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BIOL1003 > Ch. 1-4: Exam 1 > Flashcards

Ch. 1-4: Exam 1 Flashcards

1
Q

Individuals with traits best suited to the local environment that are more likely to survive and leave the greatest number of healthy offspring are called

A

Natural selection

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2
Q

A __ is a comprehensive and well-substantiated explanation, much broader in scope than a hypothesis

A

Theory

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3
Q

What is an independent variable?

A

What is being manipulated by the researchers

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4
Q

The __ is the response, output, or effect under investigation that is used to judge the outcome of the experiment

A

Dependent variable

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5
Q

An experiment in which neither the participant nor the experimenter knows which group is the control group is called a

A

Double-blind experiment

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6
Q

__ is any field of study that is falsely presented as having a scientific basis

A

Pseudoscience

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7
Q

Recorded observations are called

A

Data

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8
Q

A __ is a piece of information considered to be objectively true based on all current evidence

A

Fact

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9
Q

What is the scientific study of life?

A

Biology

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10
Q

The __ lacks or does not receive the specific factor being tested

A

Control group

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11
Q

How many naturally occurring elements are essential to humans

A

25

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12
Q

Anything that occupies space and has mass is called

A

Matter

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13
Q

A measure of the amount of material in an object is called

A

Mass

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14
Q

This subatomic particle has a positive charge

A

Proton

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15
Q

This subatomic particle has no charge

A

Neutron

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16
Q

__ have the same number of protons, but a different number of neutrons

A

Isotopes

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17
Q

__ are formed between oppositely charged ions

A

Ionic bonds

18
Q

What are reactants in a chemical reaction

A

The starting materials

19
Q

A __ is the smallest unit of matter that still retains the properties of an element

A

Atom

20
Q

This type of bond gives water high surface tension

A

Hydrogen bonds

21
Q

All living things are composed of cells and all cells come from earlier cells

A

Cell theory

22
Q

Organisms of the domains bacteria and archaea

A

Prokaryotic cells

23
Q

Organisms of the domain eukarya

A

Eukaryotic cells

24
Q

The site where the components of ribosomes are made

A

Nucleolus

25
Q

A membrane-enclosed sac of digestive enzymes found in animal cells

A

Lysosome

26
Q

Which of the following is not a cytoskeletal fiber

A

Microcilia

27
Q

The conversion of light energy from the sun to the chemical energy of sugar and other organic molecules is called what

A

Photosynthesis

28
Q

This organelle contributes the most power to plant cells

A

Chloroplasts

29
Q

The plasma membrane is called a fluid mosaic model because of the diversity of proteins in the membrane and how the molecules move freely past one another

A

True

30
Q

DNA transfers its coded information to transfer RNA (tRNA)

A

False

31
Q

Which of the following organelles is not part of the endomembrane system

A

Nucleus

32
Q

What are genes composed of

A

DNA

33
Q

What are the four most common elements found in living organisms

A

Carbon, oxygen, nitrogen, and hydrogen

34
Q

What is the function of the golgi apparatus

A

Receives, modifies, stores, and distributes cells products

35
Q

Calciums atomic mass is 40 and its atomic number is 20. How many protons are found in a calcium atom

A

20

36
Q

What name is given to substances that resist charges in PH

A

Buffers

37
Q

What structure is found in plant cells, but not animal cells

A

Cell wall

38
Q

A __ is an example of a producer

A

Tree

39
Q

Where does protein synthesis take place

A

The ribosomes

40
Q

Functions of the smooth ER include

A

Lipid synthesis and drug detoxification

41
Q

What type of bond does sulfuric acid have

A

Covalent

42
Q

What is the primary way by which energy leaves your body

A

Heat

BIOL1003 (5 decks)

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