IB DP Biology Semester 1 Exam Review Question Preview (ID: 61744)
Topics 1.1 - 1.5
Topics 2.1 - 2.7.
TEACHERS: click here for quick copy question ID numbers.
Which statement accurately describes a hypertonic solution?
a) a) The solute concentration outside the cell is higher than inside, causing water to move into the cell.
b) b) The solute concentration outside the cell is lower than inside, causing water to move into the cell.
c) c) The solute concentration outside the cell is higher than inside, causing water to move out of the cell.
d) d) The solute concentration outside the cell is lower than inside, causing water to move out of the cell.
When a cell is placed in an isotonic solution, what happens to the cell?
a) swells and burst
b) shrinks and shrivels
c) remains the same shape and size
d) undergoes rapid division
Which of the following structures is responsible for the selective permeability of the plasma membrane?
a) a) Phospholipid bilayer
b) b) Cholesterol molecules
c) c) Integral proteins
d) d) Glycolipids
What is the function of cholesterol in the plasma membrane?
a) a) To provide structural support and maintain membrane fluidity
b) b) To facilitate transport of molecules across the membrane
c) c) To act as recognition markers for cell-cell communication
d) d) To break down waste materials in the cell
Which of the following best describes the structure of the plasma membrane?
a) a) A single layer of phospholipids
b) b) A double layer of phospholipids with embedded proteins
c) c) A rigid structure made of cellulose
d) d) A network of microtubules and microfilaments
What is the function of the vacuole in a plant cell?
a) cellular respiration
b) storage of water, ions and nutrients
c) protein synthesis
d) regulation of cell growth
Which organelle contains enzymes responsible for breaking down waste materials and cellular debris?
a) lysosome
b) nucleus
c) chloroplast
d) rER
Which organelle is responisble for energy production in a cell?
a) Nucleus
b) Golgi Apparatus
c) Mitochondria
d) Endoplasmic Reticulum
What is the function of the Golgi apparatus in a cell?
a) protein synthesis
b) storage of genetic material
c) cell division
d) packing and modifiying proteins
Which organelle is involved in the synthesis of lipids and detoxification of drugs in a cell?
a) lysosome
b) ribosome
c) peroxisome
d) vacuole
Which of the following statements is NOT a part of the cell theory?
a) all living organisms are composed of cells
b) cells are the basic units of structure and function in living organisms
c) all cells have a nucleus
d) cells comes from pre existing cells
Which theory proposes that eukaryotic cells evolved through the engulfment and integration of smaller prokaryotic cells?
a) endosymbiotic
b) cell differentiation
c) spontaneous generation
d) lamarckian
According to the endosymbiotic theory, which of the following organelles is thought to have originated from an ancient symbiotic relationship between a eukaryotic host cell and an engulfed prokaryotic cell?
a) mitochrondria
b) nucleus
c) golgi apparatus
d) vacuole
The synthesis of urea in a laboratory setting played a crucial role in challenging which scientific concept?
a) vitalism
b) cell theory
c) germ theory
d) evolution
What type of bond holds the hydrogen atoms to the oxygen atom within a water molecule?
a) ionic
b) covalent
c) hydrogen
d) van der waals forces
What property of water allows it to moderate temperature changes and maintain a stable environment?
a) high heat capacity
b) low surface tension
c) high vapor pressure
d) low density
How does water's polarity contribute to its ability to dissolve many substances?
a) a) The oxygen atom attracts electrons more than hydrogen, creating partial positive and negative charges.
b) b) The hydrogen atoms attract electrons more than oxygen, creating partial positive and negative charges.
c) c) The oxygen atom and hydrogen atoms share electrons equally, resulting in a neutral charge.
d) d) The oxygen atom loses electrons to the hydrogen atoms, creating a positive charge.
What happens during the condensation of sugar molecules?
a) a) Sugar molecules are broken down into simpler units.
b) b) Sugar molecules combine to form a larger molecule and release water.
c) c) Sugar molecules react with oxygen to produce energy.
d) d) Sugar molecules dissolve in water to form a solution.
What process is involved when disaccharides are broken down into monosaccharides?
a) dehydration
b) oxidation
c) fermentation
d) hydrolysis
How does hydrolysis differ from condensation in terms of the sugar molecules involved?
a) a) Hydrolysis involves the combination of sugar molecules, while condensation involves their breakdown.
b) b) Hydrolysis releases water, while condensation consumes water.
c) c) Hydrolysis occurs in the absence of enzymes, while condensation requires specific enzymes.
d) d) Hydrolysis breaks down larger sugar molecules into smaller ones, while condensation forms larger sugar molecules from smal
Play Games with the Questions above at ReviewGameZone.com
To play games using the questions from above, visit ReviewGameZone.com and enter game ID number: 61744 in the upper right hand corner or click here.
To play games using the questions from above, visit ReviewGameZone.com and enter game ID number: 61744 in the upper right hand corner or click here.
TEACHERS / EDUCATORS
Log In | Sign Up / Register
Log In | Sign Up / Register