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3 years ago

Can someone please describe the five factors of evolution?? Thanks so much♥♥♥

2 answers:

7 0

There are five forces which play major roles in contributing to such genetic variations. They include mutation, natural selection, gene flow, genetic drift, and non random mating. In terms of fitness, only natural selection strives to make the individual more fit to the environment.

Hope This Helps!

Can I get Brainliest? PLs

belka [17]3 years ago

5 0

Answer:

Five different forces have influenced human evolution: natural selection, random genetic drift, mutation, population mating structure, and culture. (oh and btw ur so pretty :D)

Explanation:

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What animals eye is this?

o-na [289]

Answer:

i dont know why but it looks like a frog or a lizard sorry if im wrong

Explanation:

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2 years ago

(a) Identify the most likely mode of transport across the membrane for substance L. Explain how information provided helps deter

Viefleur [7K]

Active transport occurs against the electrochemical gradient. It needs energy to move molecules from the lower concentration side to the higher concentration side. The mode of transport is active transport. 

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There are three main different types of transport across the membrane

Simple diffusion ⇒ Does not need energy to occur
Facilitated transport ⇒ Does not need energy to occur
Active transport ⇒ Needs energy to occur

Active transport is the transport of molecules that move against the electrochemical gradient, so it does need energy to happen.

Molecules move from the lower concentration side to the higher concentration side of the membrane.

Carrier proteins are in charge of active transport. The needed energy might proceed from the ATP molecules or the membrane's electric potential.

In the exposed example, a scientist wants to determine how substance L enters a cells in a culture.

The cells maintain a 120 mM intracellular concentration of substance L.

Varying external concentrations of substance L (10 to 100 mM) in culture medium (Table 1).

Table 1. Rate of entry of substance L into mammalian cells in culture

External concentration of substance(mM) Rate of entry of substance L

10 5%

20 25%

30 45%

40 65%

50 80%

60 90%

70 95%

80 100%

90 100%

100 100%

Now, we need to identify the most likely mode of transport across the membrane for substance L, and explain how information provided helps determine the most likely mode of transport.

We know that the intracellular concentration is 120mM.

As we can see, this concentration exceeds all of the culture media concentrations. Yet, the substance keep moving into the cell.

As the concentration inside the cell is always higher than the concentration outside, we can assume that this is not passive transport because the molecule transport is going against its concentration gradient.

Hence, the remaining option is active transport. And as said before, we can see it because the substance keeps crossing the membrane toward the cell interior despite its concentration being higher in the interior of the cell than in the exterior.

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6 0

3 years ago

Identity the object made from a nonrenewable resource,

Natasha_Volkova [10]

Answer: flowers,other minerals

8 0

3 years ago

Firewood is made up of cellulose, which is a polymer of glucose molecules. When burning, heat and light are given off, indicatin

skelet666 [1.2K]

Answer:

Exergonic reaction

Explanation:

A chemical reaction which is associated with a release of energy and thus, is associated with a negative free energy change is said to be an exergonic reaction.

An exergonic reaction owing to the negative free energy change is a spontaneous reaction.

The energy that is released in the exergonic reaction is usually observed in the form of heat and light.

The energy is released due to the breaking of the chemical bonds.

Therefore, on burning of the firewood the bonds between the glucose molecules break up which leads to the release of energy in the form of heat and light and this is thus, an example of an exergonic reaction.

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3 years ago

In the right atrium, the auricle and anterior wall exhibit obvious muscular ridges called

san4es73 [151]

In the right atrium, the auricle and anterior wall exhibit obvious muscular ridges called MUSCULI PECTINATI.

Musculi pectinati or pectinate muscles are identified as specialized intracardiac muscle. The muscular ridges are like combs. These ridges help the right atrium dilate without much walls stress during adverse loading conditions.

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3 years ago

Can someone please describe the five factors of evolution?? Thanks so much♥♥♥​

Can someone please describe the five factors of evolution?? Thanks so much♥♥♥