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
lakkis [162]
3 years ago
9

Which of the following accurately describes an example of how materials can move across the cell membrane through active transpo

rt? A protein acts as a channel to allow large, hydrophilic molecules to diffuse across the cell membrane. A protein acts as a pump and moves calcium ions from an area of low concentration to an area of high concentration. The cell membrane folds to surround a substance and bring the substance inside the cell during exocytosis. Water moves by osmosis from higher concentration to lower concentration by passing through proteins called aquaporins.
Biology
2 answers:
icang [17]3 years ago
6 0

Answer:

A protein acts as a pump and moves calcium ions from an area of low concentration to an area of high concentration.

Explanation:

An active transport means a transport which utilizes ATP i.e. energy input to move substances against their concentration gradient.

Naturally, substances like ions have a tendency to move from <u>higher concentration to lower concentration</u><u>.</u> This is know as passive transport  which does not require any energy input. But, if we want to move an ion against its concentration gradient then we will have to provide energy input and such transport is known as active transport. Pumps are transport proteins which are involved in active transport in a cell. They may be located on cell membrane or plasma membrane of organelles like sarcoplasmic reticulum (ER) etc.

Examples of pumps are Na⁺ - K⁺ pumps in cell membrane, calcium pumps in  sarcoplasmic reticulum (SR).

Zinaida [17]3 years ago
3 0
I am confident that the answer should be.....<span>A protein acts as a pump and moves calcium ions from an area of low concentration to an area of high concentration.


                                      
Hope this helps.
</span>
You might be interested in
Pls help me unjumble and guess the words ty​
VashaNatasha [74]

Answer:

Farming

Overpopulation

Development

Dams

Organic

Pesticides

Fertilizer

Hydroelectric

4 0
3 years ago
Gymnosperms and angiosperms evolved ______ allowing them to live and reproduce in drier habitats than bryophytes and seedless va
Lemur [1.5K]

<u>Gymnosperms and Angiosperms-</u>

Gymnosperms and angiosperms evolved seeds and pollen grains allowing them to live and reproduce in drier habitats than bryophytes and seedless vascular plants.

<u>Properties of gymnosperms and angiosperms-</u>

Gymnosperms are plants which bear seeds without fruits or without any outer coverings. These plants also do not produce flowers. Most plants under this group have needle-shaped leaves. This is an adaptation as these plants grow in colder conditions. Gymnosperms. These plants produce pollen without bearing flowers. Angiosperms are found in almost all climatic conditions. These plants bear flowers and produce seeds that are enclosed inside a fruit or inside an ovary. The seeds of angiosperms have a single cotyledon.

Learn more about Gymnosperms and Angiosperms here-

brainly.com/question/9416370

#SPJ4

3 0
2 years ago
Write a hypothesis about the worms and lima bean plants. Be sure to answer the lab question, “How can the presence of one specie
ehidna [41]
I wish I knew but I don’t know I am so sorry but I really want to Brimley list can I please get the brain leash
5 0
3 years ago
Read 2 more answers
The relative age of a rock
tiny-mole [99]

Answer:

10,000-15,000 years ago

hope that helps uh..☺

7 0
3 years ago
Two groups of tomatoes were grown under laboratory conditions, one with humus added to the soil (Group 1) and the other a contro
charle [14.2K]

Answer:

the humus contains the minerals necessary for chlorophyll synthesis

Explanation:

<em>The yellowness of leaves in plants can be attributed to inadequate chlorophyll in the plant</em>. The chlorophyll is responsible for the greenness appearance of the leaves of plants and when it is present in inadequate quantity, the leaves appear yellowish in color.

<u>Some of the minerals necessary for the formation of chlorophyll include magnesium, nitrogen, and iron</u>. It thus means that the humus supplied to the soil of group 1 plant has the necessary minerals to synthesize chlorophyll while the soil of group 2 plants is deficient in some or all the minerals required for chlorophyll synthesis.

8 0
3 years ago
Other questions:
  • One of these four factors are incorrect in blood pressure? the heart, fluid pressure, turgor pressure, constricting of artery wa
    14·1 answer
  • How does competition influence population size
    15·1 answer
  • What wind pattern helped carry early explorers from Europe to North and South America?
    13·2 answers
  • Many of the organisms living today have not been identified because they are
    10·1 answer
  • You pull your desk along the floor in your classroom. What does this situation best demonstrate?
    14·1 answer
  • People can breed cats for specific traits such as coat color through the process of _____.
    10·1 answer
  • What type of rock is pictured here?
    8·2 answers
  • In 3-4 sentences explain why recognizing bias in people important to science?
    8·2 answers
  • PLS HELP ME!!!!!!!!!!!!!!!!
    7·1 answer
  • Which term names catalysts that speed up chemical reactions in the human body?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!