Science Flashcards

1
Q

Abiotic

A

Non living

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Biotic

A

Living

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Troposphere

A
  • lowest region of the atmosphere
  • weather occurs here
  • temperature increases with altitude
  • absorbs infrared light
  • air is mixed well
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Stratosphere

A
  • temperature increases with altitude

- ozone is present at 25km and absorbs deadly uv rays

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Mesosphere

A
  • temperature decreases with altitude
  • 50km to 90km
  • layer where meteors burn up
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Thermosphere

A
  • first layer exposed heat of the sun
  • air is so thin that a small change in energy can cause a large temperature increase
  • auroras occur here
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Exosphere

A

Region where atoms/molecules escape into space. Upper limit of atmosphere

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Apparent

A

A comparison between earth and stars

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Absolute

A

A comparison between stars and stars

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Doppler Effect

A

The wave frequency of of an object is faster when moving towards you than when moving away

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Red Shift

A

Moving away

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Blue shift

A

Moving

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Light year

A

The distance light can travel in one year (10trillonkm)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Analogous Structure

A

Same purpose, different ancestor (butterfly and bat)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Homologous structure

A

Same structure, different function (human arm and bat wing)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Biodiversity

A

Factors that contribute to the selection variations, provides individuals with increased chance of survival over others

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Evolution

A

Change over time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Species diversity

A

The number of different species within an ecosystem

19
Q

Allele

A

Alternative forms of a gene for a certain characteristic

20
Q

Meiosis

A

Parents cell results in four unique cells (haploid)

21
Q

Speciation

A

Formation of a new species

22
Q

Genetic drift

A

Changes due to events such as floods, fires

23
Q

Selective agents

A

Different biotic and abiotic agents that influence survival

24
Q

Population

A

Group of individuals, same species that can interbreed

25
Natural selection
The unequal survival of organisms due to environmental factors that preserve favourable outcomes
26
Gene pool
Common group of all genes present in a population
27
Behavioural isolation
Capable of breeding but have different courtship rituals
28
Geographical isolation
Separated by geographic Barrie's such as rivers, mountains
29
Temporal isolation
2 or more species reproduce at the same time
30
Incomplete dominance
The combination of alleles is expressed (red+blue=purple)
31
Codominance
Both alleles are expressed fully
32
Mitosis
Parent cells is replicated twice
33
Autosomes
Non sex chromosomes
34
Trisomy
Three copies of a chromosome are made instead of two
35
Locus
Position occupied by a gene on a chromosome
36
Male
XY
37
Female
XX
38
Karyotype
Chart displaying chromosomes
39
What is in a nucleotide
Sugar, phosphate, base
40
Transcription
DNA is unzipped and mRNA is created
41
Translation
mRNA is read and amino acid chain is created, making a protein
42
Somatic cells
Every sell other than sex 46 chromosomes 2n=diploid Mitosis
43
Gametes
Sex cells Meiosis Haploid nxn=2n
44
Chargaffs rule
A-T | G-C