Biology Toughest Practice Quiz: Test!

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1. The organelles in plant cells that contain a green pigment are the 

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Biology Toughest Practice Quiz: Test! - Quiz

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2. The scientific study of heredity is called 

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3. The primary function of DNA is to 

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4. The process whereby plants capture energy and make complex molecules is known as 

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5. Suspended in the fluid stroma of chloroplasts are 

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6. Homologous structures in organisms provide evidence that the organisms 

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7. Atoms are composed of 

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8. Polar molecules such as water have 

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9. Which organic molecule below is classified as a carbohydrate? 

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10. If an individual possess two recessive alleles for the same trait, the individual is said to be 

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11. Each organism has a unique combination of characteristics encoded in molecules of 

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12. The ancestors of today's land plants were probably 

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13. The smallest units of life in all living things are 

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14. When tow solutions in different concentrations are separated by a membrane, there is a difference in concentration across the space. This is known as a 

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15. The surface of Earth is protected from damming ultraviolet light by

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16. Anatomical structures that appear to be derived from a functional strutter in an ancestor, but that current do not served as unimportant function, are called 

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17. Acidic solutions have a pH that is 

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18. The organelles associated with photosynthesis are the 

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19. Amino acids are monomers of 

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20. Nucleic acids include 

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21. ALL active transport systems required this molecule to function 

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22. The function of tRNA is to 

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23. Which of the following is not found in DNA?

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24. During translation, a ribosome binds to 

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25. If a plant's flowers are very colorful and produce nectar, the plant is probably pollinated by 

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26. The "father" of genetics was 

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27. Plasma membranes 

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28. A calcium ion channel will allow 

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29. Diffusion takes place 

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30. Molecules that can simple diffuse through the cell membrane (pass throng the lipid bilayer) are typically 

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31. The sun is considered the ultimate source of energy for life on Earth because 

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32. The names of the scientists that discovered that DNA is a double helix are 

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33. RNA 

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34. A pathogen is an agent that is 

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35. Autotrophs are organisms that can 

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36. When light strikes an object, the light may be 

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37. The smallest particle of carbon that can retain the chemical properties of carbon is 

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38. Enzymes

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39. Only eukaryotic cells have 

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40. Without enzymes, the chemical reactions in the body would 

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41. The process by which water passes into or out of the cell is called 

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42. Negatively charged particles that move around the outside of an atom's nucleus is called 

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43. The phenotype of an organism 

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44. In order to fit within a cell, DNA becomes more compact by 

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45. Which of the following bacteria are thought to be responsible for establishing Earth's oxygen-rich atmosphere?

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46. Many animals have a head that is located at the _____ end of their body and a tail that is located at the _____ end of their body. 

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47. The haploid form in a plant's life cycle is called the 

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48. Mendel obtained his P generation by allowing the plants to 

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49. The size to which a cell can grow is limited by its 

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50. The age of Earth is estimated to be approximately 

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51. Which of the following is a carbohydrate? 

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52. Carbon atoms are fixed into organic compounds in 

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53. Pseudopodia are used for 

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54. One difference between prokaryotes and eukarotes is that 

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55. The dispersal of ink in a beaker of water is an example of 

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56. Each of the following is a type of RNA except 

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57. When an atom loses electrons, it becomes 

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58. When crossing-over takes place, chromosomes 

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59. Animals probably evolved from 

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60. Carbohydrates 

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61. All the following are carbohydrates EXCEPT 

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62. Which of the following is a characteristic of prokaryotes? 

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63. As a result of diffusion, the concentration of many types of substances 

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64. Buffers 

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65. Where does energy required for the Calvin cycle come from? 

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66. The phloem in a plant 

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67. Viruses 

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68. Gram-postivie bacteria differ from Gram-negative bacteria in 

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69. All the following are lipids except 

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70. Which of the following is most likely a vestigial structure? 

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71. All mater in the universe is composed of 

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72. In which of the following is a cell's ATP produced? 

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73. Proteins are made on the 

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74. All of the following are found in both plant and animal cells, except 

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75. Plant cells have a large-membrane bound space in which water, waste products, and nutrients are stored. This place is known as the 

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76. Molecules that are too large to be moved across a cell membrane can be removed from the cell by 

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77. On what basis have bacterial traditionally been classified?

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78. A group of similar cells organized into a functional unit is called 

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79. Symmetrical phyla include all the following except 

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80. Organic compounds contain 

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81. The breakdown of polymers involve 

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82. The bond formed when two atoms share a pair of electron is called a 

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83. Atoms become more stable when they form compounds because 

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84. Monocots have 

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85. At some state of their development, all chordates have a flexible rod of tissue along their back called the 

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86. Which of the following is not a vector of viral diseases? 

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87. Foods that contain mostly carbohydrates include all the following EXCEPT 

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88. The electrons of an atom 

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89. The Golgi apparatus is an organelle that 

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90. The sodium-potassium pump usually pumps 

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91. Which of the following is an acquired human characteristic? 

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92. Abiogenesis is 

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93. The X and Y chromosomes are called the 

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94. Which of the following is not a vertebrate adaptation to life on land?

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95. Hookes's discovery of cells was made by observing  

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96. When electrons of a chlorophyll molecules are raised to a higher energy level, 

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97. RNA 

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98. A neutral solution has an equal number of 

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99. One important organelle that helps maintain homeostasis by moving supplies form one part of the cell to the other is the 

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100. Damaged DNA is repaired by 

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101. All protist 

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102. Viruses are considered nonliving because 

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103. Which of the following has been the most successful at fighting viral diseases?

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104. The law of segregation explains that  

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105. Scientists have inferred that the first cells were 

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106. Which of the following is not ​a way of preventing a food borne illness at home?

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107. When tested with a Gram stain, Gram-positive bacteria are stained 

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108. Studying a picture of a cell taken within an electron microscope, you find that the cell has no nucleus and no mitochondria, but it does have a plasma membrane and a cell awl. You can conclude that the cell is probably a(n)

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109. Which of the following gases was thought by Oparin to be part of Earth's early atmosphere? 

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110. What product of the light rections of photosynthesis is released from the plant and does not participate further in photosynthesis? 

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111. A cross between an individual heterozygous for a trait and an individual recessive for the trait will probably produce offspring with 

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112. Which of the following is an example of a prokaryotic cell? 

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113. A substance that is composed of only one type of atom is called a(n)

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114. When a molecules gains an electron, it has been 

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115. A structure within a cell that performs a specific function is called a(n) 

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116. Plant cells 

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117. The formation of ADP and inorganic phosphate from ATP and water is an example of which kind of reaction? 

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118. Which of the following is not part of a molecule of DNA? 

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119. Some land plants developed an internal system of interconnected tubes and vessels called 

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120. In plants, haploid spores are produced as a result of 

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121. In an ionic bond, 

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122. The exchange of segments of DNA between the members of a pair of chromosomes 

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123. In plant cells, cytokineses occurs when 

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124. The difference between RNA and DNA is in the 

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125. Evidence that evolution occurs includes all the following except 

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126. Polysaccharides are 

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127. Energy is released when the bond between 

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128. Sugar molecules can enter cells through the process of 

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129. Genetic drift is 

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130. When atoms share electrons, it is called what kind of bond? 

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131. The sugar in DNA is 

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132. Animals store glucose in the form of 

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133. What happens when a chlorophyll molecules absorbs light?

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134. Carbon is different from many other elements in that 

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135. Ridding the cell of material by discharging it from sacs at the cell surface is called 

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136. The role of accessory pigments in photosynthesis are 

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137. Surface area is an important factor in limiting cell growth because 

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138. Chlorophyll is green because

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139. Which of the following does not expand energy? 

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140. The sudden shift of horn that is often seen in the fossil record is explained by scientists as 

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141. Flowering plants are classified as monocots or dicots acceding to their number of 

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142. The xylem in a plant 

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143. The solution with a pH of 11 is 

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144. A water molecule is polar because its hydrogen and oxygen atoms 

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145. What function do the fruits produced by angiosperms perform?

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146. One difference between human body cells and bacterial cells is that bacterial cells have 

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147. The number of covalent bonds a carbon atom can form with other atoms is 

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148. At the end of the ETC in photosystem I, electron 

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149. Which one do you like?

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150. Euglena is an example of a protist that 

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151. When the volume of a cell increases, its surface ares

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152. The bonds between bases in the double helix are 

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153. A molecule that has a partial positive charge on one side and a partial negative charge on the other side is called a 

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154. The structure that regulates what enters or leaves the cell is called the 

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155. Inorder for protein synthesis to occur, mRNA must migrate to the 

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156. If nondisjunction occurs, 

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157. Which of the following associations incorrectly describes an archaebacterium and its characteristics? 

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158. Examples of monomers include all the following expect 

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159. The double membrane surrounding the nucleus is called the 

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160. Molecules of DNA are composed of long chains of 

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161. The diploid form in a plant's life cycle is called the 

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162. Atoms that have gained energy 

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163. Which of the following is not fungi a way that fungi can harm humans?

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164. Replication occurs 

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165. The bonds in the sugar-phosphate backbone of the double helix are 

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166. Numerous hairlike organelles that protrude from the surface of a cell and are packed in tight rows are called 

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167. Plants store glucose in the form of 

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168. During transcription, 

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169. What is the consequence of violating the Hardy-Weinburg genetic equilibrium assumptions?

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170. Separation of homologous occurs during 

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171. The role of chlorophyll in photosynthesis is to 

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172. The process by which a single-celled eukaryote engulfs a prokaryote is 

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173. Members of each pair of allele separate when 

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174. The structures of organisms that have similar structures but different functions are called 

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175. Regions of active cell division in plants are called 

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176. Which of the following might be found in the cytoplasm of a bacterial cell?

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177. Autotrophic eukaryotes and autotrophic prokaryotes differ in that some autotrophic prokaryotes 

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178. A characteristic shared by all chordates at some stage of their development  is 

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179. Which of the following enters a cell by active transport?

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180. The individual filaments that make up a mycelium are called 

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181. In which cycle(s) does viral DNA become integrated into the host cell's DNA?

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182. Which of the following is not characteristic of facilitated diffusion?

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183. Which of the following types of RNA carries interaction for making protein? 

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184. The first organisms to evolve on Earth were most likely 

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185. Lipids 

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186. Which one do you like?

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187. Before life arose on this planet, which of these gases was present in the atmosphere? 

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188. Which of the following is true of microshperes and living cells?

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189. Fungi obtain energy 

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190. Which of the following is found only in animals? 

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191. Lipids are soluble in 

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192. Analogous structures 

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193. Atoms with filled outermost electron levels tend to 

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194. The difference between anaphase of mitosis I and anaphase I of meiosis is that 

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195. Bacteria cells typically lack 

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196. The enzymes responsible for adding nucleotides to the exposed DNA template bases are 

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197. Which of the following human activities is most closely associated with the emergence of viruses not previously seen in humans?

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198. In their experiment, Miller and Urey produced 

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199. As an animal develops, the ectoderm becomes the 

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200. The term base and alkaline ​refer to solutions that 

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The organelles in plant cells that contain a green pigment are...
The scientific study of heredity is called 
The primary function of DNA is to 
The process whereby plants capture energy and make complex...
Suspended in the fluid stroma of chloroplasts are 
Homologous structures in organisms provide evidence that the...
Atoms are composed of 
Polar molecules such as water have 
Which organic molecule below is classified as a...
If an individual possess two recessive alleles for the same...
Each organism has a unique combination of characteristics encoded...
The ancestors of today's land plants were probably 
The smallest units of life in all living things are 
When tow solutions in different concentrations...
The surface of Earth is protected from damming ultraviolet light...
Anatomical structures that appear to be derived from a...
Acidic solutions have a pH that is 
The organelles associated with photosynthesis are the 
Amino acids are monomers of 
Nucleic acids include 
ALL active transport systems required this molecule to...
The function of tRNA is to 
Which of the following is not found in DNA?
During translation, a ribosome binds to 
If a plant's flowers are very colorful and produce nectar, the...
The "father" of genetics was 
Plasma membranes 
A calcium ion channel will allow 
Diffusion takes place 
Molecules that can simple diffuse through the cell membrane...
The sun is considered the ultimate source of energy for life on...
The names of the scientists that discovered that DNA is a double...
RNA 
A pathogen is an agent that is 
Autotrophs are organisms that can 
When light strikes an object, the light may be 
The smallest particle of carbon that can retain the chemical...
Enzymes
Only eukaryotic cells have 
Without enzymes, the chemical reactions in the body would 
The process by which water passes into or out of the cell is...
Negatively charged particles that move around the outside of an...
The phenotype of an organism 
In order to fit within a cell, DNA becomes more compact by 
Which of the following bacteria are thought to be responsible...
Many animals have a head that is located at the _____ end of their...
The haploid form in a plant's life cycle is called the 
Mendel obtained his P generation by allowing the plants...
The size to which a cell can grow is limited by its 
The age of Earth is estimated to be approximately 
Which of the following is a carbohydrate? 
Carbon atoms are fixed into organic compounds in 
Pseudopodia are used for 
One difference between prokaryotes and eukarotes is that 
The dispersal of ink in a beaker of water is an example...
Each of the following is a type of RNA except 
When an atom loses electrons, it becomes 
When crossing-over takes place, chromosomes 
Animals probably evolved from 
Carbohydrates 
All the following are carbohydrates EXCEPT 
Which of the following is a characteristic...
As a result of diffusion, the concentration of many types of...
Buffers 
Where does energy required for the Calvin cycle come from? 
The phloem in a plant 
Viruses 
Gram-postivie bacteria differ from Gram-negative bacteria in 
All the following are lipids except 
Which of the following is most likely...
All mater in the universe is composed of 
In which of the following is a cell's ATP produced? 
Proteins are made on the 
All of the following are found in both plant and animal...
Plant cells have a large-membrane bound space in which water, waste...
Molecules that are too large to be moved across a...
On what basis have bacterial traditionally been classified?
A group of similar cells organized into a functional unit is...
Symmetrical phyla include all the following except 
Organic compounds contain 
The breakdown of polymers involve 
The bond formed when two atoms share a pair of electron is called...
Atoms become more stable when they form compounds because 
Monocots have 
At some state of their development, all chordates have a flexible...
Which of the following is not a vector of viral...
Foods that contain mostly carbohydrates include all the...
The electrons of an atom 
The Golgi apparatus is an organelle that 
The sodium-potassium pump usually pumps 
Which of the following is an acquired...
Abiogenesis is 
The X and Y chromosomes are called the 
Which of the following is not a vertebrate adaptation to life on...
Hookes's discovery of cells was made by observing  
When electrons of a chlorophyll molecules are raised to a higher...
RNA 
A neutral solution has an equal number of 
One important organelle that helps maintain homeostasis by moving...
Damaged DNA is repaired by 
All protist 
Viruses are considered nonliving because 
Which of the following has been the most successful at fighting viral...
The law of segregation explains that  
Scientists have inferred that the first cells were 
Which of the following is not ​a way of preventing...
When tested with a Gram stain, Gram-positive bacteria are...
Studying a picture of a cell taken within an electron microscope,...
Which of the following gases was thought by Oparin to be part of...
What product of the light rections of photosynthesis...
A cross between an individual heterozygous for a trait and an...
Which of the following is an example of a prokaryotic cell? 
A substance that is composed of only one type of atom is called a(n)
When a molecules gains an electron, it has been 
A structure within a cell that performs a specific function is called...
Plant cells 
The formation of ADP and inorganic phosphate from ATP and water...
Which of the following is not part of a molecule of...
Some land plants developed an internal system of interconnected tubes...
In plants, haploid spores are produced as a result of 
In an ionic bond, 
The exchange of segments of DNA between the members of a pair of...
In plant cells, cytokineses occurs when 
The difference between RNA and DNA is in the 
Evidence that evolution occurs includes all the following...
Polysaccharides are 
Energy is released when the bond between 
Sugar molecules can enter cells through the process of 
Genetic drift is 
When atoms share electrons, it is called what kind of bond? 
The sugar in DNA is 
Animals store glucose in the form of 
What happens when a chlorophyll molecules absorbs light?
Carbon is different from many other elements in that 
Ridding the cell of material by discharging it from sacs at the cell...
The role of accessory pigments in photosynthesis are 
Surface area is an important factor in limiting cell growth...
Chlorophyll is green because
Which of the following does not expand energy? 
The sudden shift of horn that is often seen in the fossil...
Flowering plants are classified as monocots or dicots acceding to...
The xylem in a plant 
The solution with a pH of 11 is 
A water molecule is polar because its hydrogen and oxygen atoms 
What function do the fruits produced by angiosperms perform?
One difference between human body cells and bacterial cells...
The number of covalent bonds a carbon atom can form with...
At the end of the ETC in photosystem I, electron 
Which one do you like?
Euglena is an example of a protist that 
When the volume of a cell increases, its surface ares
The bonds between bases in the double helix are 
A molecule that has a partial positive charge on one side and a...
The structure that regulates what enters or leaves the cell is called...
Inorder for protein synthesis to occur, mRNA must migrate to the 
If nondisjunction occurs, 
Which of the following associations incorrectly describes an...
Examples of monomers include all the following expect 
The double membrane surrounding the nucleus is called the 
Molecules of DNA are composed of long chains of 
The diploid form in a plant's life cycle is called the 
Atoms that have gained energy 
Which of the following is not fungi a way that fungi can...
Replication occurs 
The bonds in the sugar-phosphate backbone of the double helix...
Numerous hairlike organelles that protrude from the surface of a cell...
Plants store glucose in the form of 
During transcription, 
What is the consequence of violating the Hardy-Weinburg genetic...
Separation of homologous occurs during 
The role of chlorophyll in photosynthesis is to 
The process by which a single-celled eukaryote engulfs...
Members of each pair of allele separate when 
The structures of organisms that have similar structures but...
Regions of active cell division in plants are called 
Which of the following might be found in the cytoplasm of a bacterial...
Autotrophic eukaryotes and autotrophic prokaryotes differ in that some...
A characteristic shared by all chordates at some stage of...
Which of the following enters a cell by active transport?
The individual filaments that make up a mycelium are called 
In which cycle(s) does viral DNA become integrated into the host...
Which of the following is not characteristic of facilitated...
Which of the following types of RNA carries interaction for...
The first organisms to evolve on Earth were most likely 
Lipids 
Which one do you like?
Before life arose on this planet, which of these gases was present in...
Which of the following is true of microshperes and living cells?
Fungi obtain energy 
Which of the following is found only in animals? 
Lipids are soluble in 
Analogous structures 
Atoms with filled outermost electron levels tend to 
The difference between anaphase of mitosis I and anaphase I of meiosis...
Bacteria cells typically lack 
The enzymes responsible for adding nucleotides to the exposed DNA...
Which of the following human activities is most closely...
In their experiment, Miller and Urey produced 
As an animal develops, the ectoderm becomes the 
The term base and alkaline ​refer...
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