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erik [133]
4 years ago
5

Explain the structure of heart​

Biology
1 answer:
Cloud [144]4 years ago
7 0

Answer: The human heart is a four-chambered muscular organ, shaped and sized roughly like a man's closed fist with two-thirds of the mass to the left of mid-line. The heart is enclosed in a pericardial sac that is lined with the parietal layers of a serous membrane.

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If sea lamprey increase in population and decrease the native fish population, the sea lamprey population will eventually collap
geniusboy [140]

Answer:

Negative feedback

Explanation:

Feedback mechanism is activated due to the change in the system that result into an output.

A negative feedback mechanism is a pathway that is caused by deviation in the output that result in a change in output direction which is usually opposite to the initial deviation.

The process of feeding of sea lamprey on the fish started as a normal pathway the deviation started when they could not feed on the fish again as a result of reduced population and they start dying of hunger. It is a negative feedback

3 0
3 years ago
photosynthesis and cellular respiration both use electron transport chains. what is the source of electrons for photosynthesis a
goldfiish [28.3K]

Water serves as an electron source in the electron transport process of photosynthesis. The electron is extracted from water by using solar energy.

What is the electron transport chain's source of energy?

The electron transport chain uses the energy released by oxygen and reduced compound reactions such as cytochrome c and (indirectly) NADH and FADH2 to pump protons into the intermembranous space, producing the electrochemical gradient over the inner mitochondrial membrane.

In photosynthesis, water is split to produce electrons in the presence of sunlight, a process known as the photolysis of water. The electrons are finally transferred to NADP+ by the chloroplast electron transport chain, where they are reduced to NADPH.

Therefore, In aerobic respiration, electrons from NADH and FADH2 are transferred to oxygen by the mitochondrial electron transport chain to reduce oxygen in the water.

Learn more about photosynthesis from the given link.

brainly.com/question/1388366

#SPJ4

6 0
1 year ago
What is the driving force of photosynthesis?
Arisa [49]
The driving force of photosynthesis is the energy that is contained in sunlight. This energy is transformed to energy that plants and other organisms use to live. 
6 0
4 years ago
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Two eukaryotic animal cell organelles that have similar roles to human organs is mitochondria and lysosome. The mitochondria is like the small intestine, it converts food into nutrients needed for the cell. The lysosome is like the stomach, it breaks down the food we consume.
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