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
Yakvenalex [24]
3 years ago
8

What does it mean to say that a membrane is selectively permeable?

Biology
1 answer:
lawyer [7]3 years ago
7 0
To be selectively permeable means to only let certain things pass through. In the case of the cell, it will let things that the cell needs in and things that the cell doesn't need out.
You might be interested in
Which example is an organism?
ss7ja [257]
The answer is A. 
Why: The heart is part of an organism, so that doesn't exactly count. Soil is not alive, and neither is clay. Therefore, Bacteria must be it. Bacteria is a living thing, and can function by itself.
5 0
3 years ago
_____ are a group of organic compounds including fats, phospholipids, and steroids.
Dennis_Churaev [7]

Lipids are a group of organic compounds including fats, phospholipids, and steroids.

Lipids are a group of organic compounds that do not dissolve easily with water. Lipids include fats, oils, monoglycerides, diglycerides, triglycerides, phospholipids, hormones, vitamins (such as vitamins A, D, E, and K), and steroids. Lipids functions by storing energy for organisms, as chemical messengers between cells, tissues, and organs, and they also function as structural parts of cell membranes.

4 0
3 years ago
Read 2 more answers
Cytosine makes up 24% of the nucleotides in a sample of DNA from an organism.
Alchen [17]

Answer:

26%

Explanation:

if cytosine makes up 24%, then guanine also makes up 24%.

add these to get 48%.

subtract that from 100% to get a remaining 52%

then split the 52% between adenine and thymine to tell you that 26% is thymine

7 0
3 years ago
What is a fact for haploid????
ANEK [815]
A haploid is half of a parent cell.
6 0
3 years ago
¿Qué áreas del conocimiento me pueden <br> aportar a la ejecución del proyecto? para un huerto
tensa zangetsu [6.8K]

Answer:

Conocimientos que pueden resultar muy útiles al momento de planificar un huerto:

- biología vegetal (características de las plantas que queremos producir)

- agronomía (características del terreno utilizado)

- condiciones ambientales (meteorología), como así también la disposición del lugar

Explanation:

Para iniciar un huerto en casa es necesario tener en cuenta una serie de factores que pueden influenciar en gran medida el éxito del proyecto:

-Tener en cuenta las características de las plantas que queremos producir es fundamental para lograr un óptimo crecimento. Por ejemplo, plantas que no resisten las heladas podrían morir en ciertas regiones, con lo cual las plantas deberían encontrarse en estos casos protegidas durante su desarrollo (por ejemplo, mediante un invernáculo).

- Buscar lugares bien iluminados. La presencia de luz es un factor fundamental para el crecimiento de las plantas.

- Riego y/o precipitaciones: tener en cuenta las necesidades hídricas de las plantas que queremos producir.

- Suelo: utilizar tierra abonada suele ser la mejor opción para brindarle a las plantas la mayor cantidad de nutrientes y así garantizar un óptimo crecimiento. En el caso de usar macetas, la presencia de huecos o el uso de vermiculita puede ser de gran ayuda para permitir la escorrentia del agua.

- Espacio: es necesario tener en cuenta el espaciado entre plantas para que puedan crecer normalmente.

-Tener en cuenta las plagas (insectos, nemátodos, etc) que podrían afectar el crecimiento de las plantas.

4 0
3 years ago
Other questions:
  • 2-methylbenzamide and 3-nitrobenzoic acid both have a melting point of
    8·1 answer
  • Need Help Asap
    13·2 answers
  • Name the tissue which allows buoyancy to aquatic plants? * a) chlorenchyma b) collenchyma c) aerenchyma
    13·1 answer
  • What kind of flower was Timon wearing on his head in the hula scene of the lion king 1994?
    15·1 answer
  • Explain why natural selection cannot occur in a population that has no variation in traits.
    5·1 answer
  • The characteristic of the human immunodeficiency virus (HIV) that makes it different from other RNA viruses is that it _________
    13·1 answer
  • Scientists ask questions and develop hypotheses. After making what?
    15·1 answer
  • Which labeled cell (A,B,C,D) represents a cell in anaphase? How did you know?
    14·2 answers
  • The brain signals the body of an animal to move by transmitting electrical impulses through the neurons. An animal is then able
    6·1 answer
  • A trophic pyramid for southern lake michigan coastal<br>please answer it
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!