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Biology STAAR RC 4: Biological Processes and Systems

Total questions: 113

Worksheet time: 2hrs 49mins

Name
Class
Date
1.
Which four body systems interact to allow a person to sneeze?
a)
Muscular, immune, nervous, respiratory
b)
Nervous, respiratory, circulatory, skeletal
c)
Respiratory, endocrine, skeletal, circulatory
d)
Lymphatic, skeletal, respiratory, muscular
2.

Gibberellins are hormones produced in the root tips of plants. The plant uses these hormones to stimulate the growth of shoots.


How are gibberellins able to affect other parts of the plant?

a)

Gibberellins are absorbed through the stomata and attach to chloroplasts.

b)

Gibberellins are transported through vascular tissues to other parts of the plant.

c)

Gibberellins become concentrated within the tissues of the plant during mitosis.

d)

Gibberellins become modified once they infect healthy cells and are later released to infect other cells.

3.

The fuzzy millipede, Polyxenus fasciculatus, is found in Texas and is preyed upon by most species of ants. To protect itself against the ants, it ejects fibers from a tuft located at the tail end of its body. The tufts have hooks at the tips and barbs along their length that lock and interlink with the ant’s setae, small hairs that cover the body of the ant. When an ant attacks, the millipede flexes its back end toward the ant and wipes the tufts against it. As the ant attempts to remove the tufts, it entangles itself more, becoming immobilized.

a)

Muscular and integumentary

b)

Immune and muscular

c)

Integumentary and endocrine

d)

Endocrine and immune

4.

A chart of some plant systems and functions is shown.

a)

Option 1

b)

Option 2

c)

Option 3

d)

Option 4

5.

A feedback mechanism in the human body is shown.

a)

The nervous and reproductive systems work together to stimulate the production of insulin.

b)

The circulatory and endocrine systems work together to keep blood sugar levels constant.

c)

The excretory and nervous systems work together to convert glycogen into glucose.

d)

The immune and circulatory systems work together to circulate blood through the pancreas.

6.

A table of four types of carbohydrates is shown.

a)

Energy: glycogen and starch Structure: cellulose and chitin

b)

Energy: cellulose and chitin Structure: glycogen and starch

c)

Energy: chitin and glycogen Structure: cellulose and starch

d)

Energy: cellulose and starch Structure: chitin and glycogen

7.

Transmembrane proteins span the width of cell membranes. Four types of transmembrane proteins are shown in a section of cell membrane.

a)

stop chemical reactions within the cell

b)

synthesize molecules that signal other cells

c)

help the cell interact with its external environment

d)

remove large waste particles from the cytoplasm of the cell

8.
Which biomolecule is made of nucleotides and contain you DNA?
a)
Carbohydrate
b)
Lipids
c)
Protein
d)
Nucleic Acid
9.

Which biomolecule helps form muscles?

a)

Nucleic Acid

b)

Carbohydrate

c)

Protein

d)

Lipids

10.
Which biomolecule is responsible for insulation and energy storage?
a)
Protein
b)
Nucleic Acid
c)
Lipid
d)
Carbohydrate
11.
Which biomolecule has sugars and starches?
a)
Lipids
b)
Proteins
c)
Carbohydrates
d)
Nucleic Acid
12.
What is the purpose  of an enzyme?
a)
give permission for the reaction
b)
raise activation energy
c)
speed up reactions
d)
control how many reactions occur
13.
The area that the substrate fits into on the enzyme is called the:
a)
Active Site
b)
Allosteric Site
c)
DiSulphide Bridge
d)
β-Pleated Sheet
14.
Enzymes catalyze reactions by ___________ Activation Energy.
a)
Increasing
b)
Decreasing
15.
At high temperatures enzyme activity declines because of:
a)
Denaturation
b)
Decreased Kinetic Motion
c)
Increased H-Bonding
d)
Dissociation of Ionic Compounds
16.
Most enzymes have the ending:
a)
-ase
b)
-ose
c)
-ic acid
d)
-ate
17.
All living things contain what element?
a)
helium
b)
sodium
c)
copper
d)
carbon
18.
Which of the following conclusions can be drawn from this graph?
a)
The optimum pH of the enzyme is 6.6.
b)
The optimum pH of the enzyme is 5.8
c)
The enzyme’s activity increases as pH increases 5.0 to 9.0
d)
The enzyme’s activity is greater around pH of 8.0 .
19.
Based on the graph, what is the optimal temperature for this enzyme? 
a)
15oC
b)
40oC
c)
30oC
d)
35oC
20.
An enzyme speeds up a chemical reaction in the cell but can only be used once.  True or False? 
a)
true
b)
false
21.
A monomer is ...
a)
a single atom
b)
a building block for polymers
c)
a single element
d)
is an inorganic molecule
22.
The process of cellular respiration 
a)
is performed only by organisms that are incapable of photosynthesis
b)
is performed by autotrophs and heterotrophs
c)
occurs before plants are able to carry out photosynthesis
d)
occurs only in animals
23.
In which way are photosynthesis and cellular respiration different?
a)
Cellular respiration stores ATP, while photosynthesis releases ATP.
b)
Cellular respiration produces oxygen, while photosynthesis uses oxygen.
c)
Photosynthesis releases energy, while cellular respiration stores energy.
d)
Photosynthesis uses carbon dioxide, while cellular respiration produces carbon dioxide.
24.
What is the correct equation for cellular respiration?
a)
6O2 + C6H12O6 -> 6CO2 + 6H2O + Energy
b)
6O2 + C6H12O6 + Energy -> 6CO2 + 6H2O
c)
6CO2 + 6H2O -> 6O2 + C6H12O6 + Energy
d)
6CO2 + 6H2O + Energy -> 6O2 + C6H12O6
25.
What elements are common to all 4 biomolecules?
a)
Carbon, hydrogen, nitrogen
b)
Carbon, Nitrogen, Phosphorus
c)
Carbon, Hydrogen, Oxygen
d)
Carbon, Hydrogen, Phosphorus
26.
What biomolecule do enzymes belong to? 
a)
Carbohydrate
b)
Lipid
c)
Nucleic Acid
d)
Protein
27.
Which biomolecule is a main source of quick energy?
a)
Nucleic Acid
b)
Protein
c)
Lipid
d)
Carbohydrate
28.
Which biomolecule is found in fats, oils, and waxes and is a source of long-term energy? 
a)
Proteins
b)
Nucleic Acid
c)
Lipids
d)
Carbohydrate
29.
What is the function of a nucleic acid?
a)
Stores genetic information
b)
Stores energy
c)
Quick source of energy
d)
Builds structures
30.
Where does aerobic respiration take place?
a)
Cytoplasm
b)
Mitochondria
c)
Stroma
d)
Thylakoid
31.
Which type of respiration occurs without the presence of oxygen?
a)
Aerobic 
b)
Anaerobic 
32.
The overall goal of cellular respiration is to make:
a)
Glucose
b)
ATP
c)
Oxygen
d)
Water
33.
What is the name of the process that helps make beer and wine?
a)
Fermentation
b)
Alcoholic fermentation
c)
Lactic acid fermentation
d)
Glycolysis
34.
Which type of fermentation occurs in muscles?
a)
Alcoholic 
b)
Lactic acid
35.
What are the two reactants of cellular respiration?
a)
C6H12O6 & 6CO2
b)
6 CO2 & 6H2O
c)
C6H12O6 & 6O2
d)
6CO2 & 6O2
36.
 Invasive plant species affect the interactions of living and nonliving components of an ecosystem, so the removal of invasive plants is often necessary. The goal of most plant-control methods is to disrupt or inhibit the function of different plant systems. For example, insects can be used to chew through roots in order to reduce a plant’s ability to absorb water.
Which of these functions would be most immediately affected by a reduction in water uptake by roots?
a)
Disease resistance 
b)
Seed dispersal
c)
Sunlight absorption
d)
Photosynthesis 
37.
A student reads this advertisement for a product containing a plant micronutrient that can be added to soil.
Based on this information, the student can conclude that boron is absorbed by plant roots from soil and then —
a)
transported to reproductive tissues by the plant’s shoot system
b)
stored in plant stems until the flowers are pollinated
c)
concentrated in the roots until the plant’s reproductive tissues mature
d)
transported by the phloem to the stomata in leaves, where it attracts pollinators
38.
 A student conducted an investigation to study phototropism in grasses. The only difference between the control group and the experimental group was light conditions. The control group was provided full light, while the experimental group was shaded on one side. The diagrams show the average heights and positions of blades of grass in the investigation.
Which statement best explains why the grass tips of the experimental group bent toward the light?
a)
Water evaporated faster on the side of the plant having full light
b)
Light sensors in the grass tips stimulated a hormone in the shoot system.
c)
The xylem in the root system absorbed more nutrients from the shaded side.
d)
The side facing the light has a greater chance of absorbing carbon dioxide from the atmosphere.
39.
A student studying interactions between body systems constructs this table. The student plans to fill out the table with phrases that describe an interaction between each pair of systems. 
Which of these phrases could be placed in the position marked with an X? 
a)
Provides nutrients to kidney cells
b)
Provides nutrients to brain cells
c)
Provides nutrients to nerve cells
d)
Provides nutrients to muscle cells 
40.
 Recent studies in bone research indicate that using ultrasound on a broken bone can decrease the healing time by 25%. Which of these are the most basic levels of organization involved when a bone heals? 
a)
Cells and tissue
b)
Cells and organ system
c)
Organ system and organism
d)
Tissue and organ system
41.
The diagram demonstrates a feedback process involving antidiuretic hormone (ADH). ADH increases the permeability of parts of the nephrons of the kidney, resulting in less water in the urine.
This feedback loop is likely to be activated when — 
a)
the body experiences dehydration
b)
blood glucose levels are stable
c)
body temperature drops
d)
the urinary tract is infected
42.
The picture shows bean-shaped glands called nodes. The clusters of cells in nodes include macrophages that break down viruses and other potentially harmful materials. Nodes also contain cells that produce protein particles capable of capturing harmful materials that flow in tissue fluid through the nodes. Different parts of the body are drained by nodes in different regions of the body.
Which body systems are directly responsible for regulating these nodes and protecting the body from harmful materials in tissue fluid?
a)
Immune and lymphatic systems
b)
Digestive and nervous systems
c)
Endocrine and digestive systems
d)
Circulatory and nervous systems
43.
 The surface of the stomach is lined with epithelial cells called surface mucous cells. These cells produce a thick mucus that coats the epithelium on the inside surface of the stomach. What is the purpose of the mucous coating?
a)
It allows the epithelium to aid in the process of digestion.
b)
It causes the epithelium to expand as food enters the stomach.
c)
It protects the epithelium from the acid content of the stomach.
d)
It traps nutrients inside the epithelium as food passes through the stomach
44.
Cytokinins are a class of plant hormones that help regulate growth by promoting cell division. Cytokinins are produced mainly in meristematic tissue, where most plant growth occurs. Which system carries cytokinins produced in the roots to the rest of the plant?
a)
Vascular system
b)
Dermal system
c)
Reproductive system
d)
None of these
45.
Scientists studying illnesses caused by chemically contaminated food conduct research to minimize the effects of these diseases on society. These chemicals harm the body through interactions between the digestive system and the immune system. Scientists conducting this research are likely to describe which of these interactions between the digestive and immune systems? 
a)
Chemicals enter the immune system through a break in the skin. The chemical contamination is then passed to the digestive system by the circulatory system.
b)
The immune system transforms the chemicals in the contaminated foods into harmless chemicals. These harmless chemicals are then broken down by the digestive system.
c)
When contaminated foods are eaten, the immune system prevents the chemicals from entering the digestive system.
d)
Chemicals enter the digestive system through contaminated foods. Once in the body, the chemical contaminants impair the body’s ability to fight off infectious diseases.
46.
Several structures work together to allow flowering plants to reproduce. The diagram shows a typical flower.
Which table correctly identifies the function of each structure or group of structures in the reproduction of the plant?
a)
X Pollen production
Y Pollen transfer
Z Production of eggs
b)
X Attraction of pollinators
Y Production of male sex cells
Z Egg production and embryo development
c)
X Protection for embryo
Y Supply nourishment to embryo
Z Place of embryonic development
d)
X Photosynthesis
Y Production of cells that protect internal organs
Z Production of egg and sperm
47.
The graph models core body temperature during a rapid change in environmental conditions.
Which statement explains the pattern in the graph?
a)
Body temperature varies in a predictable pattern during the day.
b)
Body temperature is controlled by an internal feedback mechanism.
c)
Vasodilation and vasoconstriction are dependent on the time of day.
d)
Vasodilation and vasoconstriction trigger an immediate increase in body temperature.
48.
Plants called sundews have rounded green leaves with many hair-like structures. The ends of these structures contain enzymes in a sticky liquid that looks like nectar or moisture, as shown in the picture. The hairs do not react to dust or nonliving material but will bend inward when insects get caught in the sticky liquid. Sundews digest trapped insects over a period of a few days.
Based on this information, what functions do the specialized leaves of sundews perform?
a)
Provide water to the plant and perform photosynthesis
b)
Respond to stimuli and anchor the plant
c)
Provide nutrients to the plant and respond to stimuli
d)
Release pollen to insects and perform photosynthesis
49.
 During the final stages of human gestation, receptors for the hormone oxytocin increase on the smooth muscle cells of the uterus. The release of oxytocin during labor stimulates the smooth muscle tissue in the wall of the uterus. The vigorous contraction of the uterine smooth muscle helps push the baby through the birth canal so that delivery can occur. This process involves the interaction of which organ systems? 
a)
Endocrine and muscular only
b)
Endocrine and reproductive only
c)
Endocrine, muscular, and reproductive
d)
Endocrine, reproductive, and excretory
50.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
CO2 + light + H2O --> O2 + Sugar
b)
CO2 + sugar + H2O --> O2 + light
c)
O2 + light + H2O --> CO2 + Sugar
d)
CO2 + O2 + H2O --> Light+ Sugar
51.
Why do plants conduct photosynthesis?
a)
To make light
b)
To make mitochondria
c)
To make glucose
d)
To release carbon dioxide
52.
What major energy transformation occurs during photosynthesis?
a)
Thermal --> Chemical
b)
Kinetic --> Radiant
c)
Chemical --> Radiant
d)
Radiant --> Chemical
53.
Which organelle in the plant cell performs photosynthesis?
a)
Chloroplast
b)
Mitochondria
c)
Nucleus
d)
Cytoplasm
54.
What are the products of photosynthesis (what is made)?
a)
Glucose and Chlorophyll
b)
Glucose and Oxygen
c)
Water and Light
d)
Carbon dioxide and Water
55.

How do enzymes speed up chemical reaction?

a)

Increasing activation energy

b)

Decreasing activation energy

c)

Increasing deactivation energy

d)

Decreasing deactivation energy

56.

How does most of the water needed by the plant get into its leaves?

a)

It enters through the stomata

b)

The roots absorb it and then it travels up the xylem

c)

It's made during a chemical reaction in the stem

d)

The flowers capture water and deliver it to the leaves

57.
How does carbon dioxide get into the leaves of a plant?
a)
It's absorbed by the roots
b)
It's made in a chemical reaction in the stem
c)
It enters through the stomata
d)
It goes through the flowers
58.
The female reproductive and endocrine systems work interactively for which main purpose?
a)
To maintain homeostasis by removing waste products from the body
b)
To release neurotransmitters during times of stress
c)
To control hormone levels to prepare the body for pregnancy
d)
To exchange gases to support cellular aerobic respiration
59.

Plant roots have extensions called root hairs. These root hairs are important in the homeostasis of the plant.

a)

Root hairs convert minerals into glucose for immediate use by cells.

b)

Root hairs decrease the need for osmosis and diffusion in vascular tissue.

c)

Root hairs prevent water loss in leaves through transpiration and gas exchange.

d)

Root hairs increase the surface area of the roots for nutrient and water absorption.

60.

A corn plant produces both male and female flowers. The male flower forms the tassel and the female flower forms the ear of corn. The silks that emerge from the ear are the stigma of the female flower. Each silk leads to an ovule that can become a corn seed.

a)

More tassels than silks need to be present on the same plant.

b)

Pollen grains must fall from tassels and land on the silks of the ear.

c)

Pollen must be transported from the tassel to the silk through the phloem.

d)

The tassels must come into direct contact with the silks of the ear.

61.
How do the circulatory system and immune system work together to respond to an injury?
a)
Increased blood flow kills healthy cells which prevents infection at the site of the injury.
b)
Increased blood flow removes infected cells from the body at the site of the injury.
c)
Increased blood flow carries white blood cells to the site of the injury
d)
Increased blood flow allows for an increase in the exchange of O2 and CO2 at the site of the injury.
62.

Fruits grown in hot climates are usually less sweet than those grown in cooler temperatures. The high temperatures increase the rate of respiration in the plants, thus reducing the sugar content in some fruits.


Why does increased respiration in the leaves and stems reduce the sugar content in the fruits of a plant?

a)

Chloroplasts move from the fruits to the leaves and stems to provide energy for respiration.

b)

The flow of nutrients shifts from the phloem to the xylem, moving nutrients away from the fruits.

c)

Sugars are moved from the fruits to the roots for storage.

d)

Sugars produced in the leaves are used as an energy source instead of being stored in fruits.

63.
Which two body systems must directly interact for vertebrate organisms to exchange gases?
a)
Skeletal system and muscular system
b)
Excretory system and reproductive system
c)
Circulatory system and respiratory system
d)
Digestive system and immune system
64.
These two systems interact to allow our bodies respond to the environment and to maintain homeostasis.  (Hint - they both send messages and one is fast, one is slow)
a)
nervous and endocrine
b)
nervous and digestive
c)
endocrine and excretory
d)
respiratory and digestive
65.
What is the structure in the picture?
a)
Stomata
b)
Leaves
c)
Roots
d)
Vascular tissue
66.
Transports water and nutrients UP from the soil through all parts in the plant. Involved in transpiration.
a)
xylem
b)
phloem
c)
stomata
d)
roothair 
67.
When water leaves a plants' leaves in the water cycle
a)
evaporation
b)
transpiration
c)
precipitation
d)
condensation
68.
The function of a ___ is to absorb water, store food, and anchor plants. 
a)
phloem
b)
tissue
c)
xylem
d)
root
69.
What are the reactants of photosynthesis? 
a)
water, carbon dioxide, light energy
b)
oxygen and glucose
c)
oxygen and carbon dioxide
d)
oxygen and water
70.

Why is blood considered a tissue?

a)

cells working together for a specific purpose

b)

tissues are always red

c)

blood moves through the entire body

d)

blood makes up an organ system

71.

Plants called sundews have rounded green leaves with many hair-like structures. The ends of these structures contain enzymes in a sticky liquid that looks like nectar or moisture, as shown in the picture. The hairs do not react to dust or nonliving material but will bend inward when insects get caught in the sticky liquid. Sundews digest trapped insects over a period of a few days. Based on this information, what functions do the specialized leaves of sundews perform?

a)

Provide water to the plant and perform photosynthesis

b)

Respond to stimuli and anchor the plant

c)

Provide nutrients to the plant and respond to stimuli

d)

Release pollen to insects and perform photosynthesis

72.

The complex carbohydrates pictured below are made by linking molecules of glucose. In all three complex carbohydrates, the subunits of glucose are bonded together differently. Because they have different structures, they most likely —

a)

contain different chemical elements

b)

form different proteins

c)

carry different nucleotides

d)

perform different functions

73.

Several structures work together to allow flowering plants to reproduce. The diagram shows a typical flower. Which table correctly identifies the function of each structure or group of structures in the reproduction of the plant?

a)
b)
c)
d)
74.

Kidneys are part of the excretory system in a human body. They purify the impure blood and send it back to the rest of the body. Which system is mainly responsible for the transport of plasma to the kidneys?

a)

Respiratory system

b)

Circulatory system

c)

Muscular system

d)

Nervous system

75.

In the early 1980s scientists were able to produce two biomolecules by splicing a human gene into the bacterium E. coli to make recombinant human insulin and growth hormone. Which statement best explains why this experiment was successful?

a)

Human cells are eukaryotic, and E. coli cells are prokaryotic.

b)

All living organisms share the same genome.

c)

The genes for all organisms are composed of the same building blocks.

d)

The human body contains many types of bacteria, including E. coli.

76.

Health professionals sometimes recommend nutritional supplements that contain a variety of species of bacteria to promote good digestive health. The product label for one of these supplements is shown. Why does this type of bacteria-filled supplement benefit human health instead of causing illness?

a)

Stomach acids and digestive enzymes kill the bacteria in this type of supplement, protecting the person against future infections by live organisms.

b)

The human digestive system contains billions of beneficial bacteria that enhance digestion and nutrient absorption, synthesize vitamins, and help limit the growth of harmful bacteria

c)

These species of bacteria remove all other species of microorganisms living in the human digestive system and ensure that no microorganisms survive to contaminate the body.

d)

These bacteria are able to deactivate viruses that may inhabit the human digestive system and are used to protect against further viral infections.

77.

Which statement best describes the relationship between the products of photosynthesis and the reactants in cellular respiration?

a)

The products of photosynthesis serve as the reactants in cellular respiration to provide chemical energy.

b)

The products of photosynthesis combine with the reactants in cellular respiration to remove ATP from cells.

c)

The products of photosynthesis inhibit the reactants in cellular respiration in the presence of light.

d)

The products of photosynthesis change the structure of the reactants in cellular respiration in the presence of light.

78.

In the early 1900s a scientist hypothesized a link between DNA and the production of protein in the cytoplasm. However, the fact that DNA could not be found outside the nucleus led scientists to believe that another substance was also involved in the synthesis of protein in the cytoplasm. In the 1940s scientists performed an experiment that ultimately identified the site of protein synthesis. They also identified the molecule responsible for transporting information from the nucleus to the site of protein synthesis. What was the newly identified molecule?

a)

a gene

b)

mRNA

c)

ATP

d)

thymine

79.

During the final stages of human gestation, receptors for the hormone oxytocin increase on the smooth muscle cells of the uterus. The release of oxytocin during labor stimulates the smooth muscle tissue in the wall of the uterus. The vigorous contraction of the uterine smooth muscle helps push the baby through the birth canal so that delivery can occur. This process involves the interaction of which organ systems?

a)

Endocrine and muscular only

b)

Endocrine and reproductive only

c)

Endocrine, muscular, and reproductive

d)

Endocrine, reproductive, and excretory

80.

The diagram represents one way an enzyme can be inhibited. Which statement explains the effect of an inhibitor on an enzyme?

a)

A substrate will be able to bond with the enzyme.

b)

The enzyme will likely be attacked by immune cells

c)

The enzyme will be unable to produce more enzymes.

d)

A substrate will be unable to attach to the enzyme.

81.

The 1918 influenza epidemic killed between 50 million and 100 million people worldwide. THis epidemic happened near the end of World War I. More people died from the influenza epidemic than were killed in the war. Which of the following explains why this virus was so deadly worldwide?

a)

Infected soldiers returning from the war spread the virus when they coughed.

b)

Food was scarce because of the war, so people were undernourished, and their immune systems were weakened.

c)

Medical personnel often became ill as a result of exposure to airborne virus particles.

d)

All of the above

82.

process by which green plants and some other organisms make sugars and release oxygen using light energy, carbon dioxide, and water

a)

photosynthesis

b)

aerobic cellular respiration

c)

homeostasis

d)

evolution

83.

energy-releasing process that occurs in the mitochondria of eukaryotic cells and requires oxygen

a)

aerobic cellular respiration

b)

photosynthesis

c)

homeostasis

d)

evolution

84.

This image summarizes the process of....

a)

photosynthesis

b)

aerobic cellular respiration

85.

This image summarizes the process of .....

a)

aerobic cellular respiration

b)

photosynthesis

86.

Energy is produced during cellular respiration in the form of.....

a)

ATP

b)

ADP

c)

AMP

d)

None of these

87.

Where does photosynthesis occur?

a)

chloroplasts

b)

chlorophyll

c)

cytoplasm

d)

mitochondria

88.

Enzymes are....

a)

proteins

b)

lipids

c)

carbohydrates

d)

nucleic acids

89.

Enzymes slow down chemical reactions.

a)

yep

b)

nope

90.

Does an enzyme change during a chemical reaction?

a)

yes

b)

no

91.

The names of enzymes often end in....

a)

-ase

b)

-ose

c)

-tion

d)

-are

92.

Label the products

a)

A

b)

B

c)

C

d)

D

93.

Label the substrate.

a)

A

b)

B

c)

C

d)

C

94.

Label the active site.

a)

A

b)

B

c)

C

d)

D

95.

Label the enzyme.

a)

A

b)

B

c)

C

d)

D

96.

The products of photosynthesis are the reactants in aerobic cellular respiration.

a)

yep

b)

nope

97.

Cells are made of tissues.

a)

True

b)

False

98.

makes certain hormones and involved with regulation

a)

endocrine system

b)

muscular system

c)

respiratory system

d)

nervous system

99.

Carries materials (oxygen, hormones, etc) all over the body

a)

circulatory system

b)

digestive system

c)

reproductive system

d)

skeletal system

100.

Mechanically breaks down food in stomach

a)

muscular system

b)

endocrine system

c)

immune system

d)

circulatory system

101.

Chemically breaks down food with water, acid, & enzymes

a)

digestive system

b)

muscular system

c)

skeletal system

d)

excretory system

102.

helps your body fight against pathogens (bacteria, viruses, etc)

a)

immune system

b)

reproductive system

c)

endocrine system

d)

lymphatic system

103.

Which system?

a)

circulatory system

b)

excretory system

c)

nervous system

d)

integumentary system

104.

Which system?

a)

digestive

b)

skeletal

c)

integumentary

d)

muscular

105.

Which system?

a)

endocrine

b)

lymphatic

c)

excretory

d)

digestive

106.

Which system?

a)

excretory

b)

respiratory

c)

nervous

d)

lymphatic

107.

What transports water to the leaves in the shoot system of plants?

a)

xylem

b)

phloem

c)

pistil

d)

stamen

108.

What transports sugars and nutrients throughout a plant?

a)

phloem

b)

xylem

c)

stamen

d)

root system

109.

female reproductive organ in a flower

a)

pistil

b)

stamen

c)

root system

d)

shoot system

110.

male reproductive organ in a flower

a)

stamen

b)

pistil

c)

xylem

d)

phloem

111.

regulation of conditions within an organism or system which allows for stable, "normal" internal equilibrium

a)

homeostasis

b)

natural selection

c)

catalysis

d)

protein synthesis

112.

This internal feedback mechanism decreases the effect of a stimulus.

a)

negative feedback

b)

positive feedback

113.

This internal feedback mechanism increases the effect of a stimulus.

a)

positive feedback

b)

negative feedback

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