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]
3 years ago
12

Diatoms have cell walls composed of _____.

Biology
2 answers:
Stels [109]3 years ago
6 0
Diatoms have cell walls composed of silicon dioxide.

A. silicon dioxide.
Gnesinka [82]3 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
A drug made from chemistry is called a<br><br> PLZ HELP QUICK 100 POINTS
mrs_skeptik [129]

Answer:

Tylenol XDDDD

Explanation:

it's made of drugs

8 0
3 years ago
Read 2 more answers
Name THREE ways Earth’s oceans affect your life.
nikdorinn [45]

Answer:

The ocean covers 70% of the global surface. Climate is affected by both the biological and physical processes of the oceans

Explanation:

Regulates the earths climate

5 0
3 years ago
Read 2 more answers
Complete the Punnett square below by showing the genetic makeup of the parent plats of the cross shown.Be sure to show both gene
aksik [14]

Answer:

The correct answer is -

Parent 1: RW, Parent 2: RR

Explanation:

In the given punnet square there are four offspring and it is a monohybrid cross between parent 1 and parent 2. The four offspring produced in this cross have RR, RR, RW, and RW alleles. By the genotype of the offsprings, it is clear that there are 50 percent pure or true-bred and 50 percent are heterozygous.

Each parent contribute two alleles and these alleles are independently assort in the zygote to form offspring so there must be R, R, R and W allele present in the parent

Parent 2  →       R     R

Parent 1 ↓     R  RR   RR  (one allele (R) come from each parent in zygote)

                    W  RW  RW (one allele  (R and W) come from each parent)

8 0
3 years ago
For the catabolite repression control system, what would be the effect on the phenotype of the lac operon of a regulator protein
GrogVix [38]
The answer is either a of c
4 0
3 years ago
What do birth rate, death rate, immigration, and emigration determine about a population?
zalisa [80]
How it increases and decreases
8 0
4 years ago
Read 2 more answers
Other questions:
  • 11. Which of the following is NOT thought of as surface water in the hydrosphere?
    15·2 answers
  • Wich types of organism developed first due to the early environmental conditions on earth?
    14·1 answer
  • Please Help. First to answer will be crowned Brainlyest
    11·1 answer
  • Advances in medical technology have had no impact on the environment.
    7·1 answer
  • the average hair skin and nails have a pH level of five generally falling between 4.5 and 6 true or false
    14·1 answer
  • Please need help with this biology question (photo)
    11·1 answer
  • State four(4) benefits of the earth's rotation to the environment.​
    15·1 answer
  • You have recently identified a new toxin. It is produced by a gram-negative bacterium. It is composed mostly of protein, has hig
    8·1 answer
  • 100 PTSSS PLEASEE HELPPPPPPP I NEED THIS PLSS IVE BEEN TRYING FOR 30 MINNSS
    13·2 answers
  • How would you explain Darwin's mechanism for evolution called "natural selection"?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!