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
Evgen [1.6K]
3 years ago
13

At one time, Chondrichthyes were thought to have split off from other vertebrates before the evolution of bone. Now we have conc

luded that the Chondrichthyes split off after the evolution of bone had started. This change demonstrate
Biology
1 answer:
Goshia [24]3 years ago
8 0

Answer:

Chondrichthyes Class of vertebrate animals characterized by a cartilaginous endoskeleton, a skin covered by placoid scales, the structure of their fin rays, and the absence of a bony operculum, lungs, and swim bladder. It includes the subclasses Elasmobranchii (sharks, rays) and Holocephali (ghostfish).

Explanation:

You might be interested in
An image is shown here where a strand of mRNA is modified by spliceosome activity after it is transcribed. Which statement accur
vazorg [7]

Answer: The answer is B,C,D

Explanation: Because it’s right ;)

8 0
3 years ago
Regulation of internal environment​
Svetlanka [38]

Answer:

The regulation of an internal environment is called homeostasis.

Explanation:

Homeostasis is when you can maintain a stable inner environment.

8 0
2 years ago
Read 2 more answers
Meiosis produces _____ daughter cells.<br><br> 1<br> 2<br> 3<br> 4
bulgar [2K]
4 daughter cells

~~~owowowowowowowow~~~~
5 0
3 years ago
Read 2 more answers
Which of the following is/are common to chemiosmosis and the light-dependent reactions of photosynthesis? electron transport onl
blondinia [14]

Answer:

Both electron transport and a proton gradient

Explanation:

The process of oxidative phosphorylation in mitochondria and electron transport chain in photosynthesis undergo chemiosmosis to produce ATP molecules.

Chemiosmosis is a process where the energy utilized by the movement of proton and electrons produces ATP molecules.

Both the processes involve the movement of electrons through electron carriers where the reduced energy is utilized to drive the flow of protons through the plasma membrane. This creates a proton gradient across the plasma membrane which rotates the ATP synthase and converts the ADP molecules into ATP molecules.

Thus, the selected option is correct.

3 0
3 years ago
An individual colony visible on an agar plate is composed of:________.
Fudgin [204]

Answer:

I believe the answer is a single bacteria cell.

6 0
2 years ago
Other questions:
  • Why does a human red blood cell lyse when placed in a hypotonic solution while a plant cell does not?
    11·1 answer
  • Which is not likely to be studied by a biologist?
    5·1 answer
  • Polygenic means that most traits are controlled by ________.
    6·1 answer
  • Who was the first person to develop the ideas of listing elements according to their mass?
    7·1 answer
  • Using the letters A,T,C and G for the bases record the order of each nitrogen base i figure 8-4​
    14·1 answer
  • How is nitrogen fixation related to nitrification?
    15·1 answer
  • One of the reasons why statins are effective in reducing the risk of cardiovascular disease is ______.
    5·2 answers
  • I really need help ASAP please<br> Just tell me as many as you know<br> Thanks in advance!!!
    10·1 answer
  • Which class of mollusks contain octopi and squids?<br> Anthozoa<br> Gastropoda<br> Cephalopoda
    15·1 answer
  • What is inside your capillaries that carries oxygen to your heart?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!