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WINSTONCH [101]
3 years ago
6

All living organisms have a complex chemistry. A) TRUE B) FALSE

Biology
1 answer:
Mila [183]3 years ago
3 0

Answer:

false

Explanation:

there are one celled organism very simple

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This is the strongest intercellular connection between the functioonal units of life and it is important in cardiac muscle. ____
tia_tia [17]

Answer:

The correct answer for the question: This is the strongest intercellular connection between the functional units of life and it is important in cardiac muscle:____, would be: intercalated discs.

Explanation:

Just like skeletal muscle fibers depend on T-Tubules to be able to propagate an electrical impulse between the sarcomeres that form it, so that all respond in syncronization, myocardial fibers also require to do this; otherwise the heart would simply not function. In the case of myocardium, the muscle of the heart, synchronization is vital in order for it to be able to pump blood and meet the needs of the body. Also, like skeletal muscle, these fibers count with a structure that will permit such a thing; intercalated discs. These discs are formed by the ends of myocardiocytes and extensions of plasma membrane, just like in T-Tubules and they play a vital role not just in unifying the entire muscle fiber, but also adjoining muscle fibers. They also play a vital role in action potential propagation.

6 0
3 years ago
The theory of endosymbiosis suggests that chloroplasts and mitochondria were once free-living prokaryotes, that were engulfed by
Drupady [299]

The question is incomplete. The rest of the question is : Which of these is not supported by the endosymbiosis theory concerning organelles?

A) contain DNA.

B) contain ribosomes.

C) are capable of living independently.

D) are surrounded by a double membrane.

Answer:

Option C) are capable of living independently  is not supported by the endosymbiosis theory concerning organelles

Explanation:

The endosymbiosis theory proves that chloroplasts and mitochondria were prokaryotic cells before due to many reasons. Some of which are:

  • These organelles have their own separate DNA.
  • The separate DNA present in them is capable of making their own proteins.
  • They are membrane- bound organelles.

However, these organelles can now not live separately outside of the cell. This might be because of the evolutionary changes which  occurred in these cells during the long period of time.

8 0
3 years ago
Read 2 more answers
Chromosome duplication, which happens during mitosis, occurs in the what?
damaskus [11]
The nucleus of the cell
3 0
3 years ago
The east african rift valley is an example of what kind of plate boundary?
Naddik [55]

Divergent, the plates are rifting apart and creating new landmass.

Any sort of rift will be a divergent boundary.


6 0
3 years ago
What organelles is the control center of the cell
KiRa [710]
The nucleus is the control center of the cell
6 0
4 years ago
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