Answer:Dendritic cells Explanation:
T- cells is not a antigen presenting cell.
What are T-cells?"T cells are part of the immune system and develop from stem cells in the bone marrow."" They help protect the body from infection and may help fight cancer."What is antigen presenting cells?"An antigen-presenting cell (APC) is an immune cell that detects, engulfs, and informs the adaptive immune response about an infection."It includes macrophages, dendritic cells and B- cells.Hence, the answer is T-cells.
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What type of air mass forms over Nashville TN
Five air masses affect the United States during the course of a typical year: continental polar, continental arctic, continental tropical, maritime polar, and maritime tropical. Continental air masses are characterized by dry air near the surface while maritime air masses are moist.
Which the following takes the most time?
Meiotic prophase II
Mitotic prophase II
Meiotic prophase I
Mitotic prophase I
Option D.
The time required then for the complete process of mitotic cell division would lie within the following limits: Prophase, 30 to 60 minutes; metaphase, 2 to 10 minutes; anaphase 2 to 3 minutes; telophase 3 to 12 minutes and the reconstruction period from 30 t'o 120 minutes: total 70 to 180 minutes.
Meiotic prophase I takes more time than other processes of mitosis or meiosis.
What are the phases of meiosis?Meiosis is a type of reductional division as the chromosome number reduces to half in this type of division. It results in the formation of haploid cells. The process of meiosis takes place in germ cells and gives rise to gametes for sexual reproduction. Each process of meiosis produces four haploid cells.
Meiosis is categorized as meiosis I and meiosis II. Meiosis I gives rise to haploid cells. The prophase I of meiosis I have 5 further stages. These are leptotene, zygotene, pachytene, diplotene and diakinesis.
Meiosis II is comparatively simple and is very much like Mitotic division, except the cells undergoing division are the haploid cells produced by meiosis I. Hence, Meiotic prophase II also takes less time than Meiotic prophase I.
Therefore, the process that takes the most amount of time is the Meiotic prophase I.
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need this answer quick please now thanks
Species that all originate from a common line on a tree share what?
Answer:
genes or DNA, Or ancestory
Explanation:
What is embedded in the phospholipid bilayer that helps in the movement of larger molecules ?
A.Channel/Transport proteins
B.Salt
C.Water
D.Fats
Answer:
[tex]\boxed {\boxed {\sf A. \ Channel/Transport \ proteins}}[/tex]
Explanation:
The phospholipid bilayer is also known as the cell membrane. It covers cells and regulates the transport of substances. Certain ones can pass and others cannot, depending on certain factors like size and polarity.
Smaller substances tend to diffuse or move across the membrane quite easily. However, larger molecules have a much harder time. Many depend on special proteins embedded in the membrane. These are called transport proteins and they form a channel so large molecules can still move in or out of the cell.
So, salt, water, and fats do not contribute to the movement of larger molecules, but channel or transport proteins do and choice A is correct.
NO LINKS PLEASE
Match the section of the brain that governs each action.
remember:
Choose...
think:
Choose...
controls reflexes:
Choose...
coordinates muscles:
Choose...
reason:
Choose...
involuntary muscle control:
Choose...
interprets sensory information:
Choose...
connects brain to spinal cord:
Choose...
controls sense of balance:
Choose...
body voluntary muscle control:
Choose...
controls heartbeat:
Choose...
options:medulla cerebellum and cerebrum
If a 100-pound person played tug of war with a 50-pound dog , how light difference forces affect the results?
Answer: APPARENTLY YOU CAN battle a lion at the San Antonio Zoo. OK, it's not that kind of battle—it's a tug of war battle. There is a thick rope passing through a hole. On one end, there is a lion cub. On the other end of the rope there could be three professional WWE wrestlers. Who wins? Well, the wrestlers don't win. But there is also some physics here.
It's all about friction
A typical tug of war isn't really about strength—it's about friction. It doesn't matter how strong you are if you don't have enough friction to keep yourself from sliding. Let me show you. Here is a force diagram for two people in a tug of war.
Each puller (person pulling on the rope) has essentially four forces acting on them. There is the downward weight which is balanced by the upward push of the ground. Since the person pulls on the rope, the rope pulls on the person in the opposite direction (this because of the two-ended nature of forces). Finally, there is the frictional force between the person and the ground. If no one is "winning," all these forces add up to zero and the person stays at rest. In order to start moving in the winning direction, the frictional force must be greater than the force from the rope.
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This "two-ended" nature of forces means that forces come in pairs and are an interaction between two objects. It doesn't matter how hard the person on the left pulls on the rope, this same rope pulls on that person. So if you were to increase your pull to 1,000 Newtons—that same rope pulls on both people. So the key is the other force acting in the horizontal direction: friction.
The maximum frictional force depends on two things. It depends on the types of surfaces interacting (maybe it's the rubber on a shoe interacting with a concrete floor) where some surfaces just have more friction than others. You really can't change this part in a tug of war. The friction force also depends on the normal force. The normal force is the force with which the two surfaces are pushed together. In the case of this simple tug of war above, the ground pushes up with a force equal to the gravitational weight of the person. This means that heavier people will have a greater frictional force acting to help win a tug of war.
Oh, note that in the human vs. lion tug of war the humans are on a different surface than the lion. Who has the advantage? It's probably the lion since she could have uneven ground that would allow her to use more than just plain old sliding friction.
So, it's really about mass
If you have two contestants on equal ground with similar friction materials, mass matters. If the person on the left has half the mass of the person on the right, they will have half the friction. This means that it's pretty tough to beat a heavier puller.
What about the lion? This looks like a young lion—she could have a mass of about 120 kg (up to maybe 182 kg). A typical massive human wrestler might have a mass of around 90 to 100 kg. Three humans will probably have more mass than a single female lion. Probably. The humans should have an advantage in the mass.
It's also about rope friction
Wait! This isn't a normal tug of war. The rope isn't straight. Did you notice that? This can make a big difference in that it can add another frictional force into play. Let me show you how this works with a diagram of the rope as seen from the top where it passes through the glass.
Explanation:
How does the electromagnetic spectrum arrange different types of radiation?
a. By color
b. By how fast they go
c. By how much energy they carry
Answer: c i think
Explanation:
A fossil contains 1/16 of the carbon -14 it began with. How old is the fossil?
Answer:
1/30
................
Help help please!!!!
Answer:
1. Esophagus
2. Small Intestine
Where does the light and thermal energy given off when burns food come from?
A Light and thermal energy given off from burning food comes from the lighter used to light the food.
B. Light and thermal energy given off from burning food is converted from the chemical energy stored in
the food.
C. Light and thermal energy given off from burning food comes from oxygen.
D. Light and thermal energy given off from burning is created when food burns.
3. Why do two grams of fat provide a different amount of energy than two grams of carbohydrate?
Answer: B
Explanation: Because Light and thermal are two different things of heat and if one of the cores of heat gets any cooler than it is than it may burn out and there wwill no longer be heat so the food brin come in at the middle (Core) of the heat and just like a microwave it had different heats but its core of the heat stays the excact same
Just need to identify this stuff
Answer:
ok!
Explanation:
Organic debris- PP
Aquatic plants- PP
Aquatic insects- primary consumer
Crayfish- primary consumer
Larger fish- secondary consumer
Small fish- secondary consumer
Osprey- tertiary consumer
Bald eagle- seconday consumer
Seagull- secondary consumer
Rodent- primary consumer
Seal- tertiary consumer
Nothern Harriet- secondary consumer
Plant seeds and roots- PP
hope this helps do telll me if any of them r wrong! :D
ANSWER ASAP PLZ. THANK YOUUUUU
Answer:
b
Explanation:
i took the test
Answer:
if the shorter plants are the recessive it would be tt x tt of they are the dominant, it would be TT x Tt.
As a responsible student, what practical thing can you do to contribute to the global effort against global warming?
a. using plastic cups in experiments
b. using a car instead of a bike to go to school
c. turning the lights off when not in use
d. washing clothes only in the afternoon
e. taking a shower only in the morning
Answer:
Its B(and c if it you could answer 2 )
Explanation:
a. Sure your using plastic less but still you could have avoided the use of cups in all.
b. (we already know this is the answer but let me explain) If you use a car of course it would pollute the air so if you use a bike you would both be exercising and polluting the air less.
c. It would cocerve energy so the main reason i asked if it was multi answer.
d.what would that do, your still using water?
e. same answer as last explination.
1. Why does the immune system make memory cells?
Answer:
The reason the immune system makes memory cells is to help the body recognize a sickness they have experienced before and react to it.
Explanation:
Ozone in the stratosphere is a form of air pollution,
True or False?
Adaptation, Natural Selection, and Evolution: Question 2
Complete the sentence.
variation includes differences in genes, whereas
variation includes differences in traits.
Select one
O
Allole genetic
Physical genetic
ооо
Genotie pliysical
Genti alle
Answer:
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Which of the following stars is the brightest?
Sun
Rigel
Pollux
Procyon B
Rigel
is the answer of your question
hope it is helpful to you
How are tropical rain forests and temperate forests different?
There are two types of rainforests, tropical and temperate. Tropical rainforests are found closer to the equator where it is warm. Temperate rainforests are found near the cooler coastal areas further north or south of the equator. The tropical rainforest is a hot, moist biome where it rains all year long.
known as D
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In genetics, to calculate the probability of inheritance we use the same letter for the same allele and use upper & lower case letters to show dominant and recessive. Dominant alleles are represented by ____________ while recessive alleles are represented by ____________
A. Upper-case letter, lower-case letter
B. lower-case letter, Upper-case letter
Answer:
A. Upper case, lower case
Explanation:
Dominant alleles are represented by an upper case letter
Recessive alleles are represented by a lower case letter
The main part of a cell that maintains homeostasis is the ______________.
A. The nucleus
B. Cell membrane
C. The head
D. The cytoplasm
Answer:
B. Cell membrane
Explanation:
What is needed for cellular respiration to occur?
Select one:
a.
Oxygen and water
b.
Food and carbon dioxide
c.
Food and oxygen
Answer:
B
Explanation:
B
The diagram below represents two flies.They look similar but they can not sexually reproduce with each other and produce offspring. This means that the two flies most likely belong to
(1) the same kingdom and same species
(2) the same kingdom, but different species
3) different kingdoms, but same species
(4) different kingdoms and different species (I can't put the picture my bad)
Answer:
(2) the same kingdom, but different species
Explanation:
I believe that they are from the same kingdom (Animalia) but are different species, which causes them to not be able to breed with one another.
Which factors increase the heat absorbed by a land surface? Select the two correct answers.
A. becoming wetter
B. becoming smoother
C. removing plants
D. removing show
E. becoming paler
The factors associated with removing plants and removing snow increase the heat absorbed by a land surface.
What is heat land surface?The expression heat land surface makes reference to the radiation absorbed by the Earth during the day.
This solar radiation increases the amount of thermal energy present in the ground and its temperature.
In conclusion, the factors associated with removing plants and removing snow increase the heat absorbed by a land surface.
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NO ONE
literally no one.....
DAD BE LIKE:
OK *THUMBSUP*
The three general requirements for resisting disease are:
eating foods that will give you the proper nutrition
exercising
eating foods high in calories
getting plenty of rest
taking lots of vitamins
Answer: eating foods that will give you the proper nutrition
exercising
getting plenty of rest
Explanation:
3 points
Because plants perform photosynthesis, they play an important role in
regulating the amount of CO2 in the earth's atmosphere.
Which of these is a weakened or dead form of a pathogen that causes an immune response? A antibody b vaccine c antigen d inflammation Question 11 (1 point)
Answer:
B. Vaccine
Explanation:
Vaccines contain weakened forms of a virus or bacteria, but is still strong enough to trigger an immune response. Therefore, the answer is B.
What does the Coriolis effect directly impact?
how does sexual reproduction increase variation within a species
Explanation:
The process of sexual reproduction introduces variation into the species because the alleles that the mother and the father carry are mixed together in the offspring. ... A mate must be found, the egg must be fertilised by sperm, and then the offspring develop.
Answer:
because it increases the gene pool
Explanation:
So sexual reproduction requires two organisms, a male and a female, and their offspring has a combination of both of the parents, this varies the gene pool. Then the offspring creates more offspring, further varying the gene pool.
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