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3 years ago

Explain how viruses differ from living organisms.

Biology

1 answer:

12345 [234]3 years ago

7 0

Answer:

Most notably, viruses differ from living organisms in that they cannot generate ATP. Viruses also do not possess the necessary machinery for translation, as mentioned above. They do not possess ribosomes and cannot independently form proteins from molecules of messenger RNA.

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What part of the brain is responsible for monitoring incoming information and alerting higher brain areas?

Lerok [7]

The right answer is the reticular activating system (RAS).

The Reticular Activation System. This is an element of your brain that is useful for capturing your attention and for achieving your goals more easily.

Let's take an example immediately to illustrate what the RAS really means: A loudspeaker announces your name and asks you to pick up your daughter at the reception. And there, your brain, your RAS gets in motion: your attention is at its highest level and you distinctly and clearly distinguish the message and its content addressed to you.

Thus, thanks to the RAS, which starts automatically in your brain, the relevant information is brought to your attention. The RAS plays a role of intermediary, a filter between the conscious part and the unconscious part of your brain. The latter can not store all the information, it is necessary that a relevant sorting is done between them. It's the RAS that does it. It is he who decides what is worthy of attention and what is not. As soon as it judges that information concerns you to the highest degree, he will "wake up" your brain that will absorb it. Thus, as part of our example, the RAS has been instructed to wake up your attention as soon as your name is spoken in the speaker.

8 0

3 years ago

Mendel proposed that each individual carries forms of a gene for a given character, which are called alleles, and that the allel

marusya05 [52]

Answer:

either one of the two alleles in a diploid individual.

Explanation:

A trait is expressed only when two alleles pair up. Thus, an allele pair during cell division assort independently into two individual alleles so that each gamete receive one of the two allele

For example

During gamete formation XX and XY allele pairs divide to contribute one allele to each gamete respectively.

Thus, XX allele pair will divide to give X gene to both the gamete

And XY pair will divide to give X gene to one gamete and Y gene to other gamete

3 0

4 years ago

Nevermind. I figured it out!

antiseptic1488 [7]

Answer:

Nevermind. I figured it out!

=oh!!(^__^)

6 0

3 years ago

A. Determine the surface area, volume, and surface area to volume ratio for the following three blocks. Then, state which one yo

insens350 [35]

Explanation:

In a cell, the rate of diffusion is higher when the surface area to volume ratio is higher.

- given that a cube or block has 6 sides...

Volume ⇒ 1.5 cm x 1.5 cm x 1.5 cm= 3.375 $cm^{3}$

Surface area ⇒ (1.5 cm x 1.5 cm x 1.5 cm) x 6=13.5 $cm^{2}$

Surface area :Volume ⇒ $\frac{13.5}{3.75}$ = 1:4

Volume ⇒.5 cm x .5 cm x 6 cm= 1.50 $cm^{3}$

Surface area ⇒(2 (.5 cm x .5 cm)) + (4(.5 cm x 6 cm))= 0.5+12 = 12.5 $cm^{2}$

Surface area :Volume ⇒ $\frac{12.5}{1.5}$ = 25: 3

Volume ⇒3 cm x 2 cm x 2 cm= 12 $cm^{3}$

Surface area ⇒(2 (3 cm x 3 cm ))+(4(3 cm x 2 cm))=42 $cm^{2}$

Surface area :Volume ⇒ $\frac{42}{12}$ = 7:2

<em>The highest ratio is said to be the most efficient; with a higher surface area, more substances can pass across the surface of the cell at a time. </em>

<em />

Further Explanation:

Cells require all substances to cross the cell membrane. These, like agar, which contains small pores, is semi permeable -only allowing some molecules to pass cross the membrane or surface. The cubes contain a pH indicator that reacts with the solute, vinegar. Cell membranes contain lipids which form a barrier; polarity or arrangement can give these non-polar macromolecules hydrophilic and hydrophobic properties.

Via diffusion, small water molecules can move across the phospholipid bilayer acts as a semi-permeable membrane into the extracross the phospholipid bilayer acts as a semi-permeable membrane into the extracellular fluid or the cytoplasm which are both hydrophilic and contain large concentrations of polar water molecules or other water-soluble compounds. The hydrophilic heads of the bilayer are attracted to water while their water-repellent hydrophobic tails face towards each other- allowing molecules of water and water soluble molecules, to diffuse across the membrane along the concentration gradient

acellular fluid or the cytoplasm which are both hydrophilic and contain large concentrations of polar water molecules or other water-soluble compounds. The hydrophilic heads of the bilayer are attracted to water while their water-repellent hydrophobic tails face towards each other- allowing molecules of water and water soluble molecules, to diffuse across the membrane along the concentration gradient

Thus in smaller cubes the rate of diffusion is higher as the surface area to volume ratio is higher; the vinegar diffuses all the way to the center, as indicated by the color change in the cube.

However as cells increase in size, their surface area:volume ratios decrease rapidly; larger cells, like the larger agar cubes, have a harder time moving molecules across the membrane, so the color change cannot be seen in the middle, as there was less of a permeable surface for the vinegar to diffuse across. to combat this, eukaryotic cells have specialized mechanisms to transport molecules along with membrane-bound organelles like the endoplasmic reticulum that provide a higher surface area for absorption and enable more efficient transportation.

Learn more about membrane components at brainly.com/question/1971706

Learn more about plasma membrane transport at brainly.com/question/11410881

#LearnWithBrainly

4 0

3 years ago

Type an X beside all the TRUE facts about estuaries.

Stolb23 [73]

Answer:

i believe that the answer is 22,24,25,28

8 0

3 years ago