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Ymorist [56]
3 years ago
11

Why do the cells in all living things need energy?

Biology
2 answers:
Montano1993 [528]3 years ago
7 0
<span>A.
to fuel their chemical reactions</span>
Yanka [14]3 years ago
3 0

Answer:

a

Explanation:

because i took the test and it right

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Which group of non-prokaryotic organisms studied in microbiology typically have two life cycle stages: trophozoite and cyst?
uranmaximum [27]

The correct answer is Protozoa.

A class of single-celled, non-prokaryotic organisms known as protozoa.These could either be parasitic or free-living in nature. These are heterotrophs that procreate via binary fission in an asexual manner. Numerous unrelated or tangentially related organisms make up the Protozoa. Sarcodina, Flagellates, Ciliates, and Sporozoans are the four main divisions. There are two stages in the life cycle of certain protozoa: the proliferative stage (trophozoites), and the resting stage (cysts). Trophozoites are the proliferative stage of the protozoa, which is when they divide and reproduce. The protozoa can tolerate adverse environmental circumstances like toxic chemicals, intense heat, and nutrition and water shortages because of their resting cyst shape.

Learn more about Protozoa here:-

brainly.com/question/2937170

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2 years ago
The plasma membrane represents an energetic barrier to the free diffusion of ions from the extracellular space into the cytoplas
Marysya12 [62]

Answer:

Why are molecules such as valinomycin effective at transporting ions across the membrane?

Valinomycin is effective as transporting ions across the membrane because it is no charged, so it can carry ions.

Why would a drop in temperature to or below the transition temperature limit valinomycin mediated K+ transport across the plasma membrane?

Valinomycin is limited by temperature because its activity is highly sensitive and it depends on a stable and an average temperature.

Explanation:

Valinomycin is effective at transporting ion across the membrane because is an antibiotic that alternates hydroxy and amino acid, ans it helps membranes to be permeable. Valinomycin is a cyclic molecule that helps in ions transportation through membranes. Also, antibiotics have a temperature range of activity, that's why it is sensitive to changes.

8 0
2 years ago
What is the function of RNA polymerase​
Darya [45]

Answer:

Option C

Hope it helps...

3 0
1 year ago
How many plant and animal species do wildlife experts estimate are endangered?
Burka [1]

The right answer is c. 3 to 10 million

The latest estimates are a bit more precise: there are 8.7 million living species (which is included in the range between 3 and 10 million), 6.5 million on land and 2.2 million in the water. Which is amazing, since there is more sea than land on our planet.

Researchers estimate that there are 7.77 million animal species, only 298,000 plant species and 611,000 species of fungi and molds.

8 0
3 years ago
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Using no more than 14 propositions, list the functions, structure, and distribution of the lymphatic vessels and describe the me
sveticcg [70]

The lymphatic vessels are thin-walled valvular structures, composed of lymphangions, which carry the lymph from the tissues, via the lymph nodes, to the bloodstream. For this reason, they are analogous to veins and venules.

The lymphatic network is present throughout the body with the exception of the central nervous system and non-vascularized tissues.

It is separated in two circuits: one for the upper right quarter of the body, and one for the rest.

The lymphatic channels join together to form lymphatic vessels more and more voluminous.

Finally, The lymph is drained by two large collectors:

* The right lymphatic canal

* The thoracic duct.

All lymphatics thus end up in the upper vena cava system by two separate circuits.

8 0
2 years ago
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