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vovangra [49]
3 years ago
6

Which of the following is marked by the appearance of organisms with hard parts?

Biology
1 answer:
My name is Ann [436]3 years ago
8 0

Answer:

a

Explanation:

bace i have done thos test

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) You treat some cells with a proteolytic enzyme that is too large to penetrate the cell membrane (Set 1). Another group of cell
Advocard [28]

Answer:

Proten W

Explanation:

SDS-PAGE gel is a method used for the separation of proteins in which proteins are separated based on their length (smaller proteins move faster through the gel, due to less resistance).

When treated with proteolytic enzymes, proteins are cut and become short fragment. This means that the fragments formed after the use of proteolytic enzymes, will move faster and thus, migrate a longer distance. Proteolytic enzymes in Set 2 cells will act only on plasma membrane proteins (because they cannot penetrate), while in Set 2 they will act on both, plasma membrane and interior proteins. Control group will have only the large fragments (not treated with enzyme).

Protein W travels the same distance on a gel of proteins from Set 1 and Set 2, but different than control group. It means that the proteolytic enzyme worked the same on Set 1 and Set 2.

3 0
3 years ago
Balancing, running, and jumping are all examples of _________ motor skills.
Margarita [4]

Balancing, running, and jumping are all examples of <em>gross</em> motor skills.

_________________________________________________

I quote from Wikipedia:

"Gross motor skills are the abilities usually acquired during childhood as part of a child's motor learning. By the time they reach two years of age, almost all children are able to stand up, walk, jump, run, walk up stairs, etc. etc."


3 0
3 years ago
¿Cuál es la novena parte 177?
marshall27 [118]

Answer:

umm well I dont know to. be honest

4 0
2 years ago
The first organisms to photosynthesize are called
Lapatulllka [165]

Answer:

cyanobacteria

Explanation:

3 0
3 years ago
An unbiased person considers all sides of an issue<br><br>true or false​
Klio2033 [76]

Answer:

True

Explanation:

They are unbiased they have to consider everything before coming to a conclusion.

4 0
3 years ago
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