Answer:
b. It allows gas exchange while preventing water loss
Explanation:
Amniotic eggs are the feature of land animals such as reptiles, birds, mammals, etc. The amniotic eggs have four extra-embryonic membranes. This semipermeable protective shell allows the exchange of respiratory gases but does not support the transport of water out of the egg.
The ability to maintain the water inside the egg while permitting gaseous exchange is the specific feature of amniotic eggs and allowed diversification of land animals in the land habitats.
Answer:
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Explanation:
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The first conformer cis-isomer (Picture 1) has both substituents in equatorial positions. Other conformer (on the right) has both substituents in axial positions. The conformer with both substituents in equatorial positions is more stable.
Trans isomers have one substituent in an equatorial position and the other in an axial position (Picture 2). The conformer with the tert-butyl group in the equatorial position is more stable because tert-butyl group is larger.
Answer:
There are four fates for acetyl CoA in the human body. Here are all the fates of acetyl CoA:
Explanation:
1. Acetyl CoA in the mitochondria can be used in the electron transport chain to form CO₂ and water.
2. Acetyl CoA can synthesize ketonebodies which are oxidized for energy in the liver.
3. Acetyl CoA outside of the mitochondria and inside the cytosol can also be used to make fatty acids from glucose.
4. Acetyl CoA in the cytoplasm will also go on to synthesize cholesterol.
Altogether, the functions of acetyl CoA in the body is diverse and multi functional. The cells in other parts of the body do most of these functions but the ketone bodies formed in the liver creates a large amount of ketone bodies that are transported elsewhere.
Answer:
These creatures depend on the sea water for nutrients, protection and to move about. At low tide,many of these creatures are exposed to the air, leaving them at risk of predator attacks andoxygen depletion. The whole eco-system of the tide pools would simply not exist without theconstant movement of the tides
Explanation:
