Module 2 Cellular Functions
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Considered as the control center of the cell. It is where the genetic material is found which serves as the blueprint of every organism.
Nucleus
____ contains the instructions of growth and development in humans and all living things It is packaged into ____ that contain all our ____ It also stands for ___ and contains chains of (4)
DNA Chromosomes Genes DeoxyriboNucleic Acid Adenine Guanine Thymine Cytosine
Instructions for making proteins which do the work within the cell and body
Genes
Humans genetic information, also known as ___ can be described as the ____ It can be thought that it has two volumes with one volume each from the parents Each volume contains ___ chapters each, equivalent to the amount of chromosomes in human body cells Each chapter has recipe pages (Coding DNA or genes ____) and in-between pages (non-coding _____) which still has various jobs we don’t understand All words are made up of ____ letters with an alphabet of ____ letters
Genome Book of Life 23 Exons Introns 3 4
Which genes are turned on or off can be influenced by (5)
diet chemical exposure exercise aging messages from other genes
The Book of Life Genetic Terminology Volume 1&2 Chapters Pages Words Letters Spelling Mistakes
Volume 1&2 Genomes Chapters Chromosomes Pages Genes Words Triplet Code Letters ATCG Spelling Mistakes Genetci Variant
Chromosomes are found in the nucleus of all body cells except for ___ which have no nucleus and therefore do not contain chromosomes However, abnother place DNA can be found is the ____ (the energy centres of the cell) found scattered outside the nucleus. It is much smaller and has very little ____ DNA
Red blood cells Mitochondria Non-coding
In ____ chromosomes, long stretches of ___nm chromatin loop out from extended scaffolds In ____ chromosomes, the scaffold is folded further into highly compacted structure
Interphase 30 nm Metaphase
Chromosomes: ____ chromosomes are highly condensed structures composed of DNA and Protein, only visible during ____ or ____
Eukaryotic chromosomes Mitosis Meiosis
Shows all the chromosomes in a human being These chromosomes are stained with special dyes to produce distinctive banding patterns and lined up in size order Chromosome number 1 being the ____ and Chromosome number 22 being the ___ These numbered chromosomes are called ____ The chromosomes labelled either X or Y are the ___ which determine if the chromosomes come from a male or female
karyotype Largest Smallest Autosomes Sex Chromosomes
Each of the beads on a string is called a ____, thousands of which make up each chromosome These are found in relative locations called ____ in eukaryotic chromosomes
gene Loci
True or False: The copies of the chromosome make up half of one gene, thus if one part broke, the rest would follow.
False. each one holds its own copy of a gene except sex chromosomes
True or False: Both X Chromosomes need to be activated in a woman.
False, only one X chromosome is activated. In males, a Y chromosome only has few genes
There are over ____ genes found in the DNA of each person. The genes on a chromosome and the non-coding DNA make up the ___ A chromosome consists of two DNA chains running in opposite directions. The ___ form the rungs of a ladder and the ladder is twisted to form a ____.
20 000 Genome bases double helix
Roughly ___ of these base pairs of DNA make up the human genome Each ____ tells the cell to produce a particular ____, the building blocks of proteins. the sequence helps produce them in the correct order Only ___ of the entire DNA in the human cell is made up of genes that contain the information codes for making proteins The rest of the DNA used to be called ___ as they do not contain info for proteins. They separate genes from each other in chromosomes and are likely to have a role in turning genes on and off. Thus, having control in the function within a genome.
3 billion triplet amino acid 1% Junk DNA
Adenine pairs with ____ Guanine pairs with ____
Thymine Cytosine
Nucleotide bases goes missing ____ Nucleotide bases are added ____
Deletion Insertion
DNA variations can occur during our life due to reasons including (4) The most common causes of genetic variation is ____
radiation chemicals Chance Other unknown Factors Aging
Gene variations that do not have any impact on our health are called ____ or ____ Gene variations that makes it faulty is called a _____ or ____. This is why having two copies of a gene is important.
Neutral variants Polymorphisms Pahtogenic variant Mutation
When a new gene variation arises in an egg or sperm cell this is called a ____ The person arising from that egg or sperm will be the first in their family to have that DNA change
de novo change
During the ____ portion of the eukaryotic cell cycle, chromosomes de-condense to ___ a less organized form of protein-associated DNA in the nucleus
Interphase Chromatin
In bacterial ____ it was first revealed that a bacterial chromosome was just a small closed, naked ____ DNA double helix
gene mapping circular
____ is the gatekeeper of gene activity, very different from its counterpart
Eukaryotic chromatin
Two types of Chromatin More dispersed, less condensed, associated with fewer proteins More condensed, associated with more proteins. The ___ is a special case of it.
Euchromatin Heterochromatin Nucleolus