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Penn Foster Intro to Biology Proctored
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Which of the following is NOT a domain of the 3 domain system? - ✔✔Prokarya An atom of which of the following elements contains 6 protons and electrons? - ✔✔Carbon ___ is the name for all the chemical processes in the cell. - ✔✔Metabolism What does a receptor protein do? - ✔✔Allows a specific molecule to bind to it because of its shape ___ are modifications that make organisms suited to their way of life. - ✔✔Adaptations Example of a monosaccharide - ✔✔Glucose What is the MAIN energy molecule in the body? - ✔✔ATP Which of the following molecules is a byproduct of cellular respiration? - ✔✔Water 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 Which of the following structures surrounds the cytoplasm in a bacterial cell? - ✔✔Plasma membrane
Which of the following is TRUE of the scientific method? - ✔✔Accepted explanation for how the world works Binomial name given to an organism is composed of: - ✔✔Genus, Species Crossing-over involves the exchange of genetic information between: - ✔✔Nonsister chromatids Nucleic acids are composed of monomers called: - ✔✔Nucleotides Which of the following occurs in the cristae of the mitochondria? - ✔✔Electron transport chain What does electronegativity mean? - ✔✔Affinity for electrons in a covalent bond If you immerse a living cell in a hypertonic solution, water will: - ✔✔Move out of the cell Which of the following occurs during the light reactions of photosynthesis? - ✔✔NADPH production ___ chromosomes are found in pairs, one from father and mother - ✔✔Homologus Bacteria reproduce by: - ✔✔Binary Fission Autosomes are ___ chromosomes - ✔✔Nonsex What holds the base pairs of DNA together? - ✔✔Hydrogen bonding Which of the following is an x-linked recessive disorder? - ✔✔Color-blindness
Which of these is happening when translation 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 In the evolutionary adaption sense, what is fitness? - ✔✔The reproductive success of an individual 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 The distinction between protostomes and deuterostomes is based on differences in their: - ✔✔Embryological development In evolution, the study of vertebrae forelimbs is related to __ evidence. - ✔✔Anatomical evidence Which of the following structures develops into a pollen grain? - ✔✔Microspore Which one of the following choices presents a condition required for the Hardy-Weinberg principle to be in effect? - ✔✔Random mating occurs 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 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 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 organisms can live in hot springs and thermal vents? - ✔✔Archaea During the life cycle of a plant, gametophyte is to n as sporophyte is to: - ✔✔2n Which nutrient is not a source of energy for the body? - ✔✔Vitamins
Which of the following animals has a single-loop closed circulatory system? - ✔✔Fish InVitro fertilization takes place in: - ✔✔A laboratory What is the internal lining of many organs called? - ✔✔Epithelium Which structure transports sugars from leaves to the roots? - ✔✔Phloem Which of the following is a renewable resource? - ✔✔Wind During exponential growth, the rate of growth: - ✔✔Starts slowly then accelerates ___ is 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 web Which of the following factors will have a greater impact on a population as the density of that population increases? - ✔✔Predation All of the following are renewable sources of energy except ___ power. - ✔✔Nuclear 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 of the following was 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 Completion, predation, and parasitism are ___ factors influencing population growth. - ✔✔Density dependent Which one of the following is an example of resource partitioning? - ✔✔2 species of squirrels- one eats acorns from the branches and one that eats acorns that have fallen to the ground Which one of the following pollutants 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 A species particular position in a community is its: - ✔✔Niche Which of the following is the correct definition of carrying capacity? - ✔✔The number of individuals an environment can sustain
