Which statement about the specific immune response is FALSE?
Each T or B cell has antigen receptors for only one specific antigen.
T and B cells recognize antigens by using antibodies bound to their surface membranes.
Unique antigen receptors are created by genetic recombination.
Antigens must be presented by an MHC molecule for T and B cells to recognize them.
All cells express MHC-I molecules, but only antigen-presenting cells express MHC-II molecules.

Answers

Answer 1
Statement b is incorrect because the B cells are the only ones that produce antibodies which does apply for the T cells

Related Questions

Which of the following statements would correct one of the roles listed in the table?

Answers

Answer:

Glucose combines with water to form carbon dioxide.

Explanation:

Glucose combines with water to form carbon dioxide.

X-Ray are and example of electromagnetic radiation?
True or false

Answers

Answer:

True

Explanation:

Answer: true

Explanation:

Estimating the weight of a dinosaur using only bones is difficult. Another way is by using scale models. The density of a dinosaur is scaled based on the average density of what living animal

Answers

Given what we know about the methods used by scientists to estimate the weight of a dinosaur, we can confirm that the density of a dinosaur is scaled based on the average density of the common crocodile.

Scaling the density of an extinct animal based solely on bones can be a daunting task. Since the bones themselves do not offer much information on which to base such a calculation, scientists are often forced to rely on other estimations. One such example is the bone scaling method.

This method relies on the genetic relationships shared between the dinosaur and current-day living animals. This offers the ability to compare the dinosaur to the known body mass of a modern-day living animal. The animal most commonly used is the crocodile, however, though this method can provide the scientists with a degree of accuracy, it lacks precision.

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What is the medical term for an undescended testicle?

Answers

Answer:

a. Cryptorchidism

Explanation: is correct

what are sunspots and how do they affect us?

Answers

Answer:

Basically, Sunspots are storms on the sun's surface that are marked by intense magnetic activity and play host to solar flares and hot gassy ejections from the sun's corona.

Explanation:

Give two ways that differentiation is the same in plants and animal.​

Answers

Cell elongation does not occur in animals. The cells of multicellular animals and plants must also differentiate , so that its cells develop features that enable them to fulfil specific roles. Cells that have differentiated have become specialised.

Differentiation in plants and animals involves the specialization of cells for specific functions, and it results in the development of different tissues and organs.

What is differentiation in plants and animals?

Differentiation refers to the process by which cells become specialized in structure and function. In plants and animals, this process occurs during development and results in the formation of different types of cells, tissues, and organs.

During differentiation, cells undergo changes in gene expression, which leads to the production of different types of proteins and other molecules. These changes can be triggered by various signals, such as hormones, growth factors, and environmental cues.

In animals, differentiation occurs during embryonic development and results in the formation of different types of tissues, such as muscle, bone, and nerve tissue. In plants, differentiation occurs during both embryonic development and growth and results in the formation of different types of tissues, such as root tissue, leaf tissue, and stem tissue.

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During the final events of cellular respiration, oxygen combines with ________ to form ________. hydrogen ions only; water carbon only; CO2 energy-depleted electrons and carbon; CO2 energy-depleted electrons and hydrogen ions; water energy-depleted electrons only; water

Answers

Answer:

energy-depleted electrons and hydrogen ions; water

Explanation:

Some single-celled organisms make copies of themselves through mitosis. Which describes the function of the cell cycle in such single-celled organisms?

Answers

Answer:

In unicellular organisms such as bacteria, mitosis is a type of asexual reproduction, making identical copies of a single cell.

Explanation:

Unicellular organisms are asexual which means they don"t need partners.

1 point
10) Energy being stored in an object that has the potential to do work is
called
a. hydro energy
b. kinetic energy
c. thermal energy
d. potential energy

Answers

Answer: D. Potential Energy

Explanation:

The energy stored in that object has the potential of doing something/becoming kinetic energy.

the ventral rami of spinal nerves ________ form the major nerve plexuses.

Answers

Answer:

The blank is:

C1 through T1 and L1 through S4

Hope this Helps

Transport proteins in cell membranes maintain the proper balance of _________ (mostly outside the cells) and _________ (mostly inside the cells).

Answers

Answer: sodium and potassium

Explanation:

Which biome are the best suited for agriculture? Explain why each of the biomes you did not specify is less suitable for agriculture.

Answers

The biomes most suited for agriculture are temperate deciduous forest and grasslands. Tundra is not suitable for agriculture because it is to cold and has water logged soil. Boreal forest is not suitable because it has a short growing season and mineral poor soil.

How does nitric oxide cause your blood vessels to relax?

Answers

Answer:

increases blood flow and lowers blood pressure.

Explanation:

How are glucose and ethanol similar in structure and function?

Answers

Answer:

Ethanol fermentation, also called alcoholic fermentation, is a biological process which converts sugars such as glucose, fructose, and sucrose into cellular energy, producing ethanol and carbon dioxide as by-products...

Explanation:

Ethanol fermentation, also called alcoholic fermentation, is a biological process which converts sugars such as glucose, fructose, and sucrose into cellular energy, producing ethanol and carbon dioxide as by-products.

adventitious storage roots are seen in
a)Carrot
b)Sweet potato
c) Turnie
d)Radish​

Answers

Answer:

[tex]a)Carrot [/tex]

...............

Scientists find cell with a genetic mutation in the cyclin dependant kinase gene. The mutation leads to a misshapen CDK molecule that will not bind to cyclin molecules. How would this impact the cell cycle of that cell

Answers

Answer:

The mutation leads to a misshapen CDK molecule that will not bind to cyclin molecules. How will this impact the resulting daughter cell? Explain. If cyclin molecules did not bind to CDK, the cell could not progress through the cell cycle.

Explanation:

I could be wrong...if I am I'm very sorry

Which are examples of active transport?
Select all that apply.
exocytosis
phagocytosis
diffusion
pinocytosis

Answers

Answer:

Exocytosis, phagocytosis, and pinocytosis

Explanation:

Active transport is when energy is used to move substances across the cellular membrane.

Exocytosis requires energy to remove materials from the cell; it is active.

Phagocytosis also requires energy; it is active.

Diffusion isn't active because it moves materials down their concentration gradient and therefore it doesn't require energy.

Pinocytosis is a form of endocytosis and requires energy; it is active.

ANSWER FOR BRAINLIEST!

Answers

Answer:

2

Explanation:

mixture
7. Explain the following: All compounds are substances,
but not all substances are compounds."

Answers

Answer:

Below

Explanation:

"All compounds are substances,  but not all substances are compounds."

In simpler terms, let us use an example. Look at the image below.

In a big circle, there are substances. And in the small there are compounds. Since the compounds are inside the big circle, they are compounds, but as you can see, the substances are not inside the compounds so they cannot be considered compounds.

If you think about it, a substance is anything. So would you think a bottle, for instance, is a compound? A compound is a mixture of molecules. And a substance is most likely a combination of atoms, which are elements.

whats one difference between the ways aristotle and theophrastos classified plants?

Answers

Answer:

Aristotle classified animals based on where they lived, while Linnaeus instead used an animal's morphology, evidence from both fossil records and living organisms.

PLS HELP ASAP ILL GIVE BRAINLKEST I GIVE 10 POINTS ITS NOT BB AND Bb

Answers

It’s the third one
BB, Bb, and bb

What is the open space that separates the left and right lung?

Corpus callosum
Septum
*Mediastinum
All of the above

Answers

Answer:

c. Mediastinum

Explanation: is correct. post protected

The human brain communicates with the rest of the body through networks of what?

Answers

Through nerves attached to the brain and to the spinal cord. When an action potential traveling down the axon reaches a terminal button, they secrete a chemical called a neurotransmitter.

The brain communicates with the rest of the body through the spinal cord, which runs from the base of the brain all the way down the back. The spinal cord is made up of lots of nerves, and these nerves branch out into more nerves that travel to every part of the body.

- BRAINLIEST answerer

Through the nerves attached to the spinal cord the brain tells your body to move

Explain how water move from cell to cell in a leaf

Answers

Answer:

By osmosis, water enters the root and travels through the root cells until it reaches the xylem vessels. These canals carry water from the stem to the leaf. Transpiration is the process of removing water from the leaves of plants via evaporation.

Explanation:

Water moves from cell to cell in a leaf through a process called transpiration, facilitated by a combination of cohesion, adhesion, and capillary action in the plant's vascular system.

Transpiration: Transpiration is the process by which water vapor exits the leaf's stomata (tiny openings on the leaf surface) into the surrounding atmosphere. As water vapor evaporates from the cells within the leaf, it creates a lower pressure within the leaf's interior, drawing water molecules from neighboring cells.

Cohesion refers to the attraction between water molecules, causing them to stick together. Adhesion, on the other hand, is the attraction between water molecules and the surfaces of other materials, such as the walls of plant cells and the walls of xylem vessels. These properties work together to create a continuous column of water within the plant's vascular system, allowing water to move upward from the roots to the leaves.

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what is the main factor that separates the biomes?

Answers

Answer:

Terrestrial biomes are distinguished primarily by their predominant vegetation, and are mainly determined by temperature and rainfall. Differences in temperature or precipitation determine the types of plants that grow in a given area .

The main factor that separates the biomes by predominant vegetation, temperature and rainfall.

What is biomes?

Biomass is plant-based material used as fuel to produce heat or electricity. Examples are wood and wood residues, energy crops

Terrestrial biomes are distinguished primarily by their predominant vegetation, and are mainly determined by temperature and rainfall.

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The ______ (the cell body of a neuron) gives rise to branch-like processes called ______, which are the primary sites for receiving signals from other neurons.Multiple choice question.neurosoma, dendrites

Answers

Answer:

Neurosoma

Dendrites

Explanation:

which set of parents did the offspring come from?

Answers

Answer:incian.

Explanation:

A group of students was asked to explain how one organelle in a plant cell directly supports the work or
another organelle to maintain cellular homeostasis. Which of the following students provides the BEST
explanation?
A. Student 1: Lysosomes supply amino acids which ribosomes use to build proteins.
B. Student 2: Vacuoles store genetic information which are used to construct the cell wall.
C. Student 3: Chloroplasts produce simple sugars which mitochondria use to provide energy for the cell.
D. Student 4: Golgi Bodies sort and package lipids which the Endoplasmic Reticulum uses to make proteins.

Answers

Answer:

Letter D. Golgi Bodies sort and package lipids which the Endoplasmic Reticulum uses to make proteins.

The student that provides the best explanation is as follows:

Student 3: Chloroplasts produce simple sugars which mitochondria use to provide energy for the cell.

What is Cellular Homeostasis?

Cellular homeostasis may be defined as the capability of a cell in order to maintain relative stability and function as alterations take place in the internal or external environment.

According to the question, the Lysosomes are the fatal or self destrcutive bags for living cells. Vacuoles store nutrients as well as waste substances of the whole cell in order to prevent cells from being contaminated.

The sorting of important molecules like lipids and proteins is initiated through the endoplasmic reticulum and proceeds to the Golgi bodies through the anterograde pathway.

While the photosynthetic organelle chloroplast captures the radiation energy from the sun and synthesizes simple sugar like glucose which is used by another organelle mitochondria to provide energy for the cell.

Therefore, the correct option for this question is C.

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Please help!

Peter is pushing the rock but the rock is not moving. Choose the statement that describes the force(s) being applied in the image.

a boy pushing a rock, but the rock is not moving

The force of the push is an unbalanced force.
The forces acting on the rock are balanced.
A weaker force of pushing would result in unbalanced forces.
The force of gravity is pulling the rock upwards.

Answers

The answer is that the forces acting on the rock are balanced.

Explanation: Basically since the object is not moving we can consider this system to have a net force of zero (where are forces are balanced). In this problem, the force applied equals the static friction pushing back, and the force of gravity equals the normal force exerted by the ground on the rock.

Answer:2b

Explanation:

Why is ammonification an important process?
a) Bacteria converts ammonia into nitrites and nitrates that plants can use
b) Fungi convert nitrogen in dead plants into ammonium, which converts proteins into ammonia
c) Nitrogen is converted into a usable form through lightning fixation
d) Plant enzymes reduce nitrogen compounds into amino acids

Answers

Answer:

c

Explanation:

po ang tamang sagon po

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