Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 46766
TLS Online TPP Program

#Question id: 18904

Advantages of using short half-life isotopes

#SCPH06 I Botany
  1. It will be easier and cheaper to dispose of
  2. High specific activity makes the experiments more sensitive.
  3. Lower doses likely (e.g., in diagnostic testing of human subjects)
  4. a, b, and c all
More Questions
TLS Online TPP Program

#Question id: 10903

#SCPH05 I Biotechnology

Materials translocated in the phloem, such as sucrose, amino acids, hormones and some inorganic ions. Some inorganic solutes that move in the phloem called mobile elements. In contrast, some are relatively immobile in the phloem.

A) Immobile elements

B) Mobile elements

i) potassium, magnesium, phosphate, and chloride

ii) caesium, zinc, magnesium and iron

iii) nitrate, calcium, sulfur, and iron

iv) potassium, calcium, cobalt and caesium

Which of the following are the correct match of mobile and immobile elements in the phloem?
TLS Online TPP Program

#Question id: 353

#SCPH28 | Zoology

Measurements show that the pH of a particular lake is 4.0. What is the hydrogen ion concentration of the lake?
TLS Online TPP Program

#Question id: 24441

#SCPH06 I Botany

If the heart rate is 90 beats/min, what is the cycle length?
TLS Online TPP Program

#Question id: 12940

#SCPH01 Biochemistry

 Choose the correct order for the steps involve in Protein engineering.
1. Protein modelling
2. Protein crystallography
3. Site-directed mutations
4. Comparison with entries in databases of known proteins.
TLS Online TPP Program

#Question id: 8858

#SCPH06 I Botany

Which of these factors, when used to label the horizontal axis of the graph in Figure 33.1, would account most directly for the shape of the plot?