BIO STEPN!

Question 1

what statements describe a cell?

Answer 1

The smallest unit that can be called life

Question 2

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

Answer 2

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

Question 3

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

Answer 3

atoms

Question 4

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

Answer 4

Molecules

Question 5

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

Answer 5

Organelles

Question 6

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

Answer 6

cell

Question 7

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

Answer 7

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

Question 8

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

Answer 8

atoms

Question 9

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

Answer 9

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

Question 10

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

Answer 10

tissues

Question 11

Compartments within cells that carry out specific functions are called

Answer 11

organelles.

Question 12

What statement describes a cell?

Answer 12

The smallest unit that can be called life

Question 13

The biosphere consists of all parts of Earth that

Answer 13

can support life.

Question 14

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

Answer 14

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

Question 15

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

Answer 15

compartments that carry out specialized functions

Question 16

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

Answer 16

Cell

Question 17

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

Answer 17

Organelles

Molecules

Atoms

Question 18

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

Answer 18

biosphere

Question 19

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

Answer 19

cells

Question 20

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

Answer 20

tissues

Question 21

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

Answer 21

heterotrophs.

Question 22

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

Answer 22

internal state of constancy

Question 23

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

Answer 23

biosphere

Question 24

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.

Answer 24

Offspring are virtually identical to each other.

Genetic information comes from only one parent.

Question 25

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

Answer 25

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.

Question 26

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

Answer 26

Organelles

Question 27

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

Answer 27

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

Question 27

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

Answer 27

adaptation

Question 28

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

Answer 28

asexual reproduction.

Question 29

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

Answer 29

natural selection

Question 30

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

Answer 30

adaptations

Question 31

observation observation drop zone empty. hypothesis hypothesis drop zone empty. data collection data collection drop zone empty. data analysis

Answer 31

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

Question 32

What describes an experiment?

Answer 32

investigation carried out under controlled conditions

Question 33

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.

Answer 33

Genetic variability in organisms is required. It favors adaptations to the current environment.

Question 34

Biologists ask questions about

Answer 34

he natural world and living things.

Question 35

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.

Answer 35

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.

Question 36

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

Answer 36

reluctance to accept unexpected conclusions biases of scientists misinterpretations of results

Question 37

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

Answer 37

scientific inquiry.

Question 38

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

Answer 38

heterotrophs.

Question 39

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

Answer 39

compartments that carry out specialized functions

Question 40

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

Answer 40

Molecules

Question 41

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

Answer 41

tissues

Question 42

nucleus

Answer 42

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

Question 43

what is an atom composed of?

Answer 43

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

Question 44

what indicates atomic number?

Answer 44

protons- atomic number is the top of the element

Question 45

mass number?

Answer 45

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

Question 46

what contains the atoms electrons?

Answer 46

energy shells/ orbitals

Question 47

what is the valence shell?

Answer 47

the shell farthest from the nucleus is important for bonding.

Question 48

when are covalent bonds formed?

Answer 48

when atoms share electrons

Question 49

ionic bond

Answer 49

One atom donates one or more electrons to another atom

Question 50

covalent bond

Answer 50

two atoms share pairs of electrons

Question 51

nonpolar

Answer 51

electronegativity difference between atoms is small

Question 52

polar

Answer 52

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

Question 53

hydrogen bond

Answer 53

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.

Question 54

cohesion

Answer 54

the tendency of water molecules to stick to one another