In vertebrates, chemical messengers called hormones are secreted by the _____ system. endocrine excretory hormonal pituitary

Answers

Answer 1
Answer: The correct answer should be the endocrine system.

Hormones are secreted by endocrine glands in endocrine systems. Opposite of this would be the exocrine system consisting of exocrine glands.
Answer 2
Answer:

The correct answer is endocrine system.

Endocrine system in vertebrates consists of endocrine glands. Endocrine glands do not have ducts thus, they are also called as ductless glands. The glands which secretes enzymes are glands with duct, called exocrine glands.    Therefore, the hormones secreted from endocrine glands are directly poured into the blood for the action on target organs. Examples of endocrine glands are pituitary gland, thyroid gland, adrenal gland.  


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How are water currents similar to air currents? How are they different?

Answers

Water currents and air currents are similar because they are both a mechanical currents that involves the physical movements of particles. How are they different? water currents is composed of liquid material while air current is composed of gas material. However, they are both controlled by density.

All BUT ONE statement describes an advantage of meiosis.

Answers

Answer:

meosis

Explanation:

these are reduction cells

helps in formation of gamets

it is known as rrductional cells

it produces twice the number chromosomes aa the mother cell.

reduction of cells within meiosis

Which nucleic acid base is found in RNA but NOT in DNA?

Answers

Answer: It's uracil!

Explanation: The four nirogen bases in DNA are adenine, guanine, thymine, and cystosine. In RNA, thymine is simply replaced with uracil.

Why is it that species cannot occupy the same niche in the same habitat at the same time?

Answers

Because the species are territorial, no two species can be in the same niche at any given time

Answer:

Two species occupying the same niche will be competing for the same food resource. Since the resource is limited, the stronger species will have more access to the food resource and will drive the other species to exclusion from that niche.

Explanation:

edge response answer ^

True or False: enzyme inhibitors act as drugs, antibiotics, and pesticides.

Answers

Answer:

Since blocking an enzyme's activity can kill a pathogen or correct a metabolic imbalance, many drugs are enzyme inhibitors. They are also used in pesticides.

Explanation:

Answer:

True

Explanation:

Since blocking an enzyme's activity can kill a pathogen or correct a metabolic imbalance, many drugs are enzyme inhibitors. They are also used in pesticides. The binding of an inhibitor can stop a substrate from entering the enzyme's active site and/or hinder the enzyme from catalyzing its reaction.

A taiga biome is DIFFERENT from a tundra biome because it has A) many coniferous trees.
B) cold winters and cool summers.
C) located in the northern hemisphere.
D) a layer of frozen soil called permafrost.

Answers

Answer:

The correct answer would be A) many coniferous trees.

Taiga and tundra represent the two coldest biomes of the land on the planet.

The average annual temperature of taiga lies between 41° Fahrenheit and 23° Fahrenheit whereas the temperature of the tundra lies below 23° Fahrenheit throughout the year.

It makes the major difference between the plant life of the two biomes. The taiga is characterized by the presence of coniferous forests which consist of spruces, pines, and larches.

In contrast, vegetation in the tundra is mainly composed of grasses, shrubs, mosses, sedges, and lichens.

the answer is A. The tundra is a frozen waste, having very little to no vegetation. While the taiga has conifers growing there