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V125BC [204]
3 years ago
5

Which of the following statements are true of the cell wall?

Biology
1 answer:
marta [7]3 years ago
8 0

The answer is B because:

Cell walls are made of cellulose and proteins (hence II).

Animal cells don't have cell walls (only cell membrane) but plant cells do so IV

They must be semipermeable since materials for example carbon dioxide and water for photosynthesis have to go into the cell <em>some</em> way.

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When a plant is genetically identical to its parent plant what is this called
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4 years ago
What are the most numerous cells in the lungs?
Umnica [9.8K]
The most numerous cells in the lungs are dust cells, also known by their scientific term of alveolar marcrophages.
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3 0
3 years ago
1 Which of the following statements is not true concerning all living things?
Alekssandra [29.7K]

Answer:

they have cell walls as an outer boundry

Explanation:

the cells of all living things do not have cell wall. animal cells do not have cell wall. protozoans also do not have cell wall. while cells of plants algae fungi and bacteria have cell wall.

6 0
3 years ago
Why is the phloem in a leaf important to the roots of a plant apex?
Nana76 [90]

Answer:

The correct answer will be- phloem transports photsynthetic products to the roots

Explanation:

Phloem is the vascular tissue which specializes in transporting the solute molecules like sugar in the form of sucrose to in the plants.

The phloem connects the photosynthetic organ (Leaves)  to non-photosynthetic organs (stem and roots) of the plants by transporting the photosynthates or sucrose to various parts.

Since the roots also need the energy to perform metabolic functions so need the photosynthates to synthesize the energy molecule. They receive the photosynthates from the phloem.

Thus, phloem transports photosynthetic products to the roots is the correct answer.

5 0
3 years ago
Read 2 more answers
The level of protein structure that describes all aspects of the three-dimensional folding of a polypeptide is referred to as
vfiekz [6]
<span>Tertiary</span> structure - three-dimentional structure of one polypetide chain.

Proteins are considered as for their conformation in four different stages:

Primary structure is referred solely to the sequence of amino acids<span> in the polypeptide chain.
</span>Secondary structure is the immediate basic folding of a protein and it can be α-helix and β-sheets.
Tertiary structure is the three-dimentional folding of a singles polypetide.
Quaternary structure is the thee-dimenional structure that results from the combination of two or more individual polypetides working as single protein.
3 0
3 years ago
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