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
Norma-Jean [14]
3 years ago
10

Diatoms have cell walls composed of _____.

Biology
2 answers:
AleksAgata [21]3 years ago
8 0

Answer:

Diatoms have cell walls composed of silicon dioxide.

BlackZzzverrR [31]3 years ago
6 0

The correct answer is a - silicon dioxide.

Diatoms are single celled algae. They have a silica - based cell wall called a frustule, which gives each diatom a particular shape.

Diatoms exist as separate single cells although some may be found in groups or colonies. The ones found in colonies create very pretty forms: leaf shaped, oval , star and even like a period.

Outer shells of diatoms are quite valuable. They are used in industry in the manufacture of toothpaste to give it grit.

You might be interested in
Which of the following is not a freshwater ecosystem?
9966 [12]

Answer:

c

Explanation:

seas water isn't fresh water

4 0
3 years ago
Read 2 more answers
Inside the left venticle, the aortic vestibule is the smooth-walled, superior region that leads to the aorta. It is similar to t
wolverine [178]

Answer:

Presence of papillary muscles

Explanation:

  • Papillary muscles are structural components of the ventricles.
  • They are attached to the cusps of the mitral and tricuspid valves through connective tissue strings known as the cordinae tendeneae (heart strings).
  • These muscles prevent the prolaspse of these valves during ventricular systole.
  • Although they differ in number i.e. two in left and three in right ventricle, papillary muscles are present in both ventricles.
6 0
3 years ago
Which term identifies the process used by the cell to bring in large molecules?
Sophie [7]
Endocytosis is the process  used by the cell to bring in large molecules.
3 0
4 years ago
Read 2 more answers
Groups of skin cells form the epithelium, which lines organs and cavities in the body. The epithelium is MOST LIKELY a kind of
Mazyrski [523]
It is most likely a kind of Tissue.
6 0
4 years ago
Read 2 more answers
What does it mean when you have blue dots on the bottom of your feet?
Firlakuza [10]

It means at least one of two things, and possibly both:

-- You have been walking around barefoot on magic markers.

-- You need to see a podiatrist (foot doctor), an expert, who will examine
the area, and then tell you ... based on his expert examination ... either
that it's nothing, or else that it's something that should be treated because
it doesn't belong there.

DO NOT shop on the internet for health or medical advice.
It's possibly the stupidest thing a person can do.


8 0
4 years ago
Other questions:
  • What structure, found in
    10·1 answer
  • Does anybody know this answer?
    15·1 answer
  • Who are the three main groups involved in natural resources and what are their roles?
    8·1 answer
  • 1. How is modeling useful to scientists?
    12·2 answers
  • The nuclei of two atoms of _____________are combined to form a single atom of _________with a larger nucleus.
    6·1 answer
  • Which statement names a physical property of wood?
    9·2 answers
  • I need a Huracain Katrena chart
    6·1 answer
  • 1. Is genetic modification a helpful application of technology that makes plants resistant to pests and disease while improving
    11·1 answer
  • In 1998, paleoanthropologist Rick Potts published an article in The Yearbook of Physical Anthropology, a peer-reviewed journal.
    10·2 answers
  • Las instituciones economicas se encargan de regir
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!