WorksheetsScience Unit 3 lessons 1 & 3
Total questions: 25
Worksheet time: 13mins
The basic unit of structure and function is
the nucleus
a cell
a single celled organism
Mitochondria ____________________
directs a cell's functions
releases energy
protects the cell
The nucleus___________
is also called the "power house" of a cell.
controls all of the cell's activities.
controls what enters and leaves the cell.
The cell membrane______________
protects the cell
controls what enters and leaves the cell
relases energy for the cell to do its job.
True/false
Only animal cells have a cell wall.
True
False
Chloroplasts are found only in plant cells.
True
False
Both mitosis and meosis are processes of cell division.
True
False
During ______________ cells divide to become more cells.
mitosis
meiosis
During _____________, egg and sperm cells are produced.
mitosis
meiosis
A characteristic passed from parent to offspring in humans is called ___________
a recessive trait
a dominant trait
an inherited trait
Only 1 factor for a _______________ trait needs to be present to pass the trait on to offspring.
recessive
dominant
Factors from 2 parents need to be present for this trait to be passed on to offspring.
dominant
recessive
Choose the correct answer for each trait.
freckles
dominant
recessive
tallness in pea plants
dominant
recessive
blue eyes
recessive
dominant
curly hair
recessive
dominant
Cells work together to form_____________
body systems
organs
tissue
organ systems
There are _______ types of tissue.
2
4
3
5
Several tissues that work together to do a certain job are called___
organs
organ systems
cells
Choose the types of tissue present in each body part.
brain & spine
muscle
nervous
connective
Large parts of the body like legs, arms, and your heart
nervous
epithelial
connective
muscle
skin
connective and muscle
nervous and epithelial
nervous, epithelial, connective, and muscle
muscle
Which is not a part of the ear?
anvil
stirrup
cochlea
olfactory bulb
Light enters the eye through the____
retina
lens
pupil
cochlea
The senses of smell and taste both___________
allow your taste buds to work.
allow food to be digested.
detect chemicals in the air.
