List and describe the structures of viruses. What will be an ideal response?


1. Nucleic acid core which is single-stranded or double-stranded DNA or RNA never both.
2. Capsid protective protein coat.
3. Envelopes surround a capsid of some viruses and are composed of phospholipids and proteins of
hosts plasma membrane as well as distinctive viral proteins

Biology & Microbiology

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Lichens are adversely affected by  

A.  humidity. B.  sunlight. C.  pollution. D.  sexual reproduction of the fungal partner. E.  asexual reproduction of the photosynthetic partner.

Biology & Microbiology

To form the blood brain barrier, capillary epithelial cells are sealed together by ____

a. fibronectin b. collagen c. gray matter d. myelin e. tight junctions

Biology & Microbiology

Animals learn to repeat certain behaviors based on certain factors. What are these?

What will be an ideal response?

Biology & Microbiology

Two species of pines, Pinus radiata and Pinus muricota, live in the same regions of California and are capable of forming hybrids under laboratory conditions

However, they do not interbreed because one releases pollen in February and the other in April. What genetic isolating mechanism is involved? A) Gametic B) Temporal C) Hybrid inviability D) Ecological E) Geographic

Biology & Microbiology