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56 Cards in this Set

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Cell division is what?

Process by which a cell divides into two new cells

Living things grow by

Producing more cells not because each cell increases in size

Repair of

Damaged tissue

If the cell gets too big it cannot get enough

Nutrients into the cell and waste out of the cell

The original cell is called the

Parent cell

The two new cells are called

Daughter cells

Before cell division occurs the cell replicates all of its DNA so each daughter cell gets

Complete set of genetic information from parent cell

Each daughter cell is exactly like the parents

Same kind a number of chromosomes as the original cell

Many organisms especially unicellular organisms reproduce by means of cell division called

Asexual reproduction


Example bacteria

DNA is located in the

Nucleus and controls all cell activities including cell division

Long and threadlike DNA in a non-dividing cell is called

Chromatin

Double coiled short DNA and a dividing cell is called

Chromosomes

DNA consist of what two parts

Chromatid and centromere

Two identical sister chromatids attached at an area in the middle are called

Centromere

One cell divides sister

Chromatid separate and one ghost each new cell

Why does DNA need to change chromatin to chromosome

More efficient division

Every organism has its own

Specific number of chromosomes

How many chromosomes do humans have

46

All somatic cells and organisms have the same

Kind and number of chromosomes

What does somatic mean

Body

The cell cycle is a

Series of events selves go through as they grow and divide

So gross prepares for division then

Divides to form two daughter cells each of which then begins the cycle again

Sell cycles have checkpoints which telesales when it is time to

Divide

The interphase is

Is the period of cell growth and development

What occurs during interphase

DNA replication

During interphase the cell also grows carries out

Normal cell activities replicate all other organelles

The cell spends most of its life cycle in

Interphase

Interphase is divided into what three phases

G1 is cells increase in size and synthesize new proteins and organelles


S is synthesis of DNA or DNA replication


G2 is organelles and molecules required for cell division are produced

What is mitosis

The division of the nucleus into two nuclei each with the same number of chromosomes

Mitosis occurs in

All the somatic cells

Why does mitosis occurs

So each new daughter cell has a nucleus with the complete set of chromosomes

What is PMAT

P is Prophase


M is Metaphase


A is Anaphase


T is Telophase

What is cytokinesis

The division of the rest of the cell after the nucleus divides

Animal cells the

Cytoplasm pinches in

Plant cells a

Cell plate forms

After mitosis and cytokinesis the cell returns to

Interphase to continue to grow and perform regular cell activities

When cells become old or damaged

Die and are replaced with new cells

DNA controls all cell activities including

Cell division

Some cells lose their ability to

Control their rate of cell division the DNA of the cells become damaged or mutated

These super dividing cells form

Masses called tumors

Benign tumors are

Not cancerous the cells do not spread to other parts of the body

Malignant tumors are

Cancerous the cells break loose and can invade and destroy healthy tissues in other parts of the body this is also called metastasis

What are the stages of cell cycle

1. Interphase


2. Mitosis


P-nuclear envelope disappears chromosomes coil up


M-line up in the middle


A-chromosomes split go opposite sides and nuclear envelope reappears


T-the cell begins to split into


two


3.cytokinesis chromosomes back to chromatin division of the rest of the cell cytoplasm and organelles

DNA is wrapped tightly around histones and coiled tightly to

Form chromosomes

DNA and RNA are examples of which type of biomolecule

nucleic acid

DNA is made up of repeating molecules called

Nucleotides

Nucleotide consists of three different

Phosphate sugar and nitrogenous base

DNAs structure is called

A double helix

The double helix structure was discovered by three

Rosalind Franklin


Watson and Crick


Frederick Griffith

Apples are tasty and cookies are good

What are the specific parents between the nitrogen bases

Adenine with Thymine


Cytosine with Guanine

DNA was made of two long strands of nucleotides arranged in a specific way called the

Complementary rule

What are the purines

Adenine and guanine

What are the pyrimidines

Thymine and Cytosine

Nitrogenous base is always connected to

A phosphate and sugar deoxyribose

Their amounts in a given DNA molecule will be

About the same

Complementary nitrogen bases pair up and connect via

Hydrogen bonds