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bio exam 1 > BIO STEPN! > Flashcards

BIO STEPN! Flashcards

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Biology 101 flashcards
1
Q

what statements describe a cell?

A

The smallest unit that can be called life

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2
Q

Rank the following levels of biological organization from smallest at the top to largest at the bottom.
Molecule, organ, atom, cell, tissue, organelle.

A

Atom, Molecule, Organelle, Cell, Tissue, Organ.

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3
Q

All living structures are composed of molecules, which, in turn, consist of Blank______ bonded together.

A

atoms

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4
Q

What level of biological organization is found in all organisms and consists of atoms bonded together?

A

Molecules

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5
Q

What are membrane-bounded compartments within eukaryotic cells that carry out specialized functions?

A

Organelles

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6
Q

What is the basic unit of life and consists of a membrane enclosing water, DNA, and other chemicals?

A

cell

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7
Q

match to its correct level of biological organization
Organisms, community, ,molecule, ecosystem, organ, atom

A

Organism-Bacterial cell
Community- The plants, animals, and microorganisms that inhabit a particular field.
Molecule-DNA
Ecosystem-Organisms, water, air, and nutrients in a desert area.
Organ system-heart and blood vessels
Atom-carbon

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8
Q

What are the small chemical units that can combine to form molecules?

A

atoms

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9
Q

What is a group of joined atoms, such as deoxyribonucleic acid (DNA)?

A

A tissue is a group of cells, and cells contain many, many molecules. A group of atoms is a molecule.

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10
Q

In the hierarchy of biological organization, an organ is composed of several Blank______ interacting and working together.

A

tissues

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11
Q

Compartments within cells that carry out specific functions are called

A

organelles.

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12
Q

What statement describes a cell?

A

The smallest unit that can be called life

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13
Q

The biosphere consists of all parts of Earth that

A

can support life.

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14
Q

What is a structure consisting of tissues organized to interact and carry out specific functions?

A

An organ is a structure consisting of tissues organized to interact and carry out specific functions.

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15
Q

What describes the biological level called organelles, which is found in many types of cells?

A

compartments that carry out specialized functions

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16
Q

What is the basic unit of life and consists of a membrane enclosing water, DNA, and other chemicals?

A

Cell

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17
Q

Select all of the biological levels of organization that occur within a cell.
Organelles

correct

Molecules

incorrect

Atoms

incorrect

Tissues

incorrect

Organs

incorrect

Organ system

A

Organelles

Molecules

Atoms

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18
Q

What term refers to all parts of the planet that can support life?

A

biosphere

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19
Q

All organisms are composed of one or more
_______, the basic unit of life.

A

cells

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20
Q

In the hierarchy of biological organization, an organ is composed of several Blank______ interacting and working together.

A

tissues

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21
Q

In ecosystems, organisms that eat other organisms are called consumers, or

A

heterotrophs.

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22
Q

What describes homeostasis, one of the key characteristics of life?

A

internal state of constancy

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23
Q

A level of biological organization called the______ includes all parts of Earth and its atmosphere where life can survive.

A

biosphere

24
Q

Select all of the statements that are true about asexual reproduction.
Offspring are virtually identical to each other.

Two parents are required.

Genetic information comes from only one parent.

Genes from parents are mixed at each generation.

A

Offspring are virtually identical to each other.

Genetic information comes from only one parent.

25
Q

A leaf is composed of several tissues organized to work together and is a(n) ______ of a plant.

A

An organ system consists of multiple organs connected or working together. “Organ” is the biological term for a structure composed of several tissues working together.

26
Q

What are membrane-bounded compartments within eukaryotic cells that carry out specialized functions?

A

Organelles

27
Q

Match each category of organisms with their method of obtaining energy. primary producer, consumer, and decomposer.

A

primary producer
matches
autotroph that obtains energy and nutrients from nonliving sources

consumer
matches
heterotroph that obtains energy and nutrients by eating other organisms

decomposer
matches
heterotroph that obtains energy and nutrients from wastes and dead organisms

27
Q

A(n) ______ is an inherited characteristic or behavior that enables an organism to survive better than without the inherited characteristic.

A

adaptation

28
Q

Production of runners, spores, and clones that bud from a parent are all examples of

A

asexual reproduction.

29
Q

Natural_______ is a mechanism of evolution in which certain individuals from a population exhibit enhanced reproductive success based on inherited characteristics.

A

natural selection

30
Q

Flowers shaped for their pollinators, specific camouflaged color patterns of animals, and a beaver’s enormous front teeth for gnawing are all examples of

A

adaptations

31
Q

observation

observation drop zone empty.
hypothesis

hypothesis drop zone empty.
data collection

data collection drop zone empty.
data analysis

A

observation
matches
sensing or noticing something about the natural world or previous studies

hypothesis
matches
formulating a tentative explanation or statement

data collection
matches
conducting experiments or discovery-based science

data analysis
matches
statistical tests and interpretation of results

32
Q

What describes an experiment?

A

investigation carried out under controlled conditions

33
Q

Select all of the characteristics of natural selection.
Genetic variability in organisms is required.

Resources must be unlimited.

It favors adaptations to the current environment.

incorrect

Which organisms survive and reproduce is random.

A

Genetic variability in organisms is required.

It favors adaptations to the current environment.

34
Q

Biologists ask questions about

A

he natural world and living things.

35
Q

Rank the following steps of the generalized scientific method in order from the first step at the top to the last step at the bottom.

A

Observe and ask questions about something in the natural world.

Create a hypothesis to explain your observations and make predictions.

Carry out experiment(s) to test the hypothesis and collect data.

Analyze your data and draw conclusions.

36
Q

Select all of the following that can be limitations to scientific studies.

A

reluctance to accept unexpected conclusions

biases of scientists

misinterpretations of results

37
Q

Multiple interpretations, biases, and slow acceptance are limits of?

A

scientific inquiry.

38
Q

In ecosystems, organisms that eat other organisms are called consumers, or

A

heterotrophs.

39
Q

What describes the biological level called organelles, which is found in many types of cells?

A

compartments that carry out specialized functions

40
Q

What level of biological organization is found in all organisms and consists of atoms bonded together?

A

Molecules

41
Q

In the hierarchy of biological organization, an organ is composed of several Blank______ interacting and working together.

A

tissues

42
Q

nucleus

A

6/carbon/c/12.012——6 electrons (nucleus-6 protons 6 neutrons)

43
Q

what is an atom composed of?

A

protons(+), neutrons, and electrons(-)

44
Q

what indicates atomic number?

A

protons- atomic number is the top of the element

45
Q

mass number?

A

total number of protons and neutrons in the atom’s nucleus.

46
Q

what contains the atoms electrons?

A

energy shells/ orbitals

47
Q

what is the valence shell?

A

the shell farthest from the nucleus is important for bonding.

48
Q

when are covalent bonds formed?

A

when atoms share electrons

49
Q

ionic bond

A

One atom donates one or more electrons to another atom

50
Q

covalent bond

A

two atoms share pairs of electrons

51
Q

nonpolar

A

electronegativity difference between atoms is small

52
Q

polar

A

Electronegativity difference between atoms is moderate or large (0.4 to 1.7).

53
Q

hydrogen bond

A

An atom with a partial negative charge attracts a hydrogen atom with a partial positive charge. Hydrogen bonds form between adjacent molecules or between different parts of a large molecule.

54
Q

cohesion

A

the tendency of water molecules to stick to one another

55
Q
A

bio exam 1 (1 decks)

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