Which of the following is an observation that could be made about the mammoth?
The mammoth was related to the elephant
The mammoth’s tusks were curved and pointed
The mammoth’s tusks were used for protection
The mammoth was a slow moving animal
The process by which organisms keep their internal conditions constant is called...
evolution
metabolism
phoytosynthesis
homeostasis
response to stimuli
Which of the following characteristics of life best explains why birds fly south for the winter?
Living things respond to their environment
Living things maintain internal balance
Living things are made of units called cells
Living things pass DNA from parent to offspring
Which of the following shows the levels of cellular organization from least complex to most complex?
a. tissue → cell → organ
b. organ → cell → tissue
c. organ → tissue → cell
d. cell → tissue → organ
What do all eukaryotic and prokaryotic organisms have in common?
a. A nucleus
b. Membrane bound organelles
c. They are multicellular organisms
d. Ribosomes and a plasma membrane
Choose the answer that best describes this cell.
a. This is a prokaryotic cell because it has a nucleus
b. This is a plant cell because it has a cell wall and large vacuole
c. This is eukaryotic cell because it lacks a nucleolus
d. This is an animal cell because it has ribosomes
Adrian believes if he increases the protein in his diet he will gain muscle mass. What is Adrian’s dependent variable?
a. The amount of protein in his diet
b. The amount of bread in his diet
c. The amount of muscle mass he gains
d. The amount he works out
Analyze the experimental design setup. Determine the independent variable.
a. the plant height
b. the amount of light
c. the amount of fertilizer
d. the type of plant
Water sticks to other water molecules. This can be explained by the property of ...
cohesion
adhesion
high specific heat
change in density
Water is a polar molecule because
a. it contains two hydrogen atoms for each oxygen atom.
b. both ends carry a positive charge.
c. each end of the molecule has a different charge.
d. both ends carry a negative charge.
Water is separated into dipoles. Which end carries a negative charge?
the oxygen atom
the hydrogen atoms
Why is carbon uniquely suited to build organic macromolecules
a. Carbon can form four covalent bonds to form complex compounds
b. Carbon can only bond with other carbon atoms
c. Carbon is able to form 8 covalent bonds
d. Carbon is not suited to build organic macromolecules
Which of the following are the most common elements in organic compounds.
carbon
helium
copper
oxygen
potassium
hydrogen
Through which process do large polymers gain the parts of water in order to split into a monomer and smaller polymer?
photosynthesis
cellular respiration
dehydration synthesis
hydrolysis
Why do cells need carbohydrates?
a. Carbs provide cells with energy
b. Carbs provide cells with protein
c. Carbs provide cells with potassium
d. None of the above
Which of the following describes the structure of a carbohydrate?
a. A long hydrocarbon chain connected to a carboxyl group
b. Carbon rings made for hydrogen, carbon, and oxygen in 1:2:1 ratio
c. A central carbon with 3 groups and one hydrogen attached
d. A double helix made from repeating nucleotides
Which of the following describes the role of a phospholipid?
a. Phospholipids store short term energy for the cell
b. Phospholipids catalyze chemical reactions
c. Phospholipids form the cell’s membrane
d. Phospholipids carry hereditary information
Which of the following diagram represents a molecule that stores hereditary information?
Isobel’s doctor told her she is feeling weak because her diet is too low in protein. What advice would you give Isobel in order to improve her health?
Add more oil and butter to your diet.
Add more bread, rice, and vegetables to your diet.
Add more fruit and pasta to your diet.
Add more beans, nuts, and meat to your diet.
What is the monomer of a protein?
monosaccharide
fatty acid
nucleotide
amino acid
What is the monomer of a lipid?
nucleic acid
What is the polymer of monosaccharide?
polysaccharide
lipid
polypeptide chain
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