Bio - Part 2 | 暗記メーカー

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Regulates the size of organs, controls light entering the ye, under involuntary control

smooth muscle

Pumps the blood and under involuntary conteol

cardiac muscle

Responsible for coordinating and controlling many bodily activities

nervous tissue

Body Cell is also called as ________

Somatic cell

sex cell is also called as ______

reproductive cell

How many cell is in the Body cell or somatic cell

How many cell is in the Sex cell or reproductive cell

In somatic cell Labelled = In humans 2n =

- 2n - 46 chromosomes

Types of cell division where single cell decides twice and produce four daughter cell with haft the amount of genetic material (sex cells)

Meiosis

Homologous chromosomes crossing over

prophase 1

The chromosomes align in pairs in the centre of the cell

metaphase 1

Chromosomes pairs seperated and move to opposite end of the cell

anaphase 1

Two new nuclei form around each set of chromosomes

telophase 1

Prophase 2

phase 2 happens to allow 4 haploid sex cells sperm and egg cell to be created

Chromosomes align single file in the centre of the cell

metaphase 2

Sister chromatids seperate and move to opposite end of the cell

anaphase 2

Four new nuclei form around each set of chromosomes

telophase 2

process of mitosis

interphase - prophase - metaphase - anaphase - telophase - cytokinesis

The biological process by which new individuals

reproduction

Are produced from their parents or parents

offspring

Life of a cell from the time it is first formed during division of a parents cell until its own division into two daughter cell

cell cycle

Regulated at certain checkpoint by both internal and external signal

cell cycle control system

Process where a single parents cell decides to make two identical daughter cell

mitosis

Undergo mitosis to reproduce asexuality

unicellular organism

Undergo mitosis to create new cells for growth and repair old cells

multicellular organism

Stage of mitosis

Chromosomes (genetic material) condense and the nuclulos disappear

Microtubules extending from each centrosome can now invade the nuclear area

prometaphase

Chromosomes align in the centre of the cell and attach to microtubules in preparation to split apart

metaphase

Chromatids separate and move to opposite end of the cell

anaphase

The cytoplsm of the parents cell splits to form two indentical daughters

cytokinesis

The cell grows and copies it's DNA

Interphase

The cell divides it DNA and cytoplasm, forming two new cells

Mitosis

G1 phase

cell growth

S phase

DNA synthesis

G2 phase

more growth, preparation for mitosis

Resting state where the cell performs it's function and is not preparing to divide

Duplication of chromosomes

S phase

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