2024 aqa as biology 74011 - Study guides, Class notes & Summaries

2024 AQA AS BIOLOGY 7401/1 Paper 1 Question Paper & Mark Scheme (Merged) June 2024 [VERIFIED]

AQA AS BIOLOGY 7401/1 Paper 1 Mark scheme June 2024 Version: 1.0 Final

2024 AQA AS BIOLOGY 7401/1 Paper 1 Question Paper & Mark scheme (Merged) June 2023 VERIFIED / Biology AQA AS level 7401/1 Paper 1 Describe the induced-fit model of enzyme action - ANSWER-- active site not complementary to/does not fit substrate - Shape of active site changes as enzyme- substrate complex forms - Distorting bonds (in substrate leading to reaction) • The human cell then makes a complementary strand to the HIV DNA. The complementary strand is made in the same way as a new com...

Explain why high levels of sugars in a person's diet could lead to obesity. (3) - CORRECT ANSWERS-energy intake higher than energy output (1) (excess) {energy / sugars} can be {stored as / converted to} fat (1) leading to weight gain (greater than overweight) (1) obesity as indicated by a {BMI above 30 / waist-hip ratio greater than 0.85 in women or 1.0 for men}

Actual 2024 AQA AS BIOLOGY 7401/1 Paper 1 Merged Question Paper + Mark Scheme

AQA AS BIOLOGY 7401/1 Paper 1 Mark scheme June 2024

AQA AS BIOLOGY Paper 1 7401/1 Question paper June 2024

AQA 2024 AS BIOLOGY 7401/1 Paper 1 Specimen 01z.z1)zDescribezhowzyouzcouldzusezcellzfractionationztozisolatezchloroplastszfromzleafztissue.z[3zmarks]z-zCORRECTzANSWER-1.zHowztozbreakzopenzcellszandzremovezdebris; 2.zSolutionziszcold/isotonic/buffered; 3.zSecondzpelletziszchloroplast; 01z.z2)z(Figurez1zshowszazphotographzofzazchloroplastztakenzwithzanzelectronzmicroscope. Figurez1) NamezthezpartszofzthezchloroplastzlabelledzAzandzB. z[2zmarks]z-zCORRECTzANSWER-1.zAzstroma; 2.zBz...

Actual 2024 AQA AS BIOLOGY 7401/1 Paper 1 Merged Question Paper + Mark Scheme

AQA AS Biology Paper 1 June 2024 Mark Scheme(7401/1)