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10 minutes maximum! Can you do it in 5? |
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1-4: The image shows a cell in two stages of cell division: This type of cell division can be found all over the body, but not in the sex organs. |
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1. Which statement about this type of cell division is false?
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2. Where in plants is this type of cell division is found?
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3. What is structure X in the diagram above?
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4. In this type of cell division, which statement below is NOT true?
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5. Sexual reproduction involves the production of gametes and a different type of cell division. Some of the stages of this type of cell division are shown in the diagram.
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Which statement about this type of cell division is untrue?
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6+7: Whilst mitosis and meiosis are both types of cell division they differ from each other.
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6. The statements describing mitosis are ..
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7. The statements describing meiosis are ..
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| 8+9: The diagram shows an important molecule that makes up the chromosomes:
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8. The molecule in the diagram is ...
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9. Which of the following rows correctly describes X and Y in the diagram above?
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10. A genome is ...
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Question 1:
The correct answer is C. It is called meiosis.
Explanation:
The description matches mitosis, which is the type of cell division that produces two genetically identical daughter cells. It occurs throughout the body (except in the sex organs for gamete production) and is involved in growth, repair, and asexual reproduction.
A. It is called mitosis – True. This describes mitosis.
B. It is involved in asexual reproduction – True (e.g., binary fission in some organisms, or mitotic division in budding).
C. It is called meiosis – False for this context. Meiosis occurs only in sex organs to produce gametes (sperm and egg cells) and involves two divisions, producing four genetically different cells.
D. It is involved in the growth of an organism – True. Mitosis allows an organism to grow by increasing cell number.
Thus, C is the false statement.
*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.
Question 2:
The correct answer is C. In the ends of roots.
Explanation:
The type of cell division described in the previous question is mitosis. In plants, mitosis occurs in regions called meristems, where active cell division takes place. These include the root tips (ends of roots) and shoot tips.
A. In the petals of flowers – Petals are mostly mature cells; they grow mainly by cell expansion, not active division, once formed.
B. In a mature leaf – Mature leaves have very little cell division; growth occurs mainly at the leaf base (in some plants) or not at all once mature.
C. In the ends of roots – Correct. The root tip contains the apical meristem, where many mitotic divisions occur for root growth.
D. In the xylem vessels – Xylem vessels are dead at maturity and do not divide.
*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.
Question 3:
D. Chromosome
Explanation:
Chromosomes are thread-like structures made of DNA and protein found inside the nucleus.
*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.
Question 4:
The correct answer is C. Four cells are produced.
Explanation:
The question refers to mitosis (as established in previous questions). In mitosis:
A. True – The daughter cells are genetically identical to the parent cell.
B. True – The chromosome number remains the same (diploid → diploid, for example).
C. Not true – Mitosis produces two daughter cells, not four. Four cells are produced in meiosis (after two divisions).
D. True – Mitosis produces two cells.
Thus, C is the statement that is NOT true for this type of cell division (mitosis).
*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.
Question 5:
The correct answer is A. The daughter cells are identical to the parent cell.
Explanation:
The type of cell division described (production of gametes, occurs in reproductive organs) is meiosis.
A. Untrue – In meiosis, the daughter cells (gametes) are not identical to the parent cell; they have half the number of chromosomes and different genetic combinations due to crossing over and independent assortment.
B. True – Meiosis occurs in the reproductive organs (ovaries and testes in animals; anthers and ovules in plants).
C. True – It is called meiosis.
D. True – The genetic material in the daughter cells is different from the parent cell (and from each other).
Thus, A is the false statement.
*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.
Question 6:
Mitosis:
Starts with 1 cell → statement 1
Relatively quick → statement 3
2 daughter cells formed → statement 4
Chromosome number same as parent → statement 7
Mitosis: 1, 3, 4, 7 → Matches C.
*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.
Question 7:
Meiosis:
Starts with 1 cell → statement 1
Takes a long time → statement 2
4 daughter cells formed → statement 5
Chromosome number half that of parent → statement 6
Meiosis: 1, 2, 5, 6 → Matches B.
*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.
Question 8:
Diagram description: double helix, outer strands labelled Y, "ladder steps" labelled X.
The molecule described is DNA (deoxyribonucleic acid), which has a double helix structure with sugar-phosphate backbones on the outside and base pairs (A-T, G-C) forming the rungs.
✅ Correct answer: A. DNA
*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.
Question 9:
From standard DNA structure:
X = ladder steps = complementary base pairs (A-T, G-C) held together by hydrogen bonds (but X itself is the base pairs, not the bonds).
Y = outer strands of the helix = sugar + phosphate backbone.
Look at the rows:
A. X: Complementary base pairs; Y: Hydrogen bonds → No, because Y is the backbone, not hydrogen bonds (these are between X).
B. X: Hydrogen bonds; Y: Complementary base pairs → No, X is the base pairs, not hydrogen bonds (though H-bonds hold X together).
C. X: Sugar + phosphate backbone; Y: Complementary base pairs → Wrong, that’s reversed (X is base pairs, Y is backbone).
D. X: Complementary base pairs; Y: Sugar + phosphate backbone → ✅ Correct.
*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.
Question 10:
The correct answer is B. all the genetic material of an organism.
Explanation:
A genome is the complete set of genetic information (DNA) in an organism, including all of its genes and non-coding sequences.
A. a short length of DNA – This is a gene or a DNA fragment, not a genome.
B. all the genetic material of an organism – Correct definition.
C. a change in the DNA – This describes a mutation.
D. the name of the person who discovered DNA – There is no person named "Genome"; DNA was discovered by multiple scientists (e.g., Friedrich Miescher, Watson & Crick).
*These A.I. responses have been individually checked to ensure they match the accepted answer, but explanations may still be incorrect. Responses may give guidance but the A.I. might not be able to answer the question! This is particularly the case for questions based on diagrams, which the A.I. typically cannot interpret.
Grade Gorilla uses Gemini, Deepseek and a range of other A.I. chatbots to generate the saved responses. Some answers have had human intervention for clarity or where the A.I. has not been able to answer the question.