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Vraag 1 Verslag
Which statement about how all life started is NOT true according to current thinking on evolutionary trends?
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Vraag 8 Verslag
The interaction between members of the same population over scarce resources is called
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Vraag 12 Verslag
Thick succulent stems and leaves are an adaptation for conservation of water
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Vraag 13 Verslag
The incomplete breakdown of glucose into alcohol, carbon dioxide and energy is referred to as
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Vraag 14 Verslag
Use the data to answer this question
A class of 40 set out to determine the population of lizards in a bound field measuring 200 metres by 100 metres using the capture-recapture method.
In their first outing, the students captured a total of 360 lizards all of which were marked with indelible ink and then released back into the field.
After a one week interval the students went back into the field and caught a total of 250 lizards out of which 150 bore the indelible ink mark.
What is the estimated population of lizards in the field?
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Vraag 18 Verslag
Which excretory product is NOT found in mammals?
Vraag 20 Verslag
A group of interacting populations in a particular habitat can be described as
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Vraag 22 Verslag
The pro-condition for transfusion of blood to an accident victim is
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Vraag 25 Verslag
The result of placing a plant cell in a hypertonic solution for a long time is ________of the cell.
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Vraag 27 Verslag
Mammals are said to be homoiothermic because their body temperature is
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Vraag 29 Verslag
Bacteria which derive energy for food synthesis by oxidizing certain inorganic compounds are said to be
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Vraag 30 Verslag
In the nucleus of a cell, the thread-like structure in which genes are embedded is
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Vraag 32 Verslag
Oxygenated blood from the lungs is carried to the left atrium of the heart through the
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Vraag 33 Verslag
Which part of Euglena performs a similar function to that of the oral groove in paramecium?
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Vraag 34 Verslag
Which process best explains the raising upward and outward of the ribs during breathing?
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Vraag 35 Verslag
Which is NOT a viral disease?
Vraag 36 Verslag
Which reagent is used to test for the presence of starch in a food substance?
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Vraag 39 Verslag
The remains impressions of animals and plants preserved in rocks are referred to as
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Vraag 41 Verslag
The sum total of all the roles an organism plays in a habitat is referred to as its
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Vraag 42 Verslag
An example of a disease linked to the sex-chromosome is
Vraag 43 Verslag
Use the data to answer this question
A class of 40 set out to determine the population of lizards in a bound field measuring 200 metres by 100 metres using the capture-recapture method.
In their first outing, the students captured a total of 360 lizards all of which were marked with indelible ink and then released back into the field.
After a one week interval the students went back into the field and caught a total of 250 lizards out of which 150 bore the indelible ink mark.
The population density of the lizards in the field is?
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