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Gekata [30.6K]
3 years ago
10

Please help me I need help

Biology
1 answer:
wel3 years ago
3 0
Since the number before the tens place is 1, that means you will round the number down instead of up so your answer is : 
4620
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Leaf anatomy. Did I label this diagram correctly?
grin007 [14]

Yes, you've labelled them correctly. For your reference, here are a few details for each leaf structure in the labels.

Cuticle: Also can be called as waxy cuticle, it can help reduce water loss from the leaf, since it is impermeable to water. It is usually thicker in the top of the leaf comparing to the bottom side of the leaf, as the sunlight shining on the top of the leaf can increase the chance of water evaporation.

Upper epidermis: They're cells which act as barriers. They can prevent the entry of diseases. They're also so thin and transparent that sunlight can be passed through.

Palisade mesophyll cells: They're the main location for photosynthesis, where the plant make energy by using sunlight. Chloroplasts, which absorbs sunlight, are mostly in these cells, (although they also exist in other leaf parts, but not as many).

Xylem and Phloem: They're collectively called the vascular bundle, or vein. Xylem transports water and mineral ions from soil to leaf, and phloem transports sugar and amino acids from places of production (leaf) to places for usage or storage.  

Spongy mesophyll cells: They also have a few chloroplasts, but not as many as palisade mesophyll cells. They're loosely packed to allow gas to pass through and exchange.

Lower epidermis: similar function to upper epidermis.

For further notice, note that the missing structures from the diagram are guard cells and stomata, usually lies in the lower epidermis. Stomata are pores which allows waste products from photosynthesis (oxygen) to evaporate away and carbon dioxide from the air outside to enter the leaf. Guard cells are just the cells around the stomata, controlling the size of the stomata to increase or reduce water loss/carbon dioxide intake.


3 0
3 years ago
Why do phospholipids form a bilayer in water?
snow_lady [41]

Answer: Phospholipids have hydrophobic (water fearing) tails which face each other to form the core of the bilayer while their polar (hydrophilic) head groups face outward.

Explanation: Phospholipids are components of cell membrane. Phospholipids are made up of two parts: the polar (hydrophilic) head group and the nonpolar (hydrophobic) tail. The non polar tails of the Phospholipids are water fearing while the polar head groups are water loving, therefore when phospholipids are mixed with water the hydrophobic tails arrange themselves in a way that they will not come in contact with water molecules. The hydrophobic regions of the lipids face each other forming the interior of the bilayer while the polar head groups face outwards interacting with the surrounding water.

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Why/how did the evolution of bipedalism advance human evolution?<br><br> PLEASE ANSWER ASAP
ANTONII [103]

Answer:he host of advantages bipedalism brought meant that all future hominid species would carry this trait. Bipedalism allowed hominids to free their arms completely, enabling them to make and use tools efficiently, stretch for fruit in trees and use their hands for social display and communication.

Explanation:

4 0
3 years ago
How is water disturbed though the biosphere?
Colt1911 [192]
If you meant "distributed" and not "disturbed" it is distributed through the water/ hydrologic cycle.

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3 years ago
Which cell structure serves the stated function in both eukaryotic and prokaryotic cells?
tamaranim1 [39]

Answer:

Cytoplasm

Explanation:

Eukaryotic cell: cell membrane, cytoplasm and nucleus

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7 0
3 years ago
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