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Rasek [7]
3 years ago
13

what serves as a standard of comparison to evaluate the effect of the independent variable on the dependent variable

Biology
1 answer:
Elden [556K]3 years ago
6 0
Experiments are usually compared against a control group where there was no independent variable applied to the dependent variable.
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Who is clinically dead? helga, who exhibits no cortical functioning naomi, who is not breathing and whose heart is not beating j
Anna35 [415]

Answer: naomi, who is not breathing and whose heart is not beating

A person is considered clinically dead if their blood circulation and breathing is stopped because those two is needed to sustain live. Notice that the diagnosis need both of them, so only one of them is not enough. Helga and John has no problem in breathing and circulation, so they wont be considered clinically dead.

5 0
3 years ago
How many atoms are in this picture?<br> Na3C6H507
olganol [36]

Answer:

Explanation:

Trisodium citrate has the chemical formula of Na3C6H5O7. It is sometimes referred to simply as "sodium citrate", though sodium citrate can refer to any of the three sodium salts of citric acid. It possesses a saline, mildly tart flavor. It is mildly basic and can be used along with citric acid to make biologically compatible buffers

Sodium citrate is chiefly used as a food additive, usually for flavor or as a preservative. Its E number is E331. Sodium citrate is employed as a flavoring agent in certain varieties of club soda. It is common as an ingredient in bratwurst, and is also used in commercial ready-to-drink beverages and drink mixes, contributing a tart flavor. It is found in gelatin mix[clarification needed], ice cream, yogurt, jams, sweets, milk powder, processed cheeses, carbonated beverages, and wine[citation needed], amongst others.

8 0
3 years ago
Which cell junctions form a barrier to the passage of materials?
kkurt [141]

Answer:

The correct answer is - tight junctions.

Explanation:

Tight junctions are one of the cell-cell junctions that make a barrier to the passage of material which is a present in epithelia. This barrier is impermeable to most of the materials with soluble molecules. This barrier is made up of the occludin and claudin proteins.

Tight epithelia have tight junctions and examples of such junctions are the distal convoluted tubule or DCT, and the collecting duct of the nephron in the kidney.

Thus, the correct answer is - tight junctions.

8 0
3 years ago
A tumor composed of epithelium is an epitheli _______.
Evgen [1.6K]
Sarcoma- 'Sarcoma' means malignant tumour.
3 0
3 years ago
Read 2 more answers
Each year, approximately 5,000 metric tons of mercury compounds are released into the environment either naturally or from human
liraira [26]

The health of people damaged when the mercury is released into the atmosphere because of its toxic nature.

<h3>What is the effect of mercury?</h3>

Mercury contamination is a great threat to public health and environmental because methylmercury easily enters the bloodstream which leads to damaged brain. It is considered toxic for the humans due to its damaging nature.

So we can conclude that the health of people damaged when the mercury is released into the atmosphere.

Learn more about mercury here: brainly.com/question/879

#SPJ1

7 0
2 years ago
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