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vovikov84 [41]
3 years ago
5

True or False: When you compare the DNA of two closely related organisms, their DNA would be more similar than the DNA of two di

stantly related organisms.
Biology
2 answers:
Kitty [74]3 years ago
5 0

Answer:

true

Explanation:

if they are similar, the dna is going to be similar

if they are different, the dna is going to be different

Masja [62]3 years ago
5 0

Answer:

True

Explanation:

the more closely related the more similar in DNA they’ll be

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SOMEONE PLZ HELP!!!!!!!!!
mezya [45]

Answer:

Organelle :)

Explanation:

5 0
3 years ago
In which case would facilitated diffusion be needed?
melomori [17]

Answer:

The voltage-gated potassium channels associated with an action potential provide an example of what type of membrane transport?

A. Simple diffusion.

B.<u> Facilitated diffusion. </u>

C. Coupled transport.

D. Active transport.

You are studying the entry of a small molecule into red blood cells. You determine the rate of movement across the membrane under a variety of conditions and make the following observations:

i. The molecules can move across the membrane in either direction.

ii. The molecules always move down their concentration gradient.

iii. No energy source is required for the molecules to move across the membrane.

iv. As the difference in concentration across the membrane increases, the rate of transport reaches a maximum.

The mechanism used to get this molecule across the membrane is most likely:

A. simple diffusion.

<u>B. facilitated diffusion. </u>

C. active transport.

D. There is not enough information to determine a mechanism.

Carrier proteins - exist in two conformations, altered by high affinity binding of the transported molecule. Moves material in either direction, down concentration gradient (facilitated diffusion). EXAMPLE: GluT1 erythrocyte glucose transporter.

Channel proteins - primarily for ion transport. Form an aqueous pore through the lipid bilayer. May be gated. Moves material in either direction, down concentration gradient (facilitated diffusion). EXAMPLES: Voltage-gated sodium channel, erytrhocyte bicarbonate exchange protein.

This might be helpful... because I don't know anything about facilitated diffusion.

5 0
3 years ago
When the concentration of a substance higher on one side of the cells selectively permeable membrane, certain molecules may move
grin007 [14]

Answer:

A.

Explanation:

osmosis and diffusion are both passive transport bc it doesnt require energy and only moves down cocentration gradient, never against concertration gradient. Give me a brainliest if i helped! ♡

8 0
3 years ago
Which of the following structures help guide the articulating bones?
Nina [5.8K]
I think it is D hope I’m right
7 0
2 years ago
Which factor most likely caused animals and plants in India to differ greatly from species in nearby southeast Asia?
Dominik [7]

Answer:

India was a separate continent until 45 million years ago

Explanation:

India was part of the Gondwanaland continent which was one of the two remnants of Pangaea, while Asia was part of Laurasia, the other remnant of Pangaea. Because these two land masses were separate, the animals and plants were evolving separately for millions of years. India further separated from Gondwanaland, and it was actually a very large island for millions of years, resulting in isolation and development of unique animals and plants because of it. As India was moving it reached Asia and collided with it, thus becoming one land mass. Some Asian species managed to get in India, but mostly in its northern parts, while the central and southern parts remained dominated by the indigenous species. The Himalayan Mountain Range that formed because of the collision also helped in preserving lot of the indigenous species as it became a natural barrier that most species can not go through.

6 0
3 years ago
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