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Lerok [7]
3 years ago
10

Nitric oxide is a paracrine signal molecule because NO

Biology
1 answer:
hichkok12 [17]3 years ago
8 0

Answer:

C. is unstable, with a short half life

Explanation:

Paracrine hormones are the hormones that act on neighboring cells only. These hormones or chemicals are largely unstable and have a brief life as do not visit the distantly placed target cells. For instance, somatostatin is secreted by D cells of the pancreas. It acts in a paracrine manner and inhibits the discharge of hormones from the neighboring beta and alpha cell.

Likewise, one of the functions of unstable NO gas is to serve as a vasodilator. It is released by epithelium cells and serves to dilate arterioles and relax precapillary sphincters. Then it is degraded.

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Some people have low levels of calcium circulating in the blood, a condition known as hypocalcemia. while for many this disorder
kap26 [50]

Answer:

low level of calcium would result in fewer signals sent between pre and post synaptic cells.

Explanation:

The calcium has a main role in signal transmission mechanism and here is the mechanism :

1-the impulse reaches the synapse (depolarization which is a voltage change).

2-the voltage gated calcium channels open and let calcium flow into the cell.

3-the calcium causes the synaptic vesicles to rupture and release chemical transmitters which cross the synaptic cleft and finally bind to receptors on the post synaptic cell (transmitting the signal)

so it's obvious that if calcium concentration decreases, the signal transmission also decreases.

8 0
3 years ago
How can molecular evidence show species relatedness
ohaa [14]
Molecular evidence would include DNA
by comparing Gene sequence, you can tell which species have the most genes in common
6 0
3 years ago
Read 2 more answers
Question 3 of 10
Ad libitum [116K]
I think the right answer is b
3 0
3 years ago
Why is so little of Earths surface found far above sea levels​
jonny [76]

Hello! :)

The eroded material finds its way to the bottom of oceans because of gravity (from... According to the hypsometric curve (plot between elevation and % of earth's surface), only about 29% of Earth's surface is above the mean sea level, rest 71% has an elevation less than mean sea level.

Hope this helped and I hope I answered in time!

~ Destiny ^_^

5 0
3 years ago
What is an example of hierarchy representation of information
enyata [817]

Answer:

What is hierarchy? A hierarchy is a way of organizing things that goes from high to low. It can be used to refer to a wide number of systems, organizations and even physical objects that represent a hierarchical structure. Keep reading for hierarchy examples that you see every day.

Everyday Hierarchy Examples

Hierarchy systems rank categories from top to bottom. For example, in a typical family system, the parents have the most authority, followed by the children, then followed by the pets. Take a look around you; you may find more hierarchy examples than you think!

The human body itself is a hierarchy. We are made up of systems of organs, which are made up of individual organs. Those organs are composed of tissues, then cells, then organelles. The final category of a human body hierarchy are the atoms that make up the organelles.

Political systems are hierarchies. In America, the hierarchy starts at the top with the president, and then the vice president, then the speaker of the house, then the president of the Senate, followed by the secretary of state.

Your family tree is a hierarchy starting back with your first ancestors. Their children had children, then those children had children, and so on until your family produced you. You are the child of two distinct genetic parents, and your children will be the next category of this hierarchy.

Human needs are often represented as a hierarchy (such as in Abraham Maslow's Hierarchy of Needs). The most important are your physical needs, such as eating, drinking and sleeping, followed by security. After that is a sense of love and belonging, then confidence and esteem, and finally, self-actualization — the stuff that makes you who you are like creativity, values, acceptance of facts.

The military is a hierarchy. At the very top of the Army, for example, is the authority of the general, followed by the lieutenant-general, followed by the brigadier general, then general, colonel, lieutenant colonel, major, captain, first lieutenant, second lieutenant, master sergeant, sergeant, corporal, then private.

More Examples of Hierarchy Systems

Take a look at even more hierarchy examples that you may already know and use. You'll find that much of science and geography depends on hierarchies as well!

The classification of living things is developed as a hierarchy. Kingdom, phylum, class, order, family, genus, and finally species are the levels of organization in the field, which is known as taxonomy.

Babushka dolls, also known as matryoshka dolls or Russian nesting dolls, are a Russian toy in one large doll holds a smaller doll. That smaller doll holds an even smaller doll, which holds an even smaller doll, and so on. This is known as a nested hierarchy and is used to describe things other than matryoshkas.

Every postal address in our country is a hierarchy with the highest level being the country itself — the United States. After that, the postal address is listed by state, city, street, building, and sometimes the apartment or room number.

Similarly, our political boundaries are hierarchies. It begins with the federal government, then the state government, then city, town, and then borough or municipality, depending on the location.

The workplace is typically a hierarchy. The titles begin with CEO and then descend down the executive ladder to the COO, then to a president, a vice president, a manager, an assistant manager, and then individual employees.

Churches are often hierarchical systems. For example, the Anglican Church has the monarch at the top, followed by the archbishop of canterbury, then the archbishop of york, then the bishops, followed by deaneries, and finally a vicar.

Poker hands are often grouped in hierarchies, with the royal flush as the most valuable hand. It is followed by the straight flush, the 4 of a kind, the full house, the flush, the straight, the 4 of a kind, the 3 of a kind, the 2 pairs, 1 pair, and finally a high card.

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Hierarchies Organize Our World

Now you have seen many different hierarchy examples and structures that are classified as hierarchies. These examples should help you to better understand what hierarchy is and how hierarchies work. For more information on organizing concepts, take a look at different

Explanation:

7 0
2 years ago
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