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worty [1.4K]
4 years ago
8

Where does the primary source of energy needed for life come from?

Biology
2 answers:
vodka [1.7K]4 years ago
6 0
Answer: A Solar Energy (The Sun)
docker41 [41]4 years ago
3 0

Answer: A. Solar energy

Explanation:

The sun is the primary source of energy that guarantees the existence of life in the land. The source of solar energy is nuclear fusion reactions between hydrogen nuclei, resulting in helium nuclei and a certain amount of energy. This energy is radiated by the sun in the form of electromagnetic radiation with a power distribution that covers virtually every region of the electromagnetic spectrum, but that has its maximum intensity in the region that goes from ultraviolet to infrared.

The energy of the sun that reaches the earth (about 1.7 x 1017 J.s-1) is captured by plants, photosynthetic bacteria (cyanobacteria) and by the ocean. The part absorbed by plants corresponds, approximately 0.025% of the total solar energy that arrives at the surface of the earth. In this way, the energy produced by nuclear fusion within the Sun and carried to Earth in the form of electromagnetic radiation (photons) is transformed into chemical energy and stored in the form of chemical bonds in plant molecules.

Animals feed on plants to acquire some of the energy stored in the molecules of plants to make their molecules and keep their cells working. Animals use the energy acquired by the moving food, breathing, temperature control keeps your organs and immune system functioning, grow, reproduce, etc.

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Question text
solong [7]

Answer:

What is responsible for the increased stability of DNA compared to RNA? DNA is a more stable molecule than RNA because it lacks a hydroxyl group on the 2' carbon and is therefore more resistant to cleavage, and because the two sugar-phosphate backbones are held together by many hydrogen bonds between nitrogenous bases.

Explanation:

Hope this answers your question.

3 0
3 years ago
FOR PEEPS WHO LIKE ANATOMY AND WHAT NOT
postnew [5]
Cell
Tissue
Organ
Organ system
Organism

Brain, spinal cord, nerves

The brain controls thought, behavior, emotion, memory, and basic life functions. The brain is also the origin of control over body movement. The spinal cord connects the peripheral nervous system (PNS) to the brain; nerve impulses reaching the spinal cord through sensory neurons are transmitted up into the brain. Nerves primarily involve control and coordination of all parts of the body.

The nervous system interacts with every other organ system. For example the hypothalamus in the brain controls the pituitary gland and tells it when to produce hormones, this shows that the nervous system interacts with the endocrine system.

Hope this helps :)
8 0
3 years ago
The client with chronic kidney disease and congestive heart failure is weak and dyspneic. Lab work reveals a hemaglobin of 6.5 g
inysia [295]

Answer:

packed RBC

Explanation:

  • Packed red blood cells consist of red blood cells that are separated from the rest of the blood components and are used for transfusion.
  • When the hemoglobin of a person falls below 70–80 g/L (7–8 g/dL), then the person is usually transfused with packed RBC.
  • In the given situation, the client has chronic kidney disease and congestive heart failure and as a result of this, the hemoglobin levels of the client has fallen down 6.5 g/dL (65 g/L) and thus, there is an immediate need for the provider to perform a transfusion of packed RBC of appropriate blood type as RBCs are a carrier of hemoglobin in the body.
5 0
4 years ago
If you could choose to be either an autotroph or a heterotroph, which would you choose and why?
earnstyle [38]
Well this has to be your opinion :) but I will tell you autotrophs are organisms that can make their own food, so plants. Heterotrops are organisms that have to get their energy from another source, animals. So would you rather be a plant or animal (like you already are) and why?
4 0
4 years ago
NEED HELP PLEASE
mezya [45]
With flowers- most are asexual, meaning that if there is harsh conditions like rain or wind. Many of the seeds can be damaged and aren’t able to get to the female to make more. Yet, sexually the seeds are protected by the male until the seed is transferred into the female. But even then, it will be safer. Hope that helped. :)
7 0
3 years ago
Read 2 more answers
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