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3 years ago

Describe in detail how gases are exchanged between the respiratory system and the circulatory system in the lungs

Biology

1 answer:

charle [14.2K]3 years ago

4 0

Answer:

Gas exchange

Explanation:

Gas exchange takes place in the millions of alveoli in the lungs and the capillaries that envelop them. As shown below, inhaled oxygen moves from the alveoli to the blood in the capillaries, and carbon dioxide moves from the blood in the capillaries to the air in the alveoli.

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Describe how people get energy from oil nonrenewable

Ratling [72]

Answer:

Oil can be burned to heat water, using the steam to generate power. Or, oil can be burned under pressure to produce exhaust gasses.

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3 years ago

Julie’s town uses single-stream recycling, so Julie puts all of her household recyclables in a single container to be picked up.

Lady bird [3.3K]

Answer:

to divide food cans from soft-drink cans

Explanation:

An electromagnet is based on the principle that current through a coil produces magnetic field. Magnetic objects such as Iron, nickel, cobalt or objects made from their combination are attracted by the magnet. This property is used to separate materials in recycling plant.

Steel (alloy of iron) would be attracted by the magnet where as aluminium would not be. Thus, steel food cans can be separated from the aluminium soft-drink cans using an electromagnet.

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3 years ago

An experiment was designed to test whether students could squeeze a clothespin more times in one minute after resting or after e

Rudik [331]

If a student rests and then squeezes a clothespin for one minute, will they be able to squeeze it more than someone that exercised before squeezing the pin for 1 minute?

Hope this helps!

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3 years ago

Read 2 more answers

A mineral cannot be _____.

irakobra [83]

Best Answer: Minerals cannot come from materials that were once a living thing.

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4 years ago

Match the cell adhesion or junction with the appropriate choice. Drag the terms on the left to the appropriate blanks on the rig

pav-90 [236]

Answer:

The missing options are:

A) protein subunits associated with gap junctions.

B) a type of adhesive junction connecting an epithelial cell to the basal lamina.

C) collection of fibrous intracellular attachment proteins.

D) create a permeability barrier.

E) button-like points of strong adhesion between two cells.

F) hollow cylinders associated with gap junctions.

G) type of adherens junction connecting cells with the extracellular matrix.

H) intermediate filaments associated with plaques.

I) collection of adherens junctions particularly associated with epithelial cells.

J) type of adhesive junction containing actin microfilaments.

K) specialized modifications of the cell membrane in which two cells come together in multicellular organisms.

L) point of cytoplasmic contact between two cells.

M) anchors cytoskeleton of one cell with that of a neighboring cell.

Set of answers are:

A) protein subunits associated with gap junctions. Conexin

B) a type of adhesive junction connecting an epithelial cell to the basal lamina. Hemidesmosome

C) collection of fibrous intracellular attachment proteins. Plaque

D) create a permeability barrier. Tight junctions

E) button-like points of strong adhesion between two cells. Desmosome

F) hollow cylinders associated with gap junctions. Connexons

G) type of adherens junction connecting cells with the extracellular matrix. focal adhesion

H) intermediate filaments associated with plaques. Tonofilaments

I) collection of adherens junctions particularly associated with epithelial cells.

J) type of adhesive junction containing actin microfilaments. Adherens junctions

K) specialized modifications of the cell membrane in which two cells come together in multicellular organisms. Cell junctions

L) point of cytoplasmic contact between two cells. Gap junction

M) anchors cytoskeleton of one cell with that of a neighboring cell. Adhesive junction

Explanation:

Connexin: is a transmembrane protein that forms the gap junctions, they are also called gap junctions proteins.

Hemidesmosome junctions: these types of junctions are in the epidermis, specifically between the epithelial cells and the basal lamina of the epidermis.

Plaque: they are part of the adherens junctions, they are fibrous proteins that are attached to certain points of the extracellular matrix.

Tight junctions: are junctions between two epithelia, they are very restrictive and do not allow the passage of soluble molecules creating a permeability barrier.

Desmosomes: are very strong cell to cell junctions on the lateral sides of plasma membranes. They are in tissues that are under mechanical stress, such as the cardiac muscle.

Connexons: is a pore made of six connexin proteins in a gap junction. Connexons are the ones that connect two cells in gap junctions.

Focal adhesions: They connect the extracellular matrix with the cell, regulatory signs and mechanical force is transmitted through them.

Tonofilaments: tonofilaments are the ones that are associated with a plaque in adherens junctions, they are in epithelial tissues.

Adherens junctions: are cell to cell junctions where the cytoplasmatic face is connected to the actin cytoskeleton. They appear as spots forming the plaque or as zonula adherens, which are actin bands around the cell.

Cell junctions are protein complexes that connect two cells that are next to each other or a cell with the extracellular matrix. They have a lot of functions, such as pas information from cell to cell, or the exterior, form a barrier, synchronize cells, etc.

Gap junctions: are connections between the cytoplasm of two cells, molecules and, ions pass directly from one cell to the other.

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3 years ago