What is the immune system response to malaria?
Outline the 3 lines of defence of the immune system.
Answer:
Although the evidence for a protective role of B cells and antibodies has been noted, the direct contribution of CD4+ T cells in protection against blood stages beyond a helper function for CD4+ T cells has mainly derived from rodent models of malaria.
Scientists group organisms into kingdoms by looking at specific characteristics. Thermus aquaticus, shown below, is a specialized bacteria called a thermophile. Thermophiles are microorganisms that can live in bodies of water that are extremely hot, such as deep sea hydrothermal vents.
A microscopic image of thermus aquaticus.
Which characteristic most likely describes a mushroom but not Thermus aquaticus?
cell wall
eukaryotic
unicellular
prokaryotic
Eukaryotic is the characteristic most likely describes a mushroom but not Thermus aquaticus because it is a is prokaryotic organism.
What are eukaryotic organisms?Eukaryotic organisms are life forms that are characterized to have cell nuclei and membrane-bound organelles.
Eukaryotic organisms can be either unicellular or multicellular (e.g. plants and animals).
In conclusion, Eukaryotic is the characteristic most likely describes a mushroom but not the bacterium Thermus aquaticus.
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What is the pressure in mm hg of a 0.025 mole sample of co2 at 350 k in a 2.00 l container? report your answer to the nearest mm hg
The pressure in mmHg of a 0.025 mole sample of CO2 at 350 k in a 2.00L container is 273.6 mmHg.
How to calculate pressure?The pressure of a gas can be calculated using the following expression:
PV = nRT
Where;
P = pressureV = volumen = number of molesR = gas law constantT = temperatureP × 2 = 0.025 × 0.0821 × 350
2P = 0.72
P = 0.72/2 = 0.36atm
Therefore, the pressure in mmHg of a 0.025 mole sample of CO2 at 350 k in a 2.00L container is 273.6 mmHg.
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Please use the graph to the
left to help you answer this
question.
Which of the following
describes the DEPENDENT
variable?
A. the group in which the conditions
were not changed
B. the variable that is changed by the
person doing the experiment and
located on the x-axis
C. the variable that is observed or
measured by the experimenter and
located on the y-axis
9
D. the observation that the
experimenter made that started the
experiment
Answer:
C
Explanation:
The dependent variable is always the outcome, data, or what is being measured in an experiment.
Why was natural selection an important contribution to the theory of evolution?
Answer:
Natural selection is an important contribution to the theory of evolution because it increases an individual's ability to survive and compete and reproduce.
Explanation:
what are the components of the PNS ?
The components of the Peripheral nervous system consists of nerves, ganglia and nerve endings.
What is the function of peripheral nervous system?The peripheral nervous system is one of the divisions of the central nervous system. Its function is to transmit information from it to other organs and specific parts of the body. Function is carried out through the nerves and nerve ganglia.
In this case, we can say that The Peripheral Nervous System is formed by nerves and ganglia and its function is to bring information to the Central Nervous System and responses to Organs effector organs.
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Which animal had to eat the most frequently in order to maintain its energy level
Answer:
A. Rattlesnake
B. Small fish
C. Hummingbird
D. Kangaroo rat
Explanation:
These animals live in a very harsh climatic region so the need fulfill their hunger properly according to the difficulties and problems.
Membrane proteins that bind to signal by which cells communicate are called
Membrane proteins that bind to signal by which cells communicate are called receptors are generally transmembrane protein.
What is the function of the stop sequence to a transmembrane protein?When the protein presents an internal signal sequence (SSI), this sequence, in addition to directing the transport of the translational complex to the REG, will also act as an SPT, with the carboxy-terminal portion of the protein facing the lumen. from the reticulum or into the cytosol.
in this case, many transmembrane proteins function as gateways to permit the transport of specific substances across the membrane.
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A DNA segment in a somatic cell undergoes the mutation shown;
ATTACC à ACTTACC
This represents a
______Mutation
Answer:
This represents a frameshift mutation.
Explanation:
The difference between the two sequences is that there is an extra base (C) in the second sequence. A frameshift mutation occurs when there is an insertion or deletion of a nitrogenous base into a DNA sequence.
How many layers of tissue does an artery have?
The Artery contains three layers of tissue; Intima, media and adventitia.
The artery plays a vital role in the body; the artery carries blood away from the heart. This blood vessel carries blood away from the heart to important organs and tissues in the body.
There are there types of arteries; Elastic arteries, muscular arteries and Arterioles
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Can someone help me please
wise is the answer because the word bold also means wise
the answer is lazy because sage also means lazy
PLEASE HELP IM STUCK
Select the correct answer. A force of 15 newtons is applied to both Object A with a mass of 25 kilograms and Object B with a mass of 50 kilograms. What is true about the acceleration of Object A and Object B? A. Acceleration of Object A is four times that of the acceleration of Object B. B. Acceleration of Object A is the same as the acceleration of Object B. C. Acceleration of Object A is half the acceleration of Object B. D. Acceleration of Object A is twice that of the acceleration of Object B.
By Newton's second law
F=ma , F=force (unit= N)
m=mass (Kg), a=acceleration (m/s2)
By applying the formula, we can calculate acceleration
a = F/ m
For object A,
Force =15N, Mass=25kg
a= 15/25
acceleration, a=0.6m/s2
For object B,
Force=15N, Mass=50 kg
a=15/50
acceleration,a=0.3m/s2
By calculation, the acceleration of object A is twice the of object B.
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Answer:
See image
Explanation:
Plato
Organisms that are distributed
evenly across the environment
have a
dispersal
pattern.
A. uniform
B. clumped
C. random
The cost of renewable energies has increased over the last decade
A. true
B. False
Which of the following correctly describes what happens to liquid and gas particles with
more thermal energy?
Select one:
O a. Liquid and gas particles with more thermal energy expand.
O b. Liquid and gas particles with more thermal energy condense.
O c.
Liquid and gas particles with more thermal energy rise.
O d. Liquid and gas particles with more thermal energy fall.
Answer:
i think a. is correct answer (:
hope its help for u
A. Point Source
B. Non-Point Source
This would be
considered what
type of water
pollution?
The given scenario would be considered "Point Source" water pollution.
Point source water pollution refers to the contamination of water bodies that can be traced back to a specific, identifiable source or location. This type of pollution occurs when pollutants are discharged directly into water bodies through pipes, drains, or other identifiable outlets.
These sources can include industrial facilities, wastewater treatment plants, oil spills, or sewage systems. Point source pollution is relatively easier to monitor and control because the source is identifiable, allowing for targeted measures to reduce or eliminate the pollution.
In contrast, non-point source pollution refers to pollution that is more diffuse and comes from multiple, widespread sources, such as agricultural runoff, urban runoff, or atmospheric deposition.
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In pea plants, tallness (t) is dominant to shortness (t). what are the predicted percentages of the genotypes of the offspring if a homozygous short plant is crossed with a heterozygous tall plant?
If a homozygous short plant (tt) is crossed with a heterozygous tall plant (Tt), the percentage of tall offsprings is 50% and the percentage of short offspring is 50%.
A heterozygous tall pea plant will have the genotype "Tt" and a homozygous short pea plant will have the genotype "tt" because homozygous means that both alleles are identical.Since 'T' is dominant over 't', any plant with at least one "T" allele will be tall (the dominant trait), regardless of what the other allele is.The punett square of the following problem will have 2 squares with Tt genotype and 2 squares with tt genotype.Hence, the genotypic ratio of F1 generation will be
Tt : tt
1 : 1
And phenotypic ratio of F1 generation will be
Tall : Short
1 : 1
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Four different thermometers were used to measure the temperature of a sample of impure boiling water. The measurements are recorded in the table below.
Thermometer Temperature
Reading 1 Temperature
Reading 2 Temperature
Reading 3
W 100.1°C 99.9°C 96.9°C
X 100.4°C 102.3°C 101.4°C
Y 90.0°C 95.2°C 98.6°C
Z 90.8°C 90.6°C 90.7°C
The actual boiling point of pure water is 100.0°C.
What can be concluded from the data about the reliability and validity of the thermometers?
A.
Thermometer W is the most reliable.
B.
Thermometer X has the highest validity.
C.
Thermometer Z is the most reliable.
D.
Thermometer Y has the highest validity.
Reliability is another name for the precision of the measurement, and it means how well the value is repeated; this is, how close the different measurements are to each other. If the measurements are close one to each other, then the instrument is precise or reliable (high reliability).
Validity is another name for the accuracy of the measurement; this is, how close the measurement is to the true or accepted value.
With that, we can compare the reliability (precision) and validity (accuracy) of the four different thermometers.
Repeat the table:
Temperatures in °C:
Thermometer Reading 1 Reading 2 Reading 3
W 100.1 99.9 96.9
X 100.4 102.3 101.4
Y 90.0 95.2 98.6
Z 90.8 90.6 90.7
Reliability:
To analyze reliability (precision) we must compare the measures of every thermometer among them. A good approximation can be made calculating the range, i.e. the difference between the largest and the smallest readings:
For W: largest reading - smallest reading = 100.1°C - 96.9°C = 3.2°CFor X: largest reading - smallest reading = 102.3°C - 100.4°C = 1.9°CFor Y: largest reading - smallest reading = 98.6°C - 90.0°C = 8.6°CFor Z: largest reading - smallest reading = 90.8°C - 90.6°C = 0.2°CNow, you conclude that the most reliable is thermometer Z and the least reliable is thermometer Y. The complete ranking, from most reliable to least reliable is:
Z > X > W > Y
Validity:
To determine validity you must compare the mean of the three measures for each thermometer with the accepted value for the boiling point of pure water (100.0°C).
The mean is the sum of the three readings divided by 3.
The absolute error is calculated with the formula:
absolute error = | accepted value - calculated value |.
The calculated value is the mean.
For W: mean = (100.1 + 99.9 + 96.9)°C / 3 = 99.0°C
absolute error = 100.0°C - 99.0°C = 1.0°C
For X: mean = (100.4 + 102.3 + 101.4)°C / 3 = 101.4 °C
absolute error = 101.4°C - 100.0°C = 1.4° For Y: mean = (90.0 + 95.2 + 98.6)°C / 3 = 94.6°C
absolute error = 100.0°C - 94.6°C = 5.4°C
For Z: mean = (90.8 + 90.6 + 90.7)°C / 3 = 90.7°C
absolute error = 100.0°C - 90.7°C = 9.3°C
Now you can rank the thermometers as per their validity (accuracy):
1.0°C < 1.4°C < 5.4°C < 9.3°C
Thus, W is the most accurate, X is the second most accurate, Y is the third, and Z is the least accurate.
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Explain the feelings of Eliezer and his father during the Rosh Hashana celebration
Answer:
got this from a website
Explanation:
Eliezer shares a silent, powerful moment of sadness and understanding with his father. For Yom Kippur, when Jews traditionally fast, his father forbids Eliezer from fasting. Eliezer no longer believes in such rituals, anyway.
it is a feeling of sadness
Photon energy, Wave Frequency and Wavelength are represented in the:
Photon energy, Wave Frequency, and Wavelength are represented in the Electromagnetic spectrum. Thus, the correct option is A.
What is Wavelength?Wavelength may be defined as the space between equivalent points (crests) in the contiguous cycles of a waveform movement propagated in space. It is represented as λ (lambda).
The wave frequency and wavelength are inversely related to one another, while photon energy is directly related to wave frequency, but inversely related to wavelength.
We study the association of all these terms in the unit of the electromagnetic spectrum.
Therefore, it is well described above.
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What is the role of RNA polymerase?Which molecule brings amino acids to the ribosomes to be assembled into proteins?
An enzyme called RNA polymerase is in charge of converting a DNA sequence into an RNA sequence during transcription.
The molecule that brings amino acids to the ribosomes to be assembled into proteins is Transfer RNA (tRNA) . Transfer RNA (tRNA), small molecule in cells that carries amino acids to organelles called ribosomes, where they are linked into proteins.
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for patients with prediabetes, what strategies does the diabetes prevention program show are effective in reducing the risk of progressing to type 2 diabetes?
Lifestyle changes such as losing weight and living an active life are effective in reducing the risk of progression of prediabetes to type 2 diabetes.
What is diabetes?Diabetes is a disease in which the body is unable to utilize glucose in the body efficiently.
Patients who are prediabetic are at risk of developing diabetes.
However, the diabetes prevention program shows that lifestyle changes such as losing weight and living an active life are effective in reducing the risk of progressing to type 2 diabetes.
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Answer:
it is D
Explanation:
got it right edge 2022
Why is acetylcholine broken down?
Acetylcholine broken down is the process by which this neurotransmitter activates a suitable ligand-receptor to trigger a cell signaling pathway.
What is Acetylcholine?Acetylcholine is a chemical messenger (i.e., a neurotransmitter) that is used to transmit signals inside the body.
Acetylcholine broken down is due to its hydrolysis, which ends cell signaling between brain synapses.
In conclusion, Acetylcholine broken down is the process by which this neurotransmitter activates a suitable ligand-receptor to trigger a cell signaling pathway.
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Which statement best describes scientists who contributed to the current body of science knowledge
The appropriate choice must be (A).
What is the role of scientists in society?Science contributes greatly to the generation of knowledge and hence contributes to the operation of democracies, fosters innovation and allows countries to be competitive in the global economy.
The ongoing work of men and women from various nations throughout history has contributed to the existing body of scientific knowledge.
It is not simply wealthy men with money who could conduct experiments and get a scientific conclusion. We are all familiar with Marie Curie, who is renowned for her work in radioactivity and twice earned the Noble Prize.
Of course, advances in science have been accomplished before to the 20th century; for instance, Newton discovered gravity in the 17th century.
Therefore, the existing body of scientific knowledge is not constrained by specific limitations; rather, it is the result of ongoing efforts made by men and women from various nations throughout history.
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- Beaker A has 5% salt; Beaker B has 10% salt; Beaker C has 20% salt. Which beaker has
a higher concentration
A. beaker A
C. beaker C
of water?
B. beaker B
Answer: C. Beaker C
Explanation:
Because there is more of salt, the solute in the the solvent, water.
The receptor cells for vision are located in the _____ and are called _____ and _____
The receptor cells for vision are located in the retina of the eyes and are called rods and cones.
What are receptor cells?
Receptor cells are proteins found either inside a cell or on its surface which receive a signal.
The two primary photoreceptor cells are rods and cones and they contribute to the information used by the visual system to form a representation of the sight.
They are found in the retina of the eye.
Therefore, the receptor cells for vision are located in the retina of the eyes and are called rods and cones.
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What day is considered to be the first day of a female's reproductive cycle?
• When hormone levels are low and the uterus lining is shed.
• When hormone levels are high and the uterus lining is shed.
• When hormone levels are low and the ovary releases an egg.
• When hormone levels are high and the ovary releases an egg.
Question: What day is considered to be the first day of a female's reproductive cycle?
Answer: When hormone levels are low and the uterus lining is shed.
The first day of a female's reproductive cycle is when hormone levels are low and the ovary releases an egg. This is known as ovulation and is the most important part of a woman's menstrual cycle.
What happen during ovulation?During ovulation, the egg's follicle bursts open and is released, travelling down the fallopian tube towards the uterus.
If the egg is fertilised, it will implant in the uterus and a pregnancy will begin; if it is not, it will be reabsorbed by the body, and the cycle will restart.
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Hemophilia is an X-linked recessive disorder (Xh) that is passed through generations and can be traced by using a pedigree.
Charles is a blank box with a Upper X Upper H Upper Y genotype and Marie is a half-filled circle with a X Upper H x h genotype.
What is the probability that a female child of Charles and Marie would suffer from hemophilia?
0 percent
25 percent
50 percent
100 percent
The probability that a female child of Charles and Marie would suffer from hemophilia is 0 percent.
What are X-linked diseases?X-linked diseases are diseases whichabre found only on the X chromosomes.
Hemophilia is an X-linked recessive disorder (Xh)
Charles is has the normal X chromosome YXH
Marie is a carrier of the disease XHXh
A cross between YXH and XHXh will not produce any XhXh.
Therefore, the probability that a female child of Charles and Marie would suffer from hemophilia is 0 percent.
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Arrange the following events that occurred during the French and Indian War in chronological order.
the British gain control of St. Lawrence River
the Battle of Monongahela River
the battle for the city of Quebec
the siege of Fort William Henry
↓
↓
↓
1. Monongahela River
2. Fort William Henry
3. British gain control of the St. Lawrence River
4. Battle of Quebec
What is the Battle of Monongahela River?All battles given were between the French and British. However, the two battles that happened prior to 1756 were the Battle of Monongahela River and the Battle of Lake George. The first battle happened on July 9, 1755. It was won by the French and Indian troops against the British and Americans. The second battle happened on September 8, 1755. It was won by the British, and is considered their first major victory against the French troops.
Thus, this could be the answer.
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