Semi-permeability / Selective-permeability is the property that allows only some substances in and out of a cell. The cell membrane of the cell is semi-permeable.
______
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Select the most accurate description of how antibodies are produced. Select one: a. cytotoxic T cells stimulated by helper T cells b. B cells that differentiate to form plasma cells c. helper T cells stimulated by various cytokines d. in the red bone marrow e. natural killer cells as they lyse cancer cells
it is the red bone marrow that produced anti bodies
The most accurate description of how antibodies are produced is B cells that differentiate to form plasma cells
Option (b ) is correct.
The most accurate description of how antibodies are produced is through B cells that differentiate to form plasma cells. B cells are a type of white blood cell that plays a crucial role in the adaptive immune response. When a B cell encounters an antigen (a foreign substance, such as a virus or bacteria), it recognizes and binds to it. This binding activates the B cell, leading to its differentiation into plasma cells.
Plasma cells are specialized B cells that secrete large amounts of antibodies, also known as immunoglobulins. These antibodies are specific to the antigen that triggered their production. Antibodies help neutralize or eliminate the antigen by binding to it and marking it for destruction by other components of the immune system.
Option a is incorrect because cytotoxic T cells are involved in directly attacking and killing infected cells, not producing antibodies.
Option c is incorrect because helper T cells play a role in activating B cells and other immune cells, but they do not directly produce antibodies.
Option d is incorrect because the red bone marrow is the site where various blood cells, including B cells, are produced, but it is not directly involved in antibody production.
Option e is incorrect because natural killer cells are a type of immune cell that is responsible for detecting and destroying infected or cancerous cells through a process called lysis. They are not involved in antibody production.
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17. Choose the answer that best describes the geologic process that contributes to the formation of fault-block mountains.
A)The Earth's crust is pushed together which tilts layers of rock on their side producing steep scarps.
B)The Earth's crust is pulled apart creating deep folds and then pushed together generating steep scarps.
C)The Earth's crust is pushed together which forces up blocks vertically creating steep scarps.
D)The Earth's crust stretched from swelling underneath and vertical movement by blocks generates steep scarps.
Answer:
B.
Explanation:
Have a great day! And good luck
Equilibrium means which of the following to you?
A) a balance of temperatures
B) a balance of solution concentration
C)a balance of pH
D) all of the above
Khalil is an investment underwriter who researches new funds to see if they will be profitable without causing a huge risk to the company’s investors. What skill would be helpful to Khalil in his career?
A.
being outgoing and good at public speaking
B.
having artistic tendencies and liking to create things
C.
being careful when making decisions
D.
liking to work with his hands
Answer:
Being careful when making decisions
Explanation:
i took the test trust me
The Answer is: C. being careful when making decisions
What is the big bang theory?
NOT THE TV SHOW. IT IS IN BIOLOGY.
Answer:
Simply put, it says the universe started with an infinitely hot and dense single point that inflated and stretched (and blew up technically) — first at unimaginable speeds, and then at a more measurable rate and over the next 13.8 billion years, became the (continuously) expanding space in the present
two different versions of the same gene are called _____. two different versions of the same chromosome are called _______.
Answer:
alleles
Explanation:
What part of the nervous system is the main control and integrative center of the autonomic nervous system? cerebrum hypothalamus medulla oblongata thalamus
Answer:
option b) Hypothalamus
why do eukaryotic cells have multiple origins of replication?
Answer:
Because eukaryotic chromosomes are linear and much larger than prokaryotic ones
Explanation:
there are multiple origins of replication in the eukaryotic genome during replication.
the five levels of organization in the environment, from first to fifth level are
organism_population_community_ecosystem_biospere
Which of the following do NOT spawn or breed in freshwater and spends most of their lives in the ocean?
A) Chinook salmon
B) tiger sharks
C) European eel
D) striped bass
Answer:
Tiger shark
Explanation:
Answer:
Tiger Sharks
Explanation:
Chinook salmon spend most their time in freshwater and breed in freshwater.
European eels spend time in both fresh water and salt water (ocean). They breed in salt water.
Striped bass spend time in fresh and salt water, breed in fresh water.
Tiger sharks is the answer, because they do not breed or spawn in fresh water and they live in the ocean.
Consider how your body systems interact when you train for your favorite sport. How does physical exertion impact your heart,lung,and kidneys
Answer:
Moderate- to vigorous-intensity physical exercise, when performed on a regular basis, helps to strengthen your heart muscle. Improved blood flow to the lungs and throughout the body is achieved as a result of this. Increased circulation to your muscles and increased oxygen levels in your blood as a consequence of this.
Explanation:
Hope it helps:)
What are some major challenges facing microbiology today and explain one
Answer: Maintaining Compliance Levels in Microbiology Programs. ...
Promoting Advanced Aseptic Processing Technologies Within Your Organizations. ...
Increasing Microbial Testing Productivity, Flexibility, and Cost Effectiveness. ...
Implementing Rapid Microbial Methods.
Explanation:
The major importance of medical microbiology is that it helps in the identification, isolation, diagnosis and treatment of pathogenic microorganisms and also produces beneficial organisms such as yeasts and some antibiotics. Biomedical research derives from many areas of life and physical sciences, including biology
Light energy that is captured in photosynthesis is converted to ______ energy stored in the chemical bonds of molecules.
Answer:
Light energy that is captured in photosynthesis is converted to chemical energy stored in the chemical bonds of molecules.
Light energy that is captured in photosynthesis is converted to chemical energy stored in the chemical bonds of molecules.
What is photosynthesis?Photosynthesis is essential to most life on Earth. Plants, algae, and some types of bacteria carry out the process by capturing solar energy to create oxygen (O2) and chemical energy stored in glucose (a sugar). Consequently, herbivores get this energy from consuming plants, and carnivores get it from eating herbivores.
Chloroplasts, which are tiny organelles found inside plant cells, are there to store solar energy. Chlorophyll, a light-absorbing pigment found in the thylakoid membranes of the chloroplast, is what gives plants their green hue. Chlorophyll absorbs energy from blue and red light waves during photosynthesis while reflecting green light waves, giving the appearance of a green plant.
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Carbon monoxide is a poisonous gas because it competes with the gas that binds to hemoglobin in red blood cells. Which of the following would be most directly affected by carbon monoxide poisoning?
A. Fat digestion
B. Cellular respiration
C. Synthesis of proteins
D. Breakdown of wastes
how did the water and the sugar solution affect the length and mass of the potato cylinders? Use your understanding of osmosis to explain your findings
Answer:
The potato cylinders placed in strong sucrose solutions will lose mass / length as water will have moved from an area of high concentration ( inside the potato cells ) to an area of lower concentration ( outside the potato cells ).
Explanation:
The cell membranes in a potato cylinder are partially permeable; this means that only particles that are the right size can diffuse through, basically if the particle is too big it will not fit. Osmosis occurs when there is a higher concentration of particles on one side of the cell membrane than on the other. This will lead to the water particles diffusing from an area of higher concentration to an area of lower concentration. There is a higher concentration of water on the left side of the membrane. This means that the diffusion will cause the water particles to move from the left side to right side of the membrane.
A(n) operonis a stretch of DNA consisting of an operator, a promoter, and genes for a related set of proteins, usually making up an entire metabolic pathway.
Answer:
operon
Explanation:
A(n) operonis a stretch of DNA consisting of an operator, a promoter, and genes for a related set of proteins, usually making up an entire metabolic pathway.
Someone plz help me :(
A. Cell
B. Organ
C. Organ system
D. Organism
Answer:
The heart is an Organ
Answer:
organ is the answer if I believe so.
in a male mammal, every germ cell that undergoes meiosis in the production of gametes gives rise to __________ sperm.
Answer:
Your answer is 4. Hope this helps you. Have a great day! :)
Explanation:
Which of these processes was able to occur in Earth’s early lithosphere before living organisms existed?
Answer:
It would be Erosion of soil.
Explanation:
Erosion of soil was able to occur in earth early lithosphere before living beings existed.
Answer: Erosion of soil
Explanation:
nova: hunting the elements crossword puzzle
this elements does not rust, and is rare, yellow and shiny.
This elements does not rust, and is rare, yellow and shiny.
What are Elements?A chemical element is a species of atoms, including the pure substance made entirely of that species, that have a specific number of protons in their nuclei.
Chemical elements, in contrast to chemical compounds, cannot be reduced by any chemical process into simpler molecules. An element's atomic number, denoted by the symbol Z, is the attribute that distinguishes it from other elements; all atoms with the same atomic number belong to the same element.
Chemical elements make up the majority of the universe's baryonic stuff (among rare exceptions are neutron stars). Atoms are rearranged into new compounds linked together by chemical bonds when various elements undergo chemical reactions.
Therefore, This elements does not rust, and is rare, yellow and shiny.
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What layer of the Earth's atmosphere is where most meteors burn up upon entry?
Answer:
Mesophere
Explanation:
The Mesosphere
Considered one of the coldest places on Earth, the average temperature is around -120°F. This layer is where most meteors burn up upon entering Earth's atmosphere and is the highest elevation at which a cloud can form.
Question 10 of 10
How much of Earth is covered in water?
O A. 95%
B. 50%
O C. 25%
O D. 75%
Answer:
75%
Explanation:
4. What does alternation of generation mean?
A. a plant has sexual plants only
B. a plant has both asexual and sexual plants
C. a plant has asexual plants only
D.a plant has characteristics skip a generation
What is the nature of soil present in horizon '1'.
Answer:
Well since, O horizon is thin in some soils, thick in others, and not present at all in others.
Explanation:
how is regolith different from soil? PLEASE HELP ME. NO LINKS NO LINKS!!!!!!
what happens to the oxygen that is used in cellular respiration?
Answer:
The cell uses oxygen to break down sugar. this produces carbon dioxide and energy is released.
Suppose the environment changes. For example:
A. The rainfall decreases.
B. A competing species (goats) moves in that eats the same kind of grass.
C. Small coyotes arrive with a fondness for baby sheep.
Think of some small mutations that might help the sheep population survive in each of these new circumstances.
Your response Mutation A:
Why it might help:
Your response Mutation B:
Why it might help:
Your response Mutation C:
Why it might help:
Answer:
A competing species (goats) moves in that eats the same kind of grass
Explanation:
because its suppose the environment changes =)
Rank the following according to the number of carbons (Highest number on top and lowest on the bottom)
1 PGA
1 RuBP
1 CO2
1 water
1 glucose
Answer:
ugh girlly I wish I could help you sorry luv btw cute pfp<3
Explanation:
-xoxo
Temperature and pH can affect how an enzyme works because
1: They can cause the enzyme to be destroyed
2: They can destroy the substrate
3: They can change the shape of the active site, causing it not to fit with its substrate
4: They can change the shape of the substrate causing it not to fit with its active site
Answer:
4 I believe
Explanation:
this usually occurs when pH and temperature come into affect.
which sequence accurately describes the path traveled by a new protein from when it first starts to be translated to its release from the cell?
The sequential pathway of a protein from it first starts to be translated to its release from the cell is cytosol > ER > Golgi > vesicle > plasma membrane > external environment. These proteins are synthesized in the ribosomes.
The exported proteins are synthesized (i.e., translated) in the ribosomes of the cytosol that bound to the endoplasmic reticulum in order to enter into the endomembrane system.
Subsequently, extracellular proteins undergo processing in the Golgi apparatus, which is connected to the rough RE by transport vesicles.
Finally, these proteins pass through transport vesicles in order to be exported from the cell by endocytosis.
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