Skip to content
MathsGenie logo
Open app

Course home

  1. A Level
  2. Biology OCR A
  3. Question bank

Ecosystems

EasyMedium
12345678910111213141516171819202122232425
Question 23

An ecologist monitoring an estuary collected water samples to measure the concentration of a specific diatom species during a spring bloom. At a depth of 5 metres, the concentration of diatoms, CCC (in cells per cm3\text{cm}^3cm3), was determined to satisfy the relationship log⁡10(C)=5.38\log_{10}(C) = 5.38log10​(C)=5.38.

Calculate the total number of diatom cells present in a 120 cm3120\text{ cm}^3120 cm3 water sample taken from this depth.

Provide your answer in standard form to two significant figures.

[3]

Ecosystems Questions

  1. A Level
  2. /Biology
  3. /Ecosystems