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VLD [36.1K]
4 years ago
8

What are eukaryotic kingdoms

Biology
1 answer:
Vikki [24]4 years ago
8 0

Answer:

The four eukaryotic kingdoms include animalia , plantae, fungi and protista. they are all organisms with cells that have nucleui

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Why is excretion necessary in living beings ?
AlladinOne [14]
<span>Waste products such as poop, diarrhea, and carbon dioxide (look in the respiratory system) must be removed. If they are allowed to accumulate they cause poisoning which slows down vital chemical reactions. Which can cause many problems to develop.</span><span />
7 0
4 years ago
_____ is a solvent for polar molecules and the most common solvent used by living things; all the ions and proteins in a cell ar
babunello [35]

Answer:

The correct answer is - a. water and water.

Explanation:

Water is the universal solvent as it is the most common solvent for almost most of the substances. Water mlecules are able to dissolve polar molecules that have partial positive and negative charge are readily dissolve in the water.

In the cell all ions and proteins are dissolve in the water which makes maximum part of the cytoplasm and acts as the solvent in the cytoplsm within the cell of an organism.

4 0
3 years ago
Sun 101 - Which two complementary forces keep the Sun from blowing itself up?
labwork [276]

Fusion and gravity

Fusion and gravity keep the sun from blowing itself up.  A large amount of energy is released by the sun. Protons are fused together to form helium atoms due to the high heat and pressure at the center of the sun. The Sun does not blow itself up from the outer pressure of nuclear fusion in as much as the inner force of gravity balances it.






7 0
3 years ago
Facilitated diffusion requires
KiRa [710]

Answer:

<h3>A. </h3>

Explanation:

<h3>Tutorial</h3><h3>Diffusion</h3><h3>Diffusion means that the net movement </h3><h3>of particles (molecules) is from an area of high concentration to low concentration.</h3>

<h3>Graph of the simple and facilitated diffusion taking into account the rate of uptake and the concentration</h3>

<h3>If the particles can move through the lipid bilayer by simple diffusion, then there is</h3><h3> no limit to the number that can fit </h3><h3>through the membrane. The rate of diffusion increases linearly as we add </h3><h3>more particles to one side of the membrane.</h3>

<h3>If the particles can only pass through protein channels, then the rate of </h3><h3>diffusion is determined by the number of channels as well as the number of particles.</h3>

<h3>Once the channels operate at their maximal rate, a further increase in </h3><h3>particle numbers no longer increases the apparent rate of diffusion. At this limited rate we describe the protein channel as being saturated.</h3>

<h3>The cartoon illustrates several points about facilitated diffusion. The particles are more concentrated on one side of the membrane, and yet they can move in both directions. However, the net movement is from high particle concentration to low. If the number of particles gets so high on one side of the membrane that they</h3><h3> interfere with diffusion through the </h3><h3>protein channel, then we observe a limit to the rate of diffusion at the point of saturation.</h3>

<h3>Illustration of facilitated diffusion</h3><h3>animation used with permission of the Virtual Cell Web Page</h3><h3>Problem 7 | Answer | Problem 8</h3><h3>The Biology Project > Cell Biology > Cell Membranes > Problem Set</h3>

<h3>The Biology Project</h3><h3>Department of Biochemistry and Molecular Biophysics</h3><h3>University of Arizona</h3><h3>May 2002</h3><h3>Revised: August 2004</h3><h3>Contact the Development Team</h3>

<h3>Simple diffusion does not require energy: facilitated diffusion requires a source of ATP. Simple diffusion can only move material in the direction of a </h3><h3>concentration gradient; facilitated </h3><h3>diffusion moves materials with and against a concertion gradient. </h3>

8 0
3 years ago
Read 2 more answers
Starch is made up of:
lesantik [10]

Answer:

units of C 6 H 12 O 6

Explanation:

Starch is a polymer of billions of glucose units joined through a condensation reaction that splits out molecule of water. Starch is an important part of our food belonging to the category of carbohydrates. It is found in cereals and potatoes.

Starch can be in two forms based on the their structure and some other differences:

1) Amylose- straight chain polymer

2)Amylopectin- Branched chain polymer

You can see the structure of starch with glucose monomers for better understanding in the image.


Hope it helps!



8 0
3 years ago
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