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
Snezhnost [94]
2 years ago
12

Diatoms have cell walls composed of _____.

Biology
2 answers:
Stels [109]2 years ago
6 0
Diatoms have cell walls composed of silicon dioxide.

A. silicon dioxide.
Gnesinka [82]2 years ago
6 0

Answer: A. Silicon dioxide

Diatoms are unicellular algae that are found in the freshwater, brackish and marine water. These organisms exhibit cell wall that are made up of silica that is hydrated silicon dioxide. This type of cell wall is called as frustule. The cell wall is divided into two valves called as thecae.

You might be interested in
Unicellular organisms would most likely have _____.
Deffense [45]
Isogametes because they have the same size and shape.
6 0
2 years ago
Read 2 more answers
What happens to the pH of the battery acid if you dilute it to a 0.1 M solution (0.1L battery acid and water to 1.0L)?
Diano4ka-milaya [45]
It becomes more alkaline where pH will be more than 8
4 0
3 years ago
Which statement is true about gold and helium
RideAnS [48]

Answer:

needs more info to be answered could you state them down or put a pic

Explanation:

4 0
3 years ago
Matthew and Sofia are packing lunches to take to work. Which of the following lunch choices is highest in folate? 1. tuna salad
cluponka [151]

Answer:

Option 4

Explanation:

Folate is vitamin B and occurs naturally in various food items such as green leafy vegetable, lentils, peas, beans, in fruits such as banana, melon, and enriched products such as bread, juices etc. Folate is essential for making up genetic material or DNA. Out of all given options, option 4 has both lentil and spinach (green leaves) which are rich source of folate. Option 1 has bread as a source of folate. Hence, the correct answer is option 4.

7 0
3 years ago
Cell walls are made out of cellulose. What type of organic compound is this?
AleksandrR [38]
Organic compound is generally any chemical compound that contains carbon. Due to carbon's ability to catenate (form chains with other carbon atoms), millions of organic compounds are known. Study of the properties and synthesis of organic compounds is the discipline known as organic chemistry. For historical reasons, a few classes of carbon-containing compounds (e.g., carbonates and cyanides), along with a handful of other exceptions (e.g., carbon dioxide), are not classified as organic compounds and are considered inorganic. No consensus exists among chemists on precisely which carbon-containing compounds are excluded, making the definition of an organic compound elusive.[1]Although organic compounds only make up a small percentage of the Earth's crust, they are of central importance because all known life is based on organic compounds. Most synthetically produced organic compounds are ultimately derived from petrochemicalsconsisting mainly of hydrocarbons.
4 0
3 years ago
Read 2 more answers
Other questions:
  • What is the input of the light-dependent reactions, labeled X?
    5·1 answer
  • What cross will result in a half dominant and half recessive phenotype offspring?
    12·1 answer
  • Population density is defined as?
    14·2 answers
  • Why is the cell membrane said to be selectively permeable
    11·1 answer
  • What happens during photosynthesis?
    14·1 answer
  • An organism has the following traits:
    9·1 answer
  • Who produced the first image in June/July 1827, in which chemicals were used on a metal play inside a camera obscure
    5·2 answers
  • What chemicals are in H20?
    5·1 answer
  • XYZeq: Spatially resolved single-cell RNA sequencing reveals expression heterogeneity in the tumor microenvironment.
    7·1 answer
  • The nurse is preparing a presentation for a group of older adults on the topic of open-angle glaucoma. which symptoms would be i
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!