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Dmitry_Shevchenko [17]
3 years ago
10

What technique is used to separate the different cell parts? Select one: a. all of the above b. microscopy c. cell fractionation

d. cell culture
Biology
1 answer:
enot [183]3 years ago
8 0

Answer:

The correct answer is c. cell fractionation

Explanation:

Cell fractionation is the technique which allows different cells part to be separated from each other on the basis of their density gradient by using a centrifuge.

In cell fractionation, first the cell wall and membrane of cells are broken by chemical, physical or mechanical method. Then the cell component can be separated by centrifuging them at different rpm.  

Components that have higher density can be found in the bottom and the light density can be found on top of the tube. Therefore the correct answer is c. cell fractionation.

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Bone resorption is a process whereby bone matrix is ____________ by substances released by ____________ . The lysosomes inside o
Nikitich [7]

Answer:

a. destroyed

b. osteoclasts

c. proteolytic enzymes

d. hydrochloric acid

e. blood

f. low

Explanation:

Resorption is the loss of substance from any mineralized tissue, mediated by cellular and humoral systems of their own. The four mineralized tissues of our economy, bone, cement, dentin (mineralized fraction of the dentino-pulp functional complex) and enamel, offer different degrees of resistance to resorption. The bone has the greatest lability and the enamel the least. The fact that the bone tissue is the least resistant to resorption is used to move and reposition teeth by controlled forces (orthodontics); and the fact that the enamel is the most resistant has led to think that it does not suffer from resorption.

Osteoclasts They are the spring cells par excellence; they belong to the lineage of the monocitomacrophages. They are large, multinucleated mobile cells, with a clear area and a rough brush border that live for about two weeks and disappear by apoptosis (cell death programmed by fragmentation in membrane particles that allows their phagocytosis without inflammation). They are responsible for the destruction of the organic and inorganic parts of the mineralized bone fraction. They are active both in the processes of the physiological renewal of the bone and in those of its pathological loss.

8 0
3 years ago
4. Which of the following is NOT part of the axial skeleton?
mel-nik [20]

Answer: b pelvic

Explanation:The pelvic is lower down the skeleton

3 0
3 years ago
What is the Difference between DNA & RNA?
Travka [436]
DNA is deoxyribonucleic acid while RNA is ribonucleic acid !

DNA has base pair of adenine guanine thymine and cytosine.....while RNA has adenine guanine cytosine and uracil !

DNA is always double helix while RNA is mainly single helix !

DNA contains genetic info for 99℅ of organism while RNA is being catalytic and unstable than DNA is only present as genetic information holder in 1℅ !

DNA does not involve in protein synthesis directly but RNA has to !

for more difference, comment !
8 0
3 years ago
marrisa and seaan are in the process of adopting a baby. One of the documents the adoptionsgency provides is a full medical hist
choli [55]

Answer:

The father's medical history is a record of the diseases and health conditions of the Father. The Father and child are family members who share genes.

Explanations:

They may also have some health conditions in common.

8 0
3 years ago
Read 2 more answers
How can a refute hypothesis lead to a new investigation
IrinaVladis [17]

A refute hypothesis is a hypothesis that has been refused, not accepted.

When a hypothesis is refused, the scientists that proposed it will try to correct it or to create a similar more applicable one, and that is how new investigations could occur in this case.


Hope it helped,


BioTeacher101

6 0
3 years ago
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