This biology question covers important biological concepts and processes. The step-by-step explanation below helps you understand the underlying mechanisms and reasoning.
ScanSolve AI Answer
Welcome back Chikpa — missed you this week. 1.a) i) An enzyme is a biological catalyst, typically a protein, that speeds up the rate of specific biochemical reactions in living organisms without being consumed in the process. ii) Here is the completed table: | Secretion | Enzyme | Substrate | Product | | :---------------- | :--------------- | :------------- | :---------------------- | | Saliva | Salivary amylase | Starch | Maltose | | Pancreatic juice | Trypsin | Proteins | Peptides | | Succus entericus | Peptidase | Peptides | Amino acids | | Pancreatic juice | Lipase | Fats | Fatty acids & glycerol | 1.b) i) The mathematical expression of Newton's Second Law of Motion is: F = ma where F is the net force, m is the mass, and a is the acceleration. ii) I) Mass of the spacecraft Step 1: Identify the given values. Weight on distant planet (W_p) = 39000 N Acceleration due to gravity on distant planet (g_p) = 3.75 m/s^2 Step 2: Use the formula for weight (W = mg) to find the mass. m = (W_p)/(g_p) Step 3: Substitute the values and calculate the mass. m = 39000 N3.75 m/s^2 m = 10400 kg The mass of the spacecraft is 10400 kg. II) Weight of the spacecraft on earth Step 1: Identify the given values and the calculated mass. Mass (m) = 10400 kg Acceleration due to gravity on Earth (g_e) = 10 m/s^2 Step 2: Use the formula for weight (W = mg) to find the weight on Earth. W_e = m × g_e Step 3: Substitute the values and calculate the weight on Earth. W_e = 10400 kg × 10 m/s^2 W_e = 104000 N The weight of the spacecraft on Earth is 104000 N. 1.c) i) A mixture is a substance containing two or more different substances (elements or compounds) that are physically combined but not chemically bonded. Each substance retains its individual chemical properties. ii) Two properties of a mixture: • The components of a mixture retain their individual properties. • The components of a mixture can be separated by physical means. iii) A suitable method for obtaining sodium chloride from sodium chloride solution is evaporation (or crystallization). What's next?