Y9 Science Exam (Somerville House) 2023 PDF

A picture containing text, room, gambling house, scene Description automatically generated ##### *Somerville House* Student name: Student number: Teacher name: Date: ----------- ----------------------------------------------- Subject Year 9 Science Technique In-class exam Unit...

A picture containing text, room, gambling house, scene Description automatically generated ##### *Somerville House* Student name: Student number: Teacher name: Date: ----------- ----------------------------------------------- Subject Year 9 Science Technique In-class exam Unit Unit 1: Biology Topic Topic 1: Genetics and Patterns of inheritance ----------- ----------------------------------------------- +-----------------+-----------------+-----------------+-----------------+ | Conditions | | | | +=================+=================+=================+=================+ | Time | 70 minutes | Perusal/ | 10 minutes | | | | planning | | +-----------------+-----------------+-----------------+-----------------+ | Other | - - - - | | | | | | | | | | | | | | | - - | | | +-----------------+-----------------+-----------------+-----------------+ | Instructions | | | | +-----------------+-----------------+-----------------+-----------------+ | - Multiple | | | | | choices | | | | | questions: | | | | | select the | | | | | appropriate | | | | | answer from | | | | | the list of | | | | | possible | | | | | answers | | | | | provided. | | | | | | | | | | - Short | | | | | answers: | | | | | write a | | | | | short | | | | | answer to | | | | | the | | | | | questions | | | | | asked. | | | | +-----------------+-----------------+-----------------+-----------------+ | Criterion | Marks allocated | Result | | +-----------------+-----------------+-----------------+-----------------+ | Assessment | /50 | \% | | | objectives: | | | | | | | | | | ACSSU 184 | | | | +-----------------+-----------------+-----------------+-----------------+ **Assessed Australian Curriculum Descriptors** **Science Understanding** **Biological sciences** *Transmission of heritable characteristics from one generation to the next involves DNA and genes (ACSSU184)* - *Describe the role of DNA as the blueprint for controlling the characteristics of organisms* - *Using models and diagrams to represent the relationship between DNA, genes and chromosomes* - *Recognising that genetic information passed on to offspring is from both parents by meiosis and fertilisation* - *Representing patterns of inheritance of a simple dominant / recessive characteristic through generations of a family* - *Predicting simple ratios of offspring genotypes and phenotypes in dominant / recessive gene pairs (sex-linked = extension only)* - *Describe mutations as changes in DNA or chromosomes and outlining the factors that contribute to mutation* ### **[Science as a Human Endeavour](https://www.australiancurriculum.edu.au/f-10-curriculum/science/?year=12010&strand=Science+Understanding&strand=Science+as+a+Human+Endeavour&strand=Science+Inquiry+Skills&capability=ignore&capability=Literacy&capability=Numeracy&capability=Information+and+Communication+Technology+%28ICT%29+Capability&capability=Critical+and+Creative+Thinking&capability=Personal+and+Social+Capability&capability=Ethical+Understanding&capability=Intercultural+Understanding&priority=ignore&priority=Aboriginal+and+Torres+Strait+Islander+Histories+and+Cultures&priority=Asia+and+Australia%E2%80%99s+Engagement+with+Asia&priority=Sustainability&elaborations=true&elaborations=false&scotterms=false&isFirstPageLoad=false)Nature and development of science** Scientific understanding, including models and theories, is contestable and is refined. over time through a process of review by the scientific community [(ACSHE191)](http://www.scootle.edu.au/ec/search?accContentId=ACSHE191) #### Science Inquiry Skills #### Processing and analysing data and information - Analyse patterns and trends in data, including describing relationships between variables [(ACSIS203)](http://www.scootle.edu.au/ec/search?accContentId=ACSIS203) - Use knowledge of scientific concepts to draw conclusions that are consistent with evidence [(ACSIS204)](http://www.scootle.edu.au/ec/search?accContentId=ACSIS204) #### Communicating Communicate scientific ideas and information for a particular purpose, including constructing evidence-based arguments and using appropriate scientific language, conventions and representations [(ACSIS208)](http://www.scootle.edu.au/ec/search?accContentId=ACSIS208) - using a range of representations, including symbolic forms, to communicate science ideas **RESPONSE BOOK** **Only answers in the booklet will be marked** **[\ ]** a. **Determine** the possible genotype(s) of a person who can roll their tongue. **(1 mark)** b. **Complete** the following Punnett square, which shows the crossing of a homozygous recessive individual with a heterozygous individual: **(2 marks)** T --- --- -- t c. **Identify** the phenotypic ratios of the offspring from the Punnett square. **(1 mark)** **Question 2** **Contrast** three (3) differences between DNA and RNA (you may use a table or dot points). (**3 marks)** **Question 3** The bar chart below shows the percentage of guanine and thymine in a sample of DNA. **Complete** the bar chart to show the percentage of adenine and cytosine in the sample. **(1 mark)** **Question 4** The following image is an organised profile of a person's chromosomes  a. **Recall** the name given to the type of image shown. **(1 mark)** b. **Identify** and **circle** on the image the location of the abnormality. **(1 mark)** c. **Deduce** the type of cell this profile was taken from. **(1 mark)** **Question 6** **Identify** the labelled parts in the diagram below: (**3 marks)** **Question 7** **Match** the following cell structures to their role: **(5 marks)**  **Question 8** a. **Recall** the name of parts of the diagram below (**2 marks)** b. **Generate** the sequence of RNA from the DNA information provided (**2 marks)** DNA A C T G A T A C G A G ----- --- --- --- --- --- --- --- --- --- --- --- RNA                       c. **Using the codon table provided, identify** the amino acid chain created by the following RNA information **(4 marks)** RNA AGC AAC AUG UAU GUU GUA UAU UAA AAU CGA ------------ ----- ----- ----- ----- ----- ----- ----- ----- ----- ----- Amino Acid                     Why a Triplet Code? \| Gene Expression Part 1: Reading Genes to Make Proteins - passel **\ ** **Question 9** a. **Recall** the names of the stages of mitosis [and] **complete** the drawings for the two (2) empty diagrams in the image below. **(7 marks)** b. Explain the purpose of mitosis. **(1 mark)** c. Calculate the number of sister chromatids present in a dog nerve cell, following the replication of DNA during anaphase, given that dogs have 78 chromosomes. **(1 mark)** **Question 10** During meiosis the chromosomes go through the process of 'crossing over'. Explain what is meant by this term, and why it is important. **(2 marks)** [END OF TEST]