Sexual and Asexual Reproduction
What is the name of the female gametes?
Ovum
How many sperm cells are necessary to fertilize an egg cell?
One
What detail makes DNA so special?
It is unique to each individual, like a fingerprint.
Give two examples of the effect of plate tectonics movements.
Earthquaks and Volcanic eruptions.
How do sedimentary rocks change into metamorphic rocks?
The heat of the magma combined with the huge pressure of all of the layers of rocks above can cause the sedimentary rocks at the bottom to be chemically changed into metamorphic rocks.
What is the name of the male gametes?
Sperm
What are the three internal organs that compound male reproductive system?
Sperm duct, prostate gland, seminal vesicles.
How many genes do humans have?
20.000 genes.
What is the border of several plates?
The Mid-Atlantic Ridge.
How do Igneous rocks form?
Igneous rocks form when magma (molten rock) cools and crystallizes,
How many genes exist in humans?
20 thousand different genes
How frequently do ovaries release egg cells?
Once a month.
How many Chromosomes do we have?
46/half from dad and another half from mom.
Name the three different plate tectonics movements.
Convergent, Divergent and Transform.
Name the three main type of rocks.
Igneous, Sedimentary and Metamorphic.
What type of reproduction produces more genetic variety?
Sexual Reproduction
How many eggs does a woman's body make every year?
None, females are born with all of their egg cells.
What are the phases of the cell cycle?
Interphase, M phase and Cell cycle exit.
Name three types of mountains.
Fault-Block mountains, Upward mountains and Volcanic mountains.
What two factors affect metamorphic rocks formation?
Heat and pressure.
What two gametes are needed for fertilization?
Ovum and sperm.
Why are testes located outside the body?
Because the male reproductive system makes more sperm than it needs to fertilize egg cells.
What are the four stages of mitosis?
Prophase, metaphase, anaphase, and telophase.
What type of mountains convergent movement form? Give an example
Fold mountains/Himalayas
What type of rock is marble?
Metamorphic rock.