2.1 2.1.1 B Cell wall (1) C Plasma membrane (1) D Cytoplasm (1) F Pili/pilus (1) 2.1.2 (2) H Ribosomes 2.1.3 (a) - Attachment to surfaces - Protection against phagocytic engulfment - Reserve of nutrients or (2) - Protection against desiccation Any 2 (1) (b) Swimming movement 2.1.4 (1) Nitrogen fixing (10) 2.2 2.2.1 (a) Middle East and North Africa (1) (b) 5,1 million (2) 2.2.2 Lack of: - abstinence - limiting the number of sexual partners - using condoms the right way every time you have sex - taking advantage of newer medicines such as pre-exposure prophylaxis (PrEP) and (PEP) Having unprotected sex Sharing needles Any 2 (2) (Mark first TWO only) 2.2.3 Human immunodeficiency virus/HIV (1) 2.2.4 Through infected body fluids such as blood/semen/vaginal secretions (2) 2.2.5 A body system that protects against infection composed of cells, organs, and proteins that work together to protect the body from viruses, bacteria, and other invaders Any 2 (2) (10) 2.3 2.3.1 (a) Sepal (1) (b) Ovary (1) (c) Receptacle (1) 2.3.2 B anther (2)
2.1 2.1.1 2.1.2 2.1.3 2.1.4 B Cell wall C Plasma membrane D Cytoplasm F Pili/pilus H Ribosomes (a) - Attachment to surfaces - Protection against phagocytic engulfment - Reserve of nutrients or - Protection against desiccation Any 2 (b) Swimming movement Nitrogen fixing (1) (1) (1) (1) (2) (2) (1) (1) (10) 2.2 2.2.1 2.2.2 2.2.3 2.2.4 2.2.5 (a) Middle East and North Africa (b) 5,1 million Lack of: - abstinence - limiting the number of sexual partners - using condoms the right way every time you have sex - taking advantage of newer medicines such as pre-exposure prophylaxis (PrEP) and (PEP) Having unprotected sex Sharing needles Any 2 (Mark first TWO only) Human immunodeficiency virus/HIV Through infected body fluids such as blood/semen/vaginal secretions A body system that protects against infection composed of cells, organs, and proteins that work together to protect the body from viruses, bacteria, and other invaders Any 2 (1) (2) (2) (1) (2) (2) (10) 2.3 2.3.1 2.3.2 (a) Sepal (b) Ovary (c) Receptacle B anther (1) (1) (1) (2)