True/False: Blood entering the heart from the lungs is oxygen-poor blood.

Answers

Answer 1

Answer:true

Explanation:

Because we already used the oxygen from the blood to breathe (i think)


Related Questions

aerobic fitness is how well the body transports and utilizes _______ for energy.

Answers

Answer: Oxygen

Explanation: There's no explanation to go with the answer, sorry.


An earthquake’s magnitude is a measure of the _____.

damage the earthquake causes

number of surface waves it produces

amount of shaking it produces

size of seismic waves it produces

Answers

Answer:

Size of the seismic waves generated by an earthquake

Explanation:

how does oxygen have a direct effect on sea urchins

Answers

Answer:

When the oxygen level is low in a Purple Sea Urchin, muscles associated with Aristotle's Lantern pump fluid through its body (through the canals). Carbon dioxide (waste/not good stuff) is released through the anus. The Purple Sea Urchin obtains oxygen through diffusion only (the diffusion of oxygen into the organism).

Explanation:

Brainliest please

Sea urchins breathe through their feet tubes because of nonavailability of lungs and gills in them.  When the oxygen level is low at that time, the sea urchins pump fluids through their anus.

How are sea urchins able to survive sea ?

Sea urchins are able to survive in sea because of the tiny hair called spines  present on their body as  water currents are created because of the hair and waste gets washed away with the water currents created.

When the carbon dioxide level gets increased in the sea at that time the skeletal structures of the marine animals are also affected.

The shells made up of calcium also gets affected because of the increasing acidity in the water. Carbon dioxide not so good is released through the anus and  this totally affects the normal regulation of the creature.

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Does gypsum occur naturally pls give an explanation

Answers

Answer:

its a naturally occurring mineral

Explanation:

Gypsum is made up of oxygen, sulfur, calcium and water. As evaporation occurs the sulfur is not protected by the water and oxygen contacts sulfur bonding with it to form a sulfate. The sulfate then bonds with calcium  and water  to create gypsum.

What is the name for the type of graph shown in the image below?
A) Bar graph
B) Box-and-whisker
C) Cumulative frequency
D) Stem-and-leaf

Answers

Answer:

box-and-whisker is the right answer i think

Answer:

box and whisker

Explanation:

B

Which level of organization is shown in the diagrarn?
organ
0 tissue
organ system
O cell

Answers

Answer:

A. organ

Explanation: that is a kidney which is a organ, composed of cells making a tissue. It can't be tissue or cell then, and organ systems are multiple organs working together. so it's organ

a protein kinase cascade can amplify an intracellular signal by

Answers

F f f f f f f Fr. Did

21. Three different processes are occurring in the drawing below. Name each process and describe it.

Answers

The three different processes that are occurring in the above drawing are:

1. Process A: Diffusion.

2. Process B: Facilitated diffusion.

3. Process C: Active transport.

Cell transport refers to the movement of ions, molecules, or substances across the cell membrane, either into or out of the cells of a living organism.

From the above diagram, the three (3) different processes that are occurring are:

1. Process A: Diffusion.

Diffusion refers to the movement of gas molecules from a region of high concentration (top) to a region of lower concentration (bottom) until an equilibrium is attained or reached.

2. Process B: Facilitated diffusion.

Facilitated diffusion refers to the movement of substances or gas molecules across a cell membrane from a region of high concentration (top) to a region of lower concentration (bottom), especially through the help of transport protein.

3. Process C: Active transport.

Active transport involves the movement of substances across the cell membrane from a region of lower concentration to a region of higher concentration, against a concentration gradient and in the presence of oxygen.  

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what is the life cycle of a liverhook​

Answers

Answer:  

Image result for what is the life cycle of a liverhook​

Following ingestion, the young flukes migrate to the liver, through which they tunnel, causing considerable tissue damage. The infection is patent about 10-12 weeks after the metacercariae are ingested. The whole cycle takes 18-20 weeks.

Explanation:

what happens before RNA polymerase begins to work

Answers

Answer:

D. Nucleic acids attach to the bases in the DNA.

Explanation:

Transcription begins when an enzyme called RNA polymerase is added to the DNA template and begins a new chain a new chain to produce complementary RNA. During the RNA synthesis transcription takes place, then the cap and tail is added and then splicing occurs. RNA polymerase moves from the 3 'end to the template strand creating the RNA-DNA double helix or similar the base sequences. This makes a chain with each sugar by the set of bonds called phosphodiaster linkage. Then, the enzyme unwind the DNA and begins the synthesis of RNA. Therefore, D. Nucleic acids attach to the bases in the DNA.

Name the following

he valve presents at the mouth of the pulmonary artery​

Answers

Explanation:

The pulmonary valve (sometimes referred to as the pulmonic valve) is a valve of the heart that lies between the right ventricle and the pulmonary artery and has three cusps. It is one of the four valves of the heart and one of the two semilunar valves, the other being the aortic valve. Similar to the aortic valve, the pulmonary valve opens in ventricular systole, when the pressure in the right ventricle rises above the pressure in the pulmonary artery. At the end of ventricular systole, when the pressure in the right ventricle falls rapidly, the pressure in the pulmonary artery will close the pulmonary valve.

Entre las personas , la practica de estilos de vida denominados saludables ¿que consecuencias tiene sobre su metabolismo?

Answers

Answer:

El estilo de vida es una expresión utilizada para describir la forma en que se entiende o se percibe la vida. Este concepto no tan filosófico, sino más bien al estilo característico en que desarrolla  de vida. Estos aspectos abarcan, relaciones personales, del consumo, y la forma de vestir. Ademas de ello, en la descripción de las actitudes, aptitudes, y preferencias que refleja un individuo en la sociedad.

Por su parte, se puede decir que el metabolismo es el conjunto de reacciones químicas a partir de los alimento, las cuales se desarrollan en el cuerpo con la finalidad de producir energía necesaria para el desarrollo del ser vivo.

Con todo esto, se puede decir que el estilo de vida, específicamente el consumo de alimentos pueden afectar de manera importante el metabolismo en un sentido que de acuerdo a las características de los productos que se consuman, las reacciones químicas generadas pueden variar.

Asimismo, dichos factores pueden ser de riesgo o generadores de bienestar, ya que alteran de manera directa el proceso dinámico de degradación de alimentos.  

Explanation:

A group of scientists is studying a certain species of mouse. Previous genetic analysis has shown that fur color in this species is controlled by a single gene that has two alleles: a dominant allele (FF) that is associated with dark fur, and a recessive allele (ff) that is associated with light fur. The scientists collected data about a population of these mice to help determine the population's fur color allele frequencies. They found that out of 952 mice in the population, 238 mice had light fur. Assuming that the population is in Hardy-Weinberg equilibrium, which of the following is the number of mice in the population that have the genotype FfF, f?

50

238

476

952​

Answers

Answer:

476

Explanation:

5. What muscle is below the deltoid and is attached to the ulnar process? How many heads does this muscle have?

Answers

Answer:

What muscle is below the deltoid and is attached to the ulnar process? How many heads does this muscle have?

Explanation:

Triceps is the muscle that is responsible for the extension of elbow joint and also contribute to extension of shoulder joint. This muscle have three origin, that's why the name triceps. The triceps muscle has three heads which are:

A. The long head originates from the infraglenoid tubercle of scapula.

B. The lateral head originates from above the radial Grove in humerus.

C. The medial head originates form below the radial Grove in humerus.

These heads meet to form the body of triceps which gets inserted as triceps tendon in the olecranon process of ulna just behind the elbow. The contraction of this muscle causes the extension of the elbow joint.

Deltoid muscles are in your shoulder, which is the ball-and-socket joint that connects your arm to the trunk of your body. Deltoid muscles help you move your arms in different directions.

What is Deltoid muscle?

The muscle known as the triceps is in charge of extending the elbow joint and helping to extend the shoulder joint. The name triceps refers to the fact that this muscle has three origins.

The scapula's infraglenoid tubercle is the source of the long head. In the humerus, the lateral head develops from above the radial Grove. In the humerus, the medial head develops from below the radial grove.

The triceps body is formed when these heads come together, and it is placed as the triceps tendon in the ulna's olecranon process, right beyond the elbow. The elbow joint extends as a result of this muscle contracting.

Therefore, Deltoid muscles are in your shoulder, which is the ball-and-socket joint that connects your arm to the trunk of your body. Deltoid muscles help you move your arms in different directions.

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using your knowledge of photosynthesis, explain what is meant by the sentence “plants give us what we need and we give plants what they need.”

Answers

Part of the process of life is plants give us oxygen(o2) and we give off carbon dioxide (co2) in an exchange to breathe and plants to live and create food for themselves aka photosynthesis

what is the last structure of the air passageway in your lungs

Answers

Answer:

Bronchioles

Explanation:

You inhale through your nose and the air is filtered. It goes down the pharynx. It goes through the larynx. A "door" called the epiglottis opens during breathing. Then it enters the trachea. (windpipe) It goes through the bronchus. The tertiary bronchi branch into fine tubules called bronchioles, the last passageways for air. Air ends its pathway in the ________. (I bet you can guess because you're so smart!) They're surrounded by capillaries that connect the pulmonary arteries and veins. This enables the transfer of oxygen and carbon dioxide.

I hope this helped!!! Good luck on the test/quiz/project/homework/etc. you're working on! If you want I can give you a l!nk to the article I used. If not, it's fine too. Have a great day!

In science, the term theory is applied only to ideas that are supported by a vast, diverse array of evidence. How is the term used in everyday life?

Answers

Answer:

It explains facts and allows people to make predictions.

Explanation:

In everyday life, the word theory often means an untested hunch, or a guess without supporting evidence. A theory not only explains known facts but also allows scientists to make predictions of what they should observe if a theory is true.

In science, the term theory is applied only to ideas that are supported by a vast, diverse array of evidence. The term is also used in everyday life based on personal beliefs which does not support any strong evidence.

What is scientific theory?

In science, a theory is a term applied to a well-explanation of an aspect of the natural world on the basis of empirical evidence that has undergone rigorous testing and evaluation. The process involves collecting and analyzing data and observations and hypotheses are based on the data obtained which form the basis of scientific theory. Therefore, scientific theory is an explanation that has been verified by scientific researchers.

However, the term theory is casually used in everyday language without any scientific proof. For example, someone may say "I have a theory that the universe fake". This fact is casually spoken by a person which is not based on any scientific fact.

Scientific theories are based on evidence supported by rigorous testing, while everyday theories are based on personal beliefs without any strong evidence.

Therefore, the term theory is also used in everyday life, which is based only on a personal belief, and not only on any scientific fact.

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Which two climates have very low levels of precipitation?

dry and polar
polar and highlands
highlands and temperate marine
temperate marine and temperate continental

Answers

Answer:

arid and semiarid

Explanation:

Because they are the lowest in the climate areas. hope this somewhat helps you out

~dry and polar: cold air cant hold as much water vapour as warm air, so precipitation is less likely.

Hope this helped you- have a good day bro cya)

Please answer 16 points !!

Answers

Answer:

fisrt one is the answer most likely

Blood types are known as multiple alleles. Cross a person who has O blood with someone who has AB blood. What are the possible blood types from this cross? (2 answers)

1. A blood type
2. B blood type
3. AB blood type
4. O blood type

Answers

Answer:

is A blood type

Explaination:

In an ecosystem, what form does carbon take after photosynthesis? What form does carbon take after cellular respiration?

Answers

Answer:

organic molecules and carbon dioxide

Explanation:

Photosynthesis by land plants, bacteria, and algae converts carbon dioxide or bicarbonate into organic molecules. Organic molecules made by photosynthesizers are passed through food chains, and cellular respiration converts the organic carbon back into carbon dioxide gas. Cellular respiration does not affect the carbon cycle but is part of the carbon cycle. The 2 carbon cycles. carbon ( C ) is taken up by the plants and trees in the form of carbon dioxide ( CO2 ).

The cell membrane is said to be semipermeable because

Answers

Answer:

it is made of phospholipid bilayer along with other various lipids, proteins, and carbohydrates

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After the amino acid chain leaves the ribosome, which organelle then folds, modifies, and transports the protein?
O Lysosome
O Cytoplasm
O Endoplasmic Reticulum
O Ribosome

Answers

Answer:

The endoplasmic reticulum

Explanation:

It is not the lysosome because their processes are degrading and recycling cellular waste, and involved in energy metabolism

It is not the cytoplasm because the cytoplasm doesn't do anything itself, it just provides an environment for the rest of the organelles to do their job

It is not the ribosome because the amino acid chain left the ribosome in the question

For secretory, plasma membrane, and organelle proteins, the endoplasmic reticulum (ER) is a significant protein folding compartment. Thus, option C is correct.

What is the role of Endoplasmic Reticulum in folding?

A polypeptide chain cannot acquire its right structure and function without protein folding.

Chaperones are HSP that aid in protein folding. Chaperonins are multimeric complexes that fold proteins by forming hollow structures.

Numerous general activities of the endoplasmic reticulum include transporting produced proteins in vesicles to the Golgi apparatus and folding protein molecules into sacs termed cisternae.

Therefore, Endoplasmic Reticulum folds, modifies, and transports the protein.

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what is the ultimate source of electrons for photosynthesis in plants?

Answers

Answer: Water

Explanation:

What is the ultimate source of electrons for photosynthesis?

In photosynthesis, water is the source of electrons and their final destination is NADP+ to make NADPH

Photosynthesis is a plant process to make food and energy. It includes various steps to release energy. The water molecule is the ultimate electron donor in the process.

What is photosynthesis?

Photosynthesis is said to be the process that converts solar energy into the chemicals that are used as the energy source in cellular respiration activities. Here, sunlight, carbon dioxide, and water act as reactants.

The carbon dioxide and water undergo splitting by the membrane pigments and then the electron produced from water is carried with enzymes to make NADP⁺. This is further used to make NADPH. As result oxygen along with the sugar molecules are produced and are rich in ATP.

Therefore, water is the foremost source of electrons for photosynthesis in plants.

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Wha is biology and how it started and what kind of biology is this

Answers

Answer:

Basically biology traces the study of the living world from ancient to modern times. Although the concept of biology as a single coherent field arose in the 19th century, the biological sciences emerged from traditions of medicine and natural history reaching back to Ayurveda, ancient Egyptian medicine, and the works of Aristotle and Galen in the ancient Greco-Roman world. This ancient work was further developed in the Middle Ages by Muslim physicians and scholars such as Avicenna. During the European Renaissance and early modern period, biological thought was revolutionized in Europe by a renewed interest in empiricism and the discovery of many novel organisms

Explanation:

Answer:

Basically biology traces the study of the living world from ancient to modern times. Although the concept of biology as a single coherent field arose in the 19th century, the biological sciences emerged from traditions of medicine and natural history reaching back to Ayurveda, ancient Egyptian medicine, and the works of Aristotle and Galen in the ancient Greco-Roman world. This ancient work was further developed in the Middle Ages by Muslim physicians and scholars such as Avicenna. During the European Renaissance and early modern period, biological thought was revolutionized in Europe by a renewed interest in empiricism and the discovery of many novel organisms

what condition might result from an excess of aquaporins?

Answers

Answer:

fluid retention in pregnant women Aquaporins transport water. An excess of aquaporins during pregnancy can result in fluid retention. Water movement is important in urine formation in the kidneys.

Explanation:

Help!!!!!!!!!


Difference between sperm and zygote​

Answers

zygote is the diploid cell that results from the fertilization between an egg and sperm

sperm is the male reproductive cell that is responsible for a baby to born

ZYGOTE IS DIPLOID CELL FORM WHEN TWO GAMETE CELLS ARE JOINED BY MEANS OF SEXUAL REPRODUCTION

SPERM IS THE MALE REPRODUCTIVE CELL,OR GAMETE IN ANISOGAMOUS FORMS OF SEXUAL REPRODUCTION.

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How do most terrestrial primary producers make their own food?

Answers

Answer:

Primary producers like plants make their own food by doing something called photosynthesis. ... Leaves of plants absorb light from the sun. Leaves of plants also absorb the air that people breathe out, called carbon dioxide. Leaves of plants also absorb water.

Explanation:

something called photosynthesis

If you could invent a synthetic myelin, what disease might you be able to functionally cure?
A. cerebral palsy
B. multiple sclerosis
C. Alzheimer's
D. Huntington's


Answer: B

Answers

Answer:

b

Explanation:

which of the following is a true statement about glycolysis?
A. electrons and hydrogens get transferred to NAD+, making NADH
B. Electrons and hydrogens get removed from glucose when it gets oxidized
C. ATP gets made when a phosphate is transferred to ADP
D. ALL OF THE ABOVE

Answers

All the options are true statements  regarding the glycolysis and its mode of

operation.

Glycolysis involves the breakdown of glucose in order to release energy.

This produces pyruvate, two hydrogen ions , two molecules of water and

the free energy is used to produce ATP

In glycolysis, electrons and hydrogens get removed from glucose when it

gets oxidized and then they get transferred to NAD+, making NADH.

The ATP is generated by the transfer of a phosphate to the ADP to form ATP

which is a source of energy.

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