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Archy [21]
3 years ago
10

When you rode a bicycle, when is friction helpful and when is it not helpful? Explain

Biology
1 answer:
Gala2k [10]3 years ago
8 0
Friction is helpful when trying to slow the bike but is not helpful when trying to gain speed

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A researcher is studying different mutations in yeast. He isolates one yeast strain that fails to properly form replisomes. When
olga nikolaevna [1]

Answer:

The correct answer is "both Cdc6 and Cdt1"

Explanation:

The replisome is a complex molecular system that allows for the replication of DNA in yeast. There are multiple genes that participate in the replisome function, however if a researcher finds out that a yeast strain fails to properly form replisomes it is very likely that the genes that might be mutated are both Cdc6 and Cdt1. Cdc6 and ORC are the genes that send the signal to the yeast to start the replisome formation, and Cdt1 is a DNA replication factor that if it is mutated it could cause that yeast is not able to form the replisome.

3 0
3 years ago
Question 5 unsaved in a tide pool, 15 species of invertebrates were reduced to 8 after one species was removed. the species remo
sesenic [268]
The species was a keystone species.

Keystone species are the species that ''hold the ecosystem together''.
They have an important role in the trophic networks (food chains) and often they can even afflict changes in the abiotic part of the ecosystem (change the composition of soil, purify the water, lower the effect of the wind etc)
Therefore, when a keystone species is removed it affects greatly the whole ecosystem.
8 0
3 years ago
Which event triggers the start of black hole formation?
docker41 [41]

Answer:

A stellar-mass black hole forms when a star with more than 20 solar masses exhausts the nuclear fuel in its core and collapses under its own weight. The collapse triggers a supernova explosion that blows off the star's outer layers.

Explanation:

8 0
2 years ago
True or False: Atmospheric nitrogen (N2 gas) is easily taken up and used by plants and animals.
Brrunno [24]

Answer:

False

Explanation: im only in the 8th grade

6 0
2 years ago
Read 2 more answers
​Wendell can tell that the trees on the mountain are very far away, because rather than being able to see individual trees and t
vovikov84 [41]

Answer:

The correct answer is - texture gradient.

Explanation:

The texture gradient is a depth cue that is a distortion in comparison of size in objects that are farther or closer. In this cue, it looks denser as u move away from the object.

It is dependent on the sense of the depth perception as Wendell can easily tell that trees on the mountain are far from him as he only sees a dense green patch instead of trees individual trees and space in between in them.

Thus, the correct answer is option - texture gradient.

3 0
3 years ago
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