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jeka57 [31]
3 years ago
13

Is the following an example of a. Negative feedback loop b. Positive feedback loop Hydrochloric acid and pepsin are enzymes secr

eted by cells in your stomach to digest proteins. The presence of partially digested protein in the stomach triggers the secretion of more hydrochloric acid and pepsin. Thus, once digestion begins, it becomes a self-accelerating process. Is the following an example of a. Negative feedback loop b. Positive feedback loop
Biology
1 answer:
Keith_Richards [23]3 years ago
5 0

Answer:  This is a positive feedback loop.

Explanation:

The protein digestion in the body is an example of the positive feedback. The gastric secretions is stimulated chiefly by the action of three chemicals.

These chemicals are acetylcholine, histamin and gastrin. These chemicals stimulate the parietal cells to secrete HCL and intrinsic factors.

The chief cells secrete pepsinogen in response to the gastrin and ACh. As the dietary proteins are digested, it breaks down the amino acids and peptides.

This stimulates the G cells of the stomach to secrete more gastrin. This is how the positive feedback loop for the protein digestion works.

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Mixing alcohol and prescribed medication is a good idea; this helps the medication get in your system faster, thus aiding in the
Mamont248 [21]
This is totally false, the combination of the two could result in overdose or possibly death.
Hope this helps you, please remember to say thanks.
5 0
3 years ago
Bacteria undergo mitosis and meiosis in order to reproduce and increase genetic recombination.
Salsk061 [2.6K]

Answer:

The correct answer is (b)-False

Explanation:

Bacteria do not undergo meiosis or mitosis to reproduce and increase its genetic recombination. To increase their genetic recombination bacteria take the help of horizontal gene transfer through which it gets the genetic material of another bacteria. This new gene helps bacteria to survive in the challenging environment.

Bacteria divide through binary fission in which one cell of bacteria divides into two equal daughter cell each having its genetic material because genetic material of parent cell segregate equally into both the cell.  

Therefore bacteria do not undergo meiosis or mitosis.

8 0
3 years ago
4. Describe similarities and/or differences in compartmentalization between prokaryotic and eukaryotic cells. 5. Sketch the proc
Mrac [35]

Answer:

Eukaryotes:

-Organisms with a well defined nucleus are known as eukaryotes. such cells are called as eukaryotic cells.

- Their nucleus is enclosed within the nuclear membrane.

- They do not posses a mitochondria.

- The cell wall is the outer most layer of a eukaryotic cell (only plant cells have a cell wall)

- The cells are divided by a process called mitosis.

Eg: Plants, Animals.

Prokaryotes:

- Organisms without a well defined nucleus are known as prokaryotes. Such cells are called as Prokaryotic cells.

- They lack nuclear membrane.

- Mitochondria, Golgi bodies, chloroplast and lysosomes are absent.

- The genetic material (DNA) is present on the chromosome.

Eg: Every organism coming under the kingdom monera.

Explanation:

7 0
2 years ago
How does flouride cause kidney deasies
SCORPION-xisa [38]

Answer:

Hepato- and nephrotoxicity of fluoride have been demonstrated in animals, but few studies have examined potential effects in humans. This population-based study examines the relationship between chronic low-level fluoride exposure and kidney and liver function among United States (U.S.) adolescents. This study aimed to evaluate whether greater fluoride exposure is associated with altered kidney and liver parameters among U.S. youth.

This cross-sectional study utilized data from the National Health and Nutrition Examination Survey (2013–2016). We analyzed data from 1983 and 1742 adolescents who had plasma and water fluoride measures respectively and did not have kidney disease. Fluoride was measured in plasma and household tap water. Kidney parameters included estimated glomerular filtration rate (calculated by the original Schwartz formula), serum uric acid, and the urinary albumin to creatinine ratio. Liver parameters were assessed in serum and included alanine aminotransferase, aspartate aminotransferase, alkaline phosphatase, blood urea nitrogen, gamma-glutamyl transferase, and albumin. Survey-weighted linear regression examined relationships between fluoride exposure and kidney and liver parameters after covariate adjustment. A Holm-Bonferroni correction accounted for multiple comparisons.

The average age of adolescents was 15.4 years. Median water and plasma fluoride concentrations were 0.48 mg/L and 0.33 μmol/L respectively. A 1 μmol/L increase in plasma fluoride was associated with a 10.36 mL/min/1.73 m2 lower estimated glomerular filtration rate (95% CI: −17.50, −3.22; p = 0.05), a 0.29 mg/dL higher serum uric acid concentration (95% CI: 0.09, 0.50; p = 0.05), and a 1.29 mg/dL lower blood urea nitrogen concentration (95%CI: −1.87, −0.70; p < 0.001). A 1 mg/L increase in water fluoride was associated with a 0.93 mg/dL lower blood urea nitrogen concentration (95% CI: −1.44, −0.42; p = 0.007).

Fluoride exposure may contribute to complex changes in kidney and liver related parameters among U.S. adolescents. As the study is cross-sectional, reverse causality cannot be ruled out; therefore, altered kidney and/or liver function may impact bodily fluoride absorption and metabolic processes.

hope this helps

rate brainiest

6 0
2 years ago
Latex caulking should be cleaned up with which of these? a.Water b.Mineral spirits
gogolik [260]
Mineral spirits or rubbing alcahol
4 0
3 years ago
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