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Ludmilka [50]
3 years ago
9

How does crossing-over result in genetic recombination?

Biology
1 answer:
dolphi86 [110]3 years ago
7 0

Answer:

D

Explanation:

crossing over is where the homologous chromosomes exchange their genetic material through synapse

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Which of these is a chemical property of a substance?
Oksanka [162]
D. flammability 
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3 years ago
Explain the role of enzymes as biological catalysts that lower the activation energy of a reaction.
tia_tia [17]

Answer:

Enzymes are one kind of protein which functioning as catalyst  that speed up reactions by lowering activation energy.Enzyme accelerate a reaction without altering its chemical equilibrium.

Explanation:

Energy which is required for  start a biochemical reaction is called activation energy.Activation Energy helps to jump and start a thermodynamically favorable reactions.

Enzymes can  many  way to its activation energy.

1. The enzyme may hold the substrates in such a way as to distort the substrate bonds closer to their form in the transition state. This reduces the amount of energy needed to complete the transition.

2.Enzyme create a charge distributor which opposite of transition state his lowers the energy of the transition state and decreases the activation energy.

3.The enzyme may reduce the reaction entropy   by bringing substrates together in the correct orientation to react.

4. The enzyme may provide a completely different chemical pathway for the reaction. It may form new bonds in the ES complex that would be difficult to form without the enzyme.

6 0
3 years ago
All Electromagnetic Waves travel at 3.0 x 108
Gnoma [55]
I think the Answer is c
8 0
2 years ago
Help please!! I'll name you brainliest!!
Triss [41]

Answer:

sodium can form an ionic bond with fluorine

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fluorine is f ;)

this happens because the sodium atom needs to lose an electron so the fluorine electron can join and create the bond.

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Describe the relationship between the wavelength and frequency of electromagnetic waves
larisa [96]

Answer:

Frequency is inversely proportional to wavelength.

Explanation:

frequency is the number of oscillations in a unit of time.

Wavelength is the length between one oscillation and the next oscillation.

take two springs and 4 pins. (springs should have loops or hooks at terminals to attach to pins.)

Now get two pins and pin them at a certain distance apart.

take the first spring and attach its two terminals to the pins.

Repeat the above procedure, but double (increase the distance x2) the distance between two pins.

Now you have to measure how many coils are there within 5cm of the two springs.

you'll observe that the second spring has half the coils of the first spring within 5cm.

In here no. of coils is the frequency

5cm length is time.

distance between coil is the wavelength.

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3 years ago
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