H

80 70 60

40

25 10 5

- Electrode 6

D III

cl III III

Lane (D) of Known

fragment sizes.

Kilobase pairs

0

AI IVA

Wells

Agarose Gel

Chamber filled with

Unknown DNA size samples buffer solution

O A. A negative control

O B. A positive control

O C. A restriction enzyme

O D. A remote sensor

What volume of a 0.25 m solution can be made using 0.55 moles of ca(oh)2

Name the part of the the brain labeled "e".

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism