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Ejaculation occurs when muscle contractions propel sperm from where?
A. cervix
B. epididymes
C. urinary track
D. penis
Answer: | B |
Adult sea stars have what kind of symmetry?
A. radial symmetry
B. biological symmetry
C. hydrological symmetry
D. skeletal symmetry
Answer: | A |
The four types of light receptors include different types of cones and what else?
A. neutrons
B. quarks
C. joints
D. rods
Answer: | D |
In what do substances combine chemically to form a new substance?
A. compound
B. component
C. element
D. suspension
Answer: | A |
What is the colorless gas with a sharp, pungent odor used in smelling salts?
A. hydrogen
B. ammonia
C. helium
D. nitrogen
Answer: | B |
Groupings of related organs in the human body are referred to as "organ" what?
A. bodies
B. conditions
C. functions
D. systems
Answer: | D |
The enzymes that participate in fatty acid catabolism are located in what?
A. nucleus
B. carbohydrates
C. mitochondria
D. atoms
Answer: | C |
Which organ of the body do large tapeworms attack or block?
A. liver
B. kidneys
C. heart
D. intestines
Answer: | D |
The sternum and 12 pairs of ribs with their costal cartilages make up what?
A. the core
B. chest cage
C. heart cage
D. thoracic cage
Answer: | D |
Which lipid is mainly responsible for narrowing arteries and causing the disease atherosclerosis?
A. cholesterol
B. unsaturated fat
C. monoglyceride
D. saturated fat
Answer: | A |
Physical or chemical changes are generally accompanied by a transfer of what?
A. color
B. shape
C. pressure
D. energy
Answer: | D |
What is the term for a dynamic equilibrium that is maintained in body tissues and organs?
A. homogeneity
B. metabolism
C. dormancy
D. homeostasis
Answer: | D |
What has a pseudocoelom and hydrostatic skeleton?
A. roundworms
B. vertebrates
C. omnivores
D. gymnosperms
Answer: | A |
In what two ways are volcanic eruptions characterized?
A. explosive and non-explosive
B. localized and general
C. minor and explosive
D. non-explosive and serious
Answer: | A |
Each enhancer is made up of short dna sequences called what?
A. pisttal control elements
B. fibrous control elements
C. distal control elements
D. electrolysis control elements
Answer: | C |
For a star to form, what force pulls gas and dust into the center of the nebula?
A. motion
B. weight
C. centrifugal force
D. gravity
Answer: | D |
What do you call elements that contain only atoms of one type of element?
A. reactive elements
B. native elements
C. typical elements
D. noble gases
Answer: | B |
The organ systems of the body work together to carry out life processes and maintain what?
A. movement
B. homeostasis
C. freshness
D. consciousness
Answer: | B |
This process of combining the wave functions for atomic orbitals is called what?
A. hydration
B. activation
C. assimilation
D. hybridization
Answer: | D |
Carbon is a nonmetal with a significantly higher electronegativity; it is therefore more likely to accept electrons in what kind of reaction?
A. catalyst reaction
B. reversable reaction
C. isotope reaction
D. redox reaction
Answer: | D |
What is denoted by the number above the chemical symbol of each element in a modern periodic table?
A. atomic weight
B. electron count
C. metallic number
D. atomic number
Answer: | D |
What does the tires meeting the road cause when a car accelerates?
A. vibration
B. friction
C. thrust
D. erosion
Answer: | B |
What gas is contributing to the greenhouse effect?
A. sodium chloride
B. carbon dioxide
C. nitrogen
D. oxygen
Answer: | B |
A complex interactions of hormones result in an edible fruit that entices animals that help disperse what?
A. seeds
B. water
C. pests
D. rocks
Answer: | A |
What are the cells caused that parasites spread through their host?
A. sporozoites
B. prokaryotes
C. protists
D. fungi spores
Answer: | A |
When can mutations occur in genes?
A. during rna replication
B. after rna replication
C. after dna replication
D. during dna replication
Answer: | D |
The sites of protein synthesis are tiny structures called?
A. protons
B. ribosomes
C. crystals
D. prokaryotes
Answer: | B |
Mollusks, annelids, and arthropods are considered what?
A. protostomes
B. protisines
C. micelles
D. detritivores
Answer: | A |
One of the simplest machines is the lever, which is a rigid bar pivoted at a fixed place called what?
A. wheel
B. caliper
C. sling
D. fulcrum
Answer: | D |
In essence, a virus is simply a nucleic acid surrounded by what?
A. a polypeptide
B. a polymer coat
C. a protein coat
D. a membrane coat
Answer: | C |
How does the number of protons compare to the number of electrons in an electrically neutral atom?
A. they are triple
B. they are double
C. they are half
D. they are equal
Answer: | D |
The scientific method is a method of research with defined steps that include experiments and careful what?
A. observation
B. estimation
C. consideration
D. discovery
Answer: | A |
The protist life cycle benefits by including what forms of reproduction?
A. asexual and biological
B. ideal and sexual
C. atypical and sexual
D. asexual and sexual
Answer: | D |
With what does cytokinins act in concert to stimulate cell division and influence the pathway of differentiation?
A. hormone
B. ribosomes
C. auxin
D. dna
Answer: | C |
Puberty and other physical changes occurs during which stage of development?
A. childhood
B. infancy
C. adolescence
D. adulthood
Answer: | C |
What makes organic compounds ubiquitous is the chemistry of their what?
A. dioxide shell
B. carbon shell
C. dioxide core
D. carbon core
Answer: | D |
What type of drugs can increase water loss by interfering with the recapture of solutes and water from the forming urine?
A. hallucinogens
B. disassociates
C. diuretics
D. sedatives
Answer: | C |
This type of tissue consists of bundles of xylem and phloem and transports fluids throughout the plant.
A. cytoplasm
B. dermal tissue
C. vascular tissue
D. nonvascular tissue
Answer: | C |
What is the scientific name of the thighbone, the longest, heaviest, and strongest bone in the body?
A. femur
B. tibia
C. humerus
D. fibula
Answer: | A |
What determines which type of precipitation falls?
A. air currents
B. air pressure
C. air temperature
D. ground temperature
Answer: | C |
Algae is a promising alternative to traditional crops for what type of fuels?
A. non-renewable
B. fossil
C. fertilizer
D. biofuel
Answer: | D |
Cancers derived from epithelial cells are referred to as what?
A. carcinomas
B. adenomas
C. caricatures
D. nodules
Answer: | A |
Vibrating objects such as drumheads produce what?
A. heat
B. sound energy
C. light
D. negative ions
Answer: | B |
What two element makes up a hyrdocarbon?
A. carbon and hydrogen
B. nitrogen and carbon
C. hydrogen and carbonite
D. helium and carbon
Answer: | A |
What are monosaccharides and disaccharides also called?
A. simple sugars
B. simple chemicals
C. basic sugars
D. complex sugars
Answer: | A |
Terrestrial biomes are associated with land, while aquatic ones are associated with what?
A. water
B. plants
C. blood
D. air
Answer: | A |
Different shapes often correlate with different what in cells?
A. systems
B. types
C. enzymes
D. functions
Answer: | D |
What structure is found at the top of the head of the sperm that helps it penetrate and fertilize the egg?
A. axial filament
B. acrosome
C. centriole
D. terminal disc
Answer: | B |
What makes up most of biological tissues?
A. muscle
B. bone
C. air
D. water
Answer: | D |
What occurs when some substances change chemically to other substances?
A. spontaneous mutation
B. toxic reaction
C. chemical reaction
D. hormonal reaction
Answer: | C |
What type of butterfly do birds avoid eating since it makes them sick?
A. monarch butterflies
B. pyralidae
C. sphingidae
D. noctuidae
Answer: | A |
Birds possess a cloaca, a structure that allows water to be reabsorbed from waste back into this?
A. skin
B. intestines
C. blood stream
D. eggs
Answer: | C |
What contain organelles common to other cells, such as a nucleus and mitochondria, and also have more specialized structures, including dendrites and axons?
A. follicles
B. muscle cells
C. neurons
D. blood cells
Answer: | C |
Hurricanes and winter storms both develop from what, which often form when the jet stream dips south in the winter?
A. typhoons
B. tides
C. waves
D. cyclones
Answer: | D |
Which body system controls all the others by sending electrical messages?
A. the nervous system
B. the endocrine system
C. the localized system
D. the specialized system
Answer: | A |
What occurs when water on the surface changes to water vapor?
A. oxidation
B. condensation
C. photosynthesis
D. evaporation
Answer: | D |
What is the position of rock layers and the relative ages called?
A. diffraction
B. bifurcation
C. metamorphism
D. superposition
Answer: | D |
What is the field of biology that focuses on the study of inheritance in humans?
A. computational biology
B. generational biology
C. relational biology
D. human genetics
Answer: | D |
The acidity of a solution is typically assessed experimentally by measurement of its what?
A. density
B. color
C. mass
D. ph
Answer: | D |
Where is chemical energy stored?
A. cell wall
B. ribosomes
C. atom bonds
D. nucleus
Answer: | C |
What kind of fuels include coal, oil, and natural gas?
A. fossil
B. ancient
C. storage
D. sediment
Answer: | A |
What do you call the slope that forms the edge of the continent?
A. the land slope
B. the continental slope
C. the cataclysmic slope
D. the prevalent slope
Answer: | B |
What do contour lines that are close together indicate?
A. steep slope
B. deep slope
C. flat slope
D. close slope
Answer: | A |
What is the most common type of cancer developed in children?
A. stomach cancer
B. leukemia
C. lung cancer
D. anemia
Answer: | B |
How many chambers are in the heart?
A. four
B. five
C. two
D. eight
Answer: | A |
The central vacuole maintains turgor pressure against what?
A. the cell addition
B. the cell wall
C. the cell move
D. the cell multiplication
Answer: | B |
In the small intestine, chyme mixes with bile, which emulsifies what substances?
A. sugars
B. fats
C. acids
D. proteins
Answer: | B |
Which electromagnetic waves are the most energetic of all electromagnetic waves?
A. ultraviolet rays
B. gamma rays
C. plasma rays
D. sunlight rays
Answer: | B |
Glycolysis harvests chemical energy by oxidizing glucose to what?
A. oxygen
B. cellulose
C. pyruvate
D. chlorophyll
Answer: | C |
What is the term for the most abundant species in a community, characterized by high competitive abilities?
A. dominant species
B. keystone species
C. carnivores
D. merging species
Answer: | A |
Salt-water biomes in the ocean are called what?
A. marine biomes
B. ocean biomes
C. marine species
D. marine organelles
Answer: | A |
What occurs before the endometrium thickens in estrous cycles?
A. ovulation
B. fertilization
C. pregnancy
D. copulation
Answer: | A |
Structures like the human tail bone and whale pelvis are called what?
A. parasitic structures
B. primordial structures
C. adaptations
D. vestigial structures
Answer: | D |
Hazardous waste is material that is toxic, chemically active, corrosive, or what?
A. flammable
B. inactive
C. organic
D. decomposed
Answer: | A |
Which component of the electron transport chain does cyanide inhibit?
A. adenosine diphosphate
B. mitochondrial matrix
C. cytochrome c oxidase
D. succinate dehydrogenase
Answer: | C |
Diseases of this system include epilepsy, strokes, and alzheimer’s disease
A. circulatory system
B. endocrine system
C. infectious system
D. nervous system
Answer: | D |
About how full is the outer energy level in metalloids?
A. half full
B. nearly empty
C. a quarter full
D. three-fourth full
Answer: | A |
Which chemical element is the basis of all life on earth?
A. carbon
B. hydrogen
C. oxygen
D. nitrogen
Answer: | A |
What structures of the cardiovascular system help regulate body processes by either constricting or dilating?
A. muscles
B. capillaries
C. cartilage
D. blood vessels
Answer: | D |
What is the term for the class of ectothermic, four-legged vertebrates that produce amniotic eggs?
A. mammals
B. Turtles
C. amphibians
D. reptiles
Answer: | D |
The goal of proteomics is to identify or compare what substances expressed from a given genome under specific conditions, study the interactions between them, and use the information to predict cell behavior or develop drug targets?
A. cells
B. rna
C. dna
D. proteins
Answer: | D |
Radiometric dating methods, such as carbon-14 dating depend on what type of decay?
A. microwave
B. carbon
C. radioactive
D. nuclear
Answer: | C |
What is the brightest star in the orion constellation?
A. sol
B. rigel
C. natel
D. omicron
Answer: | B |
Which organelle specific to plant cells is responsible for photosynthesis?
A. the lipid
B. the chloroplast
C. the vacuole
D. the mitochondria
Answer: | B |
What is another word for thermal energy?
A. temperature
B. humidity
C. solar
D. heat
Answer: | D |
Roots grow in length and width from the primary and secondary what?
A. pistil
B. leaf
C. meristem
D. frill
Answer: | C |
What often form symbiotic associations with much larger organisms?
A. viruses
B. eukaryotes
C. protists
D. prokaryotes
Answer: | D |
Name the fever that is caused by a virus that has antigens similar to molecules in human heart tissues.
A. chronic fever
B. Dengue fever
C. yellow fever
D. rheumatic fever
Answer: | D |
What is the smallest planet in our solar system?
A. Mars
B. mercury
C. Earth
D. Jupiter
Answer: | B |
What is the term for when a substance boils and changes to gas?
A. reaction point
B. changing point
C. boiling point
D. activation point
Answer: | C |
Where are hormones released?
A. lungs
B. liver
C. bloodstream
D. brain
Answer: | C |
The union of gametes is called?
A. migration
B. pollination
C. fusion
D. fertilization
Answer: | D |
What type of behavior occurs naturally in all animals of a given species?
A. learned
B. acquired
C. stimulated
D. innate
Answer: | D |
What parts of comets make them easy to see?
A. arcs and tails
B. novas and tails
C. craters and tails
D. comas and tails
Answer: | D |
What gives the body shape and support?
A. gravity
B. organs
C. muscles
D. skeleon
Answer: | D |
What do you call sound that has a wave frequency higher than the human ear can detect?
A. ultrasound
B. hypersonic sound
C. dynamic sound
D. supersonic sound
Answer: | A |
Plants not only contribute food but what else for organisms?
A. dioxide
B. carbon
C. oxygen
D. hydrogen
Answer: | C |
Substances that act as both weak acids and bases are said to be what?
A. amphiphilic
B. hygroscopic
C. amphoteric
D. atmospheric
Answer: | C |
What is the medical process of removing wastes and excess water from the blood by diffusion and ultrafiltration called?
A. digestion
B. arthritis
C. tumors
D. dialysis
Answer: | D |
What is the "a" horizon commonly known as?
A. crust
B. topsoil
C. core
D. sediment
Answer: | B |
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