Replication
protein synthesis
classification
plants
evolution and origin of earth
100
Then, DNA polymerases add complementary nucleotides to each strand which results in the formation of two identical DNA molecules. This process is known as DNA _______. A.translation B.transcription C. replication D. cloning
What is replication
100
When a cell needs a particular protein synthesized, messenger RNA (mRNA) is produced from DNA through transcription. How is genetic information "read" from mRNA? A. as ribose B. amino acids C.as codons D.as uracil
What is C.as codons
100
A microscopic, single celled organism that has no defined, membrane bound nucleus would fit best into which two kingdoms? A. Fungi and Eubacteria B. Plantae and Archaebacteria C. Animalia and Protista D. Archaebacteria and Eubacteria
What is D. Archaebacteria and Eubacteria
100
Which of these adaptations would most directly assist a plant in reproducing? A. waxy leaves B. shallow roots C. thick stems D. bright flowers
What is D. bright flowers
100
Organisms with traits that are well-suited to an environment tend to survive and reproduce at a greater rate than organisms that are less suited to an environment. This phenomena is known as _______. A. natural selection B. independent assortment C. the circle of life D. sexual reproduction
What is A. natural selection
200
A parent DNA molecule replicates, resulting in two daughter DNA molecules. Which of the following is true? A. Each daughter molecule contains two new strands of DNA. B. Each daughter molecule contains four total strands of DNA. C. Each daughter molecule contains two DNA strands from the parent molecule. D. Each daughter molecule contains one DNA strand from the parent molecule.
What is D. Each daughter molecule contains one DNA strand from the parent molecule.
200
DNA contains instructions for making the different molecules that a cell needs to grow and function. For example, _______ is made by _______. A. mRNA; translating DNA B. a protein; translating mRNA C. a protein; transcribing mRNA D. mRNA; transcribing proteins
What is B. a protein; translating mRNA
200
Which of the following characteristics would an organism classified in the Kingdom Plantae most likely exhibit? A. unicellular, eukaryotic, photosynthetic B. multicellular, prokaryotic, heterotrophic C. unicellular, prokaryotic, heterotrophic D. multicellular, eukaryotic, photosynthetic
What is D. multicellular, eukaryotic, photosynthetic
200
Sand spinifex grass is adapted to growing on sand dunes. It is a rapidly spreading plant and the creeping runners produce new root systems. Which of these best explains the benefits of these features? A. It allows the plant to tolerate salt. B. It protects the plant from predators. C. It provides support by anchoring the plant. D. It limits water loss through the leaves.
What is C. It provides support by anchoring the plant.
200
Which of the following contributes to genetic variability within a population? I.genetic drift II. gene flow III. mutations IV.non-random mating A. III and IV only B. I, II, III, and IV C. I and II only D. I, II, and III only
What is D. I, II, and III only
300
Which choice below correctly summarizes the base-pairing rules in DNA? A. A-U B. A-C C. A-T D.A-G C-G T-G C-G C-T
What is B. A-C T-G
300
Which of the following best describes the product of RNA translation? A. a chromosome B. a protein C. an RNA molecule D. a DNA molecule
What is B. a protein
300
Saccharomyces cerevisiae is a species of yeast that is often used in baking bread. This species is eukaryotic and unicellular. It also has a cell wall, uses organic compounds as a source of energy, and does not require sunlight to grow. Saccharomyces cerevisiae is classified in the A. Kingdom Animalia. B. Kingdom Fungi. C. Kingdom Plantae. D. Kingdom Protista.
What is B. Kingdom Fungi.
300
Based on the composition of phloem tissue, it is most likely used by the plant for A. the transport of sugars and other organic molecules. B. the conversion of light energy into sugar. C. the transport of water to the plant's leaves. D. the conversion of sugar into usable energy
What is A. the transport of sugars and other organic molecules.
300
The fossil record shows that the forelimbs of humans, cats, dolphins, and bats have the same skeletal elements. These skeletal elements have evolved into different shapes and sizes based on their function. For example, the flipper of a dolphin is adapted for swimming and the wing of a bat is adapted for flying. What do the similarities between the skeletal structures of these four species most likely indicate about their evolutionary history? What kind of structures would they be? A. These four species are not related and do not share a common ancestor. homologous structures B. These four species all evolved from a common flying ancestor. analogous structures C. These four species are distantly related and share a common ancestor. homologous structures D.These four species are all descended from the same parent organism. analogous structures
What is C. These four species are distantly related and share a common ancestor. homologous structures
400
What are the three main components of a DNA molecule? A. a sugar, a nucleotide, and an amino acid B. a sugar, a phosphate group, and an amino acid C. a sugar, a phosphate group, and a nitrogenous base D. a sugar, a water molecule, and a nitrogenous base
What is C. a sugar, a phosphate group, and a nitrogenous base
400
Which of the following best describes the product of RNA translation? A. a chromosome B. a protein C. an RNA molecule D. a DNA molecule
What is B a protein
400
Which of the following is a characteristic of members of the Kingdoms Archaebacteria and Eubacteria, that distinguishes them from members of all other kingdoms? A. the ability to synthesize proteins B. presence of cilia and flagella C. the ability to undergo photosynthesis D. absence of a cellular nucleus
What is D. absence of a cellular nucleus
400
In vascular plants, specialized root hairs on the roots of the plant are responsible for taking up water and nutrients. The water taken up by the roots of the plant can then be transported to the rest of the plant through the plant's _______. A. chloroplasts B.phloem tissue C. xylem tissue D.mitochondria
What is C. xylem tissue
400
All species have a certain amount of genetic diversity within their populations. How is genetic diversity important to the concept of natural selection? A. The more genetic diversity a species has, the less likely it is that natural selection will occur. B. Genetic diversity controls the speed at which natural selection is able to occur. C. Genetic diversity decreases the generation time of species, which contributes to rapid natural selection. D. Without genetic diversity, natural selection cannot occur.
What is D. Without genetic diversity, natural selection cannot occur.
500
The sequence of bases on one strand of a DNA molecule is ATTGCCCATG. What will be the sequence on the complementary strand? A. ATTGCCCATG B. GCCATTTGCA C. TAACGGGTAC D. CGGTAAACGT
What is C. TAACGGGTAC
500
Translation involves the assembling of proteins. Which of the following forms of RNA is responsible for carrying a formed amino acid to the protein assembly site during translation? Which is responsible for carrying the message from DNA? A. tRNA, mRNA B. RNA polymerase, DNA polymerase C. rRNA, tRNA D. mRNA, tRNA
What is A. tRNA, mRNA
500
) In 1990, Carl Woese introduced the three domain system for classifying living things, after the advancement of DNA analysis allowed for a comparison of species genetic code. Which of the following is the best explanation for why domains were added to the previous system of classification? A. The old system of classification was wrong and needed to be corrected. B. New species are evolving too quickly to keep up with the old system of classification C. Domains have always been included, they were just made official recently. D. Some organisms, which were previously characterized together, were determined to be genetically very different.
What is D. Some organisms, which were previously characterized together, were determined to be genetically very different.
500
The pineapple plant closes its stomata during the day and opens its stomata during the night. This process helps the plant conserve water by preventing A. hydrotropism. B. transpiration. C. condensation. D. photosynthesis.
What is B. transpiration.
500
Genetic drift can best be defined as A. a change in the allelic frequency within a population due to differential reproductive success. B. a change in the allelic frequency within a population due to random chance. C. the transfer of alleles from one breeding population to another. D. the adaptation of a population due to environmental changes
What is B. a change in the allelic frequency within a population due to random chance.
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