Indicate whether the following statements are true or false by placing a tick (✔) in the appropriate box in each case - Leaving Cert Biology - Question 3 - 2020
Question 3
Indicate whether the following statements are true or false by placing a tick (✔) in the appropriate box in each case.
(a) Spindle fibres contract during metaphase ... show full transcript
Worked Solution & Example Answer:Indicate whether the following statements are true or false by placing a tick (✔) in the appropriate box in each case - Leaving Cert Biology - Question 3 - 2020
Step 1
(a) Spindle fibres contract during metaphase of mitosis.
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Answer
False. During metaphase, spindle fibres attach to the chromosomes and align them at the cell's equator, rather than contracting.
Step 2
(b) Glucose is produced by yeast cells during fermentation.
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Answer
True. Yeast cells convert sugars, such as glucose, into energy through the process of fermentation, producing alcohol and carbon dioxide.
Step 3
(c) The process of translation results in a protein being made.
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True. Translation is the process whereby ribosomes synthesize proteins based on the sequence of messenger RNA (mRNA).
Step 4
(d) Prokaryotic cells contain a nucleus.
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False. Prokaryotic cells are characterized by the absence of a true nucleus; their genetic material is located in a region called the nucleoid.
Step 5
(e) Darwin and Wallace proposed the Theory of Natural Selection.
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True. Both Charles Darwin and Alfred Russel Wallace independently developed the concept of natural selection as a mechanism for evolution.
Step 6
(f) A mutation to a cell's DNA always has a negative impact for the cell.
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False. While some mutations can be harmful, others may be neutral or even beneficial, potentially leading to advantageous traits.
Step 7
(g) The ribosome of the cell contains the chromosomes.
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Answer
False. Ribosomes are responsible for protein synthesis and do not contain chromosomes, which are found in the nucleus (in eukaryotic cells) or nucleoid region (in prokaryotic cells).
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