All categories

2 years ago

What are the effects of tobacco smoke on the gas exchange system?

Biology

2 answers:

lesantik [10]2 years ago

7 0

Answer:

The effects of tobacco smoke on the respiratory system include: irritation of the trachea (windpipe) and larynx (voice box) reduced lung function and breathlessness due to swelling and narrowing of the lung airways and excess mucus in the lung passages.

grigory [225]2 years ago

3 0

Over time, the toxins from inhaled cigarette smoke break the thin walls of alveoli, leaving larger, less efficient air sacs. The sacs also begin to lose their bounce, making it harder to bring in the oxygen and expel carbon dioxide. 3 Both can become partially trapped in the lungs.

You might be interested in

A local area's short-term atmospheric condiſions are known

SashulF [63]

Answer:

O weather, climate

Explanation:

A local area's short-term atmospheric conditions are known as weather while long term conditions are known as climate.

I hope this helped :)

7 0

2 years ago

All organisms must have water for survival. If a drought causes the water in an ecosystem to become scares the organisms in this

strojnjashka [21]

Answer:

C, a decrease in metabolic activity

Explanation:

In times of drought, there would be a reduction in the metabolic activity of an organism.

Most organisms found in very dry climates have adaptation to accommodate a period of drought.
Water is essential for the metabolic processes in an organism.
A deficiency of water will reduce these life activities.
The organism can become inactive as a result of this.

3 0

3 years ago

State and explain components of blood

ELEN [110]

Answer:

It has four main components: plasma, red blood cells, white blood cells, and platelets. Blood has many different functions, including transporting oxygen and nutrients to the lungs and tissues

Explanation:

Plasma is the main component of blood and consists mostly of water, with proteins, ions, nutrients, and wastes mixed in. Red blood cells are responsible for carrying oxygen and carbon dioxide. Platelets are responsible for blood clotting. White blood cells are part of the immune system and function in immune response.

5 0

2 years ago

If t=talk and t= short what will be the physical appearance of the offspring in the cross

qwelly [4]

Answer:

If T=tall and t=short, what will be the physical appearance of the offspring in the cross?

Explanation:

It looks like your question is incomplete, so I'll try to fill in the blanks.

The offspring will depend on the parents. Each parent will need two alleles, so each parent would have to be TT (tall), Tt (tall) or tt (short--this is the only way to have a short individual).

Here are all the possible crosses:

TT X TT = 100% TT (all tall)

TT X Tt = 50% TT, 50% Tt (all tall)

TT X tt = 100% Tt (all tall)

Tt X Tt = 25% TT (tall), 50% Tt (tall), 25% tt (short)

tt X tt = 100% tt (short)

Note that if there is a T present in the genotype (TT or Tt), that individual will be tall. The only way to produce short offspring is for the both parents to have a copy of the short allele (t).

3 0

2 years ago

A normal chromosome and its homolog carrying an inversion are given. The dot (•) represents the centromere. Normal: M N • O P Q

AlladinOne [14]

Answer:

Pericentric, inversion loop.

Explanation:

Chromosomal inversion may be defined as the rearrangement of chromosome that may get reversed and attached. Two main types of inversion are pericentric inversion and paracentric inversion.

The pericentric inversion involves the inversion of chromsome and centromere is involved in this inversion. M Q P O • N R S T , in this case centromere is present and shows the pericentric inversion. The structure that forms during the synapsis is known as inversion loop.

Thus, the answer is pericentric, inversion loop.

7 0

3 years ago