Answer: B
Explanation: The DNA in the nucleus can be transcribed in mRNA, which can then leave the nucleus and be translated into proteins, which make up physical traits and characteristics.
Answer:
a. Uninucleate, nonstriated
Explanation:
Smooth muscle tissue is composed of smooth muscle cells that are spindle-shaped with a single nucleus. Smooth muscles line the walls of hollow organs such as urinary bladder, uterus, stomach, intestines but also arteries and veins and the tracts of the respiratory, and reproductive systems. Smooth muscles are under involuntary control, meaning that their contraction is unconscious.
Geologists have divided the earth history into time units that are largely based on the earth's biotic composition. The modern geological time scale includes both relative and absolute age dating and represents the most up-to-date assessment of the earth's history.
In the modern geological time scale, the eras in earth's history when the planet was populated with advanced life forms are referred to as the Paleozoic (meaning ancient life), the Mesozoic (meaning middle life), and the Cenozoic (meaning recent life).
Astrocytes perform the function of all of the given options i.e., induce the formation of the blood-brain barrier, physically support neurons, are important in the repair of brain injuries and in neural formation, take up excess K from the brain ECF.
- Both invertebrates and vertebrates have Astrocytes, a star-shaped cell kind of neuroglia, in their nervous systems.
- Astrocytes can be separated into protoplasmic and fibrous kinds. In the central nervous system's white matter, myelinated nerve fibers are frequently surrounded by fibrous astrocytes.
- Numerous cytoplasmic processes on astrocytes end on axons, neuronal cell bodies, blood vessels, and synaptic terminals.
b) The development of the blood-brain barrier is aided by the Astrocytes
c) Astrocytes support neurons physically and metabolically.
d) Astrocytes help in transfer of blood-borne materials to the neuron, and injury response of the brain and repair of brain injuries.
e) They also help with detoxification, migratory guidance, energy metabolism regulation and removal of excess K from brain ECF.
learn more about astrocytes here: brainly.com/question/6966928
#SPJ4