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sergeinik [125]
3 years ago
11

This is a chemical substance made by glands in the endocrine system that travel through the bloodstream and affects cells and ti

ssues throughout the body
Biology
1 answer:
Fiesta28 [93]3 years ago
6 0

Answer: Hormone

Explanation:

A hormone is a chemical substance produced in small quantities by an endocrine gland (such as thyroid gland in the neck) and carried in the blood to another tissue in the body where it acts as a messenger to control itsfunction.

Examples of hormones include:

- Thyroxine produced by the thyroid gland in the neck

- Testosterone produced by the testis in male humans

- Oestrogen produced by the ovary in female humans

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Which of the following is not normally filtered out of the blood in the kidney?
Anna11 [10]

Answer:

Your kidneys also remove acid that is produced by the cells of your body and maintain a healthy balance of water, salts, and minerals—such as sodium, calcium, phosphorus, and potassium—in your blood. Without this balance, nerves, muscles, and other tissues in your body may not work normally.

5 0
2 years ago
Describe how the functional units for beta carotene, xanthophyll, chlorophyll a, and chlorophyll b are different. be sure to ide
leonid [27]

The pigments have a similar structure of 40 carbon atoms covalently bonded in a chain. Carotenoids contain oxygen atoms in their chemical structure (retinyl functional group) while xanthophyll does not. This makes carotenoids more non-polar compared to xanthophylls, hence move farthest in chromatography paper using a nonpolar mobile phase. Chlorophyll pigment, on the other hand, has chlorin rings (which are larger) as functional units hence move slowly in chromatography.

Photosynthetic rates can be measured by either the amount of oxygen they consume per particular time period or the amount of carbon dioxide produced per particular time period. This is conducted while immersed in water so as to measure bubble rate formation in case of oxygen production or the change in water pH in the case of carbon dioxide consumption.

When autumn approaches, the amount sunlight received by the plant is reduced due to longer night than days. Deciduous trees have adapted by losing chlorophyll a and b pigments (most important in photosynthesis) during this time. This leaves a higher amount of the other red and yellow pigments hence making the leaves change from green to yellow-red.

It is believed that this is the result of an ancient endosymbiotic relationship between a protist and a eukaryotic cell. The protist generates energy that the eukaryotic can utilize in its growth and reproduction while the protist is sheltered. This relationship became obligatory symbiosis over time.






8 0
3 years ago
Method.<br> The recognized standard means of inquiry used by research scientists is the...
kompoz [17]

Answer:

The answer is scientific method.

Explanation:

The Scientific Method:

The Scientific Method is the standard process of experimentation and inquiry used to test hypothesis and answer scientific questions.

Every scientific question requires a specific form of the scientific method, with the variations ranging from the scope of the hypothesis to the experimental design and data analysis methods.

The steps of the scientific method are as follows:

1. Observation/Question

2. Hypothesis

3. Experimentation

4. Data analysis

5. Conclusion

The conclusion includes analysing the results and developing further hypotheses and testing them. If the hypothesis remains irrefutable, it becomes a theory. If the theory remains irrefutable after rigorous experimentation in various studies by multiple scientists, the theory becomes a law.

5 0
3 years ago
Which Stage of the cell cycle usually lasts the longest?
harina [27]
Interphase

A cell spends most of it's life in interphase, getting ready for mitosis or meiosis.
5 0
3 years ago
Read 2 more answers
During which phase do homlogous separate?
Cerrena [4.2K]

Answer:

anaphase I

Explanation:

Hope it helps!

8 0
3 years ago
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