What phase does it occur when spindle apparatus appears?

What will be an ideal response?


Metaphase I

Biology & Microbiology

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A neuron synthesizes and secretes substance D, which binds to a receptor on the neuron cell membrane, triggering an

influx of calcium. Substance D therefore is a ligand for a ____.

a. a receptor tyrosine kinase b. a G-protein-coupled receptor c. a hormone receptor d. a ligand-gated ion channel e. guanylyl cyclase

Biology & Microbiology

Allopatric speciation

1.occurs when two populations exist in the same place. 2.occurs when two populations become separated geographically. 3.occurs only in plants. 4.is not very common. 5.never happens in animals.

Biology & Microbiology

Which diagram, A, B, C, or D, illustrates paracrine signaling?

1.A 2.B 3.C 4.D

Biology & Microbiology

The transfer of heat from the plant to the surrounding environment is influenced by the existence of the ________ layer

Fill in the blank(s) with correct word

Biology & Microbiology