Answer:
Here are the answers:
a. 4 Cell determination as an issue in the *rest is missing*
b. 4 They assumed that different ways of separating an embryo into two parts would be equivalent as far as the fate of the two parts was concerned.
c. 4 I and III only
Explanation:
The passage demonstrates the importance of two factors in the development of an embryo: cleavage planes of division of embryonic cells and cell differentiation.
Cleavage Planes:
Cleavage basically refers to the division of the zygote into a large number of cells called blastomeres. Cleavage planes are geometrical lines or orientations along which cleavage takes place. Since, all embryonic cells are the precursors of some type of body cells, the cleavage planes determine if the cells are adequate for growth and development.
Cell Differentiation:
Cell differentiation is the transition of an undifferentiated cell into a specialized one. For example, stem cells are undifferentiated cells that develop into progenitor cells that mature into a specific cell lineage. For an embryo to regenerate, the presence of adequate embryonic stem cells is crucial. Embryonic stem cells are present in abundance before the gastrulation phase of embryonic development, after which they rapidly start differentiating.
I think that it would be A translocation
Each sentence describes a different form of energy:
- The shortest wavelength of visible light is <u>violet light</u>.
- Energy that can be felt as heat but not seen is <u>infrared radiations</u>.
- Short, invisible rays that can cause eye damage is <u>ultraviolet radiations.</u>
- Visible light with the longest wavelength is <u>red light</u>.
<h3>
Define electromagnetic spectrum?</h3>
An electromagnetic spectrum is a set of frequencies and wavelengths over which an electromagnetic wave can be spread (extends).
From smallest to longest wavelength (highest to lowest frequency), the electromagnetic spectrum consists of the following types of energy:
- Gamma rays
- X-rays
- Ultraviolet radiation
- Visible light
- Infrared radiation
- Microwaves
- Radio waves
Type of energy:
Each phrase in science describes a different form of energy:
1. Violet light has the shortest wavelength of visible light.
Visible light has a wavelength of 380 to 450 nanometers.
2. Infrared radiations are energy that can be felt as heat but cannot be seen.
Infrared radiation is a form of energy that the human body perceives as heat but that cannot be seen since it is outside the visible light range.
3. Ultraviolet radiations are short, invisible rays that might cause eye injury.
Ultraviolet light, which is mostly produced by the Sun, has the potential to harm the eyes.
4. Red light is the visible light with the longest wavelength.
Red light has a wavelength of 620 to 750 nanometers.
For more information regarding wavelength, visit:
brainly.com/question/10728818
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Answer:
Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms' activities. This chemical energy is stored in carbohydrate molecules, such as sugars, which are synthesized from carbon dioxide and water – hence the name photosynthesis, "light", and sunthesis, "putting together". In most cases, oxygen is also released as a waste product. Most plants, most algae, and cyanobacteria perform photosynthesis; such organisms are called photoautotrophs. Photosynthesis is largely responsible for producing and maintaining the oxygen content of the Earth's atmosphere, and supplies most of the energy necessary for life on Earth.
Explanation:
