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
djyliett [7]
2 years ago
15

Transport of materials into a cell against a concentration gradient, from low to high, requires A) water. B) energy. C) osmosis.

D) a passageway.
Biology
2 answers:
N76 [4]2 years ago
5 0
The answer to this is B
sesenic [268]2 years ago
3 0

Answer:

b) energy

Explanation:

To survive, cells require many substances to be at higher concentrations inside the cell than outside of it. This is known as active transport and requires cell energy.

You might be interested in
A template strand of DNA contains nucleotides in the following proportions: 14% adenine
MAXImum [283]

Answer:

The proportions of  nucleotides in the newly formed complimentary strand will be:

14% Thymine (T), 33% Adenine (A), 21% Guanine (G), 32% Cytosine (C).

Explanation:

In a double stranded DNA, the nucleotides of one strand binds with nucleotides of another strand through hydrogen bonds.

Adenine binds with thymine by two hydrogen bonds (A=T) and guanine binds with cytosine by three hydrogen bonds (G≡C).

So, the complimentary strand must have

  • thymine equal to the amount of adenine in template strand.
  • adenine equal to the amount of thymine in template strand.
  • guanine equal to the amount of cytosine in template strand.
  • cytosine equal to the amount of guanine in template strand.
3 0
1 year ago
Select the correct answer from each drop-down menu. Sodium and potassium ions are essential for muscle contractions of the heart
____ [38]

Answer:

1) By breaking of ATP to ADP

2) The sodium and potassium ions are transported using active transport process!

Explanation:

In cell, the movement of ions across the membrane at the expense of energy is known as Active Transport. The energy is used in the form of ATP(Adenosine Triphosphate) that gets converted to ADP(Adenosine diphosphate) during transport. It takes the ions from high concentration to low concentration. ADP contains one less phosphate group that ATP, as their name indicates and plays a prime role in the flow of energy to the cells.

5 0
3 years ago
Read 2 more answers
a double blind study is one in which neither the researchers nor the subjects know who is receiving the placebo why are studies
djyliett [7]

The studies are designed this way b/c it removes the power of suggestion and the double-blind study keeps both researchers and participants in the dark. So this compared to who is receiving the treatment which is relevant b/c it stops the researchers from accidentally overbalancing the study participants, or unintentionally favoring their assessment of the conclusions.

4 0
2 years ago
Which biogeochemical cycle is directly associated with fossil fuels
vekshin1
Carbon cycle is associated with fossil fuels

4 0
3 years ago
Complete the table of the following element.
Lorico [155]
It has11 protons and neutrons atomic number=11 mass=22

8 0
2 years ago
Read 2 more answers
Other questions:
  • If a 10mL object has a density of 1.5g/mL, what would its mass be (in g)?
    7·1 answer
  • !ANSWER ASAP!
    5·2 answers
  • Cells are the basic units of life.
    10·1 answer
  • How many receiving Chambers and outgoing chambers does the heart have
    7·2 answers
  • Many present-day animal phyla appeared suddenly in fossils formed 535-525 million years ago, during the paleozoic era of the pha
    6·1 answer
  • Is a fox chasing after a rabbit, competition, predation, or symbiosis?
    7·1 answer
  • Type of asexual reproduction that produces a bud <br> is called ?
    10·1 answer
  • Which is one way in which photosynthesis is involved in the carbon cycle?
    5·1 answer
  • What organelle processes and sorts proteins to be shipped
    15·1 answer
  • Which of these should be reportable reasons to protect public health?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!