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Law Incorporation [45]
3 years ago
14

How does embryonic development and cell differentiation in

Biology
1 answer:
Ira Lisetskai [31]3 years ago
7 0
Mammals do not have a rigid cell differentiation pattern and cell count like the organism C elegans. Embryonic differentiation is the process of development during which embryonic cells specialize and diverse tissue structures arise.The differentiation of cells during embryogenesis is the key to cell, tissue, organ and organism identity. Once an egg is fertilized by a sperm, a zygote is formed. The zygote divides into multiple cells in a process known as cleavage, triggering the beginning of embryonic differentiation. 
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Cabbages have 18 chromosomes. How many chromosomes do each of the daughter cell produced by mitosis have?
AVprozaik [17]
This is because daughter cells are identical to the original cell.
Although during the process of mitosis the number of chromosomes changes, the final number of chromosomes in each daughter cell is always the same number as were in the original cell.
7 0
3 years ago
Why are vestigial structures considered critical evidence of evolution?
Norma-Jean [14]
Vestigial structures are considered evidence since scientists believe they are structures that were once used by a species ancestors but are no longer needed. They do not impair the organisms in any way, so there is no need for evolution to get rid of them. Vestigial structures are anatomical features that no longer seems to have a function or purpose in the current form of an organism of the given species. Examples are wisdom teeth, the muscles of the ear, the appendix, the tail bone among others in human. 
7 0
3 years ago
The tendency for an object in motion is called orbital speed
givi [52]
<span>The tendency for an object in motion to remain in motion is called inertia of motion. Meaning the answer is false.</span>
8 0
3 years ago
Read 2 more answers
According to the food chain below, which of these organisms most likely contains the least concentration of toxins (DDT) ?
agasfer [191]

Answer:

Hawk

Explanation:

Dichlorodiphenyltrichloroethan which is also known as DDT is a colorless, tasteless and almost odorless crystalline chemical compound. It was originally developed as an insecticide and it causes harm to wildlife animals.

When the chemical are sprayed or gets in contact with the soil it is the terrestrial organisms such as plants and primary consumers who gets affected the most due to direct contact with the chemical.

Animals such as hawks who are arboreal and tertiary consumers from the list of options don’t get affected directly from the source of the DDT contamination which makes them least affected.

5 0
2 years ago
Which of the following is NOT a part of an ATP molecule? Select one: a. adenine b. ribose c. chlorophyll d. phosphate
Gnesinka [82]

Answer:

C (Chlorophyll)

Explanation:

Adenosine triphosphate (ATP) is an energy carrying molecule in all living cells. It is the usable form of energy by cells. Organisms are able to carry out cellular functions using the energy carried by ATP molecules. ATP like other molecules is made up of components that make up its chemical structure.

ATP is composed of three structural components; A five-carbon sugar called RIBOSE at the core of its structure, attached to a nitrogenous base called Adenine and phosphate group (three in ATP). The energy in ATP is released when it loses its phosphate component.

Chlorophyll is a pigment found in the Chloroplast of plant cells. It is another molecule that is made up of its own components e.g nitrogen, magnesium etc.

4 0
3 years ago
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