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san4es73 [151]
3 years ago
5

While testing for biological macromolecules in an unknown, you find that it reacts strongly with iodine and the solution immedia

tely turns a very dark black. The macromolecule at hand must be:_________.
Biology
1 answer:
True [87]3 years ago
6 0

The macromolecule must be starch.

Explanation:

Starch is a polymer of Glucose joined by glycosydic bond.

Starch is the main energy storage substance in green plants.

Starches react with iodine and give a bluish black or black color and thus iodine test is considered as a confirmatory test for starches.

In this experiment ,the solution turns very dark black on addition of iodine so we can be sure that the solution contained starch.

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What is the difference between a community and a population?
nlexa [21]
A community is where a group of people live really close by vs. a population counts how many people live in a area
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3 years ago
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A group of students are reviewing information about the skeletal development in children. The students demonstrate understanding
stellarik [79]

Answer:

25 years

Explanation:

Ossification is the process of bone tissue formation. Osteoblasts are responsible for the process of ossification. It begins when the fetus is three months old and goes on till 25 years of age. Upper limbs get ossified first, followed by lower limbs, sternum and vertebrae.

There are two types of ossification processes. When bone is directly developed using the primitive connective tissue (mesenchyme) it is called as  intramembranous ossification, while in endochondral ossification cartilage is used as a precursor.

7 0
3 years ago
The functional anatomy of basal ganglia disorders Author links open overlay panelRoger L.AlbinAnne B.Young John B.Penney
Roman55 [17]

A diverse range of clinical syndromes with a shared anatomic location inside the basal ganglia are known as basal ganglia disorders.

<h3>What is functional anatomy of basal ganglia disorders model ?</h3>

A model in which particular types of basal ganglia disorders are associated with changes in the function of subpopulations of striatal projection neurons. This model aims to explain the variety of clinical manifestations associated with insults to various parts of the basal ganglia.

  • This model is based on an analysis of post-mortem anatomical and neurochemical data from humans and experimental animals. The excess of aberrant movements that characterise hyperkinetic diseases are thought to be caused by a specific dysfunction of striatal neurons that project to the lateral globus pallidus.

Learn more about Basal ganglia disorders here:

brainly.com/question/14448182

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4 0
1 year ago
The advantage of a closed circulatory system over an open circulatory system is that
Ber [7]
Hello friend!!

Circulation-<span>is the movement of substances such as nutrients and gases within blood vessels and cavities throughout the body.

</span>

Not all animals have a circulatory system.                                                      Poriferans, cnidarians, platyhelminthes and nematodes (nematodes have pseudocoelom fluid but no vessels) are avascular animals. Echinoderms do not have true circulatory systems either.

In animals that do not contain a circulatory system, the transport of substances occurs by cell to cell diffusion.

Blood is a fundamental means of substance transport for larger animals since, in these animals, tissues are distant from each other and from the environment thus making diffusion impossible.

Circulatory systems can be classified into open circulatory systems and closed circulatory systems.

An open circulatory system is one in which blood does not circulate only inside blood vessels but also flows into cavities that irrigate tissues. In open circulatory systems, blood pressure is low and generally the blood (called hemolymph) has a low level of cellularity.

Arthropods, molluscs (cephalopods are exception) and protochordates have open circulatory systems.


A closed circulatory system is one in which blood circulates only inside blood vessels. For this reason, the blood pressure is higher in animals with closed circulatory systems. The cellularity of the blood is also higher, with many specific blood cells.

Closed circulatory systems are a feature of annelids, cephalopod molluscs and vertebrates

A closed circulatory system is more efficient. Since blood circulates only inside blood vessels, it has a higher pressure and, as a result, can travel greater distances to the organs where hematosis happens and to peripheral tissues. In addition, the higher circulatory speed increases the animal’s capacity to distribute large supplies of oxygen to tissues that consume it in large amounts, such as muscle tissues, which can then perform faster movements. Animals with an open circulatory system (with the exception of insects, which carry out gas exchange separately from circulation) are generally slower and have a low metabolic rate.


<span>In insects, the circulatory system is open but this system does not participate in the gas exchange process or in oxygen supply to tissues. Gases enter and exit through the independent tracheal system, which allows for the direct contact of cells with the ambient air. Therefore, an insect can supply the large oxygen demand of its fast-beating wing muscles even though it has an open circulatory system.</span>

<span>
</span>

<span>Hope It helps!!</span>

<span>All the Best!!</span>

7 0
3 years ago
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Anna007 [38]
The sun is by far the strongest. Think it is the largest and its gravity pulls all of the planets around it in orbit - including the earth. The earth would be second cause it’s pulling the moon and the moon last cause it’s not pulling anything. Again the sun pulls the earth so it is the strongest
3 0
3 years ago
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