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TEA [102]
3 years ago
12

What is the main function photosystem?​

Biology
1 answer:
o-na [289]3 years ago
3 0

Answer:

Explanation:The Photosystems are the functional centers of photosynthesis. The pigments, such as chlorophyll, in the photosystems absorb light energy, which excites electrons. These electrons are transferred to electron-accepting molecules, eventually producing ATP and NADPH.

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Epinephrine has to cross the cell membrane to bind to its receptor in the cytoplasm. True or False
Vinil7 [7]

Answer:

The statement is false.

Explanation:

Epinephrine (also known as adrenaline) is a hormone and a neurotransmitter produced by the adrenal glands, it helps to regulate cellular energy metabolism and increases the heart rate.

Epinephrine adheres to certain receptors that are exposed on the surface of a large number of body cells. This receptor, called beta-adrenergic, is a receptor that is embedded in the plasma membranes of these cells. Adrenaline does not penetrate the cell, instead, joining for a short period of time to its receptor, induces it to release biochemical signals to the cytoplasm of cells. This steric change, affects the configuration of the cytoplasmic domain of the protein, this is the "link" of the receptor that protrudes in the cytoplasm.

3 0
3 years ago
What did Schleidan contribute to the cell theory?
ale4655 [162]
He found a nuclear structure (cells) in plants by looking through a microscope

7 0
3 years ago
How will wolf emigration affect a grassland ecosystem that supports rabbits, the wolf's primary prey?
svet-max [94.6K]

Wolf emigration will bring about the rabbit population increasing.

<h3>What is Emigration?</h3>

Emigration is defined as the movement of organisms away from a particular

area or habitat.

We are aware that Wolves feed on rabbits as a means of food in the

grassland ecosystem. This translates to the following below:

  • The greater the wolves the lesser the rabbit
  • The lesser the wolves, the higher the rabbit.

This therefore means that wolf emigration will bring about the rabbit

population increasing which makes option B the most appropriate choice.

Read more about Emigration here brainly.com/question/1289209

6 0
2 years ago
Biotechnology has allowed us to genetically modify corn with a gene that acts as a pesticide. What could be a possible environme
Sergio [31]
<span>Since a gene that acts as a pesticide is inserted into a corn, that corn is now safe from insects. This will happen because the corn will probably synthesise protein according to that inserted DNA sequence and that protein will serve as a repellent to the insects. However, the Red Queen's hypothesis in evolution explains that organisms must constantly adapt and evolve in order to survive. This refers to insects. If they could not eat genetically modified corn, they would extinct. So, they must adapt or evolve in order to survive. So, it is expected that insects that are resistant to this specific pesticide would develop through the time.</span>
4 0
3 years ago
How dord the fetus get nourishment up until the time it is born?
irina1246 [14]
The answer is through the placenta. The placenta is formed in the uterus of the pregnant woman. Its role is in the nourishment of the fetus. The placenta provides the fetus with nutrients and removes waste. The umbilical cord connects the placenta to the fetus and it serves as the transporting passageway.
3 0
3 years ago
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