1.
State what is meant by a eukaryotic cell.
[1 mark]
- cell with a nucleus and organelles
JD SCIENCE
Core biology
Indicative marking points. Award marks for equivalent scientific or mathematical wording. Do not issue this sheet with the student worksheet.
2.
State what is meant by a prokaryotic cell.
[1 mark]
- no nucleus, DNA in the cytoplasm
3.
State what is meant by biological molecules.
[1 mark]
- carbohydrates, lipids, proteins, nucleic acids
4.
State what is meant by an enzyme.
[1 mark]
- biological catalyst with an active site
5.
State what is meant by DNA.
[1 mark]
- double helix of nucleotides
6.
State what is meant by the cell cycle.
[1 mark]
- interphase, mitosis, cytokinesis
7.
State what is meant by a pathogen.
[1 mark]
- organism or agent that causes disease
8.
State what is meant by the immune response.
[1 mark]
- non-specific then specific
9.
State what is meant by transport in organisms.
[1 mark]
- diffusion, osmosis, active transport
10.
State what is meant by microbiology.
[1 mark]
- study of microorganisms
11.
Noah is asked about a eukaryotic cell in a NCFE Science paper.
(a) [2 marks]
- animal, plant, fungal
(b) [3 marks]
- different from prokaryotes
12.
Noah is asked about a prokaryotic cell in a NCFE Science paper.
(a) [2 marks]
- bacteria
(b) [3 marks]
- 70S ribosomes, cell wall
13.
Noah is asked about biological molecules in a NCFE Science paper.
(a) [2 marks]
- built by condensation
(b) [3 marks]
- hydrolysed in digestion
14.
Noah is asked about an enzyme in a NCFE Science paper.
(a) [2 marks]
- affected by T, pH, inhibitors
(b) [3 marks]
- used in food and diagnostics
15.
Noah is asked about DNA in a NCFE Science paper.
(a) [2 marks]
- A-T and G-C
(b) [3 marks]
- codes for proteins
16.
Noah is asked about the cell cycle in a NCFE Science paper.
(a) [2 marks]
- growth and repair
(b) [3 marks]
- errors can cause tumours
17.
Magnification = 12 mm / 8 µm. Magnification?
[3 marks]
- Final answer: ×1500
18.
A culture doubles every 30 min. Cells from 1 after 3 h?
[3 marks]
- Final answer: 64
19.
Enzyme rate 18 cm³ in 3 min. Mean rate?
[3 marks]
- Final answer: 6 cm³/min
20.
A DNA sample is 20% adenine. Percentage thymine?
[3 marks]
- Final answer: 20%
21.
Cfu: 45 colonies from 0.1 cm³ of a 10⁻⁴ dilution. cfu/cm³?
[3 marks]
- Final answer: 4.5 × 10⁵
22.
SA:V of a 2 cm cube
[3 marks]
- Final answer: 3 : 1
23.
Noah carries out a T-Level occupational task on T-Level core biology. This is a typical NCFE required-practical style question.
(a) [2 marks]
- Independent: the factor being investigated
- Dependent: the measured result or quality check
(b) [2 marks]
- follow the SOP and keep other variables constant
- so the test is fair / only one variable is changed
(c) [2 marks]
- not recording the batch/lot number or operator ID
24.
Noah carries out writing or following an SOP for T-Level core biology. This is a typical NCFE required-practical style question.
(a) [2 marks]
- Independent: a step in the method
- Dependent: whether the acceptance criteria are met
(b) [2 marks]
- same calibrated instrument
- so the test is fair / only one variable is changed
(c) [2 marks]
- skipping a verification check
25.
Noah carries out a COSHH / risk-assessment review for T-Level core biology. This is a typical NCFE required-practical style question.
(a) [2 marks]
- Independent: hazard
- Dependent: control measure effectiveness
(b) [2 marks]
- same PPE and waste route
- so the test is fair / only one variable is changed
(c) [2 marks]
- using expired reagents or the wrong waste stream
26.
Noah carries out data review in a LIMS or quality log for T-Level core biology. This is a typical NCFE required-practical style question.
(a) [2 marks]
- Independent: sample ID
- Dependent: result vs specification
(b) [2 marks]
- same calculation method
- so the test is fair / only one variable is changed
(c) [2 marks]
- transcription error between the instrument and the LIMS
27.
Compare a eukaryotic cell with an enzyme.
[4 marks]
- cell with a nucleus and organelles
- biological catalyst with an active site
- state one workplace implication
28.
Compare a prokaryotic cell with DNA.
[4 marks]
- no nucleus, DNA in the cytoplasm
- double helix of nucleotides
- state one workplace implication
29.
Compare biological molecules with the cell cycle.
[4 marks]
- carbohydrates, lipids, proteins, nucleic acids
- interphase, mitosis, cytokinesis
- state one workplace implication
30.
Compare an enzyme with a pathogen.
[4 marks]
- biological catalyst with an active site
- organism or agent that causes disease
- state one workplace implication
31.
Apply your knowledge of a pathogen to this situation: bacteria, viruses, fungi, protozoa
[3 marks]
- bacteria, viruses, fungi, protozoa
32.
Apply your knowledge of the immune response to this situation: phagocytes, antibodies, memory cells
[3 marks]
- phagocytes, antibodies, memory cells