D) take in nutrients because endocytosis is the process when a cell takes in food
By consuming less than 1200 calories a day it impacts a person’s metabolism by slowing it down and forcing the body to break down its own tissues if it is not receiving sufficient calories to withstand vital functions. There are slight side effects of a less than 1200 calories which are faintness, tiredness, irregular periods, and unsteadiness. Some major side effects might have impact on the gallbladder, gout, excruciating inflammation of the joints and also death.
Answer:
The main function of the circulatory (or cardiovascular) system is to deliver oxygen to the body tissues, whilst simultaneously removing carbon dioxide produced by metabolism.
The noncyclic pathway is a FLOW of electrons from water, to photosystem II, to PHOTOSYSTEM I to NADPH. Energy is released as ELECTRONS move through the first electron transfer chain. This energy pumps HYDROGEN IONS into the thylakoid compartment, and then they power the formation of ATP as they flow back out. Sunlight provides the energy needed to keep this cycle going.
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- Luminous energy is trapped by chlorophyll in Photosystem II.
- When the pigment molecules absorb light, electrons provided by water molecules get in a higher energy level.
- The excited electrons go through the electron transport chain from Photosystem II to a less energetic level in photosystem I.
- <em>When the excited electrons leave photosystem II, they are replaced by new electrons extracted from the water molecules. </em>
- Luminous energy absorbed move the electrons from the photosystem I to another electron acceptor, from where they get transported again and used to produce NADPH molecules.
- <em>When electrons leave Photosystem I, they are replaced by new electrons coming from photosystem II. </em>
- When the water molecule breaks down, hydrogen ions remain in the thylakoid lumen, from where they are pumped to the stroma by the ATP synthase.
- The released energy is used to produce ATP molecules.
- Hydrogen ions go back from the stroma to the thylakoid compartment.
The final products are oxygen, ATP, and NADPH.
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<span>The biological term for such organisms is "deuterostomes". Those who's first opening is the mouth are called protostomes.
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