Science Flashcards

0
Q

A fossil made of hardened minerals in the shape on the original organism or one of its parts called an

A

Cast

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1
Q

What is considered a scientific theory

A

Evolution

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2
Q

What was Charles darwins job on the beagle

A

Learn about living things he saw and studied on his voyage

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3
Q

What is used by scientist to determine the evolution relationships

A

Order of amino acid in a protein

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4
Q

The technique that allows scientists to determine the actual age of a follow is called what

A

Absolute dating

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5
Q

An adaption is any trait that helps an organism

A

Survive and reproduce

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6
Q

Most fossils form when they become buried in what

A

Sediment

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7
Q

One of the main ways by which species form is through

A

Geographic isolation

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8
Q

A species is a group of similar organisms that can

A

Mate reproduce fertile offspring

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9
Q

Absolute dating of fossils depends on the decay of

A

Radio active elements

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10
Q

A diagram that shows how different groups of organisms Re related are called

A

Branching tree

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11
Q

The ____ of a radioactive element is the time that takes for half of the atom in a sample to decay

A

Half-life

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12
Q

Evolution occurs by means of a process called

A

Natural selection

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13
Q

Who is the author of the origin of species

A

Charles Darwin

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14
Q

Any difference b/w individuals of the same species is called variation
True or false

A

True

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15
Q

The millions of follis that scientists have collected make up the follis record True or False

A

True

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16
Q

Only traits that are learned can be acted upon by natural selection
True or False

A

False inherited

17
Q

Related species have similar body structures bc they inherited the same genes from a common offspring True or False

A

False ancestor

18
Q

When a hard part of an organism buried in sediment dissolves and levels an empty space, the result is called a cast.
True or False

A

Mold

19
Q

What is a type of protein that speeds up a chemical reaction in a living cell called

A

Enzyme

20
Q

What is the process by which a cell captures the energy in sunlight and makes it into food

A

Photosynthesis

21
Q

The different forms of a gene are referred to as

A

Alleles

22
Q

A genetic disorder in which a persons blood clots very slowly or not at all is called

A

Hemophilia

23
Q

a ______ is a group of similar organism that can mate w/ each other and produce fertile offspring

A

Species

24
Q

_____ are the basic units of structures and function in living things

A

Cells

25
Q

The storage are of a cell is called

A

Vacuole

26
Q

____ is the process by which cells “withdraw” energy from glucose

A

Respiration

27
Q

In _____ the alleles are neither dominant nor recessive

A

Codoninance

28
Q

The first stage of the cell cycle is

A

Interphase

29
Q

____RNA copies the coded messages from the DNA in the nicles and carries it to the cytoplasm

A

Messengers

30
Q

Three or more forms of a gene that code for single trait are called __

A

Multiple alleles

31
Q

_____ is the process of selecting a few organisms w/ de straits to serve as parents of the next generation

A

Selective breeding

32
Q

Scientists use ___ dating to determine which of two fossils is older

A

Relating

33
Q

Similar structures that related species inherited from a common ancestor are called _____ structures

A

Homozygous structures

34
Q

A species is ______ if no members of that species are still alive

A

Extinct

35
Q

Active transport is the process by which water passes through a selectively permeable membrane
True or False

A

False osmosis

36
Q

Anton van Leeuwenhoek Was the first scientist to see tiny living things through a microscope
True or False

A

True

37
Q

Meiosis is the process by which the number of chromosomes is reduced by half to form to from sex cells.
True or False

A

True

38
Q

A carrier is a person who has One recessive and one dominant allele for a trait
True or False

A

True

39
Q

A karyotype is a diagram that shows how scientist think different groups of organisms are related
True or False

A

False pedigree