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just olya
2 days ago
14

Rachel is convinced that her occasional headaches are caused by a malignant brain tumor. although several physicians have assure

d her that she has no serious physical problem, rachel continues to seek medical attention for a brain tumor. her behavior provides an example of
Biology
2 answers:
enyata [1.7K]2 days ago
7 0
Just to inform you, the person above is 100% accurate.
s2008m [1.6K]2 days ago
4 0
Rachel's actions exemplify Hypochondriasis. This condition entails an excessive preoccupation with the fear of having a serious illness, often featuring anxieties that slight bodily or mental symptoms might signal a significant health issue, engaging in constant self-checks and self-diagnoses, alongside a fixation on one’s physical condition. 
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Three lab groups carried out an experiment to identify the correct molarities for five solutions. Each unknown contained one of
inysia [1674]

Answer:

The rise in mass noted is likely attributed to the osmosis of water molecules from an unidentified solution A.

Explanation:

Osmosis can be understood as the movement of water molecules from a region with a higher concentration to one with a lower concentration along the concentration gradient. Consequently, this process occurs without the need for energy.

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13 days ago
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The fact that choanoflagellates and collar cells of sponges resemble each other supports the inference that ________. Group of a
Rainbow [1731]
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6 0
3 days ago
Convert enzyme concentrations of 2.5%, 5.0%, and 10% to ppt units.
lana [1794]

Answer:

2.5 x 10¹⁰ ppt

5.0 x 10¹⁰ ppt

1.0 x 10¹¹ ppt

Explanation:

The term ppt denotes parts per trillion, meaning how many parts of the enzyme are present in 1 trillion parts. Percentage denotes the number of parts per 100 units. To convert the provided values from percentage to ppt:

\frac{2.5}{100}=\frac{a}{1,000,000,000,000}\\a=2.5 *10^{10}\ ppt\\\\\frac{5.0}{100}=\frac{b}{1,000,000,000,000}\\b=5.0 *10^{10}\ ppt\\\\\frac{10}{100}=\frac{c}{1,000,000,000,000}\\c=1*10^{11}\ ppt

The concentrations in ppt are:

2.5 x 10¹⁰ ppt

5.0 x 10¹⁰ ppt

1.0 x 10¹¹ ppt

7 0
1 month ago
James is making models of plant and animal cells using objects supplied by his teacher to represent organelles. For one cell, he
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The answer is B. Animal cells lack a cell wall, while the shoebox signifies the cell wall. I hope this information has been helpful![[TAG_1]] 
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15 days ago
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