Answer:
TRUE
Explanation:
I believe the correct answer is FALSE.
The heart is an organ located at the center of the chest in the thoracic cavity and functions to supply blood to and from tissues giving the tissues oxygen and nutrients while taking away carbon dioxide and waste products. It is divided into 4 chambers and 2 chambers are separated by a muscular wall that prevents mixing of the blood.
Blood enters the heart via the vena cava which is divided into the superior vena cava that recieves blood from the upper region of the body that includes the head, neck and chest while the inferior vena cava recieves blood from the lower extremeties that includes the legs, the abdomen, the pelvic region and the thighs. The blood is deposited into the right atrium and is de-oxygenated. When it is deposited into the right atrium, the change in volume of the atrium and the expansion causes the valve to open and allow the de-oxygenated blood to flow into the right ventricle. The right ventricle then pumps the blood that is de-oxygenated to the lungs via the pulmonary artery which is the only artery that pumps de-oxygenated blood. In the lungs, carbon dioxide is removed and oxygen added to the blood and is taken to the left atrium which pumps the oxygenated blood to the left ventricle and then the left ventricle pumps the oxygenated blood to the rest of the body. The blood is then again taken through the body via the capillaries and the veins pick up the blood that has been removed of oxygen and added with carbon dioxide and transport the blood back to the heart via the vena cava. It enters the right atrium via both the inferior and superior vena cava and the de-oxygenated blood is circulated again to the lungs for oxygenation from the left ventricle.
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Level: High School
Subject: Biology
Topic: The Circulatory System
The statement “the right ventricle transports oxygenated blood to lungs” is false.
Further Explanation:
Heart of humans have four chamber namely right and left atrium also, right and left ventricle. The main purpose of heart is to pump blood throughout the body. Due to this constant beating of heart a pressure is maintained in the body which helps in the flow of the blood.
The heart receives the deoxygenated blood from the body parts. This blood reaches the right atrium by means of superior and inferior vena cava. The blood from right atrium is pushed to the right ventricle. So, the right ventricle always has deoxygenated blood. This blood is then pushed to the lungs by the means of pulmonary artery into the lungs.
This blood then gets oxygenated by the means of fusion through capillaries and returns back to the heart specifically, to the left side. This blood is then pumped to the organ systems where it provides the tissues with oxygen.
Important note-
a. The right side of the heart always has deoxygenated blood.
b. The left side of the heart has oxygenated blood.
Therefore, the statement that the right ventricle of the heart has oxygenated blood is not true.
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Answer Details:
Grade: Middle School
Subject: Biology
Chapter: Human Physiology
Keywords:
Heart, ventricle, atrium, right atrium, left atrium, right ventricle, left ventricle, oxygenated blood, deoxygenated blood, pulmonary artery, SA node, lungs, oxygenation of blood.
c) continue to move across the membrane in both directions.
d) move across the membrane to the inside of the cell.
2.An animal cell that is surrounded by fresh water will burst because the osmotic pressure causes (1 point)
A) water to move into the cell.
B) water to move out of the cell.
C) solutes to move into the cell.
D) solutes to move out of the cell. 3.Which of the following statements is true? (1 point)
A) During active transport, a material may be moved from an area of low concentration to an area of high concentration.
B) During passive transport, energy is used to move material against a concentration gradient.
C) During active transport, water is pumped across a membrane to equalize the concentration of salts on both sides.
D) During passive transport, osmosis allows salts to move from one side of the membrane to the other to equalize concentrations on both sides.
1. During diffusion, when the concentration of molecules on both sides of the membrane is the same, the molecules will C) continue to move across the membrane in both directions.
2. An animal cell that is surrounded by fresh water will burst because the osmotic pressure causes A) water to move into the cell.
3. A) During active transport, a material may be moved from an area of low concentration to an area of high concentration.
Further Explanation:
1. Diffusion is the movement of solutes from an area of high concentration to an area of low concentration until equilibrium is reached. At equilibrium, when there is no concentration gradient (i.e. the concentrations on both sides are equal), the molecules move in both directions, thereby ensuring the the concentration in both sides are maintained.
A) move across the membrane to the outside of the cell is FALSE because the concentration of molecules inside and outside the cell is the same, therefore, equilibrium will be disturbed if molecules move outward.
B) stop moving across the membrane is FALSE because equilibrium is not a static state but a dynamic state. Solutes are constantly moving in both directions to maintain the balance in concentration.
D) move across membrane to the inside of the cell is FALSE because there is no concentration gradient, therefore, movement will be on both directions to maintain equilibrium.
2. Osmosis is the movement of water from an area of high water potential (high solvent concentration, low solute concentration) to an area of low water potential (low solvent concentration, high solute concentration). Since fresh water has lower solute concentration than the inside of the cell, the cell will have low water potential while outside it has high water potential.
B) water to move out of the cell is FALSE because the direction of movement of water has to be from high water potential to low water potential. High water potential is outside the cell so water moves from the outside to inside of the cell causing it to burst.
C) solutes move into the cell is FALSE because osmosis involves the movement of water not solutes.
D) solutes move out of the cell is FALSE because osmosis involves the movement of water due to a difference in water potential.
3. Active transport is the movement of solutes from an area of low concentration to high concentration. Since this is going against the concentration gradient, energy is needed to cause the movement.
Passive transport is the movement of solute across a concentration gradient. No energy is needed for this as it is a spontaneous occurrence.
B) During passive transport, energy is used to move material against a concentration gradient is FALSE because energy is not required during passive transport.
C) During active transport, water is pumped across a membrane to equalize the concentration of salts on both sides is FALSE because solutes are moved across a membrane not water during active transport. Movement of water is called osmosis.
D) During passive transport, osmosis allows salts to move from one side of the membrane to the other to equalize is FALSE. Osmosis is a specific type of passive transport of water, not of salts.
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Keywords: Osmosis, Active Transport, Diffusion
1. During diffusion, when the concentration of molecules on both sides of a membrane is the same, the molecules will continue to move across the membrane in both directions.
2. An animal cell that is surrounded by fresh water will burst because the osmotic pressure causes water to move into the cell.
3. The statement “During active transport, a material may be moved from an area of low concentration to an area of high concentration” is true.
Further Explanation:
Diffusion is the process of movement of molecules from a high concentration to low concentration under influence of concentration gradient. The process is not energy driven as it does not directly involve the involvement of molecules such as ATP and GTP.
In biological systems the process of diffusion is a very dynamic process it happens at every instance of time. Every cell for it to function properly has to undergo diffusion that involves movement of chemical components across the cell wall. If there is a situation in which the concentration on both the side of the membrane is identical the molecules will keep on moving across the membrane without changing the concentration.
Osmosis is the process of movement of molecules across the semi-permeable membrane from area of high concentration to area of low concentration. An animal cell has high concentration of salts and other components while fresh water is free from it. When such a cell is introduced in fresh water, the water gushes into the cell. This gushing in excess results in the bursting of the cell.
A cell can undergo two types of transport one being active and other passive. Active transport is the phenomenon wherein a molecule is transported against the concentration gradient. This transport requires energy that is ATP. While on the other hand passive transport is a phenomenon which involves movement of solute with the concentration gradient thus they do not require energy molecules.
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Answer Details:
Grade: High School
Subject: Biology
Chapter: Cells and osmosis
Keywords:
Diffusion, osmosis, active transport, passive transport, concentration gradient, ATP, GTP, semi-permeable membrane, high concentration, low concentration, animal cell, osmotic pressure.
Answer:
anecdote
Explanation:
This report would contain his journey of change in his physiology during the stint of two months during which he took protein supplements before and after his workouts.The report will reveal how he become 200% stronger after he added the supplements to his diet. Therefore, the would be an anecdote of this amazing journey of transformation.
b. False