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Amanda [17]
2 years ago
11

Unicellular and simple multicellular organisms isolate and eliminate waste materials by:

Biology
1 answer:
elixir [45]2 years ago
5 0

Answer:

The correct option is d.

Unicellular and simple multicellular organisms isolate and eliminate waste materials by: <u>moving the wastes into a contractile vacuole and eliminating them through exocytosis.</u>

Explanation:

In all living systems, from prokaryotes to more complex multicellular eukaryotes, the regulation of substance exchange with the inanimate world occurs at the level of the individual cell and is performed by the cell membrane. The cell membrane regulates the passage of materials into and out of the cell, a function that makes it possible for the cell to maintain its structural and functional integrity. This regulation depends on interactions between the membrane and the materials that pass through it. Non-assimilable substances accumulate in vacuoles or fuse with the plasma membrane, and exocytosis expels their contents.

Exocytosis is an inverse process of endocytosis, in which an intracellular vesicle approaches the plasma membrane fusing with it so that the content of said vesicle is poured into the extracellular environment. By exocytosis, the cell can expel the remains of the cell digestion process that are not useful to it and also the secretion products from the Golgi apparatus in the form of secretory vesicles. If too much water enters the cell, it could dilute the cell contents to the point of interfering with biological functions and could eventually break the cell membrane. In the Paramecium, there is a specialized organelle, the contractile vacuole, which prevents this from happening since it collects water from various parts of the cell and pumps it out with rhythmic contractions.

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Arturiano [62]

the answer is a it can be used as an energy source by organisms

3 0
3 years ago
20 POINTS!!
Naily [24]

Answer:

Because Intercalary meristems are found in the the stem part of the sugarcane in whole length.

Explanation:

  • As we have studied about meristem regions, that these are the regions found at the nodal areas which are able of cell division and growth.  Intercalary meristem are present in the nodes of sugarcane stem which lead to the rapid increase in elongation of stem.
  • Intercalary meristem are located at the base of leaves and nodes that leads to the increase in length.
  • On the tip of sugarcane, apical or tip region meristem are found. When the tip region is removed, the presence of intercalary meristems play the role by facilitating the elongation of stems in sugarcane.

Please see attached image for better understanding.

Hope it helps!

4 0
3 years ago
Which organelle stores hereditary material and coordinates the activities of the cell?
Studentka2010 [4]

Answer:

Nucleus

Explanation:

The nucleus stores hereditart material and coordinates activities of the cell

7 0
2 years ago
Male northern elephant seals (Mirounga angustirostris) compete with one another for territories along the beach. Males defend th
Ugo [173]

Answer:

Option C

Explanation:

In elephant seals, the male arrive the beach first and start establishing its territory. Once their territory is established female elephant seals starts arriving at the beach and prefer mating with the male who can defend their territory or females in his territory from other males. All females in the territory of specific male mate with the male give birth to their pups and after staying for few months move back into the water.

hence, option C is correct

6 0
3 years ago
How does exercise affect a person's body and homeostasis?
nexus9112 [7]

Answer:

In explanation.

Explanation:

-Exercise effects on the person's body and homeostasis.

Exercise stimulates the sympathetic nervous system and will induce an integrated response from the body; This response works to maintain an appropriate level of homeostasis for the increased demand in physical, metabolic, respiratory, and cardiovascular efforts.

-The Effect of Exercise on Homeostasis

1. Increased Oxygen Consumption.

2. Increased Oxygen Delivery.

3. Increased Body Temperature.

4. Increased Release of Carbon Dioxide.

5. And more.

-More information in this link (if you are looking for homeostasis effects): https://www.livestrong.com/article/369714-how-does-the-body-maintain-homeostasis-in-response-to-exercise/

-More information in this link: https://www.ncbi.nlm.nih.gov/books/NBK482280/

7 0
2 years ago
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