Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Protein Synthesis+ Selection > Biodiversity > Flashcards

Biodiversity Flashcards

1
Q

Biodiversity

A

Number of species and the number of individuals of each of the species within a community

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

Species richness

A

The number of different species in community

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

Community

A

All the individuals of all the species living together in the same area at the same time

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

Genetic diversity

A

Difference in dna

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

Species

A

Group of similar organism
That reproduce to produce fertile offspring

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Niche

A

Organism role within ecosystem
Refers to how they behave and interact with environment and other species

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What information required to calculate an index of diversity

A

Number of species
Number of individuals of each species

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

Diversity index

A

N(N-1
————
Σn(n-1)

N= total number of organisms of all species
n=total number of organism of each species

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

The number of species present is one way to measure diversity. Explain why an index of diversity may be a more useful measure

A

Measures the number of individuals of each species
Some
Species present in high numbers

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

Economic argument for maintaining biodiversity

A

Medical uses
Tourism
Agriculture

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

Forest cleared
Why does species diversity decrease

A

Decrease in variety of plants
Fewer habitats and niches
Decrease in variety of food sources
Fewer herbivores+carnivores

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

When writing species name must be underlined

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

Suggest how the scientist measured the rate of water flow in the river.

A

Time to fill container of known volume

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

Give ways in which genetic diversity between species is measured

A

•Comparing differences in the base sequence of dna/mrna
• comparing observable characteristics
• comparing amino acid sequences

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

Explain the advantage of showing the data using standard deviations rather than ranges

A

SD is spread of data around the mean;

Accept: variation around the mean.

  1. (SD) reduces effect of anomalies/ outliers;
  2. (SD) can be used to determine if (difference in results is) significant/not significant/due to chance /not due to chance;
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Domain split into what organims

A

Bacteria
Archaea (prokaryotes)
Eukarya

17
Q

Hierachy

A

Groups are within larger groups
No overlap

18
Q

Phylogenetic group

A

Grouped according to evolutionary links

19
Q

Is courtship behaviour genetically determined or no

A

It is genetically determined

20
Q

Give 2 ways in which courtship increases probability of successful mating

A

Attracts same species
Attracts opposite sex
Indication of sexual maturity
Stimulates release of gametes
Forms pair bond

21
Q

Modern classification methods

A

Comparing
Base sequence of DNA
base sequence of mRNA
Amino acid sequence
Measurable+observable characteristics

22
Q

Why may it be difficult to sometimes decide which species an organism belongs to

A

Can’t always observe reproductive behaviour as
They are extinct
Produce asexually
Ethical issues

23
Q

Why does comparing the base sequence of a gene provide more info than amino acid sequence

A

Longer base sequence than amino acid sequence
Introns
Dna code degenerate

24
Q

Species diversity

A

Number of species in a community

25
Q

Give 2 reasons why the grassy strips increase the biodiversity of animals

A

Increase in plant diversity leads to more types of food for animals
Increase in variety of animals leads to increase in predator species
Increase in habitat and niches

26
Q

Scientists decided to collect animals from the soil samples for 40minutes
Suggest how they decided 40mins best time

A

Repeat soil sorting for different times and record hoe many species present
Then find optimum
Time

27
Q

How to identify which species belonged to which

A

Use a key

28
Q

Suggest and explain 2 ways in which scientists could improve method used for days collection

A

Count number of individuals of each species to calculate index of diversity

Collect from more sites/years to increase the accuracy

29
Q

Suggest and explain one advantage and one disadvantage to a farmer of replanting hedges

A

Advantage
Greater biodiversity so increase in predators of pests

Disadvantage
Greater biodiversity so Increase in pest population

30
Q

Define non coding base sequences
And where they are positioned

A

Dna that does not code for protein
Positioned between genes

31
Q

Give 2 ways other than comparing base sequence of DNA/mRNA to measure genetic diversity

A

Compare observable characteristics
Compare amino acid sequence

Protein Synthesis+ Selection (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions