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djverab [1.8K]
3 years ago
10

Under what circumstances does membrane transport always require energy?

Biology
1 answer:
kondor19780726 [428]3 years ago
8 0
It requires energy when a substance must travel against a concentration gradient through the membrane
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Samantha está probando la velocidad del sonido en una montaña muy fría. Mide la temperatura en -20 ° C. Calcula la velocidad del
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Answer:

318,6 ms-1

Explanation:

Como sabemos que la relación entre la velocidad del sonido en el aire y la temperatura viene dada por;

V = 331√T / 273

Dónde;

V = velocidad del sonido

T = temperatura en kelvin = (-20) + 273 = 253 K

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The acetabulum is a fossa formed by the ilium, ischium and pubis which with the femoral head forms the coxal joint.

The acetabulum is made up of the three bones that make up the coxal bone (hip bone).

The ischium, which offers the lower and side limits to the acetabulum, makes up somewhat more than two-fifths of the structure.

Less than two-fifths of the acetabulum's structure is provided by the ilium, which also serves as the top limit of the joint.

The pubis, which is close to the midline, forms the remainder.

The acetabulofemoral joint (art. coxae), also known as the coxal joint, is the joint between the head of the femur and the acetabulum of the pelvis.

Its main job is to support the weight of the body in both static (such as while standing) and dynamic (such as when walking or running) postures.

Learn more about Hip joint here brainly.com/question/12522711

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