Last 3 lessons Flashcards

Health and disease, Man and environment, Inheritance- Chromosomes and genes

1
Q

When do chromosomes appear under the microscope ?

A

during cell division

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2
Q

T/F
Chromosomes are filamentous

A

True

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3
Q

When is the chromosome the longest and when is it the shortest ?

A

1) Longest–> Interphase
2) Shortest–> Anaphase

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4
Q

Where is the location of alleles ?

A

On the same locus on homologous chromosomes

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5
Q

What is active immunity ?

A

WIt’s when you make your own antibodies.

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6
Q

2 examples from which you aqquire passive immunity

A

1)Breast milk
2)Gamma Globulin shot

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7
Q

Another name for the 1)First-line defense
2)Second-line defense
3)Third-line defense

A

1)Innate
2)Inflammatory response
3)Specific Immune repsonse

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8
Q

What makes up lymph ?

A

WBC, proteins, fat

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9
Q

What makes up the immune system

A

1)WBC
2)Bone Marrow
3)Lymph nodes
4)Spleen
5)Tonsils
6)Thymus

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10
Q

What are the 6 levels of organization ?

A

1)Biosphere
2)Biome
3)Ecosystem
4)Community
5)Population
6)Organisims

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11
Q

What is the global sum of all ecosystems ?

A

Biosphere

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12
Q

What is the biotic part of ecosystems ?

A

Community

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13
Q

What are the growth rate formulas ?

A

1) b-d=r
2) (b+i)-(d+e)=r

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14
Q

What factor slows down population growth as it reaches carrying capacity ?

A

Density dependent factors

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15
Q

Can 2 species share the same niche/habitat ?

A

No

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16
Q

What happens when 2 species share the same niche ?

A

Competetive exclusion principle

17
Q

What are the limting factors of aquatice biomes ?

A

Sunlight and O2&nutrient concentration.

18
Q

What are the limiting factors of Terrestial biomes ?

A

Temprature and moisture

19
Q

What are the limiting factors of Terrestial biomes ?

A

Temprature and moisture

20
Q

What do nektons feed one ?

A

Other nektons and planktons

21
Q

What zone do nektons level in ?

A

Photic and Aphotic

22
Q

Which aquatic organism is a decomposer ?

A

Benthos

23
Q

Biodiveristy increases from — to —-.

A

Poles to the equator