Chromosomes
What do chromosomes consist of?
Chromosomes consist of proteins and DNA molecules.
what is this phase? (photo)
anaphase
List the 5 stages of Mitosis.
Prophase, Metaphase, Anaphase and Telophase
Where is the DNA located?
Where are the Chromosomes located?
In the nucleus of each Cell.
definition of the cell cycle?
the cell cycle is a cycle of stages that cells pass through to allow them to divide and produce new cells. (individual answer)
Explain the two types of cell division and their functions
Mitosis: Is a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.
Mitosis: Is a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.
What is DNA?
-A molecule that contains the instructions an organism needs to develop, live and reproduce
-And the biological instructions that make each species unique
What are Gonosomes responsible for?
They define the gender. XX=female XY=male
"chromosomes are at complete opposite ends; new nuclei are formed on each side to make two new cells" which phase?
telophase
What is the importance of mitosis in a human being ?
This cell division process is important in the development of the embryo, growth and development of tissues and organs, and repair and replacement of damaged and old cells
What does DNA stand for?
desoxyribonucleic acid
How many autosomes are in a Human body?
You can find 22 autosomes in a human body
definition and biological function of mitosis?
definition: mitosis is the step in the cell cycle that the newly duplicated DNA is separated and two new cells are formed. (individual answer)
biological function: tissue repair, growth, reproductio, development
What are the differences between Meiosis 1 and Meiosis 2?
In meiosis I, homologous chromosomes separate, while in meiosis II, sister chromatids separate and Meiosis II produces 4 haploid daughter cells, whereas Meiosis I produces 2 diploid daughter cells.
Name the four bases
Adenin, Guanin, Cytosin, Thymin
What are the 46 Chromosomes called that you can find in a human body?
They are called haploids
explain the cell cycle (name all phases of the cell cycle and explain what happens at each phase).
prophase: chromosomes are condensing, thickening and visible
metaphase: chromatids line up in the middle of the cell; nucleus has been disassambled
anaphase: chromosomes move to opposite sides of the cell/ to the poles of the cell
telophase: chromosomes are at complete opposite ends; new nuclei are formed on each side to make two new cells
(individual answer)
Explain the difference between haploid and diploid.
The difference between Haploid and Diploid is the number of chromosome sets that are found in the nucleus. Haploid cells are those that have only a single set of chromosomes while diploid cells have two sets of chromosomes.
DNA is called the “blueprint of life” because
a) it is like a Fingerprint
B) it has blue colour
C) it contains the plans for building an organism
D) it can relay messages to other molecules
C) it contains the plans for building an organism