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qaws [65]
1 year ago
12

Samples of three unknown liquids have been obtained. Calculate the density of each. Show your work!

Biology
2 answers:
mylen [45]1 year ago
8 0

Answer:c

Explanation:

krok68 [10]1 year ago
7 0

- sample C has a mass of 12.0 g and a volume of 3.0 ml

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In what form is most of the carbon dioxide present in our blood transported? Group of answer choices As carbon dioxide dissolved
Flura [38]

Answer:

As bicarbonate ions present in blood plasma

Explanation:

Most carbon dioxide produced by tissues (approximately 75%) is transported in the blood to the lungs as bicarbonate ions (HCO₃⁻).

<u>The chemical equilibrium is:</u>

<h3>CO₂ + H₂O   ↔   H₂CO₃   ↔   H⁺ + HCO₃⁻</h3>

                            carbonic acid

In the lungs, the conversion is reversed, so CO₂ diffuses from the blood into the alveoli and then it's exhaled.

Although most CO₂ is reversibly converted to bicarbonte, approximately 5% is simply dissolved in the blood plasma and about 20% is bound with hemoglobin.

This conversion to bicarbonate ions keeps the partial pressure of CO₂ in blood plasma low, facilitating its diffusion away from the tissues.

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3 years ago
What causes a branch in cladogram
balandron [24]

Answer:

(look at explanation)

Explanation:

A new branch in a cladogram is given when a new trait arises that sets apart those organisms from the rest of the clade. ... Although the organisms within a clade and their shared ancestor will have similar characteristics each branch will have a unique character or trait.

4 0
3 years ago
The stages of mitosis were originally defined by cellular features observable through a light microscope.
Brrunno [24]

Answer: TRUE

Explanation:

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--> PROPHASE: when viewed under a light microscope, each chromosome shortens and thickens and is seen to consist of two chromatids. The Centriole begin to separate.

--> METAPHASE: The nuclear membrane disappears, a spindle forms, the chromosomes line up across the middle of the cell and become attached to the spindle fibres at their centromeres.

--> ANAPHASE: The sister chromatids are pulled apart to opposite ends of cell as the spindle fibres contract.

--> TELOPHASE: A nuclear membrane forms around each set of chromatids, and the cell divides into two daughter cells.

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3 years ago
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3 years ago
Name two structural characteristics that triglycerides and phospholipids have in common.
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Two structural characteristics that triglycerides and phospholipids have in common are that they are both composed of fatty acids? The fatty acids are attached to a molecule called glycerol and fatty acyl tails
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