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Musya8 [376]
3 years ago
15

How long has there been life on earth

Biology
1 answer:
babymother [125]3 years ago
6 0

They said that 4.5 billion years


I hope that's help :)

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What climate zone has very little change in weather
Harrizon [31]

Answer:

Temperate Climates

Explanation:

Temperate means the weather and temperatures remain mild withuot much change

6 0
2 years ago
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18. In replication of DNA, the helix is opened and what is unzipped?
aalyn [17]

Answer:

B) Hydrogen Bond

Explanation:

Those are the bonds that the restrictive enzymes unzip and the bonds that hold the complementary bases.

4 0
3 years ago
Please help
tia_tia [17]

Answer:

True

Explanation:

During contraction of skeletal muscle fibers, the thin filaments slide inward toward the A band's center as a result of cycles of crossbridge binding and bending.

8 0
3 years ago
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If a velocity of a car is 20m/s,how much distance cover in 20 second​
stepladder [879]

Explanation:

Velocity (V) = 20 m/s

time (t) = 20 sec

distance travelled (d) = ?

We have the formula

V = d / t

20 = d / 20

d = 20 * 20

D = 400 m

The distance covered in 20 sec is 400 m

hope it will help :)❤

3 0
3 years ago
explain the mechanism of protein trafficking and its role in protein localization inside or outside the cell
IRINA_888 [86]

Cargo receptor proteins serve as chaperones and direct the cargo of proteins to a certain compartment during protein trafficking. Targeting requires the relocation of a receptor protein from a certain compartment.

<h3>What are the three ways that proteins are transported?</h3>

Transmembrane transport, such as that between the cytosol and mitochondria, peroxisomes, or the endoplasmic reticulum, is one of the three primary intracellular transport mechanisms for proteins. Vesicular transport, such as that occurring within the endosomal compartment, between the endoplasmic reticulum and the Golgi, or between the Golgi and the plasma, is the other two.

<h3>What does "protein trafficking" actually mean?</h3>

Proteins are transported during protein trafficking to the appropriate subcellular compartments or to the extracellular space (also known as the secretory pathway). According to the majority of authors, endo- and exocytosis refer to vesicle budding and fusion at the plasma membrane and are not included in the term protein trafficking.

To know more about mechanism of protein visit:-

brainly.com/question/24252019

#SPJ4

8 0
1 year ago
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