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Science > science study guide 2 > Flashcards

science study guide 2 Flashcards

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Biology 101 flashcards
1
Q

What is the movement of molecules from a high concentration to a low concentration?

A

Diffusion

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2
Q

What is the mane given to the movement of water from a high concentration to a low concentration?

A

Osmosis

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3
Q

Which organelle controls the cell,and contains the genetic information?

A

The nucleus

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4
Q

Which organelle modifies,packages and distributes materials through the cell?

A

Golgi Apparatus

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5
Q

What is the passing of traits from parent to offspring?

A

Heredity

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6
Q

What is the study of Heredity?

A

Genetics

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7
Q

what is the name given to traits that are usually hidden?

A

Recessive

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8
Q

What is the name given to traits that show up when present?

A

Dominant

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9
Q

What is the name given to different forms of a gene?

A

Alleles

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10
Q

What is the name given to a quality that can be passed from one generation to the next?

A

Trait

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11
Q

Two identical alleles for a trait are know as?

A

Homozygous

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12
Q

Two different alleles for a trait are know as?

A

Heterozygous

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13
Q

Who is the fater of genetics?

A

Mendel

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14
Q

The genetic makeup of an organism is known as?

A

Genotype

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15
Q

The physical characteristics of an organism are known as?

A

Phenotype

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16
Q

List an exaple of a heterozygous genotype.

A

Hh

17
Q

List an example of a homozygous genotype.

A

HH

18
Q

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?

A

50%

19
Q

Who discovered the structure of DNA?

A

Watson and Crick

20
Q

How did they describe the structure of DNA?

A

A double ladder or a double helix

21
Q

What sugar makes up DNA?

A

Deoxyibose

22
Q

What sugar makes up RNA?

A

Ribosomes

23
Q

List the 4 bases of DNA?

A

Adenine,Cytosine,Guanine,And Thymine

24
Q

List the 4 bases of RNA?

A

Adenine,Cytosine,Guanine,Uracil

25
Q

What is it called when DNA makes a copy of itself?

A

Replication

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