Final answer:
The false statement about the immune system is that white blood cells are made in lymph nodes; they are actually produced in the bone marrow. Lymphocytes, such as B cells, are involved in adaptive immune responses, with B cells producing antibodies and memory B cells retaining pathogen information.
Explanation:
The statement about the immune system that is false is:
D. White blood cells are made in lymph nodes.
This statement is incorrect because while lymph nodes are a site where white blood cells can mature and interact with antigens, they are not the primary site of white blood cell production. White blood cells are primarily made in the bone marrow. Lymphocytes, which include B cells and T cells, are the subset of white blood cells that are involved in adaptive immune responses. Plasma B cells produce antibodies to fight against pathogens, and memory B cells retain the information about specific pathogens, enabling a faster and more robust response upon subsequent exposures. Meanwhile, certain white blood cells, such as macrophages, are known for their ability to phagocytize pathogens and produce inflammation-promoting chemicals.
End result of meiosis in humans
Answer:
Mitosis is the type of cell division the purpose of which which is that two identical copies of a cell are formed. The end result is that the DNA/chromosomes replicate and one set of chromosomes, with some of the cytoplasm and its contents, goes to each new "daughter" cells.
Why does sexual reproduction result in more genetic diversity than asexual reproduction
Answer:
Sexual reproduction provides genetic diversity because the sperm and egg that are produced contain different combinations of genes than the parent organisms
Explanation:
Answer:
Sexual reproduction provides genetic diversity because the sperm and egg that are produced contain different combinations of genes than the parent organisms. ... Each resulting cell, or gamete, resulting from meiosis has only half the amount of DNA as the parent cell
Explanation:
If you complete multiple trials of your experiment, that is called ____.
A) Repetition
B) Restitution
C) Replication
D) Repudiation
Answer:
A, repititon
Explanation:
If you are compeleting it more than once that means you are repeadting it
Answer:
A) Repetition
Explanation:
If you complete several attempts on your experiment, this is called repetition.
The repetition serves to safely answer the experimental data that will be used its average values and is used with the objective of trying to avoid the effect of the environment in the studied variables as much as possible.
It is quite common to choose 3 repetitions, as a good number to start. This is because the number 3 avoids the invariability of the number 1, escapes the danger of coincident repetition represented by the number 2, and already presents some variation, which in most cases is already sufficient to test the variability determined by the variation factors and by the repetitions.
How does a catalyst influence a chemical reaction?
Answer:
A catalyst speeds up a chemical reaction, without being consumed by the reaction. It increases the reaction rate by lowering the activation energy for a reaction.
Explanation:
A catalyst influence a chemical reaction is that catalysts speed up the rates of chemical reactions, but are not an integral part of the reactions themselves. A catalyst changes the rate of a reaction by providing an alternative pathway with a lower activation energy
How does a catalyst influence a chemical reaction?A catalyst is a substance that can alter the rate of a chemical reaction while itself remains chemically unchanged at the end of the reaction.Catalysts can be classified into positive catalysts and negative catalysts (inhibitors).A positive catalyst is a catalyst that increases the rate of a reaction.A negative catalyst is a catalyst that decreases the rate of a reaction.A catalyst does not change the quantity of the products formed. It only alters the rate of the reaction.The presence of a positive catalyst increases the rate of a reaction.To learn more about the catalyst, refer to: https://brainly.com/question/18318379
#SPJ2
What part helps equalize the pressure within the ear?
Answer: The "Eustachian tube" helps equalize the pressure within the ear.
__________________________________________
Hope this helps!
Best wishes to you!
__________________________________________
The idea that viruses originated as genetic material that was able to move within a genome, eventually exiting a cell and entering another is the _____ hypothesis.
Answer:
Progressive hypothesis
Explanation:
According to this hypothesis, the viruses originate with a progressive process. The mobile of the moving parts of genetic material capable of moving within a genome, gained the ability to withdraw from one cell and enter into another. In other words, viruses have risen from genetic elements that have gained the ability to move between cells .
Answer:
Progressive
Explanation:
According to this hypothesis, the viruses originate with a progressive process. The mobile of the moving parts of genetic material capable of moving within a genome, gained the ability to withdraw from one cell and enter into another. In other words, viruses have risen from genetic elements that have gained the ability to move between cells .
PENN
what is the name for a substance formed in a chemical reaction
Answer:
Explanation:
The starting substance is a reactant but then the new substance is the product.
Answer:
Product.
Explanation:
A chemical reaction may be defined as the reaction in which a new substance will form in the reaction. The evolution of gas, change in color during the reaction and evolution of heat determines the chemical reaction.
The substance that undergoes the chemical change is known as the reactant. The reactant that finally combines into the new substance known as product. The product is the final substance formed during the chemical reaction.
Thus, the answer is substrate.
When the ATP synthase molecules are open, the hydrogen ions move out of the thylakoid. how does the cell ise kinetic energy of the moving ions?
A. To split ATP into ADP and phosphate group
B. To combine ADP with a phosphate group to produce ATP.
C. To alter the shape of the photosystem ll protine
D. To power the electron transport chain
Answer:
The correct answer will be option-B.
Explanation:
ATP synthase is a multi-enzyme complex which is used to produce ATP as a result of the flow of protons in the mitochondria as well as the chloroplast.
The ATP synthase consists of two units- F₀ and F₁ in which the F₀ unit is embedded in the membrane and acts as a way to the protons whereas the F₁ contains the catalytic subunit which changes its conformation to form ATP from ADP and Pi.
The enzyme complex in chloroplast contains its F₁ portion towards the stroma and the protons flow from the inside of the thylakoid to stroma through F₀. The enzyme uses this energy to synthesize the ATP molecules from ADP and Pi.
Thus, Option-B is the correct answer.
what are the first cells to arrive at a bacterial infection
Answer: neutrophils i hope this helps
Answer:
Neutrophils
Explanation:
High neutrophils in the blood count can be a sign of bacterial or fungal infection. That's because neutrophils are the first cells to reach a bacterial infection. Neutrophils are a type of white blood cell, blood defense cells that participate in fighting infections caused by fungi and bacteria.
However, the number of neutrophils can also be high in cases of inflammation, tumor, bleeding, use of certain medications, among others.
Neutrophil levels may also be elevated in some temporary situations, such as infarction, after intense physical exercise, postoperatively, medication use (lithium, corticosteroids, epinephrine), smoking, pregnancy and newborns in the first days after delivery.
Question 10 (5 points)
Different forms of the same element that have different properties because of different atom arrangements are called_____
allotropes
carbons
silicons
graphites
Answer:
allotropes
Explanation:
what , measurement unit represents volume?
(A) Kilometer
(B) square centimeter
(C) centigram
(D) liter
Answer:
(D) liter
Explanation:
It is the SI unit of measuring volume.
liter is the unit capacity, formerly defined as the one kilogram of water.it is used to measure volume and is equal to 1000 cubic centimeters or 1 cubic one decimeter.
A solution containing HCI would likely have
Answer:
A solution with HCl would likely have a low pH and a high pOH. Hydrochloric acid or HCl, from the name itself is acidic its pH is always below neutral pH or 7. pH is the measure of the concentration of hydronium ions (H3O+) in a solution while pOH is the measure of the concentration of hydoxide ions (OH-) in a solution. A relationship exist between the two values of a solution where pH + pOH = 14 therefore when the pH is low, consequently, the pOH is high.
Explanation:
hope this helps
A solution containing HCI would likely have a low pH and a high pOH.
How can the pH of the solution be calculated if the pOH is known?In order to calculate the pH, take the negative log of the hydronium ion concentration. To find the pOH, simply subtract the pH from 14. In order to calculate the pOH, take the negative log of the hydroxide ion concentration. To find the pH, simply subtract pOH from 14.
How is pH related to pOH?As pH increases, pOH decreases. As pH decreases, pOH increases. Knowing what ion you are measuring on which scale, will tell you whether or not the solution is acidic or basic. Because these scales are related, an equation can be used to explain their correlation.
Learn more about solutions here https://brainly.com/question/25689052
#SPJ2
Which of the following is most likely the result of an organism having lipids in its body
A) water cannot be absorbed through the surface of a leaf
B)human eats fruits to get a quick source of energy
C) a sheep sleeps for more hours in the winter
D) a warm river is filled with fish and algae
Which features is used to classify a rock based on its composition
The origin of the rock
The texture of the rock
The type of mineral in the rock
The shapes of the crystal in the rock
Answer:
The correct answer is "The type of mineral in the rock".
Explanation:
Rocks are classified mostly by its texture and its composition. When a rock is classified based on its composition the feature that is most used is the type of mineral in the rock. For instance, igneous rocks are made of silicate minerals, while quartz, K-feldspar, and muscovite are found in sedimentary rocks.
Who are the final link in the energy flow in a food chain or food web?
are the final link in the energy flow in a food chain or food web.
Answer:
Explanation:
depending on which enviorment which you have not included
Color blindness is a recessive trait. The gene for color blindness is on the X-
chromosome. The family tree below shows the trait of color blindness. The
only unknown is the mother in the first generation.
TO
What must be true about the mother?
O
A. She has at least one recessive color blindness allele.
O
B. She only has one X chromosome.
O
C. She is color-blind,
O
D. She has two recessive color blindness alleles.
The statement 'she has at least one recessive color blindness allele' must be TRUE about the mother (Option A).
What is chromosome X inheritance?Chromosome X is a special type of chromosome whose inheritance pattern is different from Mendelian inheritance.
Males receive only one X chromosome, whereas females receive two X chromosomes.A carrier is an individual who inherits one defective allele (in this case, the color-blindness allele).In conclusion, the statement 'she has at least one recessive color blindness allele' must be TRUE about the mother (Option A).
Learn more about X chromosome inheritance here:
https://brainly.com/question/9773481
Which characteristic of water is most helpful to fish in a lake?
A.
Water freezes at 0°C.
B.
Water molecules are polar.
C.
Two elements make up the compound water.
D.
Frozen water floats on liquid water.
Final answer:
Frozen water floats on liquid water, providing an insulating barrier for fish in a lake.(Option D)
Explanation:
The characteristic of water that is most helpful to fish in a lake is that frozen water floats on liquid water.
When water freezes, it becomes less dense and expands. This causes it to float on the surface of the lake instead of sinking to the bottom. The layer of ice acts as an insulating barrier, providing protection for the fish living in the liquid water beneath.
Without this characteristic, the lake would freeze solid from the bottom up, making it impossible for fish and other organisms to survive.This unique property of water, where frozen water floats, not only forms an insulating barrier crucial for fish survival but also prevents lakes from freezing solid, ensuring the viability of ecosystems and the diverse organisms that rely on liquid water habitats.
Why do scientists use tables and graphs
Hello There!
Scientists use tables and graphs because it is a visual representation of their results. Also, with tables it keeps their data organized. If a scientist is dealing with certain percents, a pie chart would come in handy.
Which organisms are likely to be found in level 4 of diagram?
A. Lion
B. Grass
C. Shark.
D. Frog
E. Mouse
Answer:
A. lion C. shark
Explanation:
Lion and shark are the organisms likely to be found in level 4 of diagram.
TROPHIC LEVEL:
Living organisms in their natural environment obtain food or energy source by feeding on one another. The linear feeding relationship between organisms is called food chain. In a food chain, the different levels attained by organisms involved in the food chain is called trophic level. The first trophic level is assumed by producers followed by consumers. The tertiary consumers assume the last trophic level of a food chain, which is represented by level 4 in the diagram above. Lions and sharks are good examples of tertiary consumers. Therefore, Lion and shark are the organisms likely to be found in level 4 of diagram.Learn more at: https://brainly.com/question/15948938?referrer=searchResults
The negative change found inside the plasma membrane is created by _________________.
potassium ions
sodium ions
hydrogen ions
chlorine ions
The negative charge that found inside the plasma membrane is created by movement of potassium ions.
Explanation:
The concentration of the potassium ions is very high inside the cell but low outside the cell whereas the concentration of both Sodium and chloride ions is more outside the cell but less inside the cell. Inside of the cell plasma membrane is negatively charged in spite of having large positively charged potassium ion concentration due to the presence of organic anions in large amount and leaks of potassium ions.
These anions are the charged group of the proteins and other organic molecules. As the membrane is more permeable to the movement of potassium ions outside the cell, the comparative ratio of the concentration of organic anion to cation increases with the decreasing cations concentration and causes the membrane to have a negative charge on the inside.
In order for you to hold your breath, your nervous system must send messages to your
A. Respiratory System
B. Digestive System
C. Heart in your cardiovascular System
D. check in your muscular System
Answer:
A. Respiratory System
Explanation:
Answer:
your answer is A!
Explanation:
In each transformation of energy , some energy what?
Answer:
An energy transformation is the change of energy from one form to another. Energy transformations occur everywhere every second of the day. There are many different forms of energy such as electrical, thermal, nuclear, mechanical, electromagnetic, sound, and chemical.
Consider the following hypothesis:
Soybean plants produce more soybeans when given nitrogen-nich fertilizer.
Which of these should the experiment do in order to best test this
hypothesis?
A. Compare the heights of soybean plants grown with and without
nitrogen-rich fertilizer
B. Compare the masses of soybeans obtained from plants grown
with and without nitrogen-rich fertilizer
C. Measure the amount of nitrogen in the soil before and after
harvesting soybeans
D. Measure the rate of water absorption by soybean plants before
and after receiving fertilizer
Final answer:
To test if nitrogen-rich fertilizer increases soybean production, compare the masses of soybeans from plants grown with the fertilizer to those without it, and control other variables. So the correct option is B.
Explanation:
To best test the hypothesis that soybean plants produce more soybeans when given nitrogen-rich fertilizer, you should compare the masses of soybeans obtained from plants grown with and without nitrogen-rich fertilizer. To conduct the experiment:
Identify two groups of soybean plants, one as the experimental group that will receive the nitrogen-rich fertilizer and one as the control group that will not receive the fertilizer.Ensure that all other variables, such as the amount of water, sunlight, and the type of soil, are kept constant across both groups.At the end of the growing season, harvest the soybeans from both groups and compare the masses of the harvested soybeans to see which group produced more.By measuring the mass of soybeans rather than other factors such as height or water absorption rates, you are directly assessing the outcome relevant to the hypothesis.
- What is one half of a duplicated chromosome called?
Answer:
It's a Chromatid.
Explanation:
Hope my answer has helped you!
What is the gel-like fluid that fills the cell and surrounds the organelles?
Answer:
The cytoplasm.
Explanation:
This gel-like fluid helps the cell keep its shape and allows substances to move around the cell.
Answer:
The correct answer will be- Cytoplasm.
Explanation:
The cytoplasm is a transparent, clear and gel-like material enclosed by the cell membrane of the cell.
The cytoplasm is made up of main water but contains important constituents required by the cell-like enzymes, salts, organic molecules and mainly cell organelles.
The cell organelles always remain suspended in the cytoplasm where it acts as a site for a various metabolic reaction like transcription and glycolysis.
Thus, the cytoplasm is the correct answer.
Which of these statements express a scientific theory
A.The larger of two cells probably contain a nucleus
B. Cells are the basic unit of life
C. All the tissues that make up animals consist of cells
D. A material the consists of cells came from living organism.
Answer: B) cells are the basic unit of life
Explanation:
i got it right
Which of the following would most likely be formed by erosion?
Mountain
Valley
Flat Plain
Volcano
(The text is attached above. Please state why YOU think the answer is, aswell as what you think the TEXT states)
Answer:
Valley
Explanation:
Weathering and Erosion can "wear down mountains and carve plains"
I also just submitted the assignment and valley was marked correct.
What are the functions of bones
Answer:
There's lots
Explanation:
Bones have many functions. They support the body structurally, protect our vital organs, and allow us to move. Also, they provide an environment for bone marrow, where the blood cells are created, and they act as a storage area for minerals, particularly calcium.
Hello There!
I broke this question down into 3 main functions of bones and will briefly explain each one.
"SUPPORT" Almost like the steel framework of a building, bones provide rigidity. This gives the body shape and supports the weight of muscles and organs. Without this, the body would collapse on itself.
"MOVEMENT" There are 3 major systems involved with the mechanics of movement. These are the "Nervous System" "Muscular System" And "Skeletal System" The nervous system send electrical impulses that activate our muscles.
"PROTECTION" Bones protect soft inner body organs from getting damaged. An example is the scull protects the brain from getting damaged.
This element is solid, forms the backbone of many compounds, and life is based on it. What is it?
Answer:
Carbon is your answer.
how do air masses interact to form a cyclone?
Answer:
Air moves in a spiraling pattern from centers of high pressure toward centers of low pressure.
Explanation:
Answer:Air moves in a spiraling pattern from centers of high pressure toward centers of low pressure.
Explanation: :)