alevel biology paper 1 aqa Flashcards
What is the basic unit of life?
The cell.
True or False: DNA stands for Deoxyribonucleic Acid.
True.
Fill in the blank: The process by which cells obtain energy from glucose is called _____.
cellular respiration.
What is the function of ribosomes?
To synthesize proteins.
Which organelle is known as the powerhouse of the cell?
Mitochondria.
Multiple Choice: Which of the following is NOT a component of the cell theory? A) All living things are composed of cells B) Cells are the basic unit of life C) All cells come from pre-existing cells D) Cells can arise spontaneously.
D) Cells can arise spontaneously.
What is the role of chloroplasts in plant cells?
To conduct photosynthesis.
True or False: Prokaryotic cells have a nucleus.
False.
Fill in the blank: The semi-permeable membrane surrounding the cell is called the _____.
plasma membrane.
What are the three stages of cellular respiration?
Glycolysis, Krebs cycle, and electron transport chain.
Multiple Choice: Which of the following processes produces the most ATP? A) Glycolysis B) Krebs cycle C) Electron transport chain D) Fermentation.
C) Electron transport chain.
What is the main purpose of meiosis?
To produce gametes for sexual reproduction.
True or False: Enzymes are consumed during chemical reactions.
False.
Fill in the blank: The sequence of DNA that codes for a protein is called a _____.
gene.
What is the function of the cell wall in plant cells?
To provide structure and support.
Multiple Choice: Which molecule carries amino acids to the ribosomes? A) mRNA B) tRNA C) rRNA D) DNA.
B) tRNA.
What is the difference between mitosis and meiosis?
Mitosis produces two identical daughter cells, while meiosis produces four genetically diverse gametes.
True or False: All enzymes are proteins.
True.
Fill in the blank: The genetic makeup of an organism is known as its _____.
genotype.
What is homeostasis?
The maintenance of a stable internal environment.
Multiple Choice: Which of the following is a type of passive transport? A) Active transport B) Osmosis C) Endocytosis D) Exocytosis.
B) Osmosis.
What is the primary function of the nervous system?
To coordinate and control body activities.
True or False: Homologous chromosomes are identical.
False.
Fill in the blank: The theory that explains how species evolve over time is known as the theory of _____.
evolution.
What is the role of the plasma membrane?
To regulate what enters and exits the cell.
