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adoni [48]
3 years ago
9

A distinguishing trait that identifies an embryonic stem cell

Biology
1 answer:
SOVA2 [1]3 years ago
6 0

Answer:

Explanation:

they are capable of dividing and renewing themselves for long periods; they are unspecialized; and they can give rise to specialized cell types.  es cells are pluripotent, that is, they are able to differentiate into all derivatives of the three primary germ layers: ectoderm, endoderm, and mesoderm.

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The bulk of the energy required by the eukaryotic cell is generated by the mitochondria. the mitochondrion consists of cristae t
Sveta_85 [38]
<span>are elaborate folds on the inner membrane which hold the enzymes and electron carriers of aerobic respiration.</span>
5 0
3 years ago
Rigor mortis occurs because ________.
Kamila [148]

Answer:

No ATP is available to release attached actin and myosin molecules.

Explanation:

Two to six hours later after death, all skeletal muscles of the body become rigid and stiff. This situation is defined as Rigor mortis. It occurs from the lack of ATP along with the production of lactic acid. When breathing stopped permanently in the body, oxygen level also reduced; that’s why body muscles cannot go for any aerobic respiration to produce any ATP. 

As we know already, during every muscle construction, ATP needs to break the cross-bridge between Myosin and Actin. So if there is no ATP produced in the body, separation of Myosin molecules from Actin molecules cannot happen anymore. This situation leads for rigor mortis.

6 0
3 years ago
The testes
Ostrovityanka [42]

Explanation:

temperature is expelled out from the body in form of sweat

3 0
3 years ago
Which type of protein will fight disease?
Law Incorporation [45]

Answer:

Antibodies help you immune system.

3 0
3 years ago
What is least likely to support the ednosymbiotic theroy
Troyanec [42]

Answer:

Mitochondria and chloroplasts are much larger than prokaryotic cells.

Explanation:

According to the Endosymbiotic theory, all the components of eukaryotic cells were once individual prokaryotic cells which were able to function on their own.

The mitochondria was independent enough to perform aerobic respiration and produce energy and the chloroplasts were able to independently convert the energy from the Sun to the chemical energy through the process of photosynthesis.

Later, these cells were engulfed by a single cell and these prokaryotes combined to form a eukaryote that was capable of performing all the functions that the independent cells could.

So, the mitochondria and chloroplasts were able to reproduce on their own, had their own ribosomes and had DNA resembling that of bacteria as they were prokaryotic in nature.

However, mitochondria and chloroplasts could not be larger than the prokaryotic cells to support the endosymbiotic theory.

This is because in order to establish a relationship between the bacteria and the mitochondria and chloroplasts, and for these organelles to have developed from bacteria as their ancestors, they must have sizes comparable to bacteria and other prokaryotes.

At the same time, size in itself is not enough evidence to support origin of these organelles from the bacteria.

8 0
3 years ago
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