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6th Science 3rd Quarter Exam
6th Science 3rd Quarter Exam
29
Science
6th Grade
03/10/2014

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Term
a female sex cell
Definition
egg
Term
an early stage in the development of an organism
Definition
embryo
Term
a stage in the development of an organism that follows the embryo stage
Definition
fetus
Term
one of the units that make up a chromosome; genes determine the traits an offspring inherits from its parent or parents
Definition
gene
Term
a chemical substance that acts as a messenger, causing a change in organs and tissues in the body
Definition
hormones
Term
the state of physical development when a person becomes capable of producing offspring
Definition
puberty
Term
a male sex cell
Definition
sperm
Term
reproduction that involves the joining of a male sex cell and a female sex cell
Definition
sexual reproduction
Term
a threadlike structure in the nucleus of a cell; it carries the genes that determine the traits an offspring inherits from its parent or parents
Definition
chromosome
Term
a cycle of approximately 28 days during which an egg is released by the ovary and, if not fertilized, leaves the body with other tissue and blood
Definition
menstrual cycle
Term
a gene that has control over how a trait is expressed
Definition
dominant trait
Term
a gene that is able to control how a trait is expressed only when paired with another recessive gene
Definition
recessive gene
Term
the process by which a sperm and an egg unite to form a cell that will develop into a new individual
Definition
fertilization
Term
a gland that produces hormones and releases them directly into the bloodstream
Definition
endocrine gland
Term
a fertilized egg cell
Definition
zygote
Term
What is the heart is responsible for?
Definition
Providing oxygen and nutrients to our cells and carrying away waste from these active cells.
Term
The heart is an __________ muscle.
Definition
involuntary
Term
The _________ separates the two sets of chambers of the heart.
Definition
septum
Term
Beginning at the left side of your heart, fresh, clean _____________ is pumped around our bodies.
Definition
oxygen-rich blood
Term
The cells creates __________ and other wastes that must be removed to keep the cells healthy.
Definition
carbon dioxide
Term
The blood is responsible for picking up waste, delivering it to the _________ where, except for the carbon dioxide, it is removed from the blood.
Definition
kidney
Term
The ________ with its load of carbon dioxide returns to the right side of the heart.
Definition
blood
Term
The blood is then pumped to the ________ to get rid of the carbon dioxide and to pick-up fresh oxygen.
Definition
lungs
Term
The heart beats on average ________ times per minute.
Definition
70
Term
An adult heart pumps _________ of blood daily.
Definition
7,500 liters
Term
It takes __________ to pump blood to every cell in your body.
Definition
20 seconds
Term
The sound in the heart comes from the _______ shutting inside the heart.
Definition
valves
Term
The most common place used to find the pulse is the _________.
Definition
wrist
Term
What can you do to keep your heart healthy?
Definition

1. Exercise at least 15-20 minutes a day

2. Eat healthy foods

3. Stay away from smoking

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