BIOLOGY
Which of the following is present in a prokaryotic cell?
A. Ribosome
B. Nucleus
C. Lysosome
D. Golgi apparatus
Answer: A. Ribosome
Which of the following is the smallest unit of an element that retains its chemical properties?
Answer: B. Atom
What is the outermost layer of the Earth called?
A. Mantle
B. Core
C. Crust
D. Atmosphere
Answer: C. Crust
Who is known for the principle of buoyancy?
A. Archimedes
B. Blaise Pascal
C. Daniel Bernoulli
D. James Joule
Answer: A. Archimedes
A cell contains numerous mitochondria. What does this MOST likely indicate about the cell?
A. It requires large amounts of energy.
B. It stores large amounts of water.
C. It produces large amounts of cellulose.
D. It performs extensive photosynthesis.
Answer: A. It requires large amounts of energy.
The chemical symbol for gold is Au. From which Latin name is the symbol “Au” derived?
A. Aurum
B. Aurelia
C. Aureus
D. Austrium
Answer: A. Aurum
What type of rock is formed from cooled magma or lava?
Answer: Igneous rock
A student pushes a box, but the box does not move. What can be concluded about the forces acting on the box?
A. No force is acting on the box.
B. The forces are balanced.
C. Gravity has disappeared.
D. The box has no mass.
Answer: B. The forces are balanced.
What is the final electron acceptor of the electron transport chain that functions in aerobic oxidative phosphorylation?
Answer: Oxygen
Which two subatomic particles contribute most of the mass of an atom?
Answer: Protons and Neutrons
What is the primary cause of seasons on Earth?
A. Distance from the Sun
B. The tilt of Earth’s axis
C. The Moon’s gravity
D. Ocean currents
Answer: B. The tilt of Earth’s axis
What do you call the type of lens that converges parallel rays of light?
Answer: Convex lens
Through a microscope, you observe a cell plate beginning to develop across the middle of a cell, with nuclei forming on either side of the cell plate. What type of cell and stage of cell division are you most likely observing?
A. An animal cell undergoing cytokinesis
B. A plant cell undergoing cytokinesis
C. A bacterial cell undergoing cell division
D. A plant cell in metaphase
Answer: B. A plant cell undergoing cytokinesis
What type of chemical bond involves the sharing of electrons between atoms?
A. Ionic bond
B. Covalent bond
C. Metallic bond
D. Hydrogen bond
Answer: B. Covalent bond
Which layer of the atmosphere contains the ozone layer that protects us from ultraviolet radiation?
A. Troposhere
B. Stratosphere
C. Mesosphere
D. Thermosphere
B. Stratosphere
What is the electromagnetic radiation with the shortest wavelength and highest frequency?
Answer: gamma rays
What are the two energy-carrying molecules supplied by the light-dependent reactions to the Calvin cycle?
Answer: ATP and NADPH
A neutral atom has a mass number of 23 and an atomic number of 11. How many neutrons does the atom have?
Answer: 12
What type of plate boundary is found at the Mid-Atlantic Ridge?
Answer: Divergent boundary
A metal block has a mass of 600 g and occupies a volume of 200 cm³. What is the density of the metal block?
Answer: B. 3 g/cm³