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What is the primary purpose of human reproduction?
To ensure the continuation of the species through the production of offspring.
Asexual reproduction results in offspring that are __________ to the parent organism.
genetically identical.
In sexual reproduction, genetic material is contributed by __________ parents.
two.
The process by which a sperm cell fertilizes an egg cell is called __________.
fertilization.
A major advantage of sexual reproduction is __________.
genetic diversity.
The simplest form of asexual reproduction is __________.
binary fission.
In sexual reproduction, offspring inherit traits from both __________ and __________ parents.
mother; father.
The __________ is a table that organizes all known elements based on their properties.
periodic table.
Elements in the same group of the periodic table have similar __________.
chemical properties.
What subatomic particle has a positive charge?
Proton.
_____________ are neutral particles found in the nucleus of an atom.
Neutrons.
The atomic number of an element is determined by the number of __________ it contains.
protons.
The regions surrounding the nucleus of an atom where electrons are found are called __________.
energy levels or electron shells.
A substance made up of only one type of atom is called an __________.
element.
Human bodies are primarily composed of which type of atom?
Carbon, Hydrogen, Nitrogen, Oxygen.
Ohmโs law states that the current is __________ to the voltage and inversely proportional to the resistance.
directly proportional.
The unit of measurement for electrical resistance is the __________.
Ohm.
Current is defined as the flow of __________ through a conductor.
electric charge.
In a series circuit, the total resistance is __________ the sum of all individual resistances.
equal to.
The life cycle of a star begins with a __________.
nebula.
What process do stars undergo to generate energy?
Nuclear fusion.
When a star exhausts its nuclear fuel, it may become a __________.
supernova.
The distance from the Earth to the Moon is approximately __________ kilometers.
384,400.
Which measurement unit is commonly used to express astronomical distances?
Light-years.
Space technology includes the development and use of __________.
satellites.
The conditions needed to support life include __________.
water, suitable temperature, and nutrients.
The ability to use distorted light from gravity around stars to infer their mass is a study of __________.
gravitational lensing.
A __________ diagram shows the connections between components in an electric circuit.
circuit.
In a parallel circuit, the voltage is __________ across each component.
the same.
Mitosis is the process of __________.
cell division.
Genetically modified organisms (GMOs) are created using __________ techniques.
biotechnology.
The stages of mitosis include prophase, __________, anaphase, and telophase.
metaphase.
The life cycle of a star can end with a black hole or a __________.
neutron star.
Measuring distances in space often relies on the use of __________.
parallax.
The phenomena that can occur due to gravitational effects of celestial bodies are known as __________.
gravitational effects.
What is the role of the nucleus in an atom?
It contains protons and neutrons.
Which group on the periodic table contains elements that are highly reactive?
Alkali metals.
What is the main purpose of the reproductive system in humans?
To produce offspring.
Which reproductive structure produces sperm in males?
Testes.
Which reproductive structure supports the development of a fetus in females?
Uterus.
Plant reproduction can happen both sexually and __________.
asexually.
The branches of science that study electricity include __________ and electronics.
electrodynamics.
Electrical energy is measured in __________.
Joules.
Distinguish between voltage and current: voltage is the potential difference, while current is the __________ of charge.
flow.
Transistors are used in circuits to control __________.
current.
In the context of stars, a supernova can lead to the creation of __________ elements.
heavy.
Plants can reproduce sexually through the process of __________.
pollination.
The study of atomic structure is important for understanding __________ reactions.
chemical.
Which atomic particle has a negative charge?
Electron.
The energy needed to move one coulomb of charge through an electric potential difference of one volt is called __________.
one Joule.
The wavelength of light emitted by stars can help astronomers determine their __________.
temperature.
Conductors allow __________ to flow easily through them.
electricity.
The __________ is a visual representation of the arrangement of elements based on atomic number.
periodic table.
An element in Group 17 of the periodic table is known as a __________.
halogen.
The life cycle of a star, from birth to death, can span billions of __________.
years.
A circuit diagram uses symbols to represent __________ in a circuit.
components.
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