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Semester 1 Review
Life Science Unit 4 Lesson 1a
Attendance Link: http://goo.gl/forms/JuXhvHo3Go
Expectations
• Required Class Connects
– Tuesday, Wednesday, & Thursday
– 1:30-2:30 pm
• Be active and participate in class.
• Be respectful to your classmates
• Be positive in the chat box and use it correctly.
• Have a working microphone!
– You will need it during the lessons and break out rooms.
• If you have a question, please place it in the chat box and repost it if I
don’t see it.
Objectives
• Use taxonomic organization to identify and compare different
organisms.
• Describe how an organism displays each of the seven characteristics
of life and how it must overcome challenges of life.
• Describe how chemical functions of organisms start and are carried
out within a cell and how material moves in and out of the cell.
• Draw and label the parts of different cells and compare and
contrast them.
• Identify the cell as the basic unit of structure and function in all
living things.
• Compare major features and functions of animal systems and plant
systems.
• Compare and contrast single-celled organisms and multicellular
organisms, including advantages of each.
Which statement is true about a cell?
A.
B.
C.
D.
Organs make all of the cells in an organism.
Cells depend on the brain to divide.
All cells come from other cells.
During adulthood, the body stops producing
cells.
What is an organism?
an individual animal, plant, or single-celled life form.
What makes something an organism?
It has to be alive.
Which example is
an organism?
A.
B.
C.
D.
Fungus
Granite
Ruby
Brain
cell
What are the two ways the plants reproduce?
Sexually
What is made by this type?
Seed(s)
Asexually
What is made by this type?
Spores
What is the advantage of producing a spore over a seed?
Spores can survive longer between creation and sprouting.
How does a
mushroom
reproduce?
A.
B.
C.
D.
It divides into acorns.
It splits in two.
It forms buds.
It produces spores.
A.
B.
C.
D.
A Venus flytrap produces flowers.
Which life characteristic does this
illustrate?
Homeostasis
Growth
Reproduction
Response to stimuli
How can we create a new breed of a cat?
By crossing two pure breed animals with the desired traits.
Why can the offspring survive?
Because all cats, no matter the breed, are still cats.
They are all in the same species. This means they have the
same # of chromosomes.
Which animal
could a bulldog
mate with to
produce offspring?
A.
B.
C.
D.
Tabby cat
Raccoon
Beaver
Sheepdog
Name the levels of taxonomy in order
from broadest to most narrow.
Kingdom, phylum, class, order, family, genus, species
The taxonomic reference for lemurs
is Eukarya, Animalia, Chordata,
Mammalia, Primate, Lemuridae,
Lemur, catta.
Lemurs belong to which phylum?
A.
B.
C.
D.
Chordata
Animalia
Lemur
Mammalia
Using the dichotomous key, which
class does this animal belong to?
A.
B.
C.
D.
Invertebrate
Mammalia
Reptiles
Fish
Which is NOT a kingdom in the
taxonomic classification system?
A.
B.
C.
D.
Plantae
Protista
Molds
Animalia
What are the main types of organic molecules that we need in our bodies?
Carbohydrate, Protein, Nucleic acid, and Lipids
Which molecules are shown below?
Which type of organic
molecule is wax?
A.
B.
C.
D.
Carbohydrate
Protein
Nucleic acid
Lipid
Which structural characteristic is found
in both prokaryotic cells and
eukaryotic cells?
A.
B.
C.
D.
Circular DNA
A nucleus
Lysosomes
A cell membrane
Which best describes the function of
the mitochondria in cells?
A.
B.
C.
D.
Transports materials in and out of the cell
Maintains homeostasis
Creates energy for cellular use
Acts as a structural support for the cell
What is the result of mitosis?
A.
B.
C.
D.
Two genetically identical nuclei
Four genetically identical nuclei
One sperm and one egg
Two sperm cells and two eggs
In plants, cellulose is a rigid tube that
allows plants to maintain their form.
Which similar structure and support
system is found in insects?
A.
B.
C.
D.
Musculoskeleton
Cytoskeleton
Exoskeleton
Endoskeleton
Think about what it takes to stand up and walk across the room.
What body systems are directly being used.
Skeleton and muscular systems
What systems are being affected?
Immune, circulatory, digestive, respiratory, etc.
How do the muscles in the human
body help with movement?
A. The ligaments on the muscles push the bones
apart.
B. Muscles contract and thus pull on bones to
cause movement.
C. They help the bones bend.
D. They squeeze the bones.
Which animal uses its skin for
respiration?
A.
B.
C.
D.
Pelican
Lion
Toad
Mackerel
Which structures make it immediately
possible for the exchange of gases to
occur in a plant?
A.
B.
C.
D.
Stomata
Leaves and flowers
Roots and petals
Stems and petals
Assignment
• We will go over part b tomorrow.
• Make sure you are keeping up your progress in
the OLS.
• After we review tomorrow, you will have until
we get back on Jan 5th to get Units 1-4
mastered.