Answers
T cells directly attack pathogens or regulate other immune cells, providing humoral and cellular immunity.
What are b cells?
B cells are a type of white blood cells. B cells make a type of proteins called antibodies.
They are part of the immune system that develops from stem cells in the bone marrow. B cells are also called B lymphocyte.
The antibodies created by B cells go and bind to pathogens/foreign substances, like toxins, in order to neutralize them. For example, an antibody can bind to a virus, which will prevent it from entering a normal cell and causing infection in its wake.
The B cells then secrete cytokines in order to attract other immune cells.
Therefore, t cells directly attack pathogens or regulate other immune cells, providing humoral and cellular immunity.
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Related Questions
The only difference between plant and animal cells is that plant cells have chloropaste. Why is this sentence incorrect?
Answers
Answer:
Plant cells having chloroplasts is not the only difference between them
Justify your answer.Your cousin tells you that trees have leaves to protect the tree from sun damage, just like a natural umbrella. Do you agree? Justify your answer.
Answers
Answer:
no
Explanation:
trees need sunlight to grow the leaves that is on the tree
What is the main reason for displaying data in a graph?
OA. It helps scientists identify errors in an experiment's design.
OB. It shows more data than a table does.
C. It proves the scientific validity of the hypothesis.
OD. It allows scientists to interpret data visually.
Answers
OD. It allows scientists to interpret data visually.
The main reason for displaying data in a graph is to make the data more interpretable, accessible and easy to understand. Graphs allow scientists to visually represent the data and identify patterns, trends, and relationships that may be difficult to discern from the raw data or from a table. By displaying data in a graph, scientists can quickly and easily identify outliers, compare different data sets, and make predictions. Additionally, graphs are a powerful tool for communicating research findings to others, as they can be easily understood and interpreted by a wide audience, including scientists, policymakers, and the general public.
OA. It helps scientists identify errors in an experiment's design.
OB. It shows more data than a table does.
C. It proves the scientific validity of the hypothesis.
All these options can be useful too, but they are not the main reason for displaying data in a graph.
How do different elements form compounds?
Answers
when there is less rainfall than normal, the water level of australian rivers falls and the rivers flow more slowly. because algae whose habitat is river water grow best in slow-moving w
Answers
The contention states that Australian rivers dry up completely for short intervals in periods of extreme drought, was appropriate.
What is drought and its causes?Drought is caused by a need of precipitation, causing genuine water deficiencies. It can be lethal. Not at all like other extraordinary climate occasions that are more sudden, like seismic tremors or storms, drought happen steadily.Drought could be a drawn out dry period within the natural climate cycle that can happen anyplace within the world. It could be a slow-onset catastrophe characterized by the need of precipitation, coming about in a water deficiency. Dry spell can have a genuine affect on wellbeing, horticulture, economies, vitality and the environment.A drought is for the most part characterized as a period of below-average precipitation in a given locale, coming about in drawn out deficiencies in water supply. Droughts can final for months or a long time, and can have major impacts on the environment, biological system and agribusiness.Learn more about droughts here: brainly.com/question/26693108
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what process is used by the cell to move the molecules from outside the cell to inside the cell
Answers
Answer:
Diffusion
Explanation:
Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.
Organic semiconductors are a new technology that scientists are considering for the next generation of solar
panels. Manufacturers want to produce efficient semiconductors at a low cost. Which type of organic
semiconductors would be most desired as a solar panel technology?
Answers
The specific properties of the most desired organic semiconductors for solar panel technology may evolve as advancements are made in the field.
In the context of solar panel technology, the most desired type of organic semiconductors would typically possess the following characteristics:
High Efficiency: The organic semiconductors should have a high power conversion efficiency, meaning they can efficiently convert sunlight into electricity. This is crucial for maximizing the electricity output of solar panels.
Tunable Bandgap: Organic semiconductors with a tunable bandgap would be advantageous. The bandgap determines the range of light wavelengths that can be absorbed by the material. A tunable bandgap allows for optimization to match the solar spectrum, enabling better absorption of sunlight and improved overall efficiency.
Long Operational Lifetime: The organic semiconductors should be stable and exhibit a long operational lifetime. Solar panels are expected to endure outdoor conditions for many years, so the materials used should be resistant to degradation, such as from exposure to UV radiation or moisture.
Scalability and Low Cost: Manufacturers aim to produce organic semiconductors on a large scale at a low cost. Therefore, desirable organic semiconductors should be readily synthesized using cost-effective methods and be compatible with high-volume manufacturing processes.
Environmental Friendliness: Organic semiconductors that are environmentally friendly and have low toxicity are desirable. This is aligned with the goal of sustainable and clean energy technologies.
It is important to note that the field of organic semiconductor research is still evolving, and scientists are continually working to improve the performance and characteristics of these materials.
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oxygen, carbon dioxide:
a) facilitated diffusion
b) passive diffusion
c) phagocytosis
d) active transport
e) pinocytosis
Answers
50 points, need within next couple mins
If there was less erosion on the planet, it is less likely that there would be many living things on the land, and perhaps less in the ocean as well?
Answers
Answer:
yes
Explanation:
look at the link I gave you :)
During the cephalic phase of gastric secretion... A. thinking about, seeing, and smelling food reflexively increases gastric secretion B. vagal stimulation of the gastric glands occurs C. gastrin is released D. chewing food reflexively increases gastric secretion E. Both Band C are correct F. Both C and D are correct G. A, B, C, and D are correct
Answers
The complete question is:
What does NOT happen during the cephalic phase of gastric secretion?
a. Thinking about, seeing, smelling, and chewing food reflexively increases gastric
secretion.
b. Vagal stimulation of the gastric glands occurs.
c. Secretin is released.
Answer:
C). Secretion is released.
Explanation:
As per the question, the 'secretion releasing' does not take place throughout the cephallic phase pertaining to gastric secretion. During this phase, the food passes into the stomach while eating. This occurs causes acid secretion which is the response to the appetite stimulation caused by our senses like sight, smell, etc. Thus, option C is the correct answer.
Question List
Which describes the importance of taxonomy?
enables scientists to organize large amounts of information
enables scientists to communicate scientific information
provides basic understanding about the components of biodiversity
all of the above
Answers
All of the above describes the importance of taxonomy. Therefore, option (D) is correct.
What is taxonomy?Taxonomy is the science of classifying and naming organisms. It involves grouping organisms based on shared characteristics and assigning them scientific names according to established rules.
Taxonomy helps scientists to understand the relationships between different species and to organize and communicate information about the diversity of life on Earth. It provides a system for classifying and naming organisms that is widely used in biology and is essential for understanding the diversity of life on our planet.
In taxonomy, organisms are classified into a hierarchical system of categories, starting with the broadest (kingdom) and becoming more specific (phylum, class, order, family, genus, species). Each organism is assigned a scientific name consisting of two parts: the genus and the species. The genus is the first part of the scientific name, and the species is the second part. Together, these two parts form the unique scientific name for each organism
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Diego conducted an experiment to find out what kind of ball bounces the highest when dropped from a five-foot platform. He used a golf ball, a tennis ball, and a soccer ball. He dropped each ball from the balcony once. Diego recorded his observations after each drop.
What can Diego do to best improve the reliability of his results?
Answers
Drop each ball from the platform three more times . Reliability or precision means how much the measured values vary from each other when measured by performing the same experiment repeatedly. When measuring values by observation in physical experiments of this nature, it is best to perform the experiment and measure the values at least three times. The more the better. In such measurements there is always a margin of error, e.g., how at exact time you start and stop the stopwatch. There may also be a bit harder or softer side of ball (tennis ball strip) touching the ground. In order to minimize such and some other margin of errors, it is advisable to measure the values more than 3-4 times, and then take their mean. The value now obtained would be would reliable or precise. Second and third options are incorrect because they will have no effect on improving the reliability. In order for the fourth option to be correct, the other people need to do the same (not similar) experiment, with the same balls and same conditions/instruments. That would be equivalent to repeating the experiment 3-4 times, which is already covered by first option.
Explanation:
how the gas got out of the leaf
Answers
How the gas got out of the leaf??
The only way for gases to diffuse in and out of the leaf is though small openings on the underside of the leaf, the stomata. These stomata can open and close according to the plant's needs. The tissues of the leaf in between the epidermal cells, into which gases diffuse from the stomata, are called mesophyll.
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If a cell is placed in a HYPERTONIC solution, what will happen?
A. The cell will lose water to its enviroment because water will travel out of
the cell due to osmosis.
B. The cell will gain water because water will travel into the cell due to
osmosis.
C. The cell will remain the same because cells are not affected by solutions.
D. The cell will explode
Answers
Answer:
A
Explanation:
Alien Taxonomy Project IN THE YEAR 2525 Humans, after hundreds of years of constant effort, have successfully polluted all bodies of water on Earth. As a result, almost all previously known species of plant, animal, and other life have become extinct. Through natural selection, genetic engineering, and selective breeding programs, a portion of the Earth has been successfully repopulated. The following organisms are all that remain: 1. Photosynthetic sun-basking sharks. Their green fins have chlorophyll to convert sunlight to energy (autotrophs). 2. Chemosynthetic goldfish that convert pollution to food (autotrophs). 3. Aquatic humanoids whose main diet is aqua-wheat and basking sharks. They have fins instead of legs (heterotrophs). 4. Aqua-wheat: one of the few plants that remain, it is similar to algae. 5. Terrestrial Humanoids with 4 arms, their diet consists of butter-roaches and fuzzy hamsters. 6. Tentacled aqua humanoids, they only feed on aqua-wheat and have tentacles for arms and legs. 7. Cockroaches that feed on humanoid waste. 8. Giant Aqua-spiders that live in water and feed on goldfish and basking sharks. 9. Green-haired rats that are photosynthetic. 10. Parasitic mosquitoes that feed off any humanoid 11. Ten-legged fleas that live on the photosynthetic rats and drink blood. 12. Poison Grass - this plant is a hybrid between grass and poison ivy. The plants are toxic to almost everything (autotrophs) 13. Fuzzy hamsters with green hair that use the sunlight to make their food, thought to be related to the rats. 14. Butter-roaches: genetic engineering created these butterfly-like creatures from cockroaches. Butter- roaches eat poison grass. YOUR ASSIGNMENT: 1. As an alien taxonomist, it is your responsibility to classify these existing organism types. Create a taxonomic scheme using only kingdom, phylum, genus, and species. The intermediate categories have been eliminated since the total number of species has been drastically reduced. (Two Kingdoms are recommended). Each new group needs a name and a de
Answers
Photosynthetic sun-basking sharks. Their green fins have chlorophyll to convert sunlight to energy (autotrophs), Poison Grass - this plant is a hybrid between grass and poison ivy. The plants are toxic to almost everything (autotrophs).
How are organisms classified at each taxonomic level?The recent taxonomic system now has 08 stages in its hierarchy, from down to up , they are: species, genus, family, order, class, phylum, kingdom, domain. Thus species are grouped within genera, genera are grouped within families, families are grouped within orders, and so on.
Thus, taxonomic system now has 08 levels in its hierarchy, from down to up , they are: species, genus, family, order, class, phylum, kingdom, domain.
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what is it about science, as a way knowing, that makes it self-correcting?
Answers
Answer:
La ciencia es un conjunto de conocimientos obtenidos mediante la observación y el razonamiento, y de los que se deducen principios y leyes generales.
La ciencia explica la realidad mediante leyes, éstas son las relaciones constantes y necesarias entre los hechos.
Explanation:
Answer:
I think Science is remarkably self-correcting. When we publish papers in scientific journals, we organize our papers in a way that reflects the ideals laid out by Francis Bacon. We give enough of the details about our methods that someone else could repeat the study we are presenting. We present details about the analysis of our data.
I hope this help you!:)
28
Question 12
Smaller young can be attributed to all of the following except:
35
Not yet answered
Points out of 2.00
Select one:
a. Smaller mothers
P Flag question
b. Nutrition of the sire
c. Large litters
d. Young mothers
Answers
Answer:
I think b. Nutrition of the sire
Explanation:
4. The pancreas produces the hormone insulin that controls glucose (sugar)
levels in the blood stream. When it does not work properly, it can cause a disease
called - *
Leukemia
Appendicitis
Acid reflux
Diabetes
Answers
Answer:
Diabetes
Explanation:
What are the three categories of the 2nd line of defence in the immune system?
Answers
Answer:The immune system's three lines of defense include physical and chemical barriers, non-specific innate responses, and specific adaptive responses.
Explanation:
What is the purpose of studying radon pollution levels?
A.
to give scientists more information on nuclear decay
B.
to improve air quality and human health
C.
to find underground stores of valuable uranium
D.
to aid in finding a cure for lung cancer
Answers
The use of radon studies will help the scientists to get an idea about many scientific ideas. The purpose of studying radon pollution levels is to improve air quality and human health. Correct answer is option B.
What is pollution ?
The level of harmful substances on environment that are causing adverse effects on atmosphere dealing with the harmful effects and their side effects.
To improve air quality and human health the studies of radon to pollution levels will help to study about the air quality and the human health.
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Which situation could cause an ecosystem to lose its equilibrium?
A. Competition among species
B. Interdependence among species
C. Arrival of a nonnative species
D. An increase in the population of a keystone species
Answers
Answer: C
Explanation: the ecosystem is metastable, so an increase in the keystone species would be accommodated. Introductionof a nonnative species is likely to generate significant biotic change to the environment.
Which of the following describes a common feature of F-actin, microtubules and intermediate filaments? a) filaments are all made of up monomeric subunits b) filaments provide tracks for molecular motors c) filament assembly depends on ATP hydrolysis d) filament assembly depends on GTP hydrolysis e) filaments are all polar structures
Answers
Option b is Correct. The fact that filaments serve as tracks for molecular motors is what the next sentence refers to as a characteristic of intermediate filaments, microtubules, and F-actin.
Similar to actin filaments, microtubules are dynamic structures that can quickly expand and contract by the addition or subtraction of tubulin proteins. Microtubules exhibit directionality, which means they have two structurally distinct ends, making them similar to actin filaments in this regard.
For mobility and stability, this structure serves as a skeleton and muscle at the same time. The cytoskeleton's long fibers are polymers of subunits. The cytoskeleton is made up primarily of intermediate filaments, microfilaments, and microtubules. Actin filaments and microtubules are constructed of compact and globular actin subunits, whereas intermediate filaments are composed of smaller, elongated, and fibrous subunits.
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Which number label represents the cell membrane?
1
2
4
6
Answers
in which biome are minerals in the soil most rapidly depleted
Answers
Answer:
Boreal forest is among the largest terrestrial biomes on earth in which minerals in the soil most rapidly depleted.
TRUE OR FALSE: A coiled structure of DNA and protein that forms in the cell nucleus during cell division is called a chromosome
Answers
Answer:
TRUE!!!
Explanation:
In the nucleus of each cell, the DNA molecule is packaged into thread-like structures called chromosomes. Each chromosome is made up of DNA tightly coiled many times around proteins called histones that support its structure.
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A chromosome is a coiled DNA and protein structure that develops in the cell nucleus during cell division.
Thus, chromosomes are important for transporting and passing genetic information from one generation to the next. They house an organism's genetic material. When cells divide, they become visible under a microscope and take the form of compressed formations. Every species has a certain number of chromosomes.
Chromosomes are essential for cell division because they make sure that genetic material is accurately distributed to daughter cells. For effective cell function and heredity, they must have a compact and well-organized structure made of DNA securely coiled around histone proteins.
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Select all that apply. People with high blood pressure should reduce their consumption of
fat.
protein.
sugar.
salt.
vegetables.
Answers
Salt is the answer to this
The concentration of the solute in the soltuion is the same as the concentration inside the cell.
a. hypertonic solution
b. isotonic solution
c. hypotonic solution
Answers
Predict what you think will happen in the next 10 years for the next 50 years use your data as a reference compare and contrast ice cover on lake Monona and lake Mendota. I need help with number 4 and 5. ASAP PLEASE
Answers
Typically, ice cover on lakes is influenced by various factors including temperature patterns, water depth, and wind conditions. Lake Mendota is generally deeper and larger than Lake Monona, which may lead to some differences in ice cover patterns. It is possible that there may be a general trend towards less ice cover and shorter ice seasons due to rising temperatures in the future. However, any specific changes in ice cover patterns for these lakes may depend on various local factors and weather patterns.
An experiment was performed to measure the growth of bacterial colonies on an agar plate over a 48- hour period. Which type of graph or chart would be most suitable to represent the data. PLEASE HELP! THE ANSWER CHOICES ARE A: Pie chart B: Bar graph C: Stacked bar graph D: Line graph! This is 8th-grade science help:C
Answers
Answer:
D. Line graph
Explanation:
A line graph is used to track changes over short or long periods of time
the other options don’t make sense other than the bar graph but you are not comparing anything and it just makes more sense to use a line graph.
Let's suppose you were interested in developing drugs to prevent epigenetic changes that may contribute to cancer. What cellular proteins would be the target of your drugs?
Answers
Answer:
Potential targets:
1- DNA methyltransferases
2- Chromatin modifiers such as histone acetyltransferases, histone deacetylases, histone methyltransferases, etc.
3- Components of the RNA interference (RNAi) machinery such as Dicer, Argonaute, etc.
Explanation:
Epigenetics can be defined as the study of any heritable change in the phenotype that does not involve modifications in the DNA sequence. Epigenetic mechanisms can be classified into three major types: 1-DNA methylation, 2-histone modifications (e.g., acetylation, methylation, phosphorylation, etc), and 3-regulatory non-coding RNAs (e.g., miRNAs, lncRNAs, siRNAs, etc) that modulate target gene expression via the RNA interference pathway. There are different types of proteins that are involved in these complex epigenetic mechanisms, and those cited above represent only some examples that can be used as therapeutic targets.