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laila [671]
3 years ago
11

Enzymes act as catalysts because___

Biology
1 answer:
astraxan [27]3 years ago
7 0

Answer:

Explanation:

Enzymes are macromolecular biological catalysts that accelerate chemical reactions. The molecules upon which enzymes may act are called substrates, and the enzyme converts the substrates into different molecules known as products

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The human immunodeficiency virus (hiv) that causes the disease known as aids selectively infects ________ cells.
Furkat [3]

The human immunodeficiency virus (HIV) that causes the disease known as aids selectively infects helper T cells (CD4+).

This retrovirus also infects macrophages and dendritic cells. When CD4+ T cell numbers decrease below a critical level (due to the killing of this cells with different mechanisms), cell-mediated immunity is lost. As a result, the body becomes progressively more susceptible to infections, leading to the development of AIDS.

<span> HIV can be transmitted only via body fluids like blood, semen, pre-seminal fluid, rectal fluids, vaginal fluids, and breast milk, which means that people usually get or transmit HIV through sexual behaviours and use of the needle. For HIV infection, these fluids must come in direct contact with a mucous membrane or damaged tissue. Another way is to be directly injected into the bloodstream (from a needle for example).</span>

7 0
3 years ago
In what surgery subsection would you find the code for the incision and drainage of a nasal abscess using an external approach t
VMariaS [17]
The answer is Integumentary System. it is the organ framework that shields the body from different sorts of harm, for example, loss of water or scraped spot from outside. The framework involves the skin and its limbs. 
The integumentary system comprises of the skin, hair, nails, organs, and nerves. Its principal work is to go about as a hindrance to shield the body from the outside world. It additionally capacities to hold body liquids, ensure against ailment, dispense with squandering items, and direct body temperature.
4 0
3 years ago
Which of the following phase changes would release energy as it occurs?
bezimeni [28]


B evaporation because the partacals r moveing

 

6 0
3 years ago
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If a patient comes into the ER with heart attack-like chest pains and has high amounts of lactic acid in their blood , what is l
TEA [102]

Answer:

it's called I guess high blood pressure

Explanation:

due to a sudden shock or heavy loads carry that weaken the human body

7 0
3 years ago
This control of the internal environment is called homeostasis, and can be observed through the ____________ range of the body's
Semenov [28]

Answer: "homeostatic (dynamic equilibrium) range"

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Explanation:

Homeostasis is the control of internal environment , physical and chemical conditions maintained by the living systems. A body takes control of its internal environment in spite of external forces interruptions. It can be defined as the body's defensive mechanisms.

Homeostasis is maintained and controlled by the nervous system.

Homeostasis is for optimal functioning of the internal environment such as body pH, body temperature, fluid balance, chemical ions balance (calcium, sodium and potassium) and blood glucose.

Body temperature is normally about 37.5° C (98.6° F).

Salt concentration in body fluids is normally about 0.9%

Blood glucose is normally about 10 mg/ml.

A disturbed (imbalanced body as a result of external forces) body regains its haemostasis balance by

Activating reflexes that fight the disturbance and maintaining behaviours to counteract the disturbance.

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