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Tanzania [10]
2 years ago
9

In a pcr reaction, the strands of dna are first separated by ___.

Biology
1 answer:
Trava [24]2 years ago
3 0

Answer:

In a pcr reaction, the strands of dna are first separated by <u>heat</u>.

Explanation:

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Name two substances in the body that will move based on the principles of diffusion
Nina [5.8K]
Hello there!

The principle of diffusion consists in the movement of substances through a membrane from a zone with high concentration, to a zone with low concentration, until the concentration is equal on both sides of the membrane. 

An example of diffusion is the process that happens when we breathe. Two substances in the body that will move based on the principles of diffusion are Carbon Dioxide and Oxygen. Carbon Dioxide will move from the bloodstream to the alveoli, and Oxygen will move from the alveoli to the bloodstream. 
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3 years ago
Based on the information in Graph 1, explain the relationships between shell color, presence of banding, and habitat. Use the
Sophie [7]

There is a direct relationship between shell color, presence of banding, and habitat because they greatly affect each other in various ways.

<h3>Relationship between shell color, presence of banding, and habitat </h3>

Shell colour shows stronger and more consistent variation with habitat than do banding patterns. Yellow colour shells are present at higher frequencies in open habitats than in woods or closed habitats.

While on the other hand, banding serve as camouflage to protect the organism from bird predators so we can conclude that there is a direct relationship between shell color, presence of banding, and habitat.

Learn more about shell here: brainly.com/question/26039758

7 0
2 years ago
Which of the following is a correct difference between active transport and facilitated diffusion?
sweet-ann [11.9K]

Answer:

Active transport requires energy from ATP while facilitated diffusion does not

Explanation:

Active transport and facilitated diffusion with the use of channel and carrier proteins are both ways by which ions, polar and large molecules cross a selectively permeable membrane.

The major difference is that; Active transport transport these particles from a low to high concentration, which is against concentration gradient and hence, energy is required to perform the task

Facilitated diffusion transport from a high to low concentration, which is through a concentration gradient and hence, no energy is required to perform the task.

6 0
3 years ago
As blue whales migrate, they move between areas of high and low sunlight intensity. When they are in areas
OLEGan [10]
I think it’s B but i’m not sure i’m sorry if i’m wrong
6 0
2 years ago
Dense irregular connective tissue without a synovial cavity would be found connecting the bones involved in which type of joint?
Yakvenalex [24]

Answer:

Fibrous  is the type of joint involved.

Explanation:

Diarthrosis is present at articulating bones which is responsible for the movement. Surrounding synovial capsules identifies it. synovial capsules which secretes synovial fluids to nourish and lubricate the joints while it acts as a shock absorber, surrounds the bones of synovial joints.

Smooth, hyaline cartilages which is of glass like, reduces the friction while movement and are present at the lower of the joint bones. this synovial cavity and regular, dense connective tissue which is responsible for the formation of articular capsules related with accessory ligaments.

3 0
3 years ago
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