Bio Test 1

Front 1

The lenses on a microscope that you look through are known as what?

Back 1

Oclar Lens

Front 2

The lenses on the turret of a microscope are known as what?

Back 2

Objective lens

Front 3

When you are done using your microscope how are you suppose to leave it set up for the next person?

Back 3

Objective enes-low, stage 1/2 way down, slide mount in the middle, carry by neck and base. neck out of case.

Front 4

What is the magnification of the canning lens

Back 4

4

Front 5

What is the magnifiction of the ocular lens on our microscope?

Back 5

10x

Front 6

What is the magnification of the objective lens on our microscope?

Back 6

4,10,40,100

Front 7

Once you have centered and focused on an object under the scanning lens , what is the only knob you should have to touch when you change to the low power lens?

Back 7

fine focus knob

Front 8

the acquistion of traits after parents transmit their DNA to offspring

Back 8

inheritance

Front 9

Differences in heritable traits arise through what mechanism?

Back 9

mutations

Front 10

A standard against which experimental groups can be compared

Back 10

conrol group

Front 11

smallest unit of life?

Back 11

cell

Front 12

Contains instructions for building proteins

Back 12

DNA

Front 13

Researchers assign all species to one of three

Back 13

Domains

Front 14

What are the only two types of prokaryotic cells?

Back 14

Bacteria and Archaea

Front 15

What are the four kingdoms of Eukaryotes

Back 15

Plants,Fungi, Animals, Protists

Front 16

The capacity of cells to extract energy from sources in the environment, use it to live, grow and reproduct?

Back 16

Metabolism

Front 17

Outcome of differences in survival, reproduction among individuals or a population that differ in the details of one or more traits.

Back 17

Natural Selection

Front 18

A proposed explanation or educated guess

Back 18

hypothesis

Front 19

State in which the internal environment is being maintatined within a tolerable range

Back 19

Homostatis

Front 20

a related set of hypotheses that form a broadly usefol,testable explanation

Back 20

scientific theory

Front 21

which cell components are the sites of photosynthesis?

Back 21

chloroplasts

Front 22

Which cell component is the site of robosomal subunit assembly

Back 22

nucleus

Front 23

which cell component is responsbile for cell shape and internal organization

Back 23

cytoskeleton

Front 24

which cell compoent provides protection and structual support

Back 24

cell wall

Front 25

which cell components are special centers that produce and organize microtubules?

Back 25

centroles

Front 26

which cell component contols substance moving into and out of the cell?

Back 26

plasma membrane

Front 27

which cell component makes lipids,degrades fats and inactivates toxins

Back 27

smooth ER

Front 28

which cell compnent is the site of initial modication for newly forming proteins?

Back 28

rough ER

Front 29

Which elements of cytoskeleton are the thinnest and compsed of actin?

Back 29

microfilaments

Front 30

which cell component is the site of aerobic respiration and ATP formation?

Back 30

Mitrochondria

Front 31

Which cell component is the site of final modification of proteins and lipids

Back 31

Golgi Body

Front 32

Which cell component increases a cells surface area and stores waste?

Back 32

central vacuole

Front 33

What are the three types of cell-to-cell junctions?

Back 33

tight.adhering,gap

Front 34

Which cell component physically seperates the DNA from the cytoplasm?

Back 34

nuclear envelope

Front 35

Which cell component is responible for protein synthesis?

Back 35

Ribosomes

Front 36

Stage of mitosis where new nuclear membranes form around two distinct nuclei.

Back 36

Telophase

Front 37

During what stage of mitosis have the chromosomes become lined up at the spindle equator

Back 37

Metaphase

Front 38

An organism with a diploid [2n] chromoosome number of 46 has how many chromatids during G1 of the cell cycle

Back 38

46

Front 39

Abnormal masses of cells that have lost control of how they grow and divide

Back 39

neoplasms

Front 40

Cytoplasmic division occurs furing what stage of mitosis?

Back 40

late anaphase an end of telphase

Front 41

During what stage of mitosis does the nuclear memebrane break up

Back 41

Prophase

Front 42

During what stage of the cell cycle are chromosomes duplicaed?

Back 42

Interphase- S phase

Front 43

During what stage of mitosis is the sister chromatids of each chromosome are being pulled to opposite sides of the cell microtubules

Back 43

Anaphase

Front 44

Following mitosis the chromoesome number of a daughter cell is ___the parent cell

Back 44

equal to - 46

Front 45

The cell cycle is controlled internally by means of what?

Back 45

Checkpoints

Front 46

The cell cycle is controlled externally by means of what?

Back 46

Growth Factors

Front 47

Approximately 50% of human cancers involve a mutation in the gene coding for

Back 47

P53 gene

Front 48

What are the normal versions of genes that promote cell division?

Back 48

Proto-Oncogenes

Front 49

What are substances that perturb normal physiological development called?

Back 49

Teratogens

Front 50

Most neurons and muscle cells in adults are quiescent and have entered what stage of the cell cycle?

Back 50

Interphase-G0

Front 51

A large macromolecules into which DNA is packed in a cell

Back 51

Chromosome