Bio Exam Practice

Living Things & Science

100

Which is not a characteristic of all living things?

What is multi-cellular 

200

True or false: A scientific theory is merely a tentative explanation subject to testing and modification.

What is False (Remember that hypotheses are tentative explanations. A theory is well established and supported. Does that mean that a theory cannot be rejected? It can, but it would require rejecting all of the hypotheses that support it first. Good science is always falsifiable!) 

300

What structure is absent from every prokaryotic cell?

Prokaryotes are classified in the domain(s)

What is a nucleus

what is Archaea and Bacteria 

400

 Pictured is the general equation

for photosynthesis. Which are the

reactants of this reaction?

What is Carbon dioxide and water 

500

1). The graph at right shows that as a

sphere’s volume increases, its surface-

area-to-volume ratio________? (Graph on docs)

2). Which of these would have the largest

surface area: volume ratio?

1). What is Decreases 

2). What is A spherical living cell 

Atoms & Chemistry

100

1). Use the figure at right. How many protons does

this Boron atom have?

2). Use the figure at right. How many electrons do

Boron atoms have?

GRAPH ON DOCS.......

1). What is 5 protons 

2). What is 5 electrons

200

1). How many more electrons does this carbon atom need to fill its outermost shell?

2). An atom has 11 protons, 13 neutrons, and 11 electrons. What is its atomic mass?

1). What is 4 more electrons are needed 

2). What is 11 protons + 13 neutrons = mass number of 24

300

1). A sodium atom, Na, becomes a sodium ion, Na+ , when it .

2). Ionizing radiation can cause tissue damage by  removing from atoms and molecules.

1). What is loses an electron

2). What is electrons

400

Covalent bonds

What is are stronger than hydrogen bonds and involve atoms sharing electrons

500

When an egg white is boiled, its proteins unfold and lose their normal shape. When this happens, the proteins have been 

What is denatured

Water, Bonds & pH

100

When water molecules stick to something other than water, we call this

What is adhesion

200

When the atoms within a covalent bond share the electrons equally, the bond is

What is Non-polar

300

1). A solution that is 0.00001 M H + has a pH of what?

2). Suppose you measure the pH of a bucket of water and then then add lots of lemon juice to the bucket. When you measure the pH again, what will you find?

1). What is 0.00001 M H² Positive 1 x 10- 5 M H positive = pH of 5.

2). What is the pH has decreased

400

The monomers of a polymer are joined together via

What is dehydration synthesis

500

1). Cotton represents the purest form of which carbohydrate, since it contains more than 90% of it?

2). Cellulose and starch are examples of which macromolecule?

1). What is Cellulose 

2). What is Carbohydrates

Macromolecules

100

All organic molecules contain which element(s)?

What is Carbon because many organic molecules also contain hydrogen, but not all of them. Carbon is the true defining atom of an organic molecule because it makes up the ‘skeleton’ of the organic molecule.

200

1). Hemoglobin, spider silk, enzymes, and muscle are all examples of what?

2). Which of these is a polymer of amino acids?

1). What is Proteins

2). What is Proteins

300

1). Genes, which are composed of , are like recipes to make a protein

2). DNA is a type of

1). What is Proteins

2). What is nucleic acid

400

1). Which is characterized by being partially or completely hydrophobic?

2). ATP is a nucleotide, so besides being an energy molecule, it’s a monomer that could be part of

3). What is a polysaccharide found in insect exoskeletons and fungal cell walls?

1). What is Lipids

2). What is RNA

3). What is Chitin

500

1). Can a plant cell that conducts photosynthesis, from a leaf for example, have both chloroplasts and mitochondria?

2). A molecule might be able to freely cross a cell membrane if it is

1). What is Yes

2). What is Hydrophobic

Organelles and Cell

100

Which is found in ALL cells?

What is Plasma membrane and ribosomes

200

Which of these structures is a major site of protein synthesis?

What is Rough endoplasmic reticulum

300

1).  A prokaryote’s chromosome is located in its

2). According to the endosymbiotic hypothesis, were originally prokaryotes that were engulfed, but not consumed, by larger cells

1). What is nucleoid

2). What is mitochondria

400

1). When a eukaryote’s do not function normally, damaged organelles accumulate rather than being digested within a cell

2). Which of these makes the bulk of a cell’s ATP, the energy molecule?

1). What is central vacuoles

2). What is Mitochondria

500

1). Using a light microscope, you observe large cells that (1) do not have chloroplasts, (2) have cell walls, and (3) have nuclei. These cells came from

2). Which fluid filled structure supports the cells of non-woody plants?

3). A cell makes a protein that is going to be leaving the cell. Which is the path these proteins take from synthesis to secretion?

1). What is a plant

2). What is Central vacuole

3). What is Rough ER Golgi plasma membrane