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3 years ago

Why a population might live in a clumped dispersion?

Biology

1 answer:

ladessa [460]3 years ago

5 0

Answer:

Clumped dispersion is often due to an uneven distribution of nutrients or other resources in the environment. It can also be caused by social interactions between individuals. Additionally, in organisms that don't move, such as plants, offspring might be very close to their parents and show clumped dispersion patterns.

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Replicate the DNA strand below by writing its complementary strand. A T C T T G C A A A G G C T

Kazeer [188]

Answer: The complementary strand is TAGAACGTTTCCGA.

Explanation: A complementary strand of a DNA is a DNA strand which is not the same with the template strand in base sequence and composition but wherever adenine is found in the template strand, thymine occurs in the complementary strand and wherever guanine occurs in the template strand, cytosine occurs in the complementary strand.

According to Watson and Crick base pairing rule, adenine pairs with thymine (A=T) while cytosine pairs with guanine (C=G).

4 0

3 years ago

What is the pH scale? What is the pH range of an acid, base, and pure water?

ipn [44]

Answer:

A pH scale is a scale of measurement that describes the level of acidity or alkalinity of a solution.

The pH range of an acid is below 7.0; base is above 7.0, and pure water is 7.0

Explanation:

A pH scale is a scale of measurement that describes the level of acidity or alkalinity of a substance. It reads numerical values from 0 to 14.0 where values of 0 to 6.99 represent acid; 7 represent neutral; and values above 7.0 to 14.0 represent alkaline (base).

3 0

3 years ago

Sort the phrases into the appropriate bins depending on whether they are true only for channels, true only for carrier proteins,

ehidna [41]

<h2>The correct answer is explained below:</h2>

Explanation:

The Plasma membrane of a cell is made up of a phospholipid bilayer which has a hydrophobic core and hence is impermeable to water soluble or polar organic and inorganic molecules.
However, a cell can maintain proper homeostsis and undergo metabolism only when it is able to exchange different hydrophilic and polar organic and inorganic chemical components present inside the cell with those present outside the cell.
This necessitates the development of a "path" that could connect the cell interior to the cell exterior.
The path is developed by integral membrane protein that spans across the lipid bilayer opening on either side of the membrane, thereby connecting the cell interior with the cell exterior.
These integral membrane proteins are amphipathic in nature, that is, they are composed of both polar and non-polar amino acid residues. The amino acid residues are arranged such that the non polar amino acid residues face and undergo hydrophobic interactions with the water avoiding lipid molecules in the plasma membrane. The polar amino acid residues face towards the lumen of the opening in between the cell interior and exterior such that they can form hydrogen bonding with the water soluble polar organic or inorganic molecules and help them traverse the plasma membrane.
These integral membrane proteins are of two types: Channel proteins and Carrier proteins.
The Channel proteins:

Form a direct and continuous opening across the plasma membrane. They can either remain always open or can be gated, that is, they open only on associating with specific signalling molecules.
They transport solutes from a region of high electrical charge or concentration to a region of low electrical charge or concentration, that is, down the electrochemical or concentration gradient.
They usually allow the easy and quick transport of water molecules and small ions across the membrane.

The Carrier proteins:

They undergo a change in their conformation to translocate solute molecules across the plasma membrane and they do not form a continuous opening.
When they open on one side of the membrane they are closed on the other side. They cannot remain, simultaneously, open on both sides of the membrane.
They are required mainly for the translocation of small polar organic molecules across the plasma membrane down the electrochemical or concentration gradient.

For channels only:

For carrier proteins only:

For channels as well as carrier proteins both:

4 0

3 years ago

A family released their pet fish family into a local pond. The fish had no known local population. The impact of the fish on the

nirvana33 [79]

The term that would best define the fish added to the pond is introduced species.

<h3>What is introduction of a species?</h3>

Adaptation to the conditions of the place in which it was inserted, the absence of predators and degradation are the main factors that lead an exotic species to become invasive, competing with native species for resources and causing a great impact on the community.

In this case, the introduced species are exotic species which has arrived there by human activity, may even be harmful to the entire ecosystem because they can break the delicate equilibrium of the ecosystem.

See more about introduced species at brainly.com/question/21452505

#SPJ1

3 0

1 year ago

(a) It is possible to measure a patient’s heart rate by either palpating their peripheral pulse, by observing their ECG, or by l

Dimas [21]

B)<span>When you listen to the heart sounds, you are hearing the flow of blood which stops abruptly when a heart valve closes. This produces the "lub-dub" sounds. 1st heart sound (when the Mitral Valve closes) as the ventricle contracts (systole) and then 2nd heart sound (when the Aortic Valve closes) and the ventricle starts to fill again (diastole)
</span><span>The pulse is the wave of pressure you can feel through the artery walls. This denotes systole.
</span><span>The ECG's QRS complex is the electrical signal that tells the Ventricles to contract. You can see that the QRS occurs right at the beginning of systole and triggers Isovolumetric contraction.
</span><span>So the QRS on the ECG, the pulse wave you can feel (ie. the rise in aortic pressure) and the 1st heart sound all signify SYSTOLE.
</span><span>there a delay between systole of the ECG and the resulting pulse felt in the finger (R-Pulse) </span>because it takes a little bit of time for the pressure to transmit through the body, as the finger is not on the heart (if it was there would be no delay)

7 0

3 years ago