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MariettaO [177]
3 years ago
14

True or false ? Cell membranes are selectively permeable, allowing only some materials to cross the cell membrane. This

Biology
2 answers:
Nikolay [14]3 years ago
4 0

Answer:

True

Explanation:

Cell membranes are selectively permeable because of the structure of the phospholipid bilayer.

This bilayer only lets certain things in because it depends on the polarity, size,  and type of molecule.

For example, glucose molecules are too large to enter. But, carbon dioxide molecules can go in and out easily because of their small size.

devlian [24]3 years ago
4 0

Answer:

This statement is True

“One way that a cell maintains homeostasis is by controlling the movement of substances across the cell membrane. The lipid bilayer is selectively permeable to small, nonpolar substances. Proteins in the cell membrane include cell-surface markers, receptor proteins, enzymes, and transport proteins.”

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Jonathan used the following soil triangle to identify a sample of soil as sandy clay.
sineoko [7]

The description of soil according to Jonathan is as follows:

  • Mostly large grains, with a gritty texture, 45% sand, 5% clay, and 45% silt ---- Silty loam soil.
  • Mostly large grains, with a sticky texture, 55% sand, 40% clay, and 5% silt ----- Sandy clay soil.
  • Mostly small grains, with a sticky texture, 30% sand, 50% clay, and 20% silt ----- Clay soil.
  • Mostly small grains, with a smooth texture, 30% sand, 5% clay, and 65% silt ----- Silty loam soil.

<h3>What is Soil Texture?</h3>

Soil texture may be defined as a classification of soil on the basis of its physical appearance, texture, and properties.

In this question, the texture and composition of other soil are illustrated briefly with respect to each common soil type.

Therefore, it is well described above.

To learn more about Soil texture, refer to the link:

brainly.com/question/946875

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6 0
2 years ago
What is the function of Primase?
Usimov [2.4K]

Answer:

Explanation:

"Primase is an enzyme that synthesizes RNA sequences called primers.  primase produces RNA molecules, the enzyme is a type of RNA polymerase."

Hope this helps :)

3 0
3 years ago
Single-celled or unicellular fungi are: molds monolyathids protoplasm yeasts
Tju [1.3M]
The answer is yeasts.

Fungi is the kingdom of Eukaryota domain and includes unicellular organisms and multicellular organisms. Y<span>easts are u</span>nicellular fungi. But, some species have an ability to develop some kind of multicellular characteristics such as pseudohyphae that forms by connecting budding cells.
8 0
3 years ago
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What process causes carbon dioxide to move from high concentrations in the atmosphere to lower concentrations inside the
Tamiku [17]

Answer:

I think it's photosynthesis

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2 years ago
Which of the following is a form of stored energy?
Crazy boy [7]

Answer:

heat energy

Explanation:

6 0
3 years ago
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