Science Mid-Term Exam

Front 1

Scientist often use experiments to test there ______, which are possible explanations for observations.

Back 1

hypotheses

Front 2

_______ is defined as the amount of space something occupies.

Back 2

Volume

Front 3

A life scientist would use a(n) __________________ to magnify living specimen.

Back 3

compound light microscope

Front 4

A set of related hypotheses taht are supported by evidence may become accepted as a _______.

Back 4

theory

Front 5

_________ is the use of knowledge, tools, and material to solve problems and accomplish tasks.

Back 5

Technology

Front 6

You would find a life scientist studying how ____ could be used to control ____ ___ ___________.

Back 6

wasps

fire ant populations

Front 7

When researchers use the scientific meathod, they should _________.

Back 7

repeat or switch the order of steps as needed

Front 8

A scientist who wants to study the possible side effects of a new medicine would probably ______________.

Back 8

include a control group that received no medicine

Front 9

Which tool would a life scientist use to obtain a detailed image of the nerves that branch off a person's spinal cord?

Back 9

an MRI

Front 10

An advantage of using the International System of Units is that it ____________________.

Back 10

gives scientists a common way to share their results

Front 11

In a scientific experiment, a hypothesis that cannot be tested is always considered to be ___________.

Back 11

not useful

Front 12

A _______ object contains the same amount of matter as a 10 kg object.

Back 12

10,000 g

Front 13

In the cell membrane, ____________ molecules form two layers.

Back 13

phospholipid

Front 14

When a planarian worm is cut in half, each half develops into a whole worm. This is an example of _________ reproduction.

Back 14

asexual

Front 15

___________ are sometimes called the blueprints of life.

Back 15

Nucleic acids

Front 16

_________ is the passing of traits from one generation to the next.

Back 16

Heredity

Front 17

_________ refers to all of the chemical activities that an organism's cells perform.

Back 17

Metabolism

Front 18

______ is a complex carohydrate manufactured by plants.

Back 18

Starch

Front 19

When a duck dives under water, its inner eyelids automatically raise to cover the duck's eyes. In this cas, water acts as ____________.

Back 19

stimulus

Front 20

The molecule that provides energy for cellular processes is ___.

Back 20

ATP

Front 21

The subunits of proteins are _____________.

Back 21

amino acids

Front 22

Cells do not use ________ for energy storage.

Back 22

nucleic acids

Front 23

Proteins are not the ________ source of energy for cells.

Back 23

primary

Front 24

All cells have a nucleus and a cell membrane is not part of the _____________.

Back 24

cell theory

Front 25

A life scientist who observes the relationships between plants, animals, weather, and soil on a mountaintop is studying a(n) _______________________.

Back 25

ecosystem

Front 26

________ is not found in plant cells.

Back 26

Lysosome

Front 27

__________ contain cellulose.

Back 27

All plants cells

Front 28

___________ is the part of a cell that manufactures lipids.

Back 28

Endoplasmic reticulum

Front 29

Material that are to be released outside the cell are transported to the cell membrane in a small compartment that has pinched of the ___________.

Back 29

Golgi complex

Front 30

What is not a characteristic of bacteria?

Back 30

They have an endoplasmic reticulum.

Front 31

_________ are made up of various tissues that work together to perform a specific job.

Back 31

Organs

Front 32

The role of the cell's __________ is to release energy that can be used to power various cellular processes.

Back 32

mitochondria

Front 33

Unlike animal cells, plant cells have ___________ to capture energy from the sun.

Back 33

chloroplasts

Front 34

DNA, the genetic material of a eukaryotic cell, is located in the cell's _____________.

Back 34

nucleus

Front 35

Cells that have no membrane-covered organelles are ___________.

Back 35

prokaryotic

Front 36

A part of the Golgi complex can pinch off and form a __________, which contains digesting enzymes.

Back 36

lysosomes

Front 37

_________ is the random movement of particles from an area of high concentration to an area of low concentration.

Back 37

Diffusion

Front 38

Plants produce their own food by the process of ___________.

Back 38

photosynthesis

Front 39

Food molecules that are too large to pass easily through the cell membrane can enter the cell by _________.

Back 39

endocytosis

Front 40

Human body cells have 23 pairs of ____________.

Back 40

homologous chromosomes

Front 41

The process of cell division in a bacterial cell is called ______________.

Back 41

binary fission

Front 42

Food particles move through proteins in the cell membrane without using energy in a process called __________.

Back 42

passive transport

Front 43

When wilted celery is soaked in water, it becomes crisp again due to __________.

Back 43

osmosis

Front 44

Fermentation in animal cells produces_________.

Back 44

lactic acid and ATP

Front 45

Oxygen is used to break down food molecules and release energy in a process called _______________.

Back 45

cellular respiration

Front 46

What is a product of photosynthesis?

Back 46

Glucose

Front 47

What is not used to make glucose in photosynthesis?

Back 47

O2

Front 48

A __________ plant produces offspring with the same traits as the parent.

Back 48

true-breeding

Front 49

The physical expression of an organism's genes is its ________.

Back 49

phenotype

Front 50

Each parent donates a set of instructions, known as _______, to its offspring.

Back 50

genes

Front 51

When Mendel performed genetic crosses, the traits that seemed to vanish were _______________.

Back 51

recessive traits

Front 52

Eggs and sperm are _____.

Back 52

sex cells

Front 53

These may be dominant or recessive.

Back 53

Alleles

Front 54

If you cross two rabbits that have the genotype Bb, how many possible genotypes can be found in the offspring?

Back 54

three

Front 55

How many chromosomes are present in a normal human sex cell?

Back 55

23

Front 56

If a purple flower with the genotype Pp (P=purple; p=white) self-pollinates, the ratio of purple offspring to white offspring would be___________.

Back 56

three purple: one white

Front 57

Probability is ________________.

Back 57

the mathematical chance that an event will occur

Front 58

Genes are composed of subunits known as _______________.

Back 58

nucleotides

Front 59

Chargaff's rules state that the amount of _________ in DNA is always equal to the amount of guanine.

Back 59

cytosine

Front 60

____________ allows scientists to transfer genes from one organism to another.

Back 60

Genetic engineering

Front 61

__________ is a tool for tracing a genetic trait throug generations of family.

Back 61

A pedigree

Front 62

Examples of chemical ________ include asbestos and chemicals found in cigarette smoke.

Back 62

mutagens

Front 63

The code for a given amino acid consists of ______ bases.

Back 63

three

Front 64

What materials make up each nucleotide in a DNA moleule?

Back 64

a sugar, a phosphate, and a base

Front 65

Most genetic disorders, such as sickle cell anemia, are due to a _________.

Back 65

recessive gene

Front 66

The complementary strand to the DNA sequence TAGTCA woulb be __________.

Back 66

ATCAGT

Front 67

The enviroment has no influence on a person's trait is ___________.

Back 67

false

Front 68

Genetic engineering is currently used to __________.

Back 68

genetically alter plants, manufacture proteins, and repair damaged genes

Front 69

What could cause sickle cell anemia?

Back 69

a change in the order of bases in a person's DNA

Front 70

A pine tree is a member of the kingdom __________.

Back 70

Plantae

Front 71

Some members of kingdom Protista ______________.

Back 71

have flagella

Front 72

The seven levels of classification, from general to specific, are: ______________.

Back 72

kingdom, phylum, class, order, family, genus, species

Front 73

Linnaeus is known for ____________.

Back 73

founding the science of taxonomy

Front 74

Organisms in the kingdom _________________ usually move by themselves and have advanced nervous systems that allow them to respond to their environment.

Back 74

Animalia

Front 75

The scientic name for the common house can is Felis domesticus. What is its species name?

Back 75

domesticus

Front 76

Eubacteria do not _____________________.

Back 76

live in hot springs

Front 77

Fungi obtain nutrients by ___________________.

Back 77

absorbing them from their surroundings

Front 78

Members of the kingdom ________ include such organism as the mold that grows on bread.

Back 78

Fungi

Front 79

Orders of organisms are further broken down into _________.

Back 79

families

Front 80

Two organisms that are in the same class will also be in the same ____________.

Back 80

phylum

Front 81

Some organisms in the kingdom __________ are able to live inside the human body.

Back 81

Eubacteria