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LUCKY_DIMON [66]
2 years ago
6

Why do we need friction in our world?

Biology
2 answers:
sammy [17]2 years ago
4 0

Friction is a force that works against motion. While walking, friction helps us maintain our stability and prevents us from slipping. Friction also works the same way with cars and vehicles in general, preventing them from skidding and helping them stop when the brakes are applied. We also need friction to make a fire.

Thepotemich [5.8K]2 years ago
4 0

Without friction between the shoes and the ground, you cannot walk properly. If there is no friction, all of us would be sliding around without any control over ourselves. While walking, you're pushing your foot back as you try to step forward. Friction holds your shoe to the ground so you can walk around.

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If a dna analysis reveals that a cell has 60 ng of adenine and 20 ng of cytosine, how much thymine and guanine are in the cell?
Serggg [28]

Answer:

Thymine= 60 ng

Guanine= 20 ng

The complementary base pairing occurs between adenine and thymine and guanine and cytosine bases.

Explanation:

According to the Chargaff rule, a double-helical DNA molecule has an equal number or equal amount of adenine and thymine bases since adenine always pairs with thymine. Similarly, the amount of guanine base is equal to that of the cytosine base.

Chargaff rule is based on the complementary base pairing between purine and pyrimidine bases. According to the given information, the amount of adenine is 60 ng. Therefore, the cell would have 60 ng thymine. Similarly, the amount of the cytosine base in the cell is 20 ng which means that the cell would have 20 ng of guanine base.

5 0
3 years ago
A dichotomous key starts with _____ information and leads to _____ information
timama [110]
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<span>A dichotomous key starts with specific information and leads to general information.
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7 0
3 years ago
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8- Most gymnosperms have reproductive structure called cones<br> true<br> false
Alla [95]

┏─━─━─━─━∞◆∞━─━─━─━─┓

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┗─━─━─━─━∞◆∞━─━─━─━─┛

Answer:

<u><em>True</em></u>

Explanation:

<u><em>Most gymnosperms have reproductive structures called cones. Male cones produce pollen. Female cones contain at least one ovule. An ovule is a structure that contains an egg cell. After being fertilized, the ovule develops into a seed.</em></u>

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Romashka-Z-Leto [24]

Answer:

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butalik [34]

Answer:

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Explanation:

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