Two primary agents of cellular communication are hormones and chemicals produced by nerve cells.
What are the principles of cellular communications?
Cellular communication is a stepwise process that affects the generation of an extrinsic signal, detection of the signal by a receptor, transduction of the signal by intracellular signalling molecules and cellular response. When the extrinsic signal is removed, cellular communication processes cease.
Thus, hormones and chemicals are two primary agents of cellular communication.
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If an organism has a hapoloid chromosome of 8 which of the following is the organism diploid chromosomes and why
Answer:
if I remember right, a diploid is twice the amount of a haploid because diplood are pair chromosomes. So if there is 8 haploid there will be 16 diploid.
Explanation:
To find the diploid put the n of 2n.
Which of the following is not a component of soil? a. organic material b. minerals c. gases d. none of the above
Answer:
none of the above
Explanation:
all can be found in soil
All of the mentioned like organic material, minerals and gases are components of soil.
What is Soil?Soil is the top most layer or loose surface material that cover the Earth. It consists of inorganic materials, minerals, gases and organic matter. Soil help to give plants the structural support they need and also can be their source of water and nutrients.
Therefore, All of the mentioned like organic material, gases, and minerals are components of soil.
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sub atomic particles found in protons and neutrons are what?
Answer:
thus , protons and neutrons are no more indivisible than atoms are ; indeed , they contain still smaller particles , which are called quarks . quarks are as small as or smaller than physicists can measure
Explanation:
What is the difference between primary waves and secondary waves
Answer:
Primary and secondary waves both are body waves of seismic waves. Primary waves or pressure waves are compression waves and secondary waves are shear waves. These waves are represented by P and S waves respectively.
Differences:
P waves are smaller in size but travel faster, however, cause less damage whereas S waves are greater in size cause more damage, and travel slower.
P waves move in a push-pull pattern and travel through different mediums like solids, liquids, and gases, whereas S waves move in an up-and-down pattern and travel only through one medium that is a solid medium.
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Answer: earthquake
Explanation: earthquakes shake and have these techtonic plates. this causes the ground to break.
SCIENCE
Why is the nervous system in the human body a system?
A. It is made of tissues that can conduct electricity, a required function in a system.
B. Like all systems, the nervous system is contained within a living organism.
C. It is made of several components that act interdependently to perform a function as a whole.
D. The nervous system acts together with other systems to control a larger organism
Answer:
The nervous system acts together with other systems to control a larger organism.
Explanation:
Moreover, it is formed by organs which are also formed by specific tissues.
Answer: C ( it is made of several components that act interdependently to perform a function as a whole)
Explanation: It's C because I took it for summer school and I got it correct (score: 3/3) : )
Please help me! It's earth science
Answer: In order from top to bottom:
Foliation
Impact metamorphism
Compaction
Burial metamorphism
Explanation:
10 points
41
Which statement best describes how a vaccination can help protect
the body against disease?
Vaccines directly kill the pathogen that causes the disease,
Vaccines act as a medicine that cures the disease
Vaccines cause the production of specific molecules that will react with and destroy
certain molecules
Vaccines contain white blood cells that engulf harmful germs and prevent them from
spreadin throughout the bodyg
vaccines cause the production of specific molecules that will react with and destroy
People cut down a forest to build a housing development. Which of the following describes how this action will likely affect the water cycle for this region? O Organisms will lose their habitat Groundwater in the area will be reduced More wood will be available for building homes Runoff will be reduced once the streets are paved
Answer:
It should be, More wood will be available for building homes
& Organisms will lose their habitat
_______________________________________________
*rate this answer and say thanks please!
I put this same answer on a different question.
Hi there! So among the options, there are:
Organisms will lose their habitat
Groundwater in the area will be reduced
More wood will be available for building homes
Runoff will be reduced once the streets are paved
Think about it. This is asking how the water cycle will be affected.
It wouldn't have anything to do with organisms, this is about water. It wouldn't be involving wood, since we're talking about water.
A and C are no longer options.
The answer is B, Groundwater in the area will be reduced. It took me a bit on this one, too, since it's a bit tricky. I also got it right on my exam and I do FLVS, this is in Earth Space Science.
Have a lovely rest of your day!
What is an atom's atomic number?
the number of electrons in an atom
the number of neutrons in an atom
the number of protons in an atom
the number of bonds in an atom
Answer:
the number of protons in an atom
Answer:
The number of protons in an atom
Describe how you would use Random Sampling to determine the population of dandelions in your yard.
Answer:
randomly select different areas to count the dandelions, average the numbers and then multiply by the number of plots your grid contains. 6. In a forest that measures 5 miles by 5 miles, a sample was taken to count the number of silver maple trees in the forest.
Random sampling is used in sampling biological products. It is made up of subsets from the larger population in which the subset of individuals is selected randomly with equal probability.
It is used to collect the data for your research work.For sampling the dandelions randomly we will first choose a distinct random area for computing the dandelion.Estimate the average of the numbers determined before.Now multiply the average with the design your framework contains or with the total number of squares in the yard.Therefore this is how you calculate the random sample size.
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DNA _____________________ after transcription.
Answer:
after Transcription DNA is copied into a new molecule of messenger RNA. DNA safely and stably stores genetic material in the nuclei of cells as a reference, or template.
Explanation: happy to help :)
Inbreeding involves what?
A. breeding one species with another to bring in a characteristic.
B. breeding unrelated dogs to increase genetic diversity.
C. breeding for less desirable characteristics.
D. breeding closely-related dogs with similar characteristics.
Answer:
a or d not sure which
Explanation:
helpppppppppppppppppp
endemic species.
te lo aseguró
Importance of plants from an economic, nutritional, environmental and medicinal point of view
Please be correct answer, and if you do not know not with this!
Answer:
Plants are extremely important in the lives of people throughout the world. People depend upon plants to satisfy such basic human needs as food, clothing, shelter, and health care. These needs are growing rapidly because of a growing world population, increasing incomes, and urbanization .
Plants provide food directly, of course, and also feed livestock that is then consumed itself. In addition, plants provide the raw materials for many types of pharmaceuticals, as well as tobacco, coffee, alcohol, and other drugs. The fiber industry depends heavily on the products of cotton, and the lumber products industry relies on wood from a wide variety of trees (wood fuel is used primarily in rural areas). Approximately 2.5 billion people in the world still rely on subsistence farming to satisfy their basic needs, while the rest are tied into increasingly complex production and distribution systems to provide food, fiber, fuel, and other plant-derived commodities .
Medicinal plants have been used in healthcare since time immemorial. Studies have been carried out globally to verify their efficacy and some of the findings have led to the production of plant-based medicines. The global market value of medicinal plant products exceeds $100 billion per annum. This paper discusses the role, contributions and usefulness of medicinal plants in tackling the diseases of public health importance, with particular emphasis on the current strategic approaches to disease prevention. A comparison is drawn between the ‘whole population’ and ‘high-risk’ strategies. The usefulness of the common-factor approach as a method of engaging other health promoters in propagating the ideals of medicinal plants is highlighted.
Some fruit flies have orange eyes and others have red eyes. If two orange-eyed fruit flies are crossed, their offspring always have orange eyes. If two red-eyed fruit flies are crossed, their offspring sometimes include both orange-eyed and red-eyed flies. What can be concluded from these observations
Answer:
Orange is a dominant color but red can sometimes be displayed, If two red are crossed and they dont get red then orange is dominant and displayed earlier in the gene pool
Explanation:
Brainliest?
Crossing an orange-eyed fly with a red-eyed fly will produce a 1: 1 ratio in the offspring.
Drosophila is an exceptionally useful genetic model used for the study of simple and complex behaviors.Its use has given an important insight into the molecular, cellular and evolutionary underpinnings of behavior. What is inheritance?Inheritance is the process by which genetic information is passed on from parent to child. This is why members of the same family tend to have similar characteristics. Inheritance describes how genetic material is passed on from parent to child.
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state the shape of the bacterium used in the investigation of preventing bacterial growth
Answer:
Bacterial cells come in different shapes: from rods, to spheres, to spirals
Explanation:
A pitcher throws a ball toward a player holding a softball bat. The player uses the bat to hit
the ball. The bat applies a 10-newton force to the ball.
Which statement correctly describes the reaction force between the bat and ball?
A The reaction force is the force that causes the ball to move toward the bat.
B The reaction force is the force applied to the bat by the player holding the bat.
C The reaction force is the force that pulls the ball toward the ground.
D The reaction force is the force of the ball on the bat.
Answer:
D
Explanation:
The reaction force is the force of the ball on the bat
Answer:
The answer is B
Explanation:
According to Newton's third law, for every action, there is an equal and opposite reaction. In other words, an interaction between two objects results in the two objects exerting forces upon each other.
Explain why the genes make the cell growth controller. The protein synthesis indicator and the DNA repair protein are active in all the cells.
Answer:
man im not sure
Explanation:
What makes two isotopes of the same element different from each other?
A. the electric charge of the atom
B. the number of electrons in the atom
c. the number of protons in the atomized nucleus
D. the number of neutrons in the atomic nucleus
Answer:
An isotope is one of two or more forms of the same chemical element. Different isotopes of an element have the same number of protons in the nucleus, giving them the same atomic number, but a different number of neutrons giving each elemental isotope a different atomic weight.
Explanation:
pretty sure its D
A student is observing plant cells and animal cells under a microscope.
Which of the cell structures would be found in both the plant and the animal cells when listed in the chart above?
A. nucleus
B. cell wall
C. chloroplast
D. large central vacuole
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what is gene flow and how might it impact a wolf population
Answer:
Gene flow within a population can increase the genetic variation of the population, whereas gene flow between genetically distant populations can reduce the genetic difference between the populations.
Explanation:
Gene flow within the population increases the genetic variability in the wolf population variation can be seen.
What is gene flow?Gene migration is another name for gene movement. The movement of genetic material from one group to another is referred to as gene flow.
Through migration, gene flow can occur between two populations of the same species and is mediated via vertical gene transmission from parent to offspring and reproduction.
Any movement of people and the genetic material they carry from one community to another is referred to as gene flow, often known as migration.
Therefore the movement of genetic material from one population to another is known as gene flow.
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Marshall has a rectangular garden that he wants to enclose with a fence. To calculate the perimeter, he used the expression below, where
w
represents the width and
l
represents the length of the garden.
2
w
+
2
l
Which other expression could Marshall use to calculate the perimeter?
Answer:
tell marshall to not be cheap and get a contractor
Explanation:
A cross of a red cow (RR) with a white bull (WW) produces all roan offspring (RW). This type of inheritance is known as:
sex-linked
complete dominance
codominance
incomplete dominance
Answer:
Codominance
Explanation:
Both parents carry a dominant trait, so the offspring will have a coat of main colour, and also some hairs of another colour.
Which statement is not true about the main ingredient of the cell -- water?
a). Water surrounds the cell which helps insulate your body
b). Water makes up more than 75 percent of a cell
c). Water helps your body maintain a stable internal environment (homeostasis)
d). Water helps make salts
Answer:
d. water helps make salt
21. The graphs show the results from an investigation of relative enzymatic activity of four different enzymes in acidic and basic environments.
Which enzyme would most likely function well in the stomach?
Pepsin
Papain
Chymotrypsin
Cholinesterase
Is the mass–kinetic energy relationship directly proportional (as one variable increases, the other increases) or inversely proportional (as one variable increases, the other decreases)?
Answer:
The kinetic energy of a moving object is directly proportional to its mass and directly proportional to the square of its velocity.
Explanation:
The mass-kinetic energy relationship is ; Directly proportional
The Kinetic energy of an object is directly proportional because an increase in the kinetic energy of a moving object leads to an increase in the mass of the object and also to the increase in the velocity of the object squared.
i.e. K.E ( kinetic energy ) = [tex]\frac{1}{2} mv^2[/tex]
Hence we can conclude that the mass-kinetic energy relationship is directly proportional.
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So long ago they used a sundial to tell it. It starts with a “t” if you want me to spell it – what is it?
Answer: time
Explanation:
What is the term used for organisms moving into a area?
Answer:
Invasive species are species that are introduced into an environment but are not naturally found in that environment. One example of an invasive species is the America gray squirrel, introduced into Britain at the end of the 18th century.
Explanation:
Answer:
Migration or migrating