Identify the viral structure described.

Fill in the blanks: Polyhedral viruses, Helical viruses, Enveloped viruses, Complex viruses

have a capsid that has polyhedral and helical characteristics, and may have extra structures like protein tails. Bacteriophages are examples.

have an outer lipid bilayer known as a viral envelope, which is studded with proteins. Influenza and HIV are examples.

have many triangular faces. Most have 20 triangular faces and 12 corners. Polio and the papilloma virus are examples.

have long narrow capsids shaped liked cylinders. Rabies and ebola are examples.

Which of the following lines of evidence would best support your assertion that a particular plant is an angiosperm? a) it produces seeds. b) it retains its fertilized egg within its archaegonium. c) it lacks gametangia. d) it undergoes alternation of generations.

With the description of the different cell walls, membranes, and associated proteins set in the students' minds, you now need to introduce them to the idea that the cell wall can also act as a foundation to build things upon. bacterial appendages require a strong foundation that will offer the support needed to move and function in a dynamic world. for example, flagella are long, whiplike protein structures that are used by many gram-positive and gram-negative bacteria for locomotion. in order to function effectively, a flagellum must be firmly anchored to the cell wall. how will you be able to get across the idea that the peptidoglycan cell wall is strong enough to support such a mechanism? with a protein rod that passes through the cell wall and protein rings used to anchor it in the membranes, these basal bodies are the rudimentary biological motors that use atp power to spin the hook and the flagella attached to it. bacterial flagella have a biological motor that spins within the cell wall and is powered by atp. this allows the flagella to spin in a whiplike motion to propel the bacterium.

When explaining dominant and recessive traits to a younger family member, they respond, "well chances are i can probably taste ptc, since dominant traits are more common." how might you address this misconception?