There are approximately 100 trillion (10 14 ) cells in the human body! jaascar.com wikipedia.
SNC2D. By the age of 20, how many cells make up our bodies? 100 trillion cells.
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Transcript of SNC2D. By the age of 20, how many cells make up our bodies? 100 trillion cells.
SNC2D
Review of Mitosis
By the age of 20, how many cells make up our bodies?
Question 1:
100 trillion cells
What does DNA stand for?
Question 2:
Deoxyribonucleic acid
What happens during Metaphase?
Question 3:
Paired chromosomes align in the middle of the cell
Two identical cells are formed in this stage of mitosis
Question 4:
Cytokinesis
Paired chromosomes are attached at this spot
Question 5:
centromere
Chromosomes separate and move to opposite ends of the cell
Question 6:
Anaphase
Spindle fibers break down and chromosomes lose their shape during this phase
Question 7:
Telephase
What term matches the following definition..Long piece of coiled DNA and proteins
Question 8:
Chromosome
List 3 life processes of the cell
Question 9:
Growth, movement, reproductionCould also include: waste
removal, exchange of gases, intake of nutrients, etc.
What is the largest zoom on the objective lens using our compound microscopes in class?
Question 10:
40x
If the power of the objective lens is 40 times, and the power of the ocular lens is 10x, what is the power of the microscope?
Question 11:
400x
What are the stages during mitosis and which one takes the longest time? Explain your reasoning.
Question 12:
Prophase, Metaphase, Anaphase, Telephase, CytokinesisProphase takes the longest time
because it has two phases – more happens during prophase than any other phase of mitosis
List two differences between plants and animal cells
Question 13:
Plant cells have larger vacuolePlant cells contain chloroplastPlants contain cell wallsAnimal cells have centriolesAnimals cells have specialized
compounds
I am a jelly-like substance that fills the cell and surround the organelles. I also contain nutrients required by the cell to carry on its life process. What am I?
Question 14:
cytoplasm
Which organelle is filled with enzymes?
Question 15:
Lysosome
What is photosynthesis?
Question 16:
Plants use energy from the Sun to convert carbon dioxide and water into sugar and oxygen
Eyeball is to human as ____________ is to microscope
Question 17:
Ocular lens
Why are fluorescent substances added to cells when using the compound microscope?
Question 18:
When cells are placed in UV light the fluorescent substance will glow, making the parts of the cell more visible.
To improve contrast between parts of the cell and its background
Blueprint is to building as _________ is to a cell
Question 19:
DNA
What acronym could be used to remember the phases of mitosis
Question 20:
Backwards sTAMP
How long does the cell stay in Interphase?
Question 21:
90% of the time
Name one of the scientists who discovered that DNA was in a double-helix shape.
Question 22 (Period 2 only):
James Watson and Francis Crick – wrote paperMaurice Wilkins – helped with discovery
What three stages occur during Interphase?
Question 23:
Cell growth, DNA replication and preparation for Mitosis
T F The mitochondria is the control centre of the cell
FALSE - nucleus
Question 24:
Name a specialized compound that an animal contains
Cholesterol, red and white blood cells, insulin, taste buds – lots more!
Question 25:
Question 26: Correct these statements:
The golgi apparatus is the powerhouse of the cellTelephase is the last stage of mitosis
mitochondria cytokinesis
Question 27: Put the stages of mitosis in order
Metaphone, Early prophase, interphase, late prophase, telephase, cytokinesis, anaphase
Early prophase, late prophase, metaphase, anaphase, telephase, cytokinesis
Question 28: What is a chromosome?
Coiled DNA
Question 29: What happens to the cell when it does not go
through apoptosis.
In turns into cancer cells and keeps spreading
Question 30: What environmental factors can contribute to
mutated cells? What can these factors lead to? Factors can include smoking, the
SUN, inhaling toxic chemicals, etc.These factors can lead to various
types of Cancer
Question 31: What would happen if our vacuoles stopped
working in our cells?
The bodily functions require water in our system would cease functioning (cells cannot obtain water)
Question 32: Mr. ________ was found killing crippled people
around Nucleus Town. He was filled with dirty enzyme thoughts. Who did it?
Mr. Lysosome