bio exam 2

What is the difference between an allergy and an autoimmunity?

Allergies cause the immune system to attack something otherwise harmless while autoimmunities cause the immune system to attack our own cells.

Which of the following do ALL cells contain?

DNA, cytoplasm, plasma membrane, ribosomes

Which is a good way to test the "excess acid hypothesis"?

Examine ulcer patients of a range of ages and measure their stomach acid levels.

What are the four major macromolecules that make up organisms?

Lipids, proteins, nucleic acids, carbohydrates

Which of the following is found in all viruses?

RNA and protein shell

The term prokaryote refers to

a type of cell structure

Our bodies cannot synthesize the amino acid phenylalanine , but require it. Therefore, phenylalanine is

an essential nutrient

what kind of a response does a vaccination against a particular pathogen stimulate

autoimmune

Are plants autotrophs or heterotrophs?

autotrophs

Which of the following can antibiotics kills?

bacteria

In the presence of oxygen, we use _________ to fuel ATP production. Plants use ____________ to fuel ATP production.

cellular respiration, photosynthesis

The absence of membrane-bound organelles in a cell tells you that the cell must be __.

either from a member of of the domain bacteria or eukarya

New flu vaccines are made every year because:

flu viruses mutate

Can disease-causing protists be treated with antibiotics?

no

What type of macromolecule are DNA and RNA?

nucleic acids

Which of the following is found in eukaryotic cells but not in prokaryotic cells?

nucleus

Which of the following is NOT a characteristic found in at least some organisms in the domain Eukarya?

photosynthesis

What do you think causes ulcers?

stress

What do all members of the informal group known as protists have in common?

they are all eukaryotic

Why don't scientists consider viruses to be alive?

they aren't made up of cells