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sciq
What falls roughly in the middle of the electromagnetic spectrum, having shorter wavelengths and higher frequencies than microwaves, but not as short and high as x rays?
ultraviolet light
light
gamma rays
radio waves
light
sciq
What were the first forms of life on earth?
protists
aniryotes
eukaryotes
prokaryotes
prokaryotes
sciq
What molecules are usually insoluble in water?
polar
ions
non-polar
acids
non-polar
m1_mnlp
A bag contains the letters of LETSPLAY. Someone picks at random 4 letters from the bag without revealing the outcome to you. Subsequently you pick one letter at random among the remaining 4 letters. What is the entropy (in bits) of the random variable that models your choice? Check the correct answer.
$2$
$ rac{11}{4}$
$\log_2(7)$
$\log_2(8)$
$ rac{11}{4}$
sciq
What protects reptiles from drying out?
sweat
hairs
skin
scales
scales
sciq
Displacement is a vector quantity, which means it has both direction and what else?
rate
radiation
waves
magnitude
magnitude
sciq
What happens when antibodies are transferred to a person who has never been exposed to the pathogen?
acquired immunity
passive immunity
allergic reaction
active disease
passive immunity
sciq
The golgi apparatus works like a mail room by receiving and sending what?
acids
enzymes
proteins
particles
proteins
sciq
When a lower energy level is ______ electrons are added to the next higher energy level.
empty
full
ready
unbalanced
full
m1_mnlp
Your input is "Distributed Information Systems". Your model tries to predict "Distributed" and "Systems" by leveraging the fact that these words are in the neighborhood of "Information". This model can be:
Word Embeddings
Bag of Words
kNN
LDA
Word Embeddings
sciq
What is formed from an alcohol that loses water?
alkenes
alcohols
amines
Bonds
alkenes
sciq
What is liquid water falling from the sky called?
snow
clouds
rain
evaporation
rain
sciq
Around 97% of all water on earth is what type of water?
salt water
fresh water
rivers water
excess water
salt water
sciq
What process do all species use to make the next generation?
differentiation
separation
variation
reproduction
reproduction
sciq
In humans, each set of chromosomes contains 22 of these and 1 sex chromosome?
chromatids
autosomes
centrosomes
genes
autosomes
sciq
What do farmers use greenhouses for?
to decrease the growing season
to predict the growing season
to extend the growing season
to allow the growing season
to extend the growing season
sciq
Unlike archaea and eukaryotes, bacteria have a cell wall made of what?
phospholipids
peptidoglycan
hydrogen
substrates
peptidoglycan
sciq
Plants, algae and bacteria are all examples of what type of organism?
microbes
skeletal
unicellular
photosynthetic
photosynthetic
sciq
Proto-oncogenes are positive cell-cycle regulators but when mutated, they can become what?
microbes and cause cancer
oncogenes and cause cancer
bacteria and cause cancer
cultigens and cause cancer
oncogenes and cause cancer
sciq
What is the process in which organisms reproduce sexually by joining gametes called?
fertilization
propagation
migration
stimulation
fertilization
sciq
One species benefits while the host species is harmed in what type of relationship?
amensalism
fungal
mutualism
parasitism
parasitism
sciq
What does magma that cools underground form?
plates
intrusions
cracks
anomalies
intrusions
sciq
Rubbing your hands together warms them by converting work into what energy?
kinetic energy
thermal energy
motion energy
layer energy
thermal energy
sciq
How many neutrons do 99% of carbon atoms have?
eight
sixteen
five
six
six
sciq
A homogeneous mixture with tiny particles in it is known as what?
solution
element
structure
plasmid
solution
sciq
How are the number of moles of carbon dioxide gas calculated?
stoichiometry
relativistic
phytochemistry
casuistry
stoichiometry
sciq
Series and parallel circuits are two basic types of what?
electric circuits
chemical circuits
mechanical circuits
mutual circuits
electric circuits
sciq
Metabolic cooperation between different prokaryotic species often occurs in surface-coating colonies. what are these colonies called?
biofilms
lichens
eukaryotes
plankton
biofilms
sciq
What is the photosynthesis factory of the plant?
stamen
genome
chloroplast
pistil
chloroplast
sciq
What explains why two different species cannot occupy the same niche in the same place for very long?
evolution
survival exclusion princple
natural selection
competive exclusion princple
competive exclusion princple
sciq
What is the measure of the force of gravity pulling down on an object called?
volume
mass
weight
factor
weight
sciq
What type of resource is limited in supply and cannot be replaced except over millions of years?
natural resource
renewable energy
human resources
capital resources
natural resource
sciq
Generators usually transform kinetic energy into what kind of energy?
subsequent energy
nuclear energy
potential energy
electrical energy
electrical energy
sciq
What is the term for the temperature at which a solid changes into a liquid?
the pressure point
the starting point
the melting point
the mixture point
the melting point
sciq
What type of reproduction do fungi engage in?
ephemeral
microscopic
sexual
asexual
asexual
sciq
Chemical equations in which heat is shown as either a reactant or a product are called what?
thorium equations
feedstock equations
thermochemical equations
hydroelectric equations
thermochemical equations
sciq
Hydrogen peroxide is commonly sold as a 3% by volume solution for use as a what?
surfactant
detergent
antiseptic
disinfectant
disinfectant
sciq
In what year was the hardy-weinberg theorem formulated?
1908
1901
1928
1938
1908
sciq
Along with nerve tissue, what kind of tissue are lecithins and cephalins important constituents of?
heart tissue
skin tissue
lung tissue
brain tissue
brain tissue
sciq
Of course, a net external force is needed to cause any acceleration, just as newton proposed in his second law of what?
gravity
land
speed
motion
motion
sciq
Lymph vessels are like blood vessels, except they move what instead of blood?
marrow
air
lymph
sperm
lymph
sciq
What type of cells in the body fluids and tissues of most animals specifically interact with and destroy pathogens?
White blood cells
Microglial cells
Dendritic cells
immune cells
immune cells
sciq
With a shape that specially suits its function of sending nerve signals to other cells, the human nerve cell is an example of what?
specialization
maturation
evolution
adaptation
specialization
sciq
What do we call animals that have a backbone and belong to the phylum chordata?
mammals
invertebrates
vertebrates
organelles
vertebrates
sciq
A visual "copy" of an object that is formed by reflected or refracted light is called what?
image
photo
mirror
instance
image
sciq
What term is used to describe a cross between two individuals that have different traits?
assimilation
purebreed
fraternization
hybridization
hybridization
sciq
This calcification prevents diffusion of nutrients into the matrix, resulting in what dying and the opening up of cavities in the diaphysis cartilage?
nanoparticles
chondrocytes
keratinocytes
phytocytes
chondrocytes
sciq
What science is the study of the occurrence, distribution, and determinants of health and disease in a population?
histology
physiology
toxicology
epidemiology
epidemiology
sciq
Thermodynamics do not give us any insight into what attribute of spontaneous processes?
rate
increase
acceleration
decrease
rate
sciq
All of the land drained by a river system is called its basin, or what "wet" term?
river bank
groundwater
wetlands
watershed
watershed
sciq
Wind power, solar power, hydropower, and geothermal power are called renewable sources of energy or what other term?
specific energy
conservative energy
alternative energy
mandatory energy
alternative energy
sciq
What type of friction is friction that acts on objects when they are sliding over a surface?
sliding friction
rolling friction
spreading friction
static friction
sliding friction
sciq
What title is used to describe health professionals who use nonsurgical techniques to help patients with musculoskeletal system problems that involve the bones, muscles, ligaments, tendons, or nervous system?
dentist
podiatrist
physical therapist
chiropractor chiropractors
chiropractor chiropractors
sciq
What is captured by the sticky structure at the top of the style called the stigma?
fungi
sunlight
pollen
precipitation
pollen
sciq
Receptors for what chemical messengers recognize molecules with specific shapes and side groups, and respond only to those that are recognized?
acids
chromosomes
hormones
enzymes
hormones
sciq
The curie (ci) is one measure of the rate of what?
spin
growth
division
decay
decay
sciq
What is the type of cell division that produces gametes?
electrolysis
budding
meiosis
mitosis
meiosis
sciq
Name what nutrient cycling is strongly regulated by.
sunlight
vegetation
abundance
elevation
vegetation
sciq
What landform occurs most often along plate boundaries?
volcanoes
sinkholes
dunes
geysers
volcanoes
sciq
Unlike free-living species of flatworms that are predators or scavengers, what forms feed from the tissues of their hosts?
aquatic
parasitic
herbiverous
mutualistic
parasitic
sciq
Biomass can also be processed to make what kind of fuel?
biofuel
fossil
hydrogen fuel
gasoline
biofuel
sciq
Stars are born in clouds, and they form and grow dense due to what force?
gravity
kinetic energy
coreolis effect
Big Bang theory
gravity
sciq
A colloid is a homogeneous mixture with medium-sized what?
atoms
particles
solutions
molecules
particles
sciq
Chloroplasts, leucoplasts and chromoplasts are found in what type of cells?
man-made cells
animal cells
plant cells
nitrogen cells
plant cells
sciq
What type of plants supplement their mineral nutrition by digesting animals?
perennials
carnivorous
annuals
herbivorous
carnivorous
sciq
A major step in animal evolution was the evolution of what rigid rod that runs the length of the body?
limbic system
mitochondria
notochord
endoderm
notochord
sciq
What types of bonds hold together positive metal ions and their valence electrons?
ionic bonds
covalent bonds
metallic bonds
toxic bonds
metallic bonds
sciq
What is used during filtration to push fluids and solutes, from higher pressure areas to lower pressure areas?
constructs pressure gradient
hydrostatic pressure gradient
magnesium pressure gradient
limited pressure gradient
hydrostatic pressure gradient
sciq
The strength of what depends on the concentration of hydrogen ions it produces when dissolved in water?
acid
the solution
the base
electricity
acid
sciq
Banging on a drum is an example of which type of energy?
mechanical
solar.
potential
molecular
mechanical
sciq
How many valence electrons do neutral phosphorus atoms have?
four
three
five
nine
five
sciq
What energy is stored in a person or object?
mechanical energy
stored energy
kinetic energy
potential energy
potential energy
m1_mnlp
Select the \emph{incorrect} statement.
An ideal $I$ of commutative ring $R$ is a subgroup closed under multiplication by all elements of $R$.
Given a prime $p$, we have $a^{p} = a$ for every $a \in \mathbb{Z}_p$.
The order of an element is always multiple of the order of its group.
Any element of order $\varphi(n)$ is a generator of $\mathbb{Z}_n^*$.
The order of an element is always multiple of the order of its group.
sciq
The extracellular fluid is in contact with the axon membrane only at what location?
Sensory Receptors
the nodes
dendrites
synapses
the nodes
sciq
Models may be physical, conceptual, or what else?
theoretical
mathematical
fundamental
experimental
mathematical
sciq
Of the three basic types of emissions, which has the highest penetrating power?
ultraviolet radiation
fluid radiation
chemical radiation
gamma radiation
gamma radiation
sciq
During asexual reproduction, fungi produce haploid spores by what process involving a haploid parent cell?
divergence
mitosis
evaporation
osmosis
mitosis
sciq
What do you call an incomplete outer shell of an atom?
valence shell
nucleic shell
helium shell
motile shell
valence shell
sciq
Covalent solids are formed by networks or chains of atoms or molecules held together by what?
ionic bonds
gravitational bonds
bail bonds
covalent bonds
covalent bonds
m1_mnlp
Consider a hash function $H$ with $n$ output bits. Tick the \emph{incorrect} assertion.
Due to birthday paradox, an output collision of $H$ can be found much faster than with running time $2^n$.
It is possible to find an output collision of $H$ with $O(2^{\frac{n}{2}})$ memory and $O(2^{\frac{n}{2}})$ running time.
It is possible to find an output collision of $H$ with $O(2^{\frac{n}{2}})$ memory and $O(1)$ running time.
It is possible to find an output collision of $H$ with $O(1)$ memory and $O(2^{\frac{n}{2}})$ running time.
It is possible to find an output collision of $H$ with $O(2^{\frac{n}{2}})$ memory and $O(1)$ running time.
sciq
Water behind a dam has potential energy. moving water, such as in a waterfall or a rapidly flowing river, has this?
kinetic energy
residual energy
thermal energy
compression energy
kinetic energy
sciq
What is the first part of the large intestine, where wastes enter from the small intestine?
cecum
spleen
tectum
sacrum
cecum
sciq
What are the three ways to classify matter based on how light interacts with it?
transitive, opaque, translucent
transparent, opaque, translucent
opaque, invisible, visible
extensive , opaque , translucent
transparent, opaque, translucent
sciq
Which organ is a wide tube connecting the small intestine with the anus?
rectum
stomach
large intestine
jejunum
large intestine
sciq
A light bulb converts electrical energy to light and what?
kinetic energy
visible energy
chemical energy
thermal energy
thermal energy
sciq
Which nerve carries electrical signals from the rods and cones to the brain?
axon
optic
auditory
neurotransmitter
optic
sciq
How do prokaryotes reproduce?
unusually
inorganically
asexually
sexually
asexually
sciq
What is the chief organ of the urinary system?
bladder
lung
liver
kidney
kidney
sciq
What is the group of all the eukaryotes that are not fungi, animals, or plants called?
filamentous
protists
lizards
arthropods
protists
sciq
Hemoglobin is responsible for transporting what within our blood?
water
dioxide
nitrogen
oxygen
oxygen
sciq
The laws of what field of science apply to galaxies and atoms, an indication of the underlying unity in the universe?
anthropology
geology
physics
astronomy
physics
sciq
What type of gases are the least reactive of all elements?
noble
humble
lucky
brave
noble
sciq
When what element - whose name means "light bringing" - was first isolated, scientists noted that it glowed in the dark and burned when exposed to air?
mercury
phosphorus
neon
oxygen
phosphorus
sciq
Mercury is small, rocky and covered with what objects?
diamonds
volcanoes
rivers
craters
craters
sciq
How many eyelid membranes do frogs have?
four
one
two
three
three
sciq
Copper oxide is a result of what two substances mixing?
copper and gas
crystal and oxygen
metal and oxygen
copper and oxygen
copper and oxygen
sciq
How are the major families of organic compounds characterized?
their functional groups
Their optic groups
their visual groups
their thermal groups
their functional groups
sciq
Panting allows dogs to get rid of what?
calories
excess body heat
accumulated toxins
fur balls
excess body heat
sciq
The enzyme pepsin works only in the presence of what?
carbohydrates
sodium
oxygen
acid
acid
sciq
What is controlled by regulatory proteins that bind to regulatory elements on dna?
mRNA
gene transcription
substance transcription
amino acids
gene transcription