Intro to Bio - Proctored Exam Flashcard
What is the main energy molecule in the body?
ATP
Crossing-over involves the exchange of genetic information between:
nonsister chromatids
Which of the following occurs during the light reactions of photosynthesis?
NADPH Production
How does mitosis in plant cells differ from that in animal cells?
Animals lack a cell plant and plant cells lack centrioles
What is the correct order in which genes are expressed?
DNA -> RNA -> Proteins
What is a characteristic of cancer cells?
They result in uncontrolled growth
What is thigmotropism
Growth in response to touch
During exponential growth, the rate of growth:
Starts slowly then accelerates
Which atom contains 6 protons and electrons?
Carbon
What does a receptor protein do?
Allows a specific molecule to bind to it because of its shape
What are modifications that make organisms suited to their way of life?
Adaptations
Which of the following organelles is part of the endomembrane system?
Golgi Apparatus
Sunflowers belong to which Kingdom?
Plantae
An insect is able to walk across the surface of a pond without sinking because of the
Surface tension of the water
If you immerse a living cell in a hypertonic solution, water will
move out of the cell
What have the potential to develop and specialize into any cell type, which means they’re
Totipotent, Embryonic stem cells
Stating that an organisms is heterozygous is stating it
Genotype
The phase of cell division in which chromosomes align on the spindle equator halfway between the spindle poles is
Metaphase
In the evolutionary adaption sense, what is fitness
The reproductive success of an individual
The distinction between protostomes and deuterostomes is based on differences in their
Embryological development
Which of the following structure develops into a pollen grain?
Microspore
What is a condition required for the Hardy-Weinberg principle to be in effect?
Random mating
Which of the following is NOT an example of a service provided by beneficial bacteria? A. Food Production B. Nutrient Cycling C. Bioaccumulation D. Bioremediation
bioaccumulation
During the life cycle of a plant, gametophyte is to n as sporophyte is to
2n
In plants, what type of tissue is responsible for transporting water and nutrients
Vascular tissue
Which of the following animals has a single-loop closed circulatory system
Fish
Which structure transports sugars from leaves to the roots
Phloem
What is an example of a renewable resource?
Wind, Solar, Water, Heat
What will have a greater impact on a population as the density of that population increases?
Predation
Study the following food chain: Grass -> Rabbits -> Snakes -> Hawks.
From this food chain, you can correctly assume that each population
Supports the next trophic level
Which pollutant is responsible for the increase in skin cancer?
chlorofluorocarbons
What characteristic of a population increases with plentiful resources?
Population density
Why might introduction of an exotic species disrupt an ecosystem
They can outcompete the native species
What is NOT a domain of the 3 domain system?
Prokarya
What is the name for all the chemical processes in the cell?
Metabolism
Example of a monosaccharide?
Glucose
Which of the following molecules is a byproduct of cellular respiration
water
What structure surrounds the cytoplasm in a bacterial cell?
Plasma Membrane
What is true of the scientific method?
it is an accepted explanation for how the world works
Binomial name given to an organism is composed of
Genus, Species
Nucleic acids are composed of monomers called
Nucleotides
What occurs in the cristae of the mitochondria
Electron transport chain
What does electronegativity mean?
Affinity for electrons in a covalent bond
What chromosomes are found in pairs, one from father and mother?
Homologous
Bacteria reproduce by
Binary Fission
Autosomes are __ chromosomes
nonsex
What holds the base pairs of DNA together?
Hydrogen Bonding
What is an example of an X-linked recessive disorder?
Color Blindness
A woman who isn’t color blind but has an allele for color blindness reproduces with a man who has normal vision. What is the chance they’ll have a colorblind daughter?
0%
If a piece of DNA breaks off from a chromosome and attaches itself to a nonhomologous chromosome at another location, what type of change has occurred?
Translocation
One parent has curly hair, one parent has straight hair, their child has wavy hair. This is an example of
Incomplete Dominance
What are the proteins that DNA is wound around to form chromosomes?
Histones
2 organisms, each with the genotype TtGg, mate. The chance of producing offspring that has the dominant phenotype for height (T) and the recessive phenotype color (g) is
3/16
Which of these is happening when translocation takes place?
tRNA are bringing amino acids to the ribosomes
If a cell has 46 chromosomes, how many will it have after meiosis?
23
Both insects and roundworms exhibit _ whereas sponges, snails and leeches do not
Molting during growth
Fungi are considered to be more closely related to animals instead of plants because they
Can’t make their own food
__ isolation occurs when 2 species occupy different habitats within the same geographical range
Habitat isolation
In evolution, the study of vertebrae forelimbs is related to __ evidence
Anatomical Evidence
What happens when previous adaptations are no longer suitable for changes in the environment?
Extinction
Which of the following is an example of a group of prokaryotic organisms?
Archaea
Darwin argued that the beak size and shape of Galapagos Finch species was related to their
Food Source
The most diverse and prevalent organisms on earth are
Bacteria
Angiosperms may use any of the following to disperse pollen except
Water
Which of the following is not a form of genetic recombination in bacteria?
Binary Fission
The tail bones of humans is an example of __ structure
Vestigial
According to the theory of evolution, birds feathers evolved from
Reptile scales
__ capture their prey with a ring of stinging tentacles
Cnidarians
What organism can live in hot springs and thermal vents
Archaea
Which nutrient is not a source of energy for the body?
Vitamins
What type of reproduction shuffles the genes?
Sexual
How many cotyledons would be found in a flowering plant with 9 petals on each flower and long leaves with parallel leaf veins
One
What is the pathway of blood flow in a closed circulatory system?
Heart, Arteries, Capillaries, Veins
What chamber of the heart receives blood from the pulmonary veins
Left Atrium
During development, an embryo is embedded in the
Endometrium
What would cause a plant to grow taller
Gibberellins
During transpiration, water exits the leaf via
The stomata
Which of the following is the largest?
Bronchi
Annual rings in woody stems are caused by an increase in rings of the
Secondary Xylem
Too much calcium in a persons diet may result in
Kidney Stones
In plants, the purpose of auxins is to
bring about apical dominance
What happens when the lungs recoil
Expiration
Invitro fertilization takes place in
a Laboratory
What is the internal lining of many organ called?
Epithelium
__ the science of observing and describing organisms in their environment paired with experimental science?
Ecology
The most common cause of desertification is
Overgrazing
A complex of interconnected food chains in an ecosystem is called a/an
Food wed
What is NOT a renewable source of energy?
Nuclear
What is one result of the “Green Revolution”
An increase in the yield of crops for less developed countries
Environmental impact of a population includes all of the following except
Predation
Which one of the following phrases describes many countries within Asia and Africa?
LDC’s experiencing rapid population growth
Completation, predation, and parasitism are __ factors in influencing population growth
Density dependent
Which one of the following is an example of a resource partitioning?
2 species of squirrels - one eats acorns from the branches and one eats acorns that have fallen to the ground
A species particular position in the community is its
Niche
What is the correct definition of carrying capacity?
The number of individuals an environment can sustain
