WorksheetsGrade 7 Life Science
Total questions: 50
Worksheet time: 25mins
What is the first step to the scientific method?
develop a question
state a hypothesis
analyze data
What is the last step to the scientific method?
conduct an experiment
analyze data
make conclusions
What is the scientific method?
The process of experimentation
playing with your dog
making up lists
A hypothesis is a/an
prediction
possible explanation
educated guess
all of the above
A controlled variable in an experiment...
is constant and stays the same
changes with the experiment
Which is used for genetic inheritance
energy pyramid
pedigree chart
food web
The human body has thousands of..
chloroplasts
nuclei
genes
All chromosomes contain..
eggs
sperm
genes
Food is carried to the cells of the body through
nerves
blood
nerves
Asexual Reproduction involves
1 parent
2 parents
Sexual Reproduction involves
1 parent
2 parents
Asexual offspring are
different from the parent
the same as the parent
Flowers & trees are called autotrophs because they
like cars
make their own food
make wait own water
Traits are passed from one generation to the next through the transfer of
DNA
calories
ice cream cones
The sum of all chemical reactions are known as
evolution
metabolism
respiration
external means
outside
inside
internal means
outside
inside
Human reproduction is preformed
internally
externally
both internal and external
What is photosynthesis?
When plants use sunlight for food
When plants have a party
The process of an experiment
In photosynthesis, light energy is absorbed by plants and then
animals breathe out carbon dioxide
plants release water into soil
Carbon dioxide and water are used to make sugar
A student says that this graduated cylinder has 50 ml of water. This is a..
prediction
observation
a theory
Genetics is
The passing of traits from 1 organism to another
the mix of elements
the process where plants make food from the sun
1 unit of hereditary information
chloroplast
gene
hair
Which process is a cause of variation in a species?
regulation
cellular respiration
sexual reproduction
What was added to this cell to make the nuclei change color?
water
stain
fruit punch
The hydra reproduces ASEXUALLY.
The offspring and the parent has what percentage of the same genetic makeup?
25%
50%
100%
The hydra reproduces ASEXUALLY.
This means that the offspring will always look
the same as the parent
different than the parent
This picture is testing a persons...
reflex
bone strength
tool strength
A person touches a hot pan. This is them
sensing and responding to an external environment
sensing and responding to an internal environment
changing and controlling the environment
A group of cells that work together to perform a similar function.
hydra
chromosome
tissue
organ
What process is being shown in the diagram?
fertilization
metamorphasis
budding
A human body cell contains 46 chromosomes. A human sex cell contains 23 chromosomes which is
twice the amount of the body cell
1/2 the amount of the body cell
the same amount of the body cell
Organs develop in humans
before birth
after birth
when playing on the playground
The difference between a plant and animal cell, is that a animal cell does not have
cell wall
nucleus
cell membrane
Pure dominant
bb
Bb
BB
pure recessive
Ss
SS
ss
Which genotype represents a hybrid trait?
Bb
BB
bb
This diagram represents
asexual reproduction
sexual reproduction
When the sperm meets the egg in sexual reproduction, what is that called?
Embryo
Fertilization
Offspring
What process is being shown in the diagram?
respiration
cell divison
transport
Levels of organization in human body.
Simplest to Most Complex
organ - tissue - organ system - cell
cell - tissue - organ - organ system
cell - organ system - tissue - organ
These two students are
measuring reaction time
playing with a stick
misbehaving in class
What is the volume of the rock?
6 cm3
16 mL
22 mL
5 cm3
If a student wanted to find the mass of the rock, they would use a
ruler
scale
triple beam balance
A microscopes magnification power is 2X and the magnification power of the eyepiece is 10X, the total magnification is
20X
2X
200X
A punnett square is used to determine
the possibility of having twins
see what superpowers the offspring will have
the probability of a trait being passed on
All living things need
candy
cookies
water
books
When oxygen molecules move from high concentration to low concentration.
active transport
diffusion
the great move
The lungs get rid of
urine
blood
carbon dioxide
A giant plastic animal cell with removable parts is an example of a
experiment
model
controls
