Answer:
The basement membrane or basal lamina on which the epithelium form, made by extracellular matrix.
Explanation:
The basement membrane is the layer underlies all epithelia that is made up extracellular matrix secreted by the epithelium cells that provide structural support to the structure of epithelia.
It forms the barrier between epithelial tissues therefore once a epithelial cancer penetrate this basement membrane it will spread to all underlying tissues.
Thus, the correct answer is - The basement membrane or basal lamina on which the epithelium form, made by extracellular matrix.
The basement membrane is form of extracellular matrix that underlies all epithelia. It provides structural support to epithelia and forms a mechanical connection between epithelia and underlying connective tissue.
The basement membrane, or basal lamina, is a sheet of proteins and other substances to which epithelial cells adhere and that forms a barrier between tissues.
Epithelial cancers may have the ability to penetrate through the basement membrane and spread to underlying tissues.
Flowering plants reproduce by fertilization even if they are immotile by having their pollen be attached to the wings or bodies of other animals that touch them. This process is called animal pollination in which animals help to switch the genetics between different plants.
Answer:
b. Because they have a low affinity for the H+
Explanation:
All electrons that enter the transport chain come from NADH and FADH2 molecules that are produced in earlier phases of cellular respiration: glycolysis, pyruvate oxidation and the citric acid cycle.
NADH is very good at donating electrons in redox reactions (that is, its electrons are at a high energy level), so you can transfer your electrons directly to complex I and transform it back into NAD +. The movement of electrons through complex I in a series of redox reactions releases energy, which the complex uses to pump protons from the matrix into the intermembrane space.
FADH2 is not as good for donating electrons as NADH (that is, its electrons are at a lower energy level), so it cannot transfer its electrons to complex I. Instead, it introduces electrons to the transport chain through complex II, which does not pump protons through the membrane.
Sunlight
Explanation:the sun is the major source of energy for organisms and the ecosystem which they are apart of .
Explanation:
Similar rock types can be used as an evidence for continental drift because rocks forms under different geologic conditions.
Most natural depression on the earth surface are filled with thick sedimentary sequences that have been subjected to lithification.
In some terrain, magmatic activities are rife with prevailing tectonic settings controlling how they cool and solidify.
Also, some terrains have experience prolong metamorphic change and this dives spurious metamorphic transformation of minerals.
- A terrain will have a rock type that typifies it.
- If the two terrains become separated, it is possible to correlates the rock sequences in them.
- For sedimentary rocks, a geologic column and stratigraphy can be useful on correlating them.
- In metamorphic rocks. different facies have typical index minerals in them that can be used to match them.
- Dating some minerals in igneous rocks and even establishing sequences have proven useful in explaining continental drift between terrains
Learn more:
Continental drift brainly.com/question/5002949
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