science study guide 2 Flashcards
What is the movement of molecules from a high concentration to a low concentration?
Diffusion
What is the mane given to the movement of water from a high concentration to a low concentration?
Osmosis
Which organelle controls the cell,and contains the genetic information?
The nucleus
Which organelle modifies,packages and distributes materials through the cell?
Golgi Apparatus
What is the passing of traits from parent to offspring?
Heredity
What is the study of Heredity?
Genetics
what is the name given to traits that are usually hidden?
Recessive
What is the name given to traits that show up when present?
Dominant
What is the name given to different forms of a gene?
Alleles
What is the name given to a quality that can be passed from one generation to the next?
Trait
Two identical alleles for a trait are know as?
Homozygous
Two different alleles for a trait are know as?
Heterozygous
Who is the fater of genetics?
Mendel
The genetic makeup of an organism is known as?
Genotype
The physical characteristics of an organism are known as?
Phenotype
List an exaple of a heterozygous genotype.
Hh
List an example of a homozygous genotype.
HH
Brown eyes are dominat (B) to blue eyes (b).Cross a herterozygous brown eyed person with a blue eyed person. What is the chance their childern will have brown eyes?
50%
Who discovered the structure of DNA?
Watson and Crick
How did they describe the structure of DNA?
A double ladder or a double helix
What sugar makes up DNA?
Deoxyibose
What sugar makes up RNA?
Ribosomes
List the 4 bases of DNA?
Adenine,Cytosine,Guanine,And Thymine
List the 4 bases of RNA?
Adenine,Cytosine,Guanine,Uracil
