SCIENCE TEST!!! Flashcards
LEARN LEARN LEARN LEARN (28 cards)
What is the main purpose of mitosis?
To grow and repair the body
What does genotype represent?
The genetic makeup of a organism
Which organ is last to develop?
The lungs
What is the main con of sexual reproduction?
Takes time and energy
Which structure produces sperm?
Testes
What is the main event in trimester 2?
The bones begin to harden
What type of reproduction involves a parent growing a extra piece on its body then it falls off to create a new individual?
Budding
When a worm is cut in half itgrows into two sepret worms. What is this reproduction called?
Fragmentation
What is the term for different variations of the same gene?
Alleles
What event marks the start of the first trimester?
The start of labour
What is a potential result of a nondisjunction in humans?
Chromosomal abnormalities
Which gland releases fluid to prepare the urethra for ejaculation?
Bulborethral glands
Which structure devolpes first in the embryo?
The brain and spinal chord
Where does fetilization occur?
the uterus
where does sex hormone production beging in both males and females?
The pituritary gland
What is the outcome of mitosis
Two genetically identical diploid cells
What is the function of the epididymis?
To store and mature sperm
which structure is responsible for producing eggs?
The ovaries
Which horomones does the mothers body release during labour?
Oxytocin and relaxin
What is the main focus of fetal development during his third trimester?
Growth and preparing for birth
The heart begins to beat in which trimester?
First
What is the main con of asexual reproduction?
No variation (One single flaw or virus can kill the whole species)
What is the outcome of Meiosis?
Four genetically different haploid cells
Whic of the following is not a component of cell theory?
All living things are made of cells.
Cells can arise spontaneously from non-living matter.
cells are the basic unit of life.
all cells come from prexising celss.
Cells can arise spontaneously from non-living matter
