like structures called HYPHAE.
Based on these mentioned characteristics above, the scientist should classify this organism as belonging to the kingdom FUNGI.
When both lactose and glucose are available to E. coli, which part of the lac operon regulation assures that glucose will be metabolized first? When both lactose and glucose are available to E. coli, which part of the lac operon regulation assures that glucose will be metabolized first? Permease allows lactose to enter the cell when lactose enters the cell. The repressor binds to the operator in the absence of lactose. The repressor cannot bind to the operator in the presence of lactose. RNA polymerase transcribes the lac operon to make a single RNA molecule. CAP binds to cAMP and then to the promoter only in the presence of low glucose.
Answer:
CAP binds to cAMP and then to the promoter only in the absence of low glucose
Explanation:
When both lactose and glucose are available to E. coli, the part of the lac operon regulation that assures that glucose will be metabolized first is
CAP binds to cAMP and then to the promoter only in the absence of low glucose
Lactose is a type of sugar that is found naturally in milk produced by mammals and Glucose is a monosaccharide made mostly by plants during photosynthesis
why is cancer considered a genetic disease of somatic cell?
PLEASE HELP!
true or false: cardiac contractile cells have thick and thin filaments arrangement in sarcomeres.
Answer:
True
Explanation:
This is because sacromere is the basic unit of cardiac muscles which is made up of thin and thick filaments. Cardiac muscle is consist of the contractile cells of the heart which it's appearance is striated as a result of alternating thick and thin filaments which is composed of myosin and actin. Actin and myosin are both firm contractile protein filaments, the actin form the thin filaments, and myosin form thick filaments.
The scientific evidence that scientists use in supporting or critiquing the conclusions of experiments usually consists of
A. raw data.
b. outtlier data
c. precise data
d. summarized data
Answer:
D
Explanation:
summarized data
Data that summarize all observations in a category are called summarized data.
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