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svet-max [94.6K]
3 years ago
15

What is the nature of cell-walls in diatoms​

Biology
1 answer:
fgiga [73]3 years ago
3 0

Answer:

The cell walls of diatoms are made of silica. Their cell wall construction is known as frustule. It consists of two thin overlapping shells that fit into each other such as a soap box. When the diatoms die, the silica in their cell walls gets deposited in the form of diatomaceous earth.

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Does anybody have a presentation about Mendel's second law. Please I need it to do well.
Sindrei [870]

Answer:

no sorry :(

Explanation:

5 0
3 years ago
Describe the role of matter in living and nonliving things
just olya [345]
Matter is anything that takes up space. Your mass determines how big, or small you are. Or, how big or small something is. Matter is in everything. Even air has matter. Humans are made of matter. Matter makes up atoms, carbon, cells, and everything else you can think of. (Except ideas)
7 0
3 years ago
How many groups are in the modem periodic table
sweet [91]

Answer:

The correct answer is

18

Groups of the periodic table: The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups.

Hope this helps!

- Quinn <3

7 0
3 years ago
What is the correct order for the hierarchy of biological organization from the least to the most complex? (concept 1.1)?
hjlf

Answer;

Molecule, organelle, cell, tissue, organ, organ system, organism, population, community, ecosystem.

Explanation;

-The biological levels of organization of living things arranged from the simplest to most complex are: organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere.

-Organisms are highly organized, coordinated structures that consist of one or more cells. Even very simple, single-celled organisms are remarkably complex: inside each cell, atoms make up molecules; these in turn make up cell organelles and other cellular inclusions.

-In multicellular organisms, similar cells form tissues. Tissues, in turn, collaborate to create organs (body structures with a distinct function). Organs work together to form organ systems.

4 0
3 years ago
a cladogram is a branching diagram that represents suggested evolutionary relationships among organisms based on the presence of
pashok25 [27]

Answer:

The correct option is lamprey.

Explanation:

Lamprey is a kind of fish which lack jaws. They lack a true skeleton, but the cartilage is present in them. Due to lack of proper backbone, they look similar to snails. The lamprey reproduces by laying eggs in the water. Larvae tend to develop from these eggs. The lamprey releases its eggs only in freshwater. Only the mature lamprey live in the sea to act as a parasite and take food. For laying eggs, it travels to freshwater.

4 0
3 years ago
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