Question 201
Which enzyme is responsible for unwinding the DNA double helix during replication?DNA and geneticsDNA replication and enzymes involvedhard
Select one option to submit your answer.
NSC Life Sciences – South Africa
AI-generated exam-style practice tailored for South Africa students.
Practice mode
Answer immediately. If you miss, we show exactly why your selected option is wrong.
Progress: 0/10 correct (0 answered)
Question 202
Which of the following provides the strongest evidence for evolution by common descent?EvolutionEvidence for evolutionhard
Select one option to submit your answer.
Question 203
Which hormone regulates blood glucose levels by lowering high blood sugar?Human physiologyEndocrine system functionmedium
Select one option to submit your answer.
Question 204
What is the primary advantage of internal fertilization over external fertilization?ReproductionReproductive adaptationseasy
Select one option to submit your answer.
Question 205
Which molecule is known as the genetic material that carries instructions for protein synthesis in cells?DNA and geneticsDNA and geneticseasy
Select one option to submit your answer.
Question 206
What process results in genetic variation by exchanging genetic material between homologous chromosomes during meiosis?DNA and geneticsDNA and geneticsmedium
Select one option to submit your answer.
Question 207
Which scientist proposed the theory of natural selection as a mechanism for evolution?EvolutionEvolutioneasy
Select one option to submit your answer.
Question 208
What is the main function of the human red blood cells?Human physiologyHuman physiologyeasy
Select one option to submit your answer.
Question 209
Which process converts glucose into energy in the mitochondria of cells?Human physiologyHuman physiologymedium
Select one option to submit your answer.
Question 210
Which of the following is an example of a vestigial structure in human evolution?EvolutionEvolutionhard
Select one option to submit your answer.