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Tenth Grade (Grade 10) Science Questions

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Grade 10 Cell Structure and Function
Which of these accurately describes osmosis?
  1. The direction of the water flow is opposite of the gradient for the solute diffusion.
  2. The movement of water across a membrane. The solute is not permitted to diffuse by the membrane. The direction of the water flow is the same as the gradient for the solute diffusion.
  3. The movement of particles of solute from high concentration to low concentration when water cannot cross the cell membrane.
  4. The movement of particles across a cell membrane using energy derived from ATP
Grade 10 Cell Structure and Function
Grade 10 Acids and Bases
Which of the following represents an acid-base neutralization reaction?
  1. [math]AgCl + Na rarr NaCl + Ag[/math]
  2. [math]CH_3COOH + CH_3CH_2OH rarr CH_3COOCH_3CH_2 + H_2O[/math]
  3. [math]2H_3PO_4 + 6LiOH rarr 2Li_3PO_4 + 6H_2O[/math]
  4. None of the above
Grade 10 DNA, RNA, and Genetics
Grade 10 Cell Structure and Function
Where do most of a cell's chemical reactions take place?
  1. Nucleus
  2. Vacuole
  3. Cytoplasm
  4. Centriole
Grade 10 Cell Structure and Function
Grade 10 Evolution
Evolution is                                                                      .
  1. process of maintaining homeostasis
  2. process that results in the increase of living material in an organism
  3. process of accumulating adaptations gradually over time
  4. none of the above
Grade 10 Macromolecules
An enzyme speeds up a reaction by                               .
  1. absorbing energy
  2. lowering the activation energy
  3. raising the activation energy
  4. releasing energy
Grade 10 Cell Structure and Function
What is the function of the vacuole in a plant cell?
  1. control cell functions
  2. traps sunlight
  3. gives support
  4. holds water and gives shape
Grade 10 DNA, RNA, and Genetics
What is the long name for DNA?
  1. deoxynucleic acid
  2. deoxyribonucleic acid
  3. denatured ribonucleic acid
  4. deoxoribonuclear acid
Grade 10 Macromolecules
Of what are nucleic acids made?
  1. Sugars
  2. Fatty acids
  3. Nucleotides
  4. Amino Acids
Grade 10 DNA, RNA, and Genetics
The base pair rules states that                                                      .
  1. Replication is semiconservative
  2. A pairs with T, G pairs with C
  3. DNA is a double helix held together by hydrogen bonds
  4. A pairs with G, T pairs with C
Grade 10 DNA, RNA, and Genetics
Why is DNA called the "blueprint of life?"
  1. it is like a fingerprint
  2. it has a blue color
  3. it contains the plans for building an organism
  4. it can relay messages to other molecules
Grade 10 Cell Structure and Function
The percentage of a solute in a cell is 35% outside and 65% inside. What will be the behavior of the water?
  1. Move into the cell
  2. Move out of the cell
  3. Move in/out equally
  4. Evaporate
Grade 10 Periodic Table and Elements
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