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
lilavasa [31]
2 years ago
14

What is a sharks' skin made of?

Biology
1 answer:
FinnZ [79.3K]2 years ago
3 0
Shark skin is made of a matrix of tiny, hard, tooth-like structures called dermal denticles or placoid scales. These structures are shaped like curved, grooved teeth and make the skin a very tough armor with a texture like sandpaper.
You might be interested in
What organelle would you not find in a plant cell? Chloroplasts,centrioles,central vacuole,or cell wall?
Sedbober [7]

Answer:

Centrioles

Explanation:

If we look at ths other options Chloroplast and Cell Wall are both needed for a plant to survive and function. So we automatically know that it's going to be there so those aren't an option. We know that both animal and plant cells have a vacuole but plant cells have larger ones so we know that's not an answer. Leaving us with the only other possible answer left, Centrioles.

5 0
3 years ago
Read 2 more answers
evidence of the endosymbiosis theory was found in the : nucleus and cytoplasms, mitochondria and endoplasmic reticulum, mitochon
alina1380 [7]

Answer:

Mitochondria and chloroplasts

Explanation:

These two organelles support the theory in that both have 70S ribosomes, the presence of a circular DNA within, and similar size. They can undergo division within the eukaryotic cyptoplasm. Both of these organelles are surrounded by a double membrane, which in the case of chloroplast is known to originate from ancient bacteria that lost its peptidoglycan component. Mitochondria and chloroplast both evolved from ancient free living bacteria that entered into larger cells, which in the case of mitochondria is known to be archaea and in the case of chloroplast is a eukaryotic cell. With this, these cells became dependent on it in a manner that it could not exist without it.

<h3>Hope this helps!</h3>
7 0
3 years ago
Patients with indwelling catheters are susceptible to infections because A) Injected solutions are contaminated. B) Their immune
Citrus2011 [14]

(D) Bio films develop on catheters.

Hope this helped.

6 0
3 years ago
Read 2 more answers
What is the electromagnetic spectrum? Where does it come from?
Ganezh [65]

Answer:

The electromagnetic (EM) spectrum is the range of all types of EM radiation. Radiation is energy that travels and spreads out as it goes.the visible light that comes from a lamp in your house and the radio waves that come from a radio station are two types of electromagnetic radiation.

4 0
3 years ago
Bacteria and fungi feed on a dead log.These organisms act as decomposers by breaking
ASHA 777 [7]

Answer:B habitat

Explanation:

7 0
3 years ago
Other questions:
  • What are molecules that are both attracted to water and repel water called?
    13·2 answers
  • What does the range of a population tell you that density does not ?
    6·1 answer
  • Which statement is true fir some photosynthesizing animals?
    15·2 answers
  • Which color of light is absorbed the most by chlorophyll a? what percentage is absorbed? what percentage is reflected??
    5·1 answer
  • If you were studying the effects of climate change on the geographic ranges of species living in the mountains and your climate
    6·1 answer
  • What animal did a snake come from
    9·2 answers
  • Zac drew a prokaryotic cell for his biology assignment. Study the image closely. What is incorrect in Zac’s drawing of a prokary
    8·2 answers
  • Because the United States imports about 4 billion barrels of crude every year, at best, the Arctic National Wildlife Refuge coul
    8·2 answers
  • -. In which phylum does a coelom first appear?
    12·1 answer
  • Differentiate between population density and<br> population distribution<br> DUNE
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!