A molecular clock assumes that the genes used

1 answer:

8 0

The phrase that completes the statement would be "measure of time." The molecular clock is defined as a method of determining the prehistoric time when life forms emerged using the mutation rate of molecules. Furthermore, it "measures time from random DNA mutations", according to Hedges.

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How does the cell theory demonstrate this definition of theory

Degger [83]

In simple terms, Cell Theory can be expressed as living organisms are composed and consists of cells and it arises from the surviving cells (existing cells).

Explanation:

Cell Theory:

The term "Cell Theory" has created an impact in the biology field and it is now confirmed that cell provides the basic structure to the living organisms and Robert Hooke started doing researching about the cells.

Principles of cell theory:

The three principles to the cell theory are listed here,

All organisms are made up of one or more cells.
Cells arise from other cells.
The Cell is the fundamental unit of structure and organization.

Contribution to Cell Theory:

Schwann and Schleiden are the two scientists who discovered lots of information about the cells and they have contributed lots to cell theory.
Schleiden states that every part of plants are consists of cells and he states that cells were done by the crystallization process.
Schwann states that every part of plants and animals were consists of cells.
Based on their contribution postulates of cell theory has been proposed.

Types of cells:

The cells are classified as Eukaryotes Cell and Prokaryotes Cell

Eukaryotes:

Presence of Mitochondria
Presence of Cytoskeleton
Presence of Membrane-bound Nucleus

Examples: Animals and plants

Prokaryotes:

Absence of Mitochondria
Absence of Cytoskeleton
Absence of Membrane-bound Nucleus

Examples: Bacteria

4 0

4 years ago

Which of these is a function of follicle stimulating hormone in males? Which of these is a function of follicle stimulating horm

prisoha [69]

Answer:

The correct answer of the function of the follicle stimulating hormone in male is the development of the gonads, which is the testis (A).

Explanation:

Sertoli cells, which are responsible for maintaining the maturity of sperm cells due to the production of proteins that bind the androgen is stimulated by the Follicle stimulating hormones. Also, the increase in the size of the testis, the male's gonad, is stimulated by the same Follicle stimulating hormone.

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4 years ago

Place the following layers of the wall of the respiratory tract in order from innermest to outermost.

koban [17]

Answer: Mucosa: sub mucosa : adventitia

Explanation:

Respiratory tract is a part of respiratory system that helps in the process of respiration.

The respiratory tract is lined with different layers of wall. Moving from the inside to outside of the respiratory tract the layers are mucosa; sub mucosa and the outermost wall is adventitia.

These layers helps in protecting the respiratory system from any kind of damage and kills the harmful pathogen that tries to enter the tract.

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3 years ago

Water makes up about what percentage of most organisms? A. 50% B. 70% C. 10% D. 30%

aliya0001 [1]

The answer is B: 70%

7 0

4 years ago

Read 2 more answers

What has a higher melting point than water?

Ksivusya [100]

If you mean higher boiling point than it is oil.