As biology 74011 - Study guides, Class notes & Summaries

2023 AQA AS BIOLOGY PAPER 1 QUESTION PAPER AND MARK SCHEME 74011 BUNDLE

AQA AS Biology 7401/1 Paper 1 June 2024

AS Biology (7401/1) Paper 1 Specimen Latest Update 01 . 1) Describe how you could use cell fractionation to isolate chloroplasts from leaf tissue. [3 marks] - ANSWER-1. How to break open cells and remove debris; 2. Solution is cold/isotonic/buffered; 3. Second pellet is chloroplast; 01 . 2) (Figure 1 shows a photograph of a chloroplast taken with an electron microscope. Figure 1) Name the parts of the chloroplast labelled A

AQA AS Biology 7401/1 Paper 1 June 2024

BIOLOGY AQA AS 74011 PAPER 1 [WELL VERIFIED] • The human cell then makes a complementary strand to the HIV DNA. The complementary strand is made in the same way as a new complementary strand is made during semi-conservative replication of human DNA. Describe how the complementary strand of HIV DNA is made. - ANS---- there are complementary nucleotides/bases pair - DNA polymerase used - Nucleotides join together (to form new strand)/phosphodiester bonds form; Contrast the structures of ...

2023 AQA AS BIOLOGY 7401/1 Paper 1 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] Please write clearly in block capitals. Centre number Surname Forename(s) Candidate signature Candidate number I declare this is my own work. AS BIOLOGY Paper 1 Monday 15 May 2023 Morning Time allowed: 1 hour 30 minutes Materials For this paper you must have: • a ruler with millimetre measurements • a scientific calculator. Instructions • Use black ink or black ball-point pen. ...

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

BIOLOGY AQA AS LEVEL 74011 PAPER 1[REAL 100%] • The human cell then makes a complementary strand to the HIV DNA. The complementary strand is made in the same way as a new complementary strand is made during semi-conservative replication of human DNA. Describe how the complementary strand of HIV DNA is made. - ANS---- there are complementary nucleotides/bases pair - DNA polymerase used - Nucleotides join together (to form new strand)/phosphodiester bonds form; Describe the difference be...

2023 AQA AS BIOLOGY PAPER 1 QUESTION PAPER AND MARK SCHEME 74011 BUNDLE

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