Show:
Cells
Genetics
Ecology
Evolution
Organisms
100
The molecular sequence, or blueprint for a protein, is originally carried by which molecule?
What is DNA
100
DNA replication occurs in a cell in all of the following situations, EXCEPT when
What is when proteins are synthesized
100
All the finches Charles Darwin observed on the Galapagos Islands
What is shared a common ancestor
100
For many centuries, legend has held that the Loch Ness monster, a dinosaur-like creature, exists in a lake in Scotland. Many hypothesize that the Loch Ness monster is a pleisiosaur, a lake-living dinosaur thought to have been extinct for millions of years. The majority of scientists do not believe this is possible. Blurry photographs and video recordings show unusual shadows and movements in the lake, but no other signs of the Loch Ness monster have been recorded. Why do scientists dispute the claim that the Loch Ness monster is a real creature?
What is Because there is not a definite link between the pleisiosaur hypothesis and the evidence.
100
The process of cellular respiration _______?
What is breaks down food molecules to release stored energy.
200
A cell with 1% solute concentration is placed in a beaker with a 5% solute concentration. What will happen to this cell over time? *Hint: hypertonic
What is the cell will lose H2O and shrink
200
In which phase of meiosis would certain gene segments of the homologous pairs of chromosomes "cross over" and exchange genetic information?
What is prophase I
200
Place the developments in evolutionary history in the proper time frame. I) Charles Darwin writes 'On the Origin of Species'. II) LaMarck writes about evolution through acquired traits, using a giraffe as his model. III) DNA sequencing is developed, allowing the comparison of the genes of different organisms. IV) Malthus, an economist, writes about the inevitability that people will exhaust a food supply by reproducing too often.
What is IV, II, I, III
200
Which factor is NOT a strong piece of evidence for evolution? A) Fossil records show intermediate forms between modern species. B) Most species of bears share more than 99% of their DNA sequence. C) Many traits of modern birds resemble the fossils of winged dinosaurs. D) Lobsters have shells made of chitin, while clams use minerals to make theirs.
What is D) Lobsters have shells made of chitin, while clams use minerals to make theirs.
200
Which molecule is the source of basic material used for the production of glucose in the Calvin cycle? A) NADH B) water C) FADPH D) carbon dioxide
What is D) carbon dioxde
300
A cell is a complex system. Like most systems, a cell contains a boundary that separates things that are inside the system from those that are outside of the system. Which part of the cell functions as a system boundary?
What is the cell membrane
300
In gene tests for inherited colon cancer, scientists scan a patient's DNA sample for mutated sequences using short pieces of DNA, called probes. The sequences of the probes are complementary to the mutated sequences. What happens after a probe DNA is inserted into a patient’s genome?
What is the DNA probe binds to the mutated sequence and the flags mutation.
300
All BUT one factor contributes to natural selection. That factor is A) mutation B) random mating C) genetic drift D) environmental factors
What is B) random mating
300
In 1967 a penicillin-resistant pneumonia, caused by Streptococcus pneumoniae and called pneumococcus, surfaced in a remote village in Papua, New Guinea. At about the same time American military personnel in southeast Asia were acquiring penicillin-resistant gonorrhea from prostitutes. By 1976, when the soldiers had come home, they brought the new strain of gonorrhea with them and physicians had to find new drugs to treat it. In 1983 a hospital-acquired intestinal infection caused by the bacterium Enterococcus faecium joined the list of bacteria that could not be killed by penicillin. Which of these BEST describes why certain bacteria have become resistant to penicillin?
What is Penicillin was so heavily prescribed by doctors that it led to certain, more fit, strains of bacteria to be able to survive.
300
Which Kingdom of living things consists entirely of multi-celled, heterotrophic organisms?
What is animal
400
Small molecules like water, carbon dioxide, and nitrogen enter plant cells through the cell membrane. Plant cells also have specialized organelles called __________ that contain pigments that capture sunlight to use to make food.
What is chloroplasts
400
A plant has wrinkled seeds, which is dominant over non-wrinkled seeds. If this plant is crossed with a plant that has two recessive genes for non-wrinkled seeds, the offspring are all wrinkled-seeded. What is the likelihood that the gametes of the wrinkled seeded plant contain one non-wrinkled allele?
What is 0 %
400
A scientist examines the embryos of a penguin, a duck, and a bat. She finds that the embryos of penguins and ducks develop in a similar way, whereas the embryos of a bat develop in a way that is different from penguins and ducks. Which statement BEST explains this observation?
What is Penguins and ducks develop in a more similar way since their common ancestor is more recent than the common ancestor of penguins and bats or ducks and bats.
400
Green and brown algae share many common features. Both have pigments for trapping sunlight and use photosynthesis for energy. Both store their food as sugars. Both have cell walls and plant-like bodies. However, their DNA suggests that they are not even remotely related to one another. Green algae and brown algae show __________________ evolution, since they look similar, but are not close relatives.
What is convergent
400
Emile’s family is setting up a compost bin in their backyard in which organisms such as bacteria and earthworms will naturally recycle yard wastes and some foods. These organisms need both carbon and nitrogen to survive. Which of these materials in the compost bin is MOST LIKELY a good source of nitrogen? A) wood chips B) autumn leaves C) coffee grounds D) grass clippings
What is D) grass clippings
500
No matter what the cell type, prokaryotic or eukaryotic, plant or animal, the ____________ forms a protective barrier between the exterior environment and the interior of the cell.
What is cell membrane
500
DNA replication does not occur in a cell when _________.
What is when proteins are synthesized
500
Land degradation is a major issue worldwide and poses a threat to the sustainability of agriculture and economic development of many third world countries. Which statement best describes the major cause of land degradation in these countries?
What is water erosion caused by rain and runoff in semi-arid regions
500
Farmer Fran sprays her sugarcane field with a highly effective pesticide called 'Bayou Bug Blast'. For five years the pesticide works without a hitch, effectively killing almost all of the bayou weevils trying to eat Farmer Fran's crop. However, during the 6th year, some of the crop takes a hit. During the 7th year, she loses half of her crop, and during the 8th year, she loses almost the entire cane field to bayou weevils, despite using twice the usual dose of Bayou Bug Blast. What happened?
What is The weaker weevils were killed, and Farmer Fran accidentally caused only pesticide-resistant beetles to survive.
500
Soil bacteria are responsible for carrying many steps in the nitrogen cycle. Soil bacteria are NOT responsible for A) assimilation. B) nitrification. C) ammonification. D) nitrogen fixation.
What is A) assimilation