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irakobra [83]
3 years ago
7

A birds breastbone has a ridge called the ____.

Biology
1 answer:
Nataly [62]3 years ago
6 0
The ridge of a birds breastbone is called a keel
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The concentration of N2 in blood at 37 °C (body temperature) and atmospheric pressure (partial pressure of N2 = 0.80 atm) is 0.0
devlian [24]

Answer:

volume  = 0.285 L

Explanation:

Henry constant is given as

Henry constant  =  \frac{C}{P}

Where C  is concentration

P is atmospheric pressure

Henry\ constant = \frac{0.00056}{0.80} = 0.0007 M/atm

when atmospheric pressure 4 atm

solubility = K_H\times P

              = 0.0007 \times 4 = 0.0028 M

In 5 litere blood , moles of N_2 = Molarity \times volume

                                                     = 0.0028 \times 5 = 0.014

At surface moles  = 0.0056 \times 5 = 0.0028

Moles of N_2 release = 0.014 - 0.0028 = 0.0112

Mass of N_2 = 0.0112 \times 28 = 0.314 g

T = 37 + 273 = 310 K

VOLUME = \frac{nRT}{P}

= \frac{0.0112\times 0.0821\times 310}{1}

volume  = 0.285 L

6 0
3 years ago
Some antacid drugs block histamine receptors, resulting in reduction of the production and excretion of stomach acid. These drug
katrin2010 [14]

Answer:

A) parietal cells

Explanation:

Parietal cells are the epithelial cells of the stomach that have the function to secrete hydrochloric acid (HCl) and intrinsic factor. Parietal cells contain canaliculi – secretory network for the secretion of HCl via active transport.

Parietal cells are regulated via several factors such as acetylcholine, gastrin and histamine. So, if histamine receptors are blocked via antacid drugs , the secretion of the acid will be reduced.

7 0
3 years ago
Rooted plants are most likely found in which aquatic zone?
wel

Answer:

Littoral zone

Explanation:

8 0
3 years ago
Read 2 more answers
The first eukaryotes evolved 2.5bya.<br> A.True<br> B. False
faltersainse [42]
It would be A. True. I hope this helped you. Have a good afternoon
5 0
3 years ago
Most dietary ______ are too large to be absorbed directly into the capillaries from the small intestine; they must be absorbed i
pashok25 [27]

Most dietary <u>fats </u>are too large to be assimilated and absorbed into the capillaries but they are otherwise absorbed into the lacteals.

<h3>What are dietary fats?</h3>

Dietary fat is necessary for good health. It offers you strength and aids in the absorption of vitamins by your body. Dietary fat has about twice as much energy per gram as carbs and protein.

In the villi ( an organ in the small intestine) is located the lacteal which is a lymphatic capillary that absorbs and assimilates dietary fats. 

Most nutrients are also absorbed through the blood capillaries, but as for dietary fats and fat-soluble vitamins, they are absorbed by the lacteals.

Learn more about dietary fats here:

brainly.com/question/988503

7 0
2 years ago
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