what is stimuli in biology in terms of igcse ????​

Answers

Answer 1

Answer: A Stimulus is any change either internal or external which leads to a response. This could be a noise, smell or the changes in blood sugar level.

Explanation:


Related Questions

In addition to traditional coursework, most microbiology programs require which of the following?
O independent studies
O professional internship
O laboratory experience
O group projects​

Answers

Answer:

laboratory experience

Explanation:

Got It right on test

The answer IS:

laboratory experience

what is the meaning of solvent​

Answers

Answer:

Solute is the substance that dissolves and solvent is the liquid in which the solute

Explanation:

The model below represents an atom of which element on the periodic table?

Answers

Answer: Aluminum

Explanation:

The normal Aluminum is 13p+ and 13n. (13+13)

===> Aluminum-26 (or we just call it Aluminum)

This one has 13p+ and 14n. (13+14)

===> Aluminum-27

Which of the following macromolecules is CORRECTLY paired with its star organelle based on its function?

Answers

Your question should have a picture in other to answer the question:)

(7th grade question)

Which are the causes of rocks being exposed at Earth’s surface?

A- erosion and subduction

B- extreme heat and pressure

C- melting and cooling

D- erosion and uplift

Answers

Answer:

A. erosion and subduction

Explanation:

plz give me brainiest

Answer:

Erosion and uplift

Explanation: I took the test and got it all right erosion and subduction is NOT the answer.

Many species of microorganisms live on and within the bodies of
larger organisms. These microorganisms affect the health of other
organisms in both positive and negative ways. Which statement describes
the role of a microorganism that has an unhealthy effect on humans?

Answers

Answer:

It would be a parasite, you forgot the answer choices btw.

Explanation:

Directly or indirectly, where does almost all life get energy from?

Answers

Answer:

The sun

Explanation:

Only producers get energy directly, either straight from the sun or by some other means. Carnivores and other consumers get energy indirectly via the consumption of producers and animals that eat producers.

Directly is the correct answer

i need help please ​

Answers

Answer:

can't really see the questions pls do it a different angle

Most functions of a prokaryotic cell are controlled by the cell's nucleus. True or false?

Answers

Answer:

False.

Explanation:

A prokaryotic cell doesn't even have a nucleus.


How do active and passive transport help a cell respond to changes in the environment?

Answers

- both transport things across the cell membrane
- help the membrane maintain homeostasis

Active and passive transport help a cell in responding to the changes in the outside environment as both of these processes help in transporting substance into and out of the cell and maintaining the homeostasis in cell.

What is Cellular transport?

Cellular transport is the process of transportation of substances into and out of the cell. Cellular transport includes different processes such as active and passive transport. The active transport requires energy for transporting substances against the concentration gradient and the passive transport does not require energy as the substances move in the direction from high concentration to low concentration of solutes.

The transport of substances which are required by the cell and excretion is possible through active and passive transport. these processes helps in maintaining homeostasis in the cell.

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n what area do you feel you made your biggest improvements?

Answers

This is supposed to be a personal opinion answer.

Scientists have a theory about the relationship between climate and biodiversity. Which best describes this theory?

Warmer climates promote higher biodiversity, allowing plants to grow year-round. This supports more organisms that rely on plants.
Colder climates promote higher biodiversity, reducing the competition among organisms for food. This supports stronger organisms that live longer.
Warmer climates promote higher biodiversity because they tend to receive more rainfall. This provides a source of water for more organisms.
Colder climates promote higher biodiversity because they are usually larger in size. This provides space for more organisms.

Answers

Answer:

c

Explanation:

"warmer climates promote higher biodiversity because they tend to receive more rainfall. This provides a source of water for more organisms."

Answer:

The correct answer is A

Explain why we can treat bacterial infections but we cannot completely remove virus from an infected person?

Answers

Answer:

This is because viruses are so simple that they use their host cells to perform their activities for them. So antiviral drugs work differently to antibiotics, by interfering with the viral enzymes instead.

Explanation:

excertion is best described as the removal of what​

Answers

Excretion is the process of removing wastes and excess water from the body.

Answer:

Excretion is the removal of waste

The release of which substance is represented by the arrows?
1. Glucose
3. Carbon dioxide
2. Oxygen
4. DN

Answers

Answer:

Can you add a picture?

Explanation:

We don't know where the arrows are coming from.

We need a photo we don’t know where the arrows are

According to natural selection theory, Different species occupying the same habitat will adapt to that habitat by undergoing the same genetic changes Adaptations beneficial at one time should generally be beneficial during all other times Well-adapted individuals have more offspring, and thus contribute more to the next generation's gene pool, than do poorly adapted individuals. Adaptations beneficial in one habitat should generally be beneficial in all other habitats

Answers

Answer:

The most correct statement is - Well-adapted individuals leave more offspring, and thus contribute more to the gene pool, than poorly adapted individuals.

Explanation:

Adaption in natural selection is a species, time-specific, and habitat-specific process. So, it means if a species is adapted to genetic changes in a particular habitat, it is not necessary that all other species also adapt to similar genetic changes.

Similarly, if a species has beneficial adaption for a particular habitat, it is not necessary it will be beneficial for the other habitat as well.

Thus, natural selection leads to the well-adapted individual that leave more offspring and contribute more to the gene pool.

What do biogeochemical cycles represent?

Answers

The biogeochemical cycle of water, or the hydrological cycle describes the way that water (Hydrogen Dioxide or H 2 O) is circulated and recycled throughout Earth’s systems. All living organisms, without exception, need water to survive and grow, making it one of the most important substances on Earth.

hope that helps

Biogeochemical cycles represent the main system where the energy of the Sun is converted into the energy of chemical compounds by living beings and the products of their activity.

What is Biogeochemical cycle?

A biogeochemical cycle is defined as the path by which a chemical substance cycles through the biotic and abiotic compartments of the Earth where the biotic factor is the biosphere and the abiotic factors are the atmosphere, hydrosphere and lithosphere.

Nutrients cycle occur through organic components as well as abiotic components. In biosphere the term bio refers to biotic components while 'geo' refers to abiotic components. Therefore, nutrient cycles in nature are called biogeochemical cycles.

Thus, Biogeochemical cycles represent the main system where the energy of the Sun is converted into the energy of chemical compounds by living beings and the products of their activity.

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Where do I put the 4 protons

Answers

Answer:

Protons and Neutrons go in the middle

Explanation:

Which lobes of the brain were most affected?

Answers

Frontal and parital lobe

An atom with 7 protons, 6 neutrons, and 7 electrons has an atomic mass of _____ amu

Answers

Answer:

The answer is 13

Explanation:

To find the amu you have to add the # of protons to the # of neutrons.

How does a radio use radiant energy

Answers

Electromagnetic waves carry energy

Answer Explanation:

A radio uses an electromagnetic energy in the form of radiant energy. This is an invisible energy in the form of radio waves that can travel through space.

When it comes to radio, the radio waves are received by the radio tuner. It is then converted into sound waves that are audible to the human ears. Unlike the other electromagnetic radiation, the radio waves are harmless since they do not cause any harm to the human body. This is the reason why, it is more commonly used for telecommunications and toys controlled by remote.

Paleomagnetism is the study of

Answers

Answer:

B

Explanation:

ancient study of both rocks and earth as a whole

B. Over the last 100 years

10. When we breathe in the muscles below the rib cage is pulled down, and air gets suck
into the rib cage, filling the lungs, what is this muscle called?
a. Diaphragm
b. Lung
c. Stomach
d. Trachea​

Answers

Answer:

diaphragm

Explanation:

Answer:

B

Explanation:

A manufacturing factory is accused of emitting high levels of CO2 into the ecosystem. The factory burns coal to heat steel
drums. The factory uses lake water to cool the drums. The water is poured over the drums and then emptied back into the
lake
Scientist A claims the factory is responsible. The burning of coal releases excess CO2 into the atmosphere. This excess CO2 is
transferred to all areas. The CO2 is not lost throughout the system.
Scientist B clams the factory is not responsible. The CO2 is released directly into the atmosphere, not into the lake. The CO2 is
lost into the upper layers of the atmosphere and not cycled back into the ecosystem
The model represents the cycle of carbon in the atmosphere. Which key issue illustrated in the model would best support Scientist
A's claim?
A)
The model shows a factory creating excess levels of CO2
B)
The model depicts a continuous cycle. An increased level in one area will
increase levels throughout.
The model depicts multiple cycles. The atmospheric cycle would show an
increased level of CO2
The model shows high levels of carbon in the lake. Any change to this level
will have a greater impact on the atmosphere.
D)

Answers

The key issue that must be illustrated in the model and best support Scientist A claim is as follows:

The model depicts multiple cycles. The atmospheric cycle would show an increased level of CO2.

Thus, the correct option is C.

What is an Ecosystem?

An ecosystem may be defined as a place or an area in which individuals of different species live together and interacts with one another for the purpose of food, shelter, and space.

According to Scientist A, the factory is responsible for the excess level of carbon dioxide in the atmosphere. This is absolutely true because the factory burns coal that liberated a high amount of CO2 into the environment.

Apart from this, the factory uses lake water to cool the drums. The water is poured over the drums and then emptied back into the lake. This increases the concentration of CO2 in the lake as well.

Therefore, the correct option for this question is C.

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Scientists core a Redwood tree in the California Redwood forest. The core of this particular tree has 1115 rings. How old is the tree in years?

Answers

Answer:

1115 years.

Explanation:

One ring equak one cycle year.

The last part for my project it's early and I'm being lazy please look it up? giving lots of points cuz that only fare don't take advantage of this.

Describe how community residents and authorities can prepare for an earthquake and its aftermath. Review earthquake advice from the USGS, the American Red Cross, and other agencies.

Answers

Answer:

here is what I know about earthquakes..

Explanation:

Learn how to prepare for an earthquake with the following safety tips. Please review our guidance on preparing for an earthquake while still protecting. Doorways are no stronger than any other part of a structure so don't rely on them for protection! Staying informed about your community's risk and response plans.

name the blood vessels that convey blood to the forelimbs​

Answers

Answer:Oxygenated blood leaving the heart flows into the aorta, one of its earliest branches is the subclavian artery which supplies blood to the forelimb, neck and cervicothoracic junction.

Explanation:

pls help me I don't understand this​

Answers

Answer:

D

Explanation:

the organism belongs to kingdom protoctista it is called amoeba

the characteristics stated in d are those of members of kingdom protoctista.

The primary source of energy for most organisms are

Answers

Answer: The Sun

3.1 The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers such as plants, algae, and cyanobacteria use the energy from sunlight to make organic matter from carbon dioxide and water. This establishes the beginning of energy flow through almost all food webs.

Explanation:

Answer:

The main energy source for life is the Sun

Explanation:

If a cell represented a city, what cell part would be the hotel?

Answers

Answer:

mitochondria

Explanation:

because its the power-house of the cell

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Prior to the invention of agriculture the native Americans traveled from place to place in search of food. These people were known as thisnomadsconquistadorsIndiansAnasazi Determine whether the two lines are parallel, perpendicular, coinciding, or only intersecting.y = - 3x + 59x + 3y = 2 A composition of transformations maps pre-image EFGH to final image E"F"G"H".Trapezoid E F G H is shifted down and to the left to trapezoid E prime F prime G prime H prime. Trapezoid E prime F prime G prime H prime is reflected across the line of reflection c to form trapezoid E double-prime F double-prime G double-prime H double-prime.The first transformation for this composition is [________], and the second transformation is a reflection across line c.a 180 rotation about point Ga 180 rotation about point Ha translation down and to the lefta translation up and to the right In which region is the substance in both the solid phase and the liquid phase?1 2 3 4 Because they were ___________, Quakers in Pennsylvania refused to go to war against the French. Which statement about this equation is true?3+x= 23xThe equation has no solution.The equation has one solution.The equation has infinitely many solutions. C. Compltez avec le mot qui convient. Use un or une for each word and D. Compltez avec une forme de devoir, pouvoir, ou vouloir selon le sens. how has limiting factors for the ecosystem impacted pythons in the everglades This element has 4 more protons than Silicon What is pi/ used for in math? Words to Know Write the letter of the definition next to the matching word as you work through the lesson. You may use the glossary to help you. eukaryote A. A protective layer surrounding a cell that controls what enters and leaves the cell spore B. An organism composed of one or more cells that contain nuclei cell membrane C. A reproductive cell that is resistant to harsh conditions and capable of developing into an adult without fusing with another cell prokaryote D. A single-celled organism that lacks a nucleus and membrane-bound organelles using a positive message to make a suggestion is what? 3/4 change 3/4 to a decimal show work The Taklimakan Desert is located in __________.A.ChinaB.JapanC.North KoreaD.South Korea Which of the following statements is correct about the shape of the H2O molecule? Select all that apply. Water is a linear molecule with bond angles of 180oWater is a bent molecule with bond angles of 104.5oWater has two pairs of unbonded electrons which are spread out evenly between the hydrogen atomsWaters two pairs of unbonded electrons push the hydrogen atoms further away from their negative charge Find the slope of AB through points A(1,7) and B(-1,4). m of AB= What connections do you think there are between car accidents and cancer? Given m||n, find the value of x. In lines 7-8 when she describes Americans as being like the crazy quilts that have been one of its great folk-art forms? How does this description support her claim? ITS SUPER EASY PLEASE HELP ITS DUE IN AN HOUR PLEASEEEEEEEEEEEEEEEEEE