1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
PtichkaEL [24]
3 years ago
7

Under what circumstances does membrane transport require energy

Biology
1 answer:
Nadusha1986 [10]3 years ago
5 0
When molecules are being transported opposite to the molecules concentration gradient.

Hope i helped!
You might be interested in
Why is it important to get enough iron in your diet
Serhud [2]

This is because iron is used to make a protein called hemoglobin. This protein helps blood cells carry oxygen around the body.

7 0
3 years ago
A person who is heterozygous for hair type will have a phenotype of wavy hair. If one parent has wavy hair and the other parent
snow_tiger [21]

Answer:

C) 50%

Explanation:

If wavy hair is heterozygous then wavy is dominent and curly is recessive. So the alles for wavy would be Ww and for curly it would be ww. Put that on a punnet square and it is 50-50

8 0
3 years ago
What is the purpose of the vascular system in a plant?
iogann1982 [59]
The Vascular system transports water and sugars throughout the plant during photosynthesis.
8 0
3 years ago
Read 2 more answers
The chambers of the heart are lined with epithelium called __________.
tester [92]
Called the endocraium
8 0
3 years ago
What operation is used when simplifying fractions and conversion units?
astra-53 [7]

Answer:

  cancellation

Explanation:

A factor in the numerator is <em>cancelled by dividing it</em> by the same factor in the denominator. The quotient is 1, the multiplicative identity element.

4 0
3 years ago
Other questions:
  • What is the most important nerve of the digestive tract?
    5·2 answers
  • You are a plant physiologist who is studying the alternation of generations in ferns
    13·1 answer
  • Physical and chemical changes occur during digestion an example of a chemical change during digestion is
    7·2 answers
  • Which of the following best explains how introducing an invasive plant species to an ecosystem would affect the ecosystem over a
    7·2 answers
  • Fill in the blanks with the correct word or phrase.
    12·2 answers
  • Breathing rate and pulse rate indirectly measure cellular
    14·1 answer
  • Which of these is NOT a type of local wind?<br> A. Valley<br> B. Glacier<br> C. Mountain<br> D. Sea
    7·1 answer
  • What is MOST likely the reason the author included
    8·1 answer
  • as a result of ach stimulation, calcium ions are released from the ______ of the sarcoplasmic reticulum.
    11·1 answer
  • What is the difference between a sister and a non-sister chromatid?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!