WorksheetsBIO 1010 midterm
Total questions: 25
Worksheet time: 13mins
Which elements make up most of living matter?
Na, Cl, K, Fe
CHNOPS
H₂O and CO₂
He and Ne
The atomic number of an element equals the number of:
Neutrons
Electrons and neutrons combined
Protons
Valence electrons
When two atoms share electrons, what type of bond forms?
Ionic
Covalent
Hydrogen
Metallic
Water’s ability to stick to itself is called:
Cohesion
Adhesion
Evaporation
Solvation
A solution with a pH of 3 is:
Neutral
Acidic
Basic
Buffered
Organic molecules always contain:
Carbon and hydrogen
Oxygen and nitrogen
Carbon and phosphorus
Hydrogen and oxygen
Which reaction builds polymers from monomers?
Hydrolysis
Oxidation
Dehydration synthesis
Condensation breakdown
The main function of carbohydrates is:
Long-term energy storage
Enzyme activity
Short-term energy and structure
Hormone production
Which lipid forms the main part of cell membranes?
Steroid
Triglyceride
Phospholipid
Waxes
Proteins are made of:
Monosaccharides
Amino acids
Fatty acids
Nucleotides
The cell theory states all of the following except:
All organisms are made of cells
Cells come from preexisting cells
Cells are the smallest unit of life
All cells contain a nucleus
Prokaryotic cells lack:
DNA
Cytoplasm
A nucleus
Ribosomes
Which organelle produces ATP?
Nucleus
Mitochondria
Golgi apparatus
Lysosome
The rough endoplasmic reticulum is involved in:
Lipid synthesis
Protein synthesis
DNA replication
Digestion
The cytoskeleton helps with:
Genetic storage
Energy transfer
Structure and movement
Protein folding
Who discovered that DNA is the genetic material?
Watson and Crick
Griffith
Avery
Hershey and Chase
Chargaff’s rules state that:
A = G and T = C
A = T and G = C
A = C and G = T
A + G = C + T
The sugar-phosphate backbone is part of which molecule?
Lipid
Protein
DNA
Carbohydrate
The base pairing in DNA allows it to:
Catalyze reactions
Be replicated accurately
Act as a membrane
Carry oxygen
Variation among individuals is due to:
Different base sequences in DNA
Different amounts of ATP
Different number of chromosomes
Different isotopes in cells
During which phase is DNA replicated?
G1
S phase
G2
Mitosis
The main purpose of mitosis is:
Sexual reproduction
Energy production
Growth and repair
Protein synthesis
In which mitotic stage do chromosomes line up in the middle?
Prophase
Metaphase
Anaphase
Telophase
Cytokinesis differs in plants and animals because:
Plants form a cell plate; animals form a cleavage furrow
Animals form a cell plate; plants form a cleavage furrow
Only animals undergo cytokinesis
Only plants undergo cytokinesis
Programmed cell death is called:
Binary fission
Cytokinesis
Apoptosis
Mutation
