Chapter 1 Flashcards

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1
Q

What is Biology?

A

Scientific study of living things

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2
Q

Biology is derived from 2 greek words Bios and Logus, which each mean?

A

Bios means life and logus means science

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3
Q

What is the basic structural and functional unit of life?

A

Cells

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4
Q

Major difference between Prokaryotes and Eukaryotes?

A

Eukaryotes have a nucleus and Prokaryotes dont

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5
Q

What is a chromosome?

A

A structure that contains DNA

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6
Q

How are chromosomes lined up in Prokaryotes vs Eukaryotes?

A

Prokaryotes are lined up Circular while Eukaryotes are lined up Linear

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7
Q

What are Chromosomes composed of?

A

DNA and Proteins ( Histone for Eukaryotes and non-histone Prokaryotes)

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8
Q

What is DNA?

A

Molecule that carries genetic information for growth, development and reproduction

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9
Q

What is a gene?

A

Specific sequence of DNA that codes for a specific protein

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10
Q

Chromosomes are located in what organelle in a eukaryotic cell? Prokaryotic cell?

A

Eukaryotic cell is located in Nucleus and Prokaryotes are located in Nucleoid

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11
Q

What is transcription?

A

Synthesis of mRNA from DNA

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12
Q

What is translation?

A

Synthesis of Proteins from mRNA

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13
Q

What is the product of gene expression?

A

A new functional protein

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14
Q

The DNA structure is a?

A

Double Helix

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15
Q

Both strands run?

A

Antiparallel

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16
Q

What are the two major processes in the ecosystem?

A

Energy Flow and Chemical Cycling

17
Q

What is the major source of energy in the earth?

A

Sun

18
Q

During energy transformation, what energy is released?

A

ATP

19
Q

Explain Mutualism?

A

Both organism benefit from each other i.e. “mutual”

20
Q

Explain Commensalism?

A

One organism is benefited (commensal) and the other organism is not affected

21
Q

Explain Parasitism?

A

One organism is benefited (i.e. the parasite) and one organism is hurt (i.e. the host)

22
Q

What are the three Domains?

A

Bacteria, Archea, and Eukarya

23
Q

Which domains are unicellular or multicellular?

A

Bacteria are Unicellular, Archea are Unicellular, Eukarya Unicellular and Multicellular

24
Q

List the 4 Domain under Eukarya

A

Plantae, Animalia, Fungi, and Protista

25
Q

Which of the Domains under Eukarya are Multicellular and which are unicellular?

A

Plantae are Multicellular, Animalia are Multicellular, Fungi some Unicellular(Yeast) and the rest are mulitcellular, Protista are Unicellular.

26
Q

In Charles Darwin’s book, On the Origin of Species by Means of Natural Selection published in 1859 what are the two main points?

A

Species showed evidence of “descent with modification” from common ancestors and Natural selection is the mechanism behind “descent with modification”