x
Info
x
Warning
x
Danger
 / 
 / 
 / 
11.Absolute dating uses ______ to estimate how old a fossil

Question : 11.Absolute dating uses ______ to estimate how old a fossil : 1775165

11.Absolute dating uses ______ to estimate how old a fossil is.

A.Depth within rock layers

B.Radioactive isotopes

C.A molecular clock

D.Structural features

E.Embryonic structures

12.If an isotope's half-life is 100 years:

A.That isotope will no longer exist in 50 years

B.That isotope will no longer exist in 200 years

C.In 50 years only half of the atoms in a sample of that isotope will remain

D.In 100 years only half of the atoms in a sample of that isotope will remain

E.In 200 years only half of the atoms in a sample of that isotope will remain

13.Carbon-14 is useful in determining the age of a fossil up to about:

A.40,000 years ago

B.10,000 years ago

C.20,000 years ago

D.50,000 years ago

E.100,000 years ago

14.Potassiam-40 is useful in determining the age of a fossil:

A.In samples less than 25,000 years of age

B.In samples less than 50,000 years of age

C.In samples 300,000 years of age and older

D.In samples aged between 50,000 and 100,000 years of age

E.In samples aged between 100,000 years and 250,000 years

15.Earth once consisted of a single large landmass and one ocean. The landmass is named:

A.Panthalassa

B.Pangaea

C.Laurasia

D.Gondwana

E.Ultima Continenta

16.Earth once consisted of a single large landmass and one ocean. The ocean is named:

A.Pangaea

B.Laurasia

C.Gondwana

D.Oceana

E.Panthalassa

17.If similarities between two structures in different organisms reflect common ancestry, these structures are:

A.Vestigial

B.Analogous

C.Homologous

D.Homeotic

E.Heterologous

18.If similarities between two structures in different organisms reflect independent evolution, these structures are:

A.Analogous

B.Vestigial

C.Homologous

D.Homeotic

E.Heterologous

19.If a structure has no apparent function in one species, yet is homologous to a functional organ in another species, this structure is termed:

A.Analogous

B.Homologous

C.Homeotic

D.Vestigial

E.Heterologous

20.A gene that, when mutated leads to organisms with structures in abnormal places, is termed:

A.Parsimonious

B.Homeotic

C.Homologous

D.Vestigial

E.Dominant

Solution
5 (1 Ratings )

Solved
Biology 1 Year Ago 200 Views
This Question has Been Answered!
Unlimited Access Free
Explore More than 2 Million+
  • Textbook Solutions
  • Flashcards
  • Homework Answers
  • Documents
Signup for Instant Access!
Ask an Expert
Our Experts can answer your tough homework and study questions
180472 Biology Questions Answered!
Post a Question