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snow_lady [41]
3 years ago
13

Explain the difference between the theory of continental drift and the theory of plate tectonics?

Biology
1 answer:
Gre4nikov [31]3 years ago
5 0
 theory of continental drift, the world was made up of a single continent through most of geologic time. ... According to the generally acceptedplate-tectonics theory<span>, scientists believe that Earth's surface is broken into a number of shifting slabs or </span>plates<span>, which average about 50 miles in thickness....</span>
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Why are lipids unique when compared to the other macromolecule groups?
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Lipids are unique because, they are made from one carbon skeleton unlike the other macro molecules groups which are made from smaller building blocks.
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4 years ago
In what region of the United States did most of the battles shown on the map occur?
Alexeev081 [22]

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3 years ago
Approximately 80% of the energy used for active transport is devoted to the reabsorption of __________. approximately 80% of the
MrRissso [65]
The correct answer for both blanks is "Sodium".
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4 0
3 years ago
Why are pigments such as chlorophyll needed for photosynthesis
Vlad [161]

Answer:

The chlorophyll pigment have photosystem 680/ PS I which captures the sunlight. Then the pigments gets excited and photosynthesis starts. Without chlorophyll photosynthesis can't happen.

Explanation:

Photosynthesis occurs in the chlorophyll pigment of the plant. They have the capacity to trap light energy and convert its energy to form glucose and oxygen.  

The chlorophyll is a double layer membrane structure. In it two photosystems works i.e. photosystem I and photosystem II. In the photosystem I light is trapped.  

In the chlorophyll thylakoids are present which have photosystem 680. It captures the photons coming from the sun. The photons are the light of different wavelengths which are absorbed by plants.  

The photon have more energy, and when it comes in contact with PS 680, the pigments get excited. Then they release high energy electrons which helps to form ATP, NADPH. Because it is a light dependent reaction.

Glucose and oxygen are formed in the stroma as it does not require light. It is a light independent reaction.

Therefore, chlorophyll is first require to capture photons coming from sun.

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3 years ago
The spinal cord is automatically arranged with
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cervical region

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central canal

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3 years ago
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