Aqa as biology 74011 - Study guides, Class notes & Summaries

2023 AQA AS BIOLOGY 7401/1 Paper 1 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]

2023 AQA AS BIOLOGY 7401/1 Paper 1 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]

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...

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

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

2023 AQA AS BIOLOGY 7401/1 Paper 1 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]

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

2023 AQA AS BIOLOGY 7401/1 Paper 1 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]

2 Answer all questions in the spaces provided. 0 1 . 1Describe the primary structure of all proteins. [2 marks] 0 1 . 2 This question is about the genetic code. Define universal, non-overlapping and degenerate. [3 marks] Universal Non-overlapping Degenerate Do not write outside the box 5 IB/M/Jun23/7401/1 3 | P a g e 3 0 2Figure 1 shows a transmission electron microscope (TEM) image of a Streptococcus bacterium. Figure 1 0 2 . 1 Describe how the appearance of the area conta...

AQA AS BIOLOGY 7401/1 Paper 1 Question Paper & Mark scheme June 2023 VERIFIED 100% What are the advantages of multi-cellular organisms? - --able to move -able to hunt(likely to he in top if food chain) -able to adapt to environment -specialised body reigons -able to find a mate What are the disadvantages of multi-cellular organisms? - -As they get bigger diffusion is less efficient and specialised exchange surfaces are needed Single felled organisms have a __________ surface area to volum...