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WorksheetsI LEARN Review
Total questions: 28
Worksheet time: 14mins
Four categories of complex, highly organized molecular substances are needed for nearly all of the processes that take place in organisms. Which of the following correctly identifies these four categories of substances?
lipids, proteins, water, nucleic acids
carbohydrates, lipids, proteins, nucleic acids
lipids, proteins, enzymes, nucleic acids
carbohydrates, enzymes, nucleotides, amino acids
Which of the following is NOT true about enzymes?
Enzymes are proteins.
Enzymes decrease the activation energy of chemical reactions.
Enzymes work well at any temperature.
The shape & function of an enzyme can be affected by temperature, pH, and salinity.
Which of the following correctly matches the macromolecule with its function?
Proteins: build parts of a cell and & speed up chemical reactions
Carbohydrate: long term energy storage
Nucleic Acids: short term energy storage
Lipids: structure & support & genetic information
What is it called when molecules move across the cell membrane from an area of high concentration to an area of low concentration?
Diffusion
Active Transport
Osmosis
Facilitated Diffusion
hat is it called when molecules move across the cell membrane from an area of high concentration to an area of low concentration through a carrier protein?
Facilitated Diffusion
Active transport
Osmosis
Diffusion
This cell organelle helps organisms maintain homeostasis by controlling what substances may enter or leave cells.
Cell membrane
Cytoplasm
Mitochondria
Nucleus
What is the correct hierarchy of cells?
tissues-cells-organ systems-organs-organisms
organs-tissues-cells-organ systems-organisms
cell-organisms-tissues-organs-organ systems
cells-tissues-organs-organ systems-organisms
Which of the following organelles is NOT involved in protein synthesis?
Nucleus
Rough ER
Ribosome
Lysosome
This process releases chemical energy from sugars and other carbon-based molecules to make ATP when oxygen is present.
photosynthesis
cellular respiration
light dependent reaction
light independent reaction
In the energy pyramid , which organism has the least amount of energy available?
Producers
Primary consumers
secondary consumers
tertiary consumers
The largest number of individuals that an environment can support long term is...
producers
carrying capacity
emmigration
population density
Biodiversity, aka biological diversity, usually refers to
the same species in a general location
the number of animal species in a given area
the number of different species in a given area
the number of plant species in a given ar
What does a food web represent?
All connections of energy flow throughout all organisms in a ecosystem.
A single pathway or energy flow between organisms.
The specific ways that mutualism is carried out.
How carnivores get their food.
Which statement is describing the process of protein synthesis?
DNA is copied into mRNA which is translated into protein
DNA is copied into lysosome
DNA is copied into DNA
In what phase of mitosis do chromosomes line up at the center of the cell?
metaphase
anaphase
telophase
interphase
Which process results in 4 haploid cells being produced?
mitosis
meiosis
cellular transport
diffusion
A heterozygous long-tusked elephant is crossed with a homozygous recessive short-tusked elephant. What is the probability of the offspring having short tusks?
25%
50%
75%
0%
The more differences there are between the DNA sequences of the two species, the more time has elapsed since the two species shared a common ancestor.
true
false
A population of cockroaches was sprayed with an insecticide. Some cockroaches survived and produced a population of cockroaches that was resistant to this spray. What can BEST be inferred from this example?
species will adapt no matter what the environment
Individuals with favorable variations survive and reproduce
environment has no effect on the survival of an organism
Insecticides cause mutations that are passed on to the next generation
What type of symbiosis? Skunks often live in burrows that have been dug and abandoned by woodchucks.
mutualism
commensalism
parasitism
predation
Scientists look at evidence to determine possible evolutionary relationships and mechanisms. Which of the following provides strong evidence for evolution?
forensic biology
works of philosophy
phylogenetic trees aka. cladograms
amino acid sequences
What is the correct equation for photosynthesis?
C6H12O6 + 6O2 --> 6CO2 + 6H2O
6CO2 + 6O2 --> 6H2O + C6H12O6
6CO2 + 6O2 --> C6H12O6 + 6H2O
6CO2 + 6H2O --> 6O2 + C6H12O6
What do the light reactions produce?
ATP, NADPH, O2
NADP+, ADP + P, O2
H2O, O2, Glucose
NADPH, H2O, ATP
Where do the light reactions take place inside a chloroplast?
mitochondria
thylakoid membranes
stroma
cytoplasm
In cellular respiration, the splitting of the glucose molecule is called?
glycolysis
photosynthesis
fermentation
synthesis
The products of fermentation include _______ and ________
oxygen and glucose
sugar and carbon dioxide
lactic acid and ethanol
With what 3 letters do enzymes typically end?
-ase
-ese
-ate
-ame
An enzyme connects with a substrate at the __________
active site
activation energy
allosteric site
catalyst
