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kobusy [5.1K]
3 years ago
5

Pls can some one help I have an exam soon

Biology
2 answers:
zzz [600]3 years ago
8 0
Which one do you want answered
motikmotik3 years ago
5 0

Answer:

which one?

Explanation:

uhmmmmjajaj

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Can someone help me with this question? Thank you!!
babymother [125]

Answer:18 kcal

Explanation:

Law of ecological pyramid - the production of organisms of each subsequent trophic level is always on average up to 10 times less than the production of the previous one

1800/10=180

180/10=18

6 0
2 years ago
Read 2 more answers
As a molecule moves through the plasma membrane it passes through a hydrophobic layer of phospholipid tails then a hydrophilic l
Firdavs [7]

Answer:

"As a molecule moves through the plasma membrane it passes through <em>a hydrophilic layer of phospholipid heads then a hydrophobic layer of phospholipid tails and then another hydrophilic layer of phospholipid heads".</em>

Explanation:

Biological membranes are formed by two lipidic layers, proteins, and glucans.

Lipids characterize for being amphipathic molecules, which means that they have both a hydrophilic portion and a hydrophobic portion at the same time. These molecules have a lipidic head that corresponds to a negatively charged phosphate group, which is the polar and hydrophilic portion. They also have two lipidic tails that correspond to the hydrocarbon chains -the apolar and hydrophobic portion- of the fatty acids that esterify glycerol.

Membrane lipids are arranged with their hydrophilic polar heads facing the exterior and the interior of the cells, while their hydrophobic tails are against each other, constituting the internal part of the membrane.

Through this lipidic bilayer, some molecules can move from one side of the cell to the other, which happens because of concentration differences. When this occurs, molecules must pass through the hydrophilic layer of phospholipid heads then through the hydrophobic layer of phospholipid tails and then again through another hydrophilic layer of phospholipid heads.              

3 0
3 years ago
The area of land from which all water in it drains into the same place is known as a(n)
Taya2010 [7]
I believe it should be watershed
5 0
3 years ago
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What's the difference between jet streams and global wind belts
Zolol [24]
Jet streams are high speed winds that comes from the west and Global wind<span> belts are when the Earth gets the right amount of heat and the Earths spin.

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6 0
3 years ago
How do autotrophs get nutrition
zepelin [54]

Answer: Most autotrophs use a process called photosynthesis to make their food. In photosynthesis, autotrophs use energy from the sun to convert water from the soil and carbon dioxide from the air into a nutrient called glucose.

Explanation:

3 0
3 years ago
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