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AC-HPAT Biology Questions With 100% Correct Answer|Graded A+
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AC-HPAT Biology Questions With 100% Correct Answers. Pancreas and Type 1 diabetes The pancreas is the organ that produces insulin, and it plays a major role in regulating blood glucose levels. Type 1 diabetes occurs when the pancreas does not make enough or any insulin. How does insulin work...

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  • April 16, 2024
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  • 2023/2024
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AC-HPAT Biology Questions With 100%
Correct Answers.
Pancreas and Type 1 diabetes
The pancreas is the organ that produces insulin, and it plays a major role in regulating blood glucose
levels. Type 1 diabetes occurs when the pancreas does not make enough or any insulin.


How does insulin work in diabetes?
Insulin pumps are small, computerized devices that mimic the way the human pancreas works by
delivering small doses of short acting insulin continuously (basal rate). The device also is used to
deliver variable amounts of insulin when a meal is eaten (bolus)


chemotherapy
Chemotherapy is a drug treatment that uses powerful chemicals to kill fast-growing cells in your body.
Chemotherapy is most often used to treat cancer, since cancer cells grow and multiply much more
quickly than most cells in the body. It targets cells that grow and divide quickly, as cancer cells do.
Unlike radiation or surgery, which target specific areas, chemo can work throughout your body. But it
can also affect some fast-growing healthy cells, like those of the skin, hair, intestines, and bone
marrow.


How can stem cells be used in the treatment of leukemia? And how effective is it?
Stem cell transplant replaces the leukemia cells in your bone marrow with new ones that make blood.
Your doctor can get the new stem cells from your own body or from a donor. Stem cell
transplantation is effective against leukemia. In many cases, however, the transferred immune cells of
the donor also attack the recipients' healthy tissue—often with fatal consequences. ... Stem cell
therapy offers people suffering from leukemia or bone-marrow cancer the chance of full recovery.


Why is laser technology more effective than conventional surgery in removing cancerous tumours?
Lasers are more precise than standard surgical tools (scalpels), so they do less damage to normal
tissues. As a result, patients usually have less pain, bleeding, swelling, and scarring. With laser
therapy, operations are usually shorter.


Urinary system
· The urinary system, also known as the renal system or urinary tract, consists of the kidneys, ureters,
bladder, and the urethra. The purpose of the urinary system is to eliminate waste from the body,
regulate blood volume and blood pressure, control levels of electrolytes and metabolites, and
regulate blood pH


Nanotechnology
Nanotechnology can provide rapid and sensitive detection of cancer-related molecules, enabling
scientists to detect molecular changes even when they occur only in a small percentage of cells.


Mercury poisoning
The most common cause of mercury poisoning is from consuming too much methyl mercury or
organic mercury, which is linked to eating seafood. Small amounts of mercury are present in everyday
foods and products, which may not affect your health. Too much mercury, however, can be
poisonous. Mercury salts affect primarily the gastrointestinal tract and the kidneys, and can cause
severe kidney damage; however, as they cannot cross the blood-brain barrier easily, these salts inflict
little neurological damage without continuous or heavy exposure.

, How can ultraviolet light from the sun affect the cells of the human eye?
UV rays may lead to macular degeneration, a leading cause of vision loss for older Americans. UV rays,
especially UV-B rays, may also cause some kinds of cataracts. A cataract is a clouding of the eye's
natural lens, the part of the eye that focuses the light we see.


Macromolecules
Macromolecules are large molecules composed of thousands of covalently connected atoms.
Carbohydrates, lipids, proteins, and nucleic acids are all macromolecules. Macromolecules are formed
by many monomers linking together, forming a polymer.


passive transport
Passive transport is a movement of ions and other atomic or molecular substances across cell
membranes without need of energy input. Unlike active transport, it does not require an input of
cellular energy because it is instead driven by the tendency of the system to grow in entropy.


active transport
active transport is the movement of molecules across a membrane from a region of lower
concentration to a region of higher concentration—against the concentration gradient. Active
transport requires cellular energy to achieve this movement.


catalyst
Catalyst: a substance that increases the rate of a chemical reaction without itself undergoing any
permanent chemical change.


fluid mosaic model
describes the structure of the plasma membrane as a mosaic of components —including
phospholipids, cholesterol, proteins, and carbohydrates—that gives the membrane a fluid character.
The proportions of proteins, lipids, and carbohydrates in the plasma membrane vary with cell type


Effect of lead on nerve cells
Lead poisoning can cause peripheral nerve damage: this can cause muscle weakness and problems
with the sense of touch. When researchers examine these damaged nerves, they find that the myelin
insulation is often gone, and the axons are destroyed. These changes prevent nerves from
transmitting messages properly.


the effect of electromagnetic radiation on brain
Reported symptoms include headaches, anxiety, suicide and depression, nausea, fatigue and loss of
libido. To date, scientific evidence does not support a link between these symptoms and exposure to
electromagnetic fields.


Carbohydrates function
Carbohydrates are the most abundant biomolecule on Earth. Living organisms use carbohydrates as
accessible energy to fuel cellular reactions and for structural support inside cell walls. Cells attach
carbohydrate molecules to proteins and lipids, modifying structures to enhance functionality.


Proteins function

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