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3 years ago

Glucose travels in the plasma or liquid part of

Biology

1 answer:

djverab [1.8K]3 years ago

3 0

Answer:

Explanation:

Glucose is a sugar, highly soluble in water because it has lots of polar hydroxyl groups (-OH) which can form hydrogen-bonds with water molecules. These types of bonds are intermolecular forces which are present in other macromolecules like the DNA or proteins.

Cholesterol and triglycerids are lipids. These have long chains of hydrocarbons, which are non polar and therefore insoluble in water.

Blood is made of a solid and a liquid part. The solid part contains cells. The liquid part (plasma), is made of water, salts, and proteins. Glucose and cholesterol/triglycerids travel in the liquid part of the blood, in an aqueous environment. Because the lipids are not soluble, they need to travel with a carrier protein that keeps them protected from the surrounding water.

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The _____ sends out an electrical impulse that regulates the heartbeat.

olga nikolaevna [1]

Answer: The SA node

Answer choices are:

A. The AV node

B. The SA node

C. The purkinje fibers

D. The AV bundle

The SA node is the heart's natural pacemaker consisting of a cluster of cells located in the upper part of the wall of the right atrium. (the right upper chamber of the heart). The electrical impulses are produced and sent out from there to regulate heartbeat. This is also called the sinus code.

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3 years ago

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Protists are very diverse, and many different classification schemes have been used to define relationships between the protists

andrey2020 [161]

Answer:

D. heterotrophic by ingestion, pseudopods

Explanation:

Protists are generally classified as all eukaryotic organisms that are not plants, animals or fungi. Example is amoeba, paramecium etc.They may be unicellular or multi cellular in nature.Most exist in colonies.

Their mode of nutrition can be photosynthetic or hetrotrophic. Hetrotrophic protists can be divided into phagotrophs and osmotrops/saprotrophs. The phagotrophs makes use of the cell body to engulf the food materials as in amoeba ,carry out extracellular digestion before swallowing it.

Osmotrops absorbed dissolved food from surrounding liquid environments directly. (Some photosynthetic protists can also be heterotrophic.

Amoeboid movement is the mode of locomotion of protists and some other eukaryotes. It involved the protrusion of cytoplasm, which exert pressure on the cell membrane to form pseudopodia and the posterioly evolved Uropods. 

 

Sol-gel theory has been proposed to expalin this movements, The ectopalsm of amoeba is gelly-like , while the endiplams is less viscpus and said to be sol. The interchange of the cytoplasmic fluis between the endo-and ecto plasm gives the SOL-GEL propulsion of the protopalms for the amoebic moveemnts .

The false feet(psuedopodium) drags the amoeba along in the direction of the flow of the cytoplasm.

Therefore option D is the right option

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3 years ago

Do saturated fats have single carbon-to-carbon bonds or at least one double carbon-to-carbon bond?

Sladkaya [172]

Answer:

Saturated fats contain only single carbon bonds in the carbon chain

Explanation:

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mestny [16]

Answer:

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Explanation:

Hope this helps :)-Mark Brainiest Please! Thanks!!

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3 years ago

__________ is also known as zero waste.

Xelga [282]

<h2>Answer:</h2><h2>Option B </h2><h2>I think</h2>

Zero Waste: The conservation of all resources by means of responsible production, consumption, reuse, and recovery of products, packaging, and materials without burning and with no discharges to land, water, or air that threaten the environment or human health.”

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2 years ago

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