Growth and development 0.0 / 5 ? BiologyHow organisms developproducing new cellscontrolling growth and developmentGCSEOCR Created by: 10swalkersCreated on: 15-04-15 13:43 The zygote divides by mitosis to form an: Embryo. 1 of 31 Up to what stage in the growth of a human embryo are all of the cells identical? Eight-cell stage. 2 of 31 Cells at the two-cell stage of a human embryo are: Cells at the two-cell stage of a human embryo are embryonic. 3 of 31 Unspecialised cells in plants help cuttings to grow into fully developed plants. These plants are: Plants grown from cuttings are clones. 4 of 31 Which of the following is a difference between animals and plants? Only plants grow throughout their lives. 5 of 31 Unspecialised plant cells are grouped together in: Unspecialised plant cells are grouped together in meristems. 6 of 31 Which of the following best describes the effect of phototropism on a plant's chances of survival? Phototropism increases the chance of a plant's survival. 7 of 31 Phototropism works by making a plant stem grow: Phototropism works by making a plant stem grow towards the light. 8 of 31 Which of these best describes the effect of auxin on the size of cells in a plant's shoot? Increase or decrease. Increase. 9 of 31 If a plant shoot is illuminated from the right-hand side only, where will auxin accumulate in the shoot? If a plant shoot is illuminated from the right-hand side only, auxin will accumulate on the left-hand side. 10 of 31 The type of hormone that causes cell specialisation in plants is called: Auxin. 11 of 31 Which of these best describes the structure of DNA? Double helix. 12 of 31 Which type of cell division produces cells that are identical to their parent? Mitosis produces cells that are identical to their parent. 13 of 31 Which type of cell division produces cells that are identical to each other? Mitosis produces cells that are identical to each other. 14 of 31 Which type of cell division produces gametes? Meiosis produces gametes. 15 of 31 During the growth part of the cell cycle in mitosis, which of the following increases inside the cell? Organelles. 16 of 31 What happens next in mitosis when the two strands of DNA separate? After the two strands of DNA separate, the chromosomes are copied. 17 of 31 Which statement best describes what happens when cells divide by mitosis? Copies of chromosomes separate. 18 of 31 If a parent cell contains 46 chromosomes, how many chromosomes will a gamete contain? 23. 19 of 31 Which statement best describes the chromosomes found in a zygote? The chromosomes found in a zygote are best described as having a set from each parent. 20 of 31 Where in a cell is the genetic code held? Nucleus. 21 of 31 Where in a cell are proteins made? Cell proteins are made in the cytoplasm. 22 of 31 How do the instructions to make proteins pass from genes to the place where proteins are made? A copy of the gene carries the information to the place where proteins are made. 23 of 31 How many different bases are used to make DNA? 4. 24 of 31 Which statement about the bases found in DNA is true? Bases always pair-up in the same way. 25 of 31 Which of these molecules join to make proteins? Amino acides join to make proteins. 26 of 31 How many bases are used to code for each amino acid? 3. 27 of 31 Which statement about amino acids in a particular protein is true? They are arranged in a sequence. 28 of 31 Which of these best explains how bases code for proteins? The order of bases best explains how bases code for proteins. 29 of 31 Which statement best describes the genes in specialised cells? Genes in specialised cells are best described as some switched on, and some off. 30 of 31 Insulin is a protein. In what state must the insulin gene be to produce insulin? Insulin must be in a switched on state to produce protein. 31 of 31
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