What is the purpose of the heart in the circulatory system?
Select one:

It provides oxygen during the release of hormones.

It is the muscle the pumps blood around the body.

It prevents pathogens from invading the organism.

It controls all of the body's functions.

Answers

Answer 1

Answer:

It is the muscle that pumps blood around the body

Explanation:


Related Questions

Any reaction that is not intended is called

Answers

the free encyclopedia. A paradoxical reaction or paradoxical effect is an effect of a chemical substance, typically a medical drug, that is opposite to what would usually be expected. An example of a paradoxical reaction is pain caused by a pain relief medication.

Why do scientists only test one independent variable in an experiment?

Answers

To not getting confusing results. By isolating one variable scientists can conclude the results of the experiment were directly impacted by the variable they changed and nothing else.
Testing only one variable at a time helps you look at the results of your experiment and to see how much a single change affected the result.

Your nervous system includes the brain and spinal cord

A. True

B. False

Answers

Answer: A

Explanation: The nervous system is the brain and spinal cord.

Answer:

A. True

Explanation:

The chemical substances in our environment to which we respond can be called?
A. stimuli
B.impulses
C.responses
D.sense cells

Answers

A. Stimuli

WHAT IS STIMULI?

A stimuli is anything that can trigger a physical or behavioral change.The changes in the environment to which living things respond are called stimuli. The living things show response to external stimuli such as heat, light , touch, sound, smell, taste, water and chemicals.It can be internal or external both.When diverse organs works collectively in a scientific way to supply a reaction to the stimulus, this is known as coordination.Stimuli is essentially anything that triggers a receptor for one of those senses.

You can understand this with an example that would be the receptors on our skin which sense a stimulus like pain. Sense organs contain groups of receptors that respond to specific stimuli.

Learn more:

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helpppppppppppppppp meeeeee plzzzzzzzzzzzz

Answers

Answer:

Im not a 100% but i think it's option C, if not then it has to be B

Hope this helps!

PLS HURRY AND NO LINKS PLEASE
If a long tail is a dominant characteristic, in which case is the characteristic of a long tail definitely expressed?
A when both parents have a long tail
B when neither allele contains instructions for a long tail
C when at least one parent has a long tail
D when at least one allele contains instructions for a long tail

Answers

Answer:

b

Explanation:

Answer:

the correct answer is d i took the test.

Explanation:

La coordinación nerviosa controla funciones de sensibilidad y respuesta inmediata ante los estímulos recibidos. Una de las funciones primordiales de la médula espinal se concentra en:

a)regular la temperatura corporal
b)controlar el sueño y la vigilia
c)el arco reflejo
d)la memoria

Answers

i think it might be d but have a great rest of your day

help with biology please

Answers

Answer:no

Explanation:picture

Answer:

i think its number 1

hope that helps!

fungi and bacteria are_____.
-plants -producers -decomposers

Answers

Answer:

decomposers

Explanation:

Answer:

decomposer

Explanation:

Fungi and bacteria are the most common decomposers.

WHATS THE ANSWER ?????

Answers

Answer:

Antigens are secreted by the endocrine system

Explanation:

The main job of the innate immune system is to fight harmful substances and germs that enter the body, for instance through the skin or digestive system. The adaptive (specific) immune system makes antibodies and uses them to specifically fight certain germs that the body has previously come into contact with


Which is an example of an ecosystem change that resulted from human activity?

Answers

Answer:

Your welcome! :)

Explanation:

An example is:

Deforestation occurs when a forest or stand of trees is removed, converting the land to a nonforest use. This changes the ecosystem drastically and results in a dramatic loss of biodiversity.

♡♡♡

Answer:

chaparral shrublands turning to grass due to frequent fires

Explanation:

I just took the quiz and it's right

EZ POINTS GRADE 2 SCIENCE PLEASE ANSWER FUE TOMRROWAEfKEAFEAS
fill in the blanks wiht the words givewn below

Answers

Answer:

1.) tides

2.) Salinity

3.) Oceans

4.) reef

5.) Intertidal Zone

6.) Neritic Zone

7.) Benthic Zone

8.) Reef

9.) Estuary

10.) Marine Biome

Hope this helps!

what is the process of transformation?
infecting bacteria with bacteriophages
adding foreign DNA to a bacterial cell
copying foreign DNA into RNA
causing mutations in viral genetic material

Answers

is this all in the same question?

- The ability of an ecosystem to maintain a steady equilibrium by responding to
internal and external negative feedback systems describes -

Answers

Answer:

Describes ecosystem homeostasis

Explanation:

All of living and noliving things in a particular area

Answers

What are we supposed to answer? There is no question?
That is the definition of an ecosystem

Question 4 of 10
What is the main function of the circulatory system?
O A. To break down food into molecules of nutrients
B. To collect wastes made by cells and remove them from the body
O c. To carry nutrients to cells and wastes away from cells
O D. To protect the body from pathogens that can cause infection
SUBMIT

Answers

The answerrrrr is B :)(

What is an agricultural subsidy?
Select one:
- A sum of money paid to farmers and agribusinesses by the government to
supplement their income and manage crop supply
-A sum of money paid to farmers and agribusinesses by the government in
exchange for their land and machinery
о
-A bank loan available to commodity crop farmers in case market prices fall

Answers

Answer:

A sum of money paid to farmers and agribusinesses by the government to

supplement their income and manage crop supply

Which Ali combination represents a male who has an X-linked recessive disorder

Answers

XrY is the Ali combination that represents a male who has an X-linked recessive disorder

The light reactions can only occur in the absence of light.
A. True

B. False

Answers

Answer:

false

Explanation:

the light reactant needs light

Me pueden ayudar con la respuesta? Es urgente!

Answers

A: especie

B: gen

C: desarollo

D:

E:deriva genetica

F:población

G:mutuación

no ps no pude con la D-

Someone pls help me ill give out brainliest pls don’t answer if you don’t know

Answers

1.8 ml or whatever the unit is
1.6 is the volume of the object.

Item 5 What is the role of a generator in producing electricity? The generator stores electrical energy for later use in homes and businesses. The generator spins the turbine to create mechanical energy. The generator transforms the mechanical energy of the turbine into electrical energy. The generator reverses the turbine to create electrical energy.

Answers

Answer:

The generator transforms the mechanical energy of the turbine into electrical energy

Explanation:

Electricity generator is a device that is used in generating power supply which can be used in industries, homes and for commercial and private purposes.

It operates by converting mechanical energy into electrical energy for the use in an external circuit. mechanical energy can be obtained from steam turbines, internal combusting energy, gas and water turbines and it can be obtained through the rotating shaft.

The capacity of each generator determines the amount of energy it can supply to a given place.

the lacteal is responsible for the transport of
A. Fats
B. Blood
C. Protons
D. carbohydrates​

Answers

Answer:

Lacteal is a lymphatic capillary that absorbs dietary fats in the villi of the small intestines. The lacteals merge to form larger lymphatic vessels that transport chyle to the thoracic duct where it is emptied into the blood stream at the subclavian vein.

hope it helps

lacteal transport a. fats

Marcus is testing a hair sample from the telogen stage. What is likely to be TRUE about this sample? A. There will be several medullas present. B. There will be mitochondrial DNA present. C. There will be nuclear DNA present. D. There will be very little DNA present.

Answers

Answer:

c

Explanation:

no explanation (plz give brainliest)

The statement C is correct. There will be nuclear DNA present.

What is DNA?

Deoxyribonucleic acid is a polymer composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses. DNA and ribonucleic acid are nucleic acids.

Moreover, DNA is the information molecule. It stores instructions for making other large molecules, called proteins. These instructions are stored inside each of your cells, distributed among 46 long structures called chromosomes.

Hence, DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and one of four types of nitrogen bases.

Learn more about DNA:

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#SPJ2

A functional or physiological adaptation:
A. Is a physical feature of an organism that helps it survive

B. Allows an organism to perform special functions within the body

C. Is a behavior that is taught after birth

Answers

Answer:

A trust me.

Explanation:

are you functional adaption is an adaption that helps an organism survive in a certain environment, typically altered by a physical stimuli, dietary changes, or injury.

Answer:

yes behavior is taught after birth

ARTS :


true. or. false. ​

Answers

Answer:

true false true false true

I NEED HELP PLEASE ANSWER FAST
A population of wolves migrates north in search of food. As the wolves travel, they enter a region that has long, snowy winters. Some of the wolves have an allele that gives them white coats. This makes them better able to sneak up on prey.

1. Which type of wolf is selected for in this new ecosystem?

2. Has genetic diversity helped or hurt the survival of the wolf population? Explain.

Answers

1. White wolfs
2. Yes, wolfs are dying slowly, like all animals but wolfs are for some reason strong animals.

Which of the following substances will conduct electricity?
A) Methanol
B) Aqueous KCI
C) NaCl in its solid form
D) Sugar solution

Answers

Answer:

b

Explanation:

because It have ionic bonding and when in molten form ions are mobile and carry a charge however when in solid form it wouldn't conduct electricity as the ions will be fixed in position.

hope this helps:)

Individual bones are organs.
A. True

B. False

Answers

Answer:

a

Explanation:

Answer:

True

Explanation:

Because they are made out of tissues

27. Which statement best describes a chromosome?
A) It is a gene that has thousands of different
forms.
B) It has genetic information for traits of an
organism that is contained in DNA.
C) It is a reproductive cell that influences more
than one trait.
D) It contains hundreds of genetically identical
DNA molecules for one trait.

Answers

Answer:

B

Explanation:

Chromosomes are structures composed of DNA that, in turn, carry the genes of a living being, responsible for defining the physical characteristics of each individual. Chromosomes are involved in the nucleus of cells that make up a living being.

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