A cell sends messages to itself via Autocrine Signaling
Autocrine signaling refers to the generation and extracellular secretion of a given chemical messenger that interacts with receptors present in the plasma membrane of the same target cell, thereby initiating a signal transduction pathway.An example of an autocrine signaling pathway is the production and secretion of the cytokine interleukin-1 (IL-1) pro-inflammatory cytokine in monocytes.Moreover, paracrine signaling is a type of signaling that occurs between local cells.Endocrine signaling is a type of signaling pathway that occurs between distant cells. This type of signaling is mediated by chemical messengers called 'hormones' which are released from endocrine cells and travel throughout the body.Learn more in:
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Which is an example of molecules
that can fit through the small
spaces of the cell membrane?
A. glucose
B. oxygen
C. amino acids
D. fats
Explanation:
Oxygen is the answer. (option B)
Which of the following phrases best describes a solvent?
A) can be dissolved by the solute
B) has a high concentration of solutes
C) usually a sugar or protein
D) present in a greater concentration that solutes
A solvent is a substance present in a greater concentration than solutes (Option D).
A solvent is a substance (usually a liquid) that dissolves another substance/s in order to form a solution.The solvent has the ability to dissolve other substances present in the solution that are referred to as solutes.Some of the most common solvents include water, ethanol and methanol.In conclusion, a solvent is a substance present in a greater concentration than solutes (Option D is correct).
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What is the control group??
Which would be least helpful in reducing indoor pollution?
Answer:
A fan probably would be least helpful because it would spread the dust, hair etc, around rather than removing it.
Explanation:
1. Your friend needs quick energy! What kind of biomoleciste should he eat a lot of? 2. Why? Be specific, what do your cells do with this biomolecule that would help him run? 3. Name two kinds of foods have high amounts of this biomolecule.
Nucleic Acids contains phosphorus
O True
O False
Answer:
True
Explanation:
Phosphorus is the only element that is identified with nucleic acids.
Nuclear fusion produces _____________ nuclei.
Answer:
it produces heavier nucleus.
Explanation:
in nuclear fusion two light nuclei fuse together to form a heavier nucleus.
HELP THIS IS 100 POINTS
In a scientific experiment, the one variable that is purposely changed to
test a hypothesis is called the:
the manipulated variable (also called the independent variable)
Mr. Doe wanted to perform an experiment to determine if doing a class review before a test would increase test scores. Mr. Doe normally does not review. To perform this experiment, Mr. Doe reviewed material with 2nd period before a test and did not review with 3rd period. After grading papers, he found that 2nd period had an average grade of 93 and 3rd period had an average grade of 72. He determined that reviewing before a test might increase test scores. 2. Which of the following is the control group?
Answer:
3rd Period
Explanation:
2nd period reviewed material with Mr. Doe
3rd period did NOT reviewed material with Mr. Doe
Experimental group is the group being affected.
Control group is the group not being affected.
Based on this image of a
container with a
selectively permeable
membrane, which way
will the water move if the
solute concentration is
higher on the left than
the right?
A. Water will move from right to left
to get the concentration of solutes
at equilibrium.
B. Water will move from left to right
to get the concentration of solutes
at equilibrium
C. The water will not move because
equilibrium is not necessary.
Answer:
(A):Water will move from right to left to get the concentration of solute at equillibrium.
You are building a birdhouse when you cut your finger. Predict which body systems would be immediately involved with your
reaction to the cut.
Answer:
A.
Explanation:
These systems will be involved!
Hope this helps, have a great day.
The nervous system, circulatory system, and integumentary system are body systems involved immediately when you cut a finger.
The integumentary system is the system that groups the natural covering of an organism, for example:
SkinBarkShellThe nervous system is in charge of electrical signals. These signals are those produced by the senses such as taste, smell, sight. Also, they are responsible for sending signals of pain, satisfaction, pleasure, and others to the brain.
The circulatory system is the system in which blood is transported throughout the body for oxygenating and energizing the entire body.
When someone cuts themselves they feel pain (nervous system), blood comes out (circulatory system) and their skin opens and some of its lower layers (integumentary system) can be seen. Therefore, the correct answer is A.
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What about cellulose makes it ideal for structural support?
Explanation:
Cellulose is ideal as a structural material which give its fibers give strength and toughness to a plant's leaves, roots, and stems.
if my answer helps you than mark me as brainliest
explain the working method of tongue
Explanation:
Chewing, grinding, pressing, salivating
When we chew, the tongue and the cheeks work together to constantly move the food between the teeth so that it can be chewed. The tongue presses the crushed food against the palate and moves this bolus, which is then ready to be swallowed, to the throat.
what does social comparison theory propose?
That people have an innate drive to evaluate themselves, often in comparison to others.
List all the ways you can think of that carbon passes from the biosphere to the lithosphere
Answer:
Carbon is stored on our planet in the following major sinks (1) as organic molecules in living and dead organisms found in the biosphere; (2) as the gas carbon dioxide in the atmosphere; (3) as organic matter in soils;
HELP////What is the purpose of an enzyme?
A. To decrease the activation energy of a reaction to make it occur more slowly.
B. To increase the activation energy of a reaction to make it occur more slowly.
C. To decrease the activation energy of a reaction to make it occur more quickly.
D. To increase the activation energy of a reaction to make it occur more quickly.
Answer:
Una enzima es un catalizador biológico. ... El objetivo de un catalizador es aumentar la velocidad con que ocurre una reacción. Hay muchas, muchas enzimas que son codificadas por el genoma para producir proteínas o ARN que aceleran las reacciones químicas y hacen varios miles de funciones diferentes dentro de una célula.
Explanation:
L -- A
Answer:
To increase the activation energy of a reaction to make it occur more quickly.
Explanation:
Enzymes create chemical reactions in the body. They actually speed up the rate of a chemical reaction to help support life. The enzymes in your body help to perform very important tasks. These include building muscle, destroying toxins, and breaking down food particles during digestion.
please help
What's the role/function of each "organelle" in the cell?
DNA
Mitochondria
Cell Membrane
Nucleus
Chloroplasts
Cell Wall
Large Vacuole
Answer:
DNA- contains the instructions needed for an organism to develop, survive and reproduce.
Mitochondria- generate most of the chemical energy needed to power the cell's biochemical reactions.
Cell membrane (Animal Cells)- protects and organize cells.
Nucleus- Controls and regulates all cell functions.
Chloroplasts (Plant Cells)- Allows photosynthesis to occur.
Cell Wall (Plant Cells)- Protects the cell.
Large Vacuole (Plant Cells)- providing structural support in plant cells. Also stores nutrients.
Explanation:
Its a bit.. complicated to explain since when learning this all my teacher did was just tell me everything and make me memorize this.
Just a easy question .....
I want to see who can answer the faster and brainiest
Differences between duck and peacock
(Please don't spam ) Answer quickly please
Answer:
Duck is smaller whereas peacocks are big
Duck has black\brown features whereas peacocks have colorful feathers.
Pump jacks use upward force and pressure to slowly move oil up a drill shaft. Which statement best describes an environmental consequence of this process?
O Soil is removed by the force and pressure of the drilling process.
High salinity of wastewater reduces soil fertility and growth of vegetation.
Wastewater is contaminated with oil and becomes sludge in landfills.
O Heavy metals are released into surrounding soil, poisoning local vegetation.
The main consequence of this process is that the soil is removed by the force and pressure of the drilling.
For the extraction of oil from the land, the vegetation is removed that destroys the habitat of many organisms as well as the degradation of soil occurs due to the force and pressure of the drilling machines.
In water, the aquatic organisms including plants and animals are adversely affected due to this process of extraction so we can learn that there are many consequences of extracting oil from the soil to the surrounding environment..
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Answer:
Wastewater is contaminated with oil and becomes sludge in landfills.
Explanation:
delivers blood to the heart
Answer:
veins
Explanation:
Arteries carry blood away from the heart and veins carry blood back to the heart.
The orbital radius of Venus is 0.72 AU. What is this distance in kilometers? (One AU is about 150 million kilometers.)
I need to write my hypothesis based on this question
Do plants need sunlight to grow
My independent variable is the amount of sunlight each plant gets
Dependant variable is the growth of the plant
Everything else are controlled same
Answer:
If a plant gets more sunlight, then it will grow more because sunlight is beneficial and necessary for plant growth.
Explanation:
*This is only one way to write the hypothesis if you believe something else will happen you should reword it. The hypothesis should be based on your own educated guess.
Hypotheses should be written in the if-then-because format. This means to begin your hypothesis with the word if and explain your independent variable. Next, use the word then and explain what you believe will happen. Finally, write because and explain why you believe this phenomenon will occur. Hypotheses do not need to be 100% correct; it is common for scientists to be incorrect before an experiment. Hypotheses are just guesses based on research. If you are incorrect at the end of an experiment, simply explain that and what actually happened in your conclusion.
Identify 1 food chain that is a part of this food web. Your chain should include both the organism's name and arrows to depict what is prey upon by whom.
Answer:
Is this what you are looking for
About how many times thicker is a
cell wall compared to a cell
membrane?
A. about twice as thick
B. about five times as thick
C. about half as thick
D. up to 100 times thicker
Explanation:
I think it's up to 100 times
A barrier enclosing the cell, the cell wall is located outside the plasma membrane. The plasma membrane can be up to 100 times thinner than a cell wall, hence option D is correct.
What is a cell wall?Cellulose, a polysaccharide sugar that gives the cell wall strength, makes up the majority of its composition.
The leaf blades of L. perenne and T. repens and the stems of Z had the thinnest cell walls (0–9 m) and the thickest (2–0–3 m) among the cells classified as thick-walled.
Compared to gram-negative cells, gram-positive cells have substantially thicker cell walls. The typical thickness of the gram-positive cell wall is 20–80 nm, whereas the typical thickness of the gram-negative cell wall is 5–10 nm.
Therefore, the cell wall is up to 100 times thicker compared to a cell
membrane, hence option D is correct.
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If the symbol “→” means “are made of”, which of the following answer choices correctly demonstrates the relationship between the given terms? (1 point)
Cells → Tissues → Organs → Organ Systems
Organ Systems → Organs → Tissues → Cells
Organ Systems → Organs → Cells → Tissues
Tissues → Organ Systems → Cells → Organs
Answer:
Organ Systems → Organs → Tissues → Cells
Explanation:
Just took the Quick Check
The option that best demonstrates the relationship between the level of organizations of life if the symbol → means "are made of" is Organ Systems → Organs → Tissues → Cells
LEVEL OF ORGANIZATION:
All living organisms are made up of cells, which is the smallest or simplest unit of life.
However, CELLS of similar functions come together to make up the TISSUES, tissues come together to make up ORGANS and organs that perform similar functions come together to make up ORGAN SYSTEMS.
Therefore, if the right arrow symbol (→) means "made up of", the best and correct representation of life is:
Organ Systems → Organs → Tissues → Cells
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What does a cell need to be a prokaryote cell?
please help me i’m stuck !!
Answer:
The Prokaryotic CellProkaryotes are unicellular organisms that lack organelles or other internal membrane-bound structures. Therefore, they do not have a nucleus, but, instead, generally have a single chromosome: a piece of circular, double-stranded DNA located in an area of the cell called the nucleoid.
What changed,if any,did you make to you initial sequence,and why?
Answer:
I need a picture or something
Explanation:
How does seed become dormant?
Answer:
Seeds may be dormant because the seed coat prevents germination, or because the embryo - by itself or together with chemicals - inhibits germination. Seed coats render seeds dormant if: their hardness prevents the embryo from expanding. impermeability to water stops development.
(c) Joseph puts a small amount of water into a flat dish in Diagram 1.
Diagram 1
He then leaves the dish outside in the warm sunshine. After a while the water disappears. Explain what happens to the water particles.
What type of relationship do humans and honeyguides have?
Answer:
Humans and honeyguides have a mutualistic relationship, because they both benefit each other. Humans find honey much faster using the birds as guides, and the birds avoid being stung by bees.
if my answer helps you than mark me as brainliest.
Answer:
Humans and honeyguides have a mutualistic relationship because they both benefit each other. Humans find honey much faster using the birds as guides, and the birds avoid being stung by bees.
Explanation:
PLATO answer
