Terms and Definitions (Grade 12 NSC Matric Life Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Which nitrogenous base pairs with adenine in DNA?
Which nitrogenous base pairs with adenine in DNA?
Thymine
How many cells does meiosis produce from one diploid cell?
How many cells does meiosis produce from one diploid cell?
Four genetically different haploid cells
What does heterozygous mean?
What does heterozygous mean?
Two different alleles e.g. Tt
Why are males more likely to express sex-linked conditions like haemophilia?
Why are males more likely to express sex-linked conditions like haemophilia?
Males have only one X chromosome
Which neuron transmits impulses from sense organs to the spinal cord and brain?
Which neuron transmits impulses from sense organs to the spinal cord and brain?
Sensory neuron
Which brain region coordinates voluntary movements and maintains balance?
Which brain region coordinates voluntary movements and maintains balance?
Cerebellum
What happens to ciliary muscles when the eye focuses on near objects?
What happens to ciliary muscles when the eye focuses on near objects?
They contract, lens becomes thicker
What is vivipary?
What is vivipary?
Young develop inside mother's uterus
What is the role of negative feedback in homeostasis?
What is the role of negative feedback in homeostasis?
Detect changes and restore balance
What is the independent variable in an investigation?
What is the independent variable in an investigation?
The variable that is manipulated