EOCT Review 6 30 Questions Created by Brandy

EOCT Review #6 30 Questions Created by Brandy Mc. Clain

1 Which of the following is a consumer-producer relationship? a. b. c. d. Roadrunners eating snakes Snakes eating toads Toads eating grasshoppers Grasshoppers eating grass

2 Why does the white-tailed deer population drop when the carrying capacity is exceeded? a. b. c. d. Resources are too low to support the population Weather changes reduce deer population The height of edible plants exceeds the height of the deer Competition by other animals is greatly reduced

3 Before a cell goes through either mitosis or meiosis, which process must be carried out by the DNA in the nucleus? a. Replication b. Transcription c. Translation d. Nondisjunction

4 Which of the following processes return water vapor to the atmosphere? a. Precipitation & condensation b. Transpiration & precipitation c. Transpiration & evaporation d. Evaporation & condensation

5 Which two organisms are most likely to compete with each other for sunlight? a. Zebra and wildebeest b. Mushroom and pine tree c. Birch tree and mosses d. Zebra and mosses

6 To which of these organisms is the gray wolf (Canis lupus) most closely related? a. Calidris alba b. Anarhichas lupus c. Quercus rubra d. Canis familiaris

7 In order for a species to survive and be fit, it must be able to – a. b. c. d. consume a wide variety of food reproduce successfully maintain a constant body temperature destroy competing species

8 A human zygote, like most other human cells, contains 46 chromosomes. How many chromosomes does a human zygote receive from the mother? a. 0 b. 23 c. 46 d. 92

9 Enzymes are classified as which of the following biological organic compounds? a. Lipids b. Proteins c. Carbohydrates d. Nucleic acids

10 Which cell process will move substances against a concentration gradient? a. diffusion b. facilitated diffusion c. osmosis d. active transport

11 Individuals who lack lactase are unable to break down the sugar lactose. Which term best describes lactase? a. Enzyme b. Starch c. Carbohydrates d. Fatty acid

12 Sexual reproduction provides for what to occur? a. cloning b. budding c. genetic stability d. genetic variation

13 Which is responsible for most genotypic and phenotypic variation among humans? a. meiosis b. mitosis c. cloning d. budding

14 Which is the best evidence of an evolutionary relationship between two organisms? a. Similarity in behavior b. Similarity in habitat c. Similarity in DNA d. Similarity in niche

15 In the carbon cycle, atmospheric carbon dioxide is converted into organic material by which process? a. Transpiration b. Cellular respiration c. Decomposition d. Photosynthesis

16 Why do ecosystems rarely contain more than a few trophic levels? a. Energy transfer efficiency is high. b. Energy transfer efficiency is low. c. Energy amounts remain constant. d. Energy cannot flow through levels.

17 Recent climate data suggests a global warming trend. The most likely cause could be an increase in which gas? a. Oxygen b. Carbon dioxide c. Water d. Nitrogen

18 The diagram below represents a freshwater protist. Which letter indicates a structure that prevents the accumulation of excess water in the protist? a. A b. B c. C d. D

19 According to Darwin's theory of evolution, differences between species may be the result of a. the disuse of body structures b. the transmission of acquired characteristics c. natural selection d. mutagenic agents

20 Two nucleotide sequences found in two different species are almost exactly the same. This suggests that these species a. Are evolving into the same species b. Contain identical DNA c. May have similar evolutionary histories d. Have the same number of mutations

21 The structural similarities between the flippers of whales and the arms of humans are used to show that the a. Human species began life in the oceans b. Human species and whales have a common ancestry c. Whales are older than the human species d. Whales evolved from the human species

22 Variations within a species are most likely the result of a. b. c. d. Mutations and sexual reproduction Synapsis and disjunction Mitosis and asexual reproduction Overpopulation and recombination

23 Which diagram most correctly represents the process of mitosis? a. 1 b. 2 c. 3 d. 4

24 Which diagram represents an organelle that contains the enzymes needed to synthesize ATP in the presence of oxygen? a. 1 b. 2 c. 3 d. 4

25 This graph shows how, during a chemical reaction, enzymes -- a. decrease the required time b. raise the energy produced c. lower the required activation energy d. increase the initial-state energy

26 Predators often feed on weak or sick animals in an ecosystem. The role of the predator is described as its a. niche b. community c. population d. habitat

27 Some viral diseases require only one vaccination, which lasts for years. For other diseases like the flu, vaccinations last only one season. The flu vaccine lasts such a short time because the flu virus a. Is more easily transmitted b. Mutates much more rapidly c. Is less dangerous d. Is much smaller

28 When a virus infects a bacterium, what does the virus inject into the cell? a. Viral nucleic acid b. Capsid proteins c. Hormones d. Tail fibers

29 The function of the cell organelle circled below is to produce energy. What is the name of this organelle? a. Lysosomes b. Cell membrane c. Ribosome d. Mitochondria

30 Which of the following “organisms” is considered to be an exception to the cell theory? a. Bacteria b. Paramecium c. Virus d. Yeast

The End!!