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mote1985 [20]
3 years ago
14

Which of the following could not easily cross the plasma membrane? A. Water B. Carbon dioxide C. Oxygen D. All of the above coul

d easily cross the plasma membrane.
Biology
1 answer:
wariber [46]3 years ago
5 0

Answer:D

Explanation:all of the above.

They are simple molecules that can cross the plasma membrane by passive diffusion.

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How is it possible that over 20 million living organisms on the planet are made up of only 5 types of nucleotide bases arranged
Tpy6a [65]
<h2>Answer</h2>

It is because of different arrangements of nucleotide bases.

<h2>Explanation</h2>

There are only five types of nucleotide basis are present in the genetic material which makes up the all the genetic information of the individuals. These nucleotides are named as Adenine, Thymine, Guanine, Cytosine and Uracil. In all the living beings on the earth, these only five nucleotides are present which decides their behaviour and functions on the earth. These five bases have features to get any arrangements according to the situation. Their different arrangement at the heredity material makes the difference in all living beings regarding their behaviour.



4 0
3 years ago
You observe a high proportion of malarial infections in a small village located in Angola. Malaria is caused by the protozoan Pl
svet-max [94.6K]

Answer:

<em>B and C.</em>

Explanation:

The epidemiological triangle is an illustration of interaction among suitable hosts, disease agents, and the environment that drives successful outbreak of diseases.

In order to successfully tackle or reduce the incidence of a disease, the triangle has to be broken.

<em>In the case of malaria which is caused by plasmodium but spread through the female anopheles mosquito, one way of breaking the epidemiological triangle is to eliminate female anopheles mosquito in the environment using any possible means. This will stop the spread of the parasite and hence, the disease.</em>

<em>Another way to reduce/prevent malaria is to prevent the vector, female anopheles mosquito from getting to the host, the human populace. This can also be achieved by several possible means.</em>

Relocating the entire village to a neighbouring village might not break the epidemiological triangle as long as female anopheles mosquito still abounds. In the same vein, antibacterial drugs will not help to treat malaria. However, instructing residents on personal protective measures and controlling the vector through chemical larvicides will go a long way in breaking the triangle and reducing the incidence on the malaria disease.

<em>The correct options is B and C.</em>

5 0
3 years ago
Why is air pressure greater higher up in the atmosphere
S_A_V [24]

Answer:

Pressure decreases with increasing altitude. The pressure at any level in the atmosphere may be interpreted as the total weight of the air above a unit area at any elevation. At higher elevations, there are fewer air molecules above a given surface than a similar surface at lower levels.

Explanation:

6 0
3 years ago
Which factor in this swamp is abiotic?<br><br> A. Grass<br> B. Trees<br> C. Algae<br> D. Water
Lelechka [254]

Answer:

D. Water

Explanation:

Biotic factors are all living things, and they are derived from organisms. These include: fungi, plants, bacteria, archaea, protists, animals.

Abiotic factors are all nonliving things, and they are not derived from organisms. These include: air, soil, light, water, minerals.

In this case, grass, trees, and algae are all living things since they are derived from organisms.

On the other hand, water is not a living thing since it is not derived from organisms.

Let me know if this helps!

3 0
3 years ago
Read 2 more answers
The ozone layer protects life on Earth by absorbing harmful ultraviolet radiation. The ozone layer is located between 17 kilomet
Zolol [24]
The correct answer is (2) - Stratosphere. Ozone is found in the stratosphere , a layer beginning between 6 and 10 miles above the earth's surface and extends upward to about 30 mile above the surface of he earth. The ozone that is found in the stratosphere absorbs most of he harmful ultraviolet sunlight and is thus called the "good ozone" Ozone is also found in the lower region of the atmosphere known as the troposphere. But the ozone here strongly reacts with molecules causing toxicity in plants. The ozone is therefore termed as "bad ozone."
8 0
4 years ago
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