Part 1 - Diversity And Uniformity Of Life Flashcards
What are the similarities between a plant and a human on a cellular level?
Both have a selectively permeable membrane
Both has a nucleus with a nuclear membrane containing DNA which hold the genetic information
Both contain organelles such as mitochondria, endoplasmic reticulum and ribosomes in a cytosol
What are the differences between humans and plants on a cellular level?
Plants have a fixed rectangular shaped cell due to the presence of cellulose in the cell wall
Plant cells contain chloroplasts
What does ‘compare’ mean when answering a scientific question?
Emphasis similarities
What does ‘contrast’ means in a scientific question?
Emphasis differences
What is the difference between qualitative and quantitive date?
Qualitative date is descriptive and can be observed, but it is not measured
Quantitive data is data that can be measured, it involves objective descriptive of quantities and gives rise to a numerical description
How would you define growth?
Growth is an increase in the number of cells over time
Are all things that grow alive?
Not necessarily consider and ice crystal, it grows as long as their is water and the right environment it will continue to grow
Define the term ‘hereditary’?
An organisms ability to pass characteristics from one generation to the next from parent to child, from tree to seedling, from butterfly to caterpillar, from yeast to daughter cells
What were the two different kinds of reproduction you encountered in topic 2?
Asexual and
Sexual reproduction
What is asexual reproduction?
Where only one parent is required and all offspring are genetically identical
What is sexual reproduction?
Where male and female gametes combine, meaning half he offsprings genes have come from the ‘father’ and half from the ‘mother’. Forming a unique individual
Which of the body’s macromolecules are responsible for storing hereditary information about an organisms traits and where it is found?
Heritable information about an organisms traits are stored as DNA in the nucleus
Describe the structure of DNA?
Double helix
With 2 long strands that form a ladder like structure
What bonds impart stability to the whole structure and bases of DNA?
Hydrogen bonds
What lye between the 2 stands in the structure of DNA?
Bases
That act as building blocks
They always match up in a particular fashion
And can be in any order
What are the 4 type of bases in a DNA helix?
Adenine
Thymine
Cytosine
Guanine
In double standard DNA what does the base thymine always pair up with?
Adenine