Answer:
In a primary immune response, naive B cells are stimulated by antigen, become activated, and differentiate into antibody-secreting cells that produce antibodies specific for the eliciting antigen.
A secondary immune response is elicited when the same antigen stimulates memory B cells, leading to the production of greater quantities of specific antibodies that are produced in the primary response
Answer:
In a primary immune response, naïve B cells are stimulated by antigen, become activated, and differentiate into antibody-secreting cells that produce antibodies specific for the eliciting antigen.
A secondary immune response is elicited when the same antigen stimulates memory B cells, leading to the production of greater quantities of specific antibodies that are produced in the primary response.
Viruses are able to infect cells because they share a common genetic code and are able to use host cell enzymes to carry out protein synthesis. There are some structures which are
unique to viruses and not found in cells. These include which of the following:
l. Protein capsid
II. Nucleic acids
III. Cell wall
Answer:
Protein capsid are unique to viruses.
Explanation:
Answer:
1 only
Explanation:
How does air pressure affect
breathing?
Answer:
When you inhale, muscles increase the size of your thoracic (chest) cavity and expand your lungs. This increases their volume, so pressure inside the lungs decreases. As a result, outside air rushes into the lungs. That's because a gas always flows from an area of higher to lower pressure.
Answer:
The air pressure in your lungs has to be less than the air outside your lungs, to get your lungs to inflate. This is because air moves from high pressure areas to low pressure areas. During bad weather and at high altitudes the air pressure is lower, making it harder for us to breathe.
Why is concrete hotter than water
Answer:
it is black
Explanation:
Water is clear, so the light will go through the water, but concrete is black which will absorb the heat which will make it hot.
Joseph sets up an experiment growing corn in three containers. Each container has the same amount of
potting soil and fertilizer. Each corn plant is five centimeters (cm) tall. The containers are all placed so thatthey
receive the same amount of light. All of the plants are grown at the same temperature. The plants are
watered once a week: container #1 receives 10 ml of water, container #2 receives 20 ml of water, and
container #3 receives 30 ml of water. Joseph measures the growth of each plant for six weeks.
Which hypothesis is being tested?
The amount of water supplied will affect plant growth.
The temperature will affect plant growth.
The type of fertilizer will affect plant growth.
The amount of light exposure will affect plant growth.
Answer:
The amount of water supplied will affect plant growth is the hypothesis being tested.
Explanation:
Because that is the only variable being altered or changed, every other variable remains consistent. In any experiment what your testing is what's altered between each subject or test group.
identify the part of clayoquot sound that contains the largest continuous transition area
Which is a characteristic of cancer cells
A. controlled cell division
B. Contains multiple genetics changes
C.Cytokinesis stage is skipped
D. cell cyclins function normally
Answer:
A.controlled cell divisionExplanation:
Thankyou
what stage of mitosis does the nuclear membrane disapear
Answer:
La transición de interfase a mitosis es la profase. En esta etapa ocurren los siguientes eventos: la cromatina se condensa para formar cromosomas, se forma el huso mitótico y desaparece la envoltura nuclear.
Explanation:
Al final de la profase (profase tardía) desaparece la membrana nuclear quedando los cromosomas dispersos en el citoplasma.
Biotic components of an ecosystem are alive.
-True
-False
Answer:
True!
Explanation:
Abiotic means they are not alive, such as rocks, water, and sunlight!
Hope this helps and don't forget to follow!
______________________ used to identify an unknown organism, a series of questions that lead you to the names of the organism.
Which of the following statements is true about viruses?
Viruses contain very small cells
Viruses never eat any food
Viruses can reproduce themselves quickly
Viruses have hyphae that help them take up water
Explanation:
viruses may contain very small cells viruses can produce them quickly when they get a mode of transmission viruses have hyphae BUT viruses never eat any food so second statement is true....
please answer ill give brainly
A.0.15mm
Explanation:
carryonlearningWhat is responsible for the apparent motion of the Moon in the sky from East to West?
es 0)
A)
The rotation of Earth about its axis
B)
The revolution of Earth around the Sun
C
The rotation of the Moon about its axis
D)
The revolution of the Moon around Earth
Good morning guys , I have a question : why is height not controlled by one gene ?
Answer:
Because the gene is an inheritance of our ancestors, weight is something you gain or lose depending on how balance your health is. The reason why our weight can't be controlled by the gene is because the gene has different traits coming from each parents(50%) and grandparents(25%), and either parents has different weight, so it will be hard for the gene to capture one specific weight from both sides.
Answer:
Height and other similar features are controlled not just by one gene, but rather, by multiple (often many) genes that each make a small contribution to the overall outcome. This inheritance pattern is sometimes called polygenic inheritance
plz mark as brainliest
What is the ecological term for an organism that converts sunlight into chemical energy?
a. Herbivore
b. Detrivore
c. Carnivore
d. Producer
Answer:
Producer
Explanation:
Describe the process of binary fission shown in the diagram. Then answer the questions.
Answer:
Explanation:
Origin of replication opens and DNA replication begins
Cells elongate, origins move towards cell ends as DNA is copied.
Septum forms down the middle of the cell
Cell pinches in two. Then we now have two bacteria
Food and territory are balancing
factors in an ecosystem. What type
of phenomena balance these
factors?
A. anthropogenic
B. unnatural
C. natural
D. reproductive
Answer:
The correct answer is C. Natural phenomena.
Explanation:
Food and territory are two factors that clearly influence the development of life within an ecosystem: the abundance or lack of these factors will clearly be decisive in the normal development of life within the ecosystem, that is, the greater the territory and food, the better the quality of life of the living beings in said ecosystem.
In turn, food and territory are affected by various natural phenomena, which condition the abundance or lack of these factors: thus, phenomena such as earthquakes, floods, fires, etc., cause the territory and food to fluctuate as soon as to their quantities.
Answer:
C. natural
Explanation:
Hope this helps
Explain how cell division is important for asexual reproduction.
Answer:
The mitosis helps the multiplication of the asexuallyreproducing organisms. by repeated mitosis division of cells, the somatic cells increase in number. the cells are differentiated into different kinds of PF tissues for the body of organisms.
Explanation:
Hope this helped Mark BRAINLIEST!!!
Can somebody please answer this quickly?pleaseeeeee
HELP I AM IN A TEST! I WILL MARK AS BRAINLIEST IF CORRECT!
Which of the following statements is true?
Fusion reactions split hydrogen nuclei apart.
Fission reactions release more energy than fusion reactions.
Nuclear power plants change electricity into nuclear energy.
U-235 is an isotope of uranium.
Answer:
Fission occurs when a neutron slams into a larger atom, forcing it to excite and spilt into two smaller atoms—also known as fission products. Additional neutrons are also released that can initiate a chain reaction.
When each atom splits, a tremendous amount of energy is released.
Uranium and plutonium are most commonly used for fission reactions in nuclear power reactors because they are easy to initiate and control.
The energy released by fission in these reactors heats water into steam. The steam is used to spin a turbine to produce carbon-free electricity.
Explanation:none
Answer:
Nuclear power plants change electricity into nuclear energy.
Explanation:
i need to find the parent genotypes and the all possible gametes for each parent
Answer:
6 of themmmmmmmmmmmmmmmm I thinkkk
Complete the following sentence.
The more blank structures two species have, the more closely related they may be. the more structures two species have, the more closely related they may be
Answer: Homologous
Explanation: The more Homologous structures two species have, the more closely related they may be.
Pls help it’s for science
Answer:
i don't see ur question
Explanation:
have a good day...
Answer:
How may we help?
Explanation:
Q. What are peristaltic movements ?
➜ The contraction and expansion movements of the walls of food pipe are called peristaltic movements.
This movement pushes the food in forward direction in the alimentary canal.helpp please will mark brainliest
Compare the sugar-phosphate arrangement in the backbone of the DNA from the plant, the manmal and the bacterium. Are there any differences?
Answer:
No, there are no differences
Explanation:
Deoxyribonucleic acid (DNA) is a molecule composed of two polynucleotide chains that interact together in order to form a double helix. This molecule (DNA) carries the genetic instructions that make each species unique. In DNA, each polynucleotide chain is composed of nucleotide monomers: a nucleotide is composed of a deoxyribose sugar attached to a phosphate group and one nitrogen-containing base (i.e., adenine, thymine, guanine and cytosine). This basic structure is the same among different species, and, therefore, genetic differences between different groups (in this case, animals, plants, and bacteria) are caused by differences in the nucleotide-base sequences of their DNA molecules.
What can you do to prevent the loss of a chick in an egg in the incubator
Answer: control the humidity
Explanation:
Humidity is carefully controlled to prevent unnecessary loss of egg moisture.
Which of the following increases transpiration?
A air around the leaf with high humidity.
B air molecules around the leaf with kess kinetic energy.
C an obsence of light falling on the leaf.
D water molecules in the leaf with more kinetic energy.
GIVING BRAINLIEST!!!
Which of the following describes the mountain environment?
A) Dry and hot with few trees and sandy soil
B) Open land covered with grass and flowers
C) Temperatures decrease at higher elevations
D) Thick layer of trees and branches called a canopy
Answer:
the answer is C.
Explanation:
higher elevations make the tempature decrease
Answer its c
Explanation:
i did the test and i ben hiking so ya have a nice day
What is the lowest level of organization of the biosphere, or the one that
has the fewest members?
Answer:
Organism
Explanation:
the answer is Organisms
What does the slope of this graph equal?
Answer:
speed
Explanation: