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Kipish [7]
3 years ago
13

Greater amounts of the pigment carotene are produced when the skin is exposed to the sun

Biology
1 answer:
vazorg [7]3 years ago
3 0
The most abundant protein is dead epidermal structures such as hair and melanin.
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In a typical plant, when are stoma generally open?
Archy [21]

Answer:

In many plants, stomata remain open during the day and closed at night. Stomata are open during the day because this is when photosynthesis typically occurs. Hope this helps. : )

Explanation:

6 0
3 years ago
describe the water cycle here on Earth and explain how it demonstrates the law of conservation of matter.
Nitella [24]

Answer:

Start with evaporation. Place a full cup of water in front of a sunny window. Use a marker to make a line at the beginning water level.

After evaporation we have condensation. When the water vapor reaches the sky it cools to form clouds.

Finally, a precipitation experiment. Again, fill a cup almost full with water.

Explanation:

Matter is conserved because atoms are conserved in physical and chemical processes. As complex as the water cycle is, water molecules are conserved and endlessly recycled in nature. Conservation of mass is a physical law that s never broken.

you're welcome!!

8 0
3 years ago
with regard to enzymes, what can be said to the relationship between the substance and the active site?
77julia77 [94]
The substrate and the active site both need to fit together perfectly in order for the enzyme to work properly. If their shape is changed, typically through heat or a change in pH, the enzyme will not work.
7 0
2 years ago
Read 2 more answers
Pollen is produced by the process of
MariettaO [177]

Answer:

Pollen is produced during the pollen formation cycle of a flower.

Explanation:

6 0
3 years ago
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When the protein gramicidin is integrated into a membrane, an H+ channel forms and the membrane becomes very permeable to proton
Naddika [18.5K]

Answer:

The electron transport chain may be defined as the sequential steps of the oxidation and reduction of the cytochromes. The electron transport chain is important for the production of ATP.

The gramicidn protein is an ionophoric antibiotic that can affect the electron transport system. The electron transport rate, oxygen uptake and proton pumping remains the same as more hydrogen ions will enter in the cell.  But the ATP synthesis rate might decrease and completely stop by using gramicidin.

8 0
3 years ago
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