What are the "chemical messengers" that coordinate and direct specific activities of the body?

Answers

Answer 1

Answer: The correct answer is hormones.
Hormones are signaling molecules which are produced by glands and transported by the circulatory system to the target organs. The functions of the hormone are very diverse, they regulate physiology and behavior. Hormones have different chemical structures, eicosanoids, steroids, and amino acid/protein derivatives. The hormones can be the part of the endocrine signaling system (transported via blood). or produced by cells that affect the same cell (autocrine or intracrine signaling) or nearby cells (paracrine signaling).

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Which of these can be found in both gymnosperms and angiosperms
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Most of the energy resources used to generate electricity are renewable true or false

Answers

I would say that this statement is true.

I WILL MARK BRAINIEST IF ITS RIGHTWhich are functions of the stomata in the leaves of seed plants? Check all that apply.

reduce water loss
make glucose
absorb sunlight
take in carbon dioxide
produce oxygen

Answers

Answer:

Reduce water loss

Explanation:

Stomata allow a plant to take in carbon dioxide, which is needed for photosynthesis. They also help to reduce water loss by closing when conditions are hot or dry. Stomata look like tiny mouths which open and close as they assist in transpiration.

Sorry if it's wrong

produce oxygen and reduce water loss i believe

Why is soil acidity associated with nutrient depletion?

Answers

When soil becomes acidic H+ ions replace any nutrients that are cations. Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

Why does the ratio of surface area to volume increase with the decrease in cell size?

Answers

The surface to volume ratio decreases as the cell size increases.

Which of the following is a limiting factor in lotic ecosystems?a.

pH

b.

salinity

c.

light intensity

d.

all of the above

Answers

Factors that margins production are considered limiting factors. Temperature, nutrients, pH, salinity. and light are the most considered limiting factors in an ecosystem. Among the aforementioned factors, there are only three that are considered as universal limiting factors. These are: temperature; pH; and, salinity. These 3 factors affect the growth of organisms in the ecosystem, as well as their growth development. According to some research, temperature affects the physiochemical limit of an organism. Salinity on the other hand affects the organisms' mobility, (organisms vary salt tolerance) or suspends cell division. The pH of water also affects the organisms' physiological performance, specifically the aquatic organisms. The answer to this question then is letter D," all of the above".

to sum that unnecessarily long answer up the answer is D.) all of the above

In the name Acer rubrum, the word rubrum designates the species.(t or f)

Answers

The statement is - True.

In the name Acer rubrum, the word rubrum is defining the species, while the acer is defining the genus.

Acer rubrum is actually the scientific name for the red maple tree, found mostly in the eastern half of the United States, being a native species to the North American continent.

The red maple is a tree in the family of Sapindaceae, and in the order of Sapindales.

It is considered as the most abundant native tree in the United States, and it is also one of the most used trees in the parks and homes in big portion of the United States.

Its true, according to the Binomial Classification Naming System, The second name in given is considered the species.
More information: The first name is the genus an organism belongs to.

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Give two other factors that may affect a person's metabolic rate

Which of the following statements best describes chromosomes?a. Humans have more than 460 chromosomes in every cell of the body. b. Chromosomes are threadlike structures that carry genetic information. c. Humans receive the majority of their chromosomes from their mother. d. Chromosomes are arranged in 20 distinct pairs in the human body.