In this question in which is the major source then of free oxygen in the earth's Proterozoic atmosphere is being produce by the evaporation of the ocean water. Hope this answer would be of big help to this assignment then.
Answer:
when fertilization takes place, the half of the chromosomes from the egg combine with the half of the chromosomes from the sperm to form a full 23 pairs of chromosomes which contain the genes of the offspring.
Answer:
b. Works within an upper and lower range
c. " Is regulatory. "
d. Is very common in biological systems
Explanation:
Negative feedback is the regulatory mechanism that maintains homeostasis by counteracting the deviation. Any change serves as a stimulus and a response is produced to reverse the change. Negative feedback is a very common regulatory mechanism to maintain internal body conditions within a narrow range.
For example, the body temperature in adults is maintained within the narrow range of around 36 -37 degrees Celsius. An increase or decrease in the body temperature from the set point is counteracted to restore the set point. An increase in body temperature is reversed by the vasodilation of blood capillaries of skin layers to lose the heat to the surroundings. On the other hand, reduced body temperature below the set point is restored by constriction of capillaries of skin layers.
According to the research, the correct option is cell membrane. It enables eukaryotic cells to keep biochemicals and related structures in close proximity.
<h3>What is cell membrane?</h3>
It is defined as a laminar structure formed mainly by lipids and proteins that prevents the entire biochemical content of the cell from dispersing and defines its limits.
It enables the exchange of water, gases and nutrients between the cell and the environment that surrounds it and has proteins that perform functions of connection, transport, reception and catalysis.
Therefore, we can conclude that according to the research, the correct option is cell membrane. It enables eukaryotic cells to keep biochemicals and related structures in close proximity.
Learn more about eukaryotic cells here: brainly.com/question/3171977
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1. Tropical rainforests 2. Savanna 3. Temperate 4. Desert 5. Taiga 6. Tundra 7. Estuary 8.fresh water 9. Marine
