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Worksheets7th Grade Science Review - Semester 1
Total questions: 96
Worksheet time: 3hrs 24mins
Name
Class
Date
1.
What body system is for support, protection, and creates new blood cells?
a)
skeletal system
b)
muscular system
c)
circulatory system
d)
integumentary system
2.
What body system is for support, protection, and creates new blood cells?
a)
skeletal system
b)
muscular system
c)
circulatory system
d)
integumentary system
3.
What body system is for support, protection, and creates new blood cells?
a)
skeletal system
b)
muscular system
c)
circulatory system
d)
integumentary system
4.
What is responsible for delivering oxygen and removing carbon dioxide from the body?
a)
cell nucleus
b)
excretory system
c)
nervous tissue
d)
respiratory system
5.
The main purpose of the ____________ system is to break food particles into pieces that can be used.
a)
circulatory
b)
respiratory
c)
digestive
d)
skeletal
6.
The circulatory system uses _________ to deliver oxygen to the rest of the body.
a)
blood cells
b)
lungs and nose
c)
blood vessels
d)
brain and spinal cord
7.
What body system makes your body move?
a)
Circulatory
b)
Respiratory
c)
Skeletal
d)
Muscular
8.
What body system removes the waste from your body?
a)
Circulatory
b)
Excretory
c)
Digestive
d)
Respiratory
9.
This system carries oxygen, nutrients and waste around the body.
a)
Lymphatic
b)
Urinary
c)
Respiratory
d)
Circulatory
10.
What is the main function of the respiratory system?
a)
to provide oxygen and remove carbon dioxide from the body
b)
to bring oxygen to the body
c)
to break down food and absorb nutrients
d)
to remove oxygen from the body and deliver carbon dioxide
11.
What is the function of the digestive system?
a)
to break down and absorb nutrients
b)
to support and protect our bodies
c)
to produce vitamin D
d)
to help us move
12.
The main function of the excretory system is....
a)
To filter waste from the blood stream and carry it outside of the body.
b)
To transport nutrients to the body.
c)
To break down nutrients for absorption.
d)
To provide structure and support for the body.
13.
Your skin and hair are parts of your ___________
a)
endocrine system
b)
excretory system
c)
lymphatic system
d)
integumentary system
14.
The skin is the major organ in which system?
a)
Integumentary
b)
Muscular
c)
Endocrine
d)
Immune
15.
Which system uses hormones to regulate body activities?
a)
Integumentary
b)
Urinary
c)
Endocrine
d)
Immune
16.
Which organelle is only found in a plant cell?
a)
nucleus
b)
chloroplast
c)
mitochondria
d)
cell membrane
17.
Directs all cell activities through the DNA located there.
a)
Lysosomes
b)
Nucleus
c)
ribosomes
d)
Mitochondria
18.
Which part of the cell is often called "the brain of the cell"?
a)
nuclear membrane
b)
endoplasmic reticulum
c)
nucleus
d)
mitochondria
19.
What is found in both plant and animal cells but is much larger in plant cells?
a)
Nucleus
b)
Mitochondria
c)
Chloroplast
d)
Vacuole
20.
This organelle takes food and turns it into ENERGY for plant and animal cells.
a)
Chloroplast
b)
Mitochondria
c)
Lysosome
d)
Ribosome
21.
The site of photosynthesis
a)
ribosome
b)
mitochondria
c)
chloroplast
d)
nucleus
22.
I am the outer most layer of an animal cell. What am I?
a)
cell wall
b)
nucleus
c)
cell membrane
d)
cell skin
23.
A rigid layer that lies outside the cell's membrane is...
a)
Cytoskeleton
b)
Cilia
c)
Cell Wall
d)
Flagella
24.
What organelle is called the "powerhouse" of a cell?
a)
Endoplasmic Reticulum
b)
Nucleus
c)
Mitochondria
d)
Nucleolus
25.
What is the gel-like substance inside of cells called?
a)
photoplasm
b)
photosynthesis
c)
cytoskeleton
d)
cytoplasm
26.
Which is organized correctly from SMALLEST to LARGEST?
a)
cell, tissue, organ, organ system, organism
b)
organism, organ system, organ, tissue, cell
c)
tissue, cell, organ system, organ, organism
d)
organ system, organ, organism, tissue, cell
27.
Which of these structures are NOT found in animal cells?
a)
chloroplast and cell wall
b)
nucleus and ribosomes
c)
mitochondria and cytoplasm
d)
cell membrane and golgi bodies
28.
All living things are made up of...
a)
cells
b)
cell tissues
c)
organ
d)
organ systems
29.
Which of the following is NOT a cell theory.
a)
All non-living things are made of cells
b)
All cells come from pre-existing cells
c)
Cells are the basic unit of structure and function of all living things
30.
All cells come from___________ cells.
a)
pregnant
b)
pre-existing
c)
paternal
d)
pin size
31.
What is the basic structural and functional unit of all living things?
a)
atom
b)
cell
c)
molecule
d)
human
32.
What is one way in which all living things on Earth are alike?
a)
All living things have hair.
b)
All living things are made of cells and come from other cells.
c)
The cells of all living things have chloroplast.
d)
All living things can move.
33.
Which of the following statements is not part of the cell theory?
a)
Cells are the basic unit of structure and function in all living things.
b)
All cells are produced from other cells.
c)
Only animal cells are composed of cells.
d)
All living things are composed of cells.
34.
What process occurs when light energy is captured in autotrophs and converted into sugar?
a)
Photosynthesis
b)
Cellular Respiration
35.
What is photosynthesis?
a)
The process in which humans eat their food
b)
When a photographer takes a photo.
c)
To get your pictures from the photo lab.
d)
The process in which plants make their food.
36.
Why do plants wilt?
a)
low turgor pressure
b)
high turgor pressure
c)
too much water
d)
no cell membrane
37.
How does turgor pressure relate to a plant wilting?
a)
A wilting plant = high turgor pressure
b)
A wilting plant = high photosynthesis
c)
A wilting plant = low turgor pressure
d)
They are not related
38.
Often called the powerhouse of the cell because it converts energy for cell use.
a)
Mitochondria
b)
Ribosomes
c)
Chloroplast
d)
LCV
39.
Find the total magnification:
Eyepiece = 10X
Objective lens = 55X
Eyepiece = 10X
Objective lens = 55X
a)
10x
b)
55x
c)
65x
d)
550x
40.
This part gives plant cells a rigid structure.
a)
Cell wall
b)
Organelle
c)
Chloroplast
d)
Cytoplasm
41.
Which organelle belongs in plant cells only?
a)
Cell Membrane
b)
Mitochondrion
c)
Chloroplast
d)
Nucleus
42.
Which organelle belongs in plant cells only?
a)
Cytoplasm
b)
Mitochondrion
c)
Cell Wall
d)
Nucleus
43.
I store water in both plant and animal cells. What am I?
a)
cytoplasm
b)
ribosomes
c)
vacuole
d)
lysosomes
44.
What kind of cell is this?
a)
Plant
b)
Animal
c)
Bacterial
d)
Gross
45.
Organelle
a)
material inside the cell membrane- but not including the nucleus.
b)
single-celled microorganism that lacks a nucleus.
c)
organism whose cells contain nuclei
d)
specialized structure that performs important cellular functions within a eukaryotic cell.
46.
What part of the cell uses light energy and makes food -a sugar- called glucose from water and carbon dioxide in photosynthesis?
a)
Endoplasmic Reticulum
b)
Mitochondria
c)
Chloroplasts
d)
Vacuoles
47.
What level of organization would a plant leaf fall into?
a)
Cell
b)
organ
c)
organ system
d)
tissue
48.
What Kind Of Reproduction Happens Were A New Type Of An Existing Species, Grow?
a)
Grafting
b)
Cutting
c)
Pasting
49.
What Kind Of Reproduction Do Yeast Perform?
a)
Spore Formation
b)
Budding
c)
Grafting
d)
Rhizomes
50.
The production of a new organism from two parents
a)
Sexual Reproduction
b)
Asexual Reproduction
c)
Vegetative Propagation
d)
Fertilization
51.
Which reproduction involves flowers, seeds, and fruit?
a)
sexual reproduction
b)
asexual reproduction
c)
cloning
52.
Which reproduction involves flowers, seeds, and fruit?
a)
sexual reproduction
b)
asexual reproduction
c)
cloning
53.
Which statement is always true about asexual reproduction?
a)
it always requires 2 parents
b)
all the offspring looks just like the parent
c)
it happens by joining two single-celled organisms
d)
an embryo is formed in the process
54.
An advantage of sexual reproduction is ______
a)
less energy needed
b)
variation in offspring
c)
no variation in offspring
d)
more energy needed
55.
One disadvantage of sexual reproduction is ____
a)
more energy needed
b)
less energy needed
c)
clone of parents
d)
variation of offspring
56.
What is an advantage of asexual reproduction
a)
variation of offspring
b)
no variation of offspring
c)
less energy needed
d)
more energy needed
57.
What is an advantage of asexual reproduction?
a)
variation in offspring
b)
no variation in offspring
c)
more energy required
d)
more offspring can be created in less time
58.
Spirogyra is an example of what kind of reproduction.
a)
Aneomic
b)
Budding
c)
Fragmentation
59.
Many wind-pollinated flowers have __________.
a)
feathery stigmas and light pollen.
b)
feathery stigmas and sticky pollen.
c)
short stigmas and light pollen.
d)
short stigmas and sticky pollen.
60.
The pigment in chloroplasts that absorbs light energy is called
a)
stroma
b)
stomata
c)
chlorophyll
d)
chlorofluorocarbon
61.
The reactants in photosynthesis are
a)
carbon dioxide and water
b)
water and oxygen
c)
oxygen and glucose
d)
glucose and carbon dioxide
62.
The products in photosynthesis are
a)
carbon dioxide and water
b)
water and oxygen
c)
oxygen and glucose
d)
glucose and carbon dioxide
63.
Which of the following is the best type of light for photosynthesis?
a)
White
b)
Red
c)
Blue
d)
Green
64.
How does Carbon Dioxide enter a plants leaves? Through the:
a)
Thylakoid
b)
Stoma
c)
Stroma
d)
Chlorophyll
65.
Which of the following is the correct equation for PHOTOSYNTHESIS?
a)
CO2 + light + H2O --> O2 + Sugar
b)
CO2 + sugar + H2O --> O2 + light
c)
O2 + light + H2O --> CO2 + Sugar
d)
CO2 + O2 + H2O --> Light+ Sugar
66.
What are the products of photosynthesis?
a)
water and carbon dioxide
b)
oxygen and glucose
c)
oxygen and carbon dioxide
d)
oxygen and water
67.
Most plants appear green because chlorophyll
a)
absorbs green light.
b)
absorbs violet light.
c)
reflects green light.
d)
reflects violet light.
68.
Which organelle performs PHOTOSYNTHESIS?
a)
Chloroplast
b)
Mitochondria
69.
What process is the diagram representing?
a)
Photosynthesis
b)
Soil development
c)
Plant reproduction
d)
Nitrogen Cycle
Nitrogen cycle
Nitrogen cycle
70.
Look at the image
What substances and organelle work together to absorb sunlight to perform photosynthesis in this example?
What substances and organelle work together to absorb sunlight to perform photosynthesis in this example?
a)
cell wall and chloroplast
b)
mitochondria and water
c)
vacuole and carbon dioxide
d)
chloroplast and chlorophyll
71.
What gas goes into the plant before photosynthesis?
a)
Carbon Dioxide
b)
Carbon Monoxide
c)
Oxygen
d)
Nitrogen
72.
Which plant part absorbs water and nutrients?
a)
Leaf
b)
Stem
c)
Roots
d)
Flower
73.
What does xylem carry up the stem?
a)
Water
b)
Nutrients
c)
Water and Nutrients
d)
None of the above
74.
What does phloem carry up the stem
a)
Sugar
b)
Water
c)
Oxygen
d)
All of the above
75.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
76.
AA and Aa always show up as
a)
dominant
b)
recessive
77.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
78.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
79.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
d)
B
80.
In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the genotype of any red-flowering plant resulting from this species?
a)
rr
b)
R
c)
RR
d)
RR or Rr
81.
Which of the characteristics is a lion least likely to pass on to its offspring?
a)
fur color
b)
length of tail
c)
scars on leg
d)
body size
82.
In a heterozygous genotype, the ___________ allele takes over in the phenotype.
a)
recessive
b)
dominant
c)
lower case letter
d)
both
83.
What you see, or the physical appearance is called
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
84.
T - tall and t = short
In the punnett square below, what belongs in the missing square
In the punnett square below, what belongs in the missing square
a)
tt
b)
Tt
c)
Bb
d)
TT
85.
B = brown eyes
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.
a)
they have same phenotype and genotype
b)
they have different genotypes and phenotypes
c)
they have same phenotype but different genotypes
d)
they have same genotype but different phenotypes
86.
aa always shows up as
a)
dominant
b)
recessive
87.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
88.
Which of the following is homozygous recessive?
a)
Tt
b)
tt
c)
TT
d)
T
89.
Complex molecule that carries genetic information that defines an organism's traits. It is stored in the nucleus.
a)
DNA
b)
protein
c)
RNA
d)
glucose nucleic acid (GNA)
90.
How many alleles (letters) do each person carry for a trait?
a)
1
b)
2
c)
3
d)
4
91.
How many alleles (letters) does a child get from each parent for each trait?
a)
1
b)
2
c)
3
d)
4
92.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
93.
If a heterozygous tall pea plant is crossed with a short pea plant, what are the possible genotypes of the future offspring?
a)
100% Tt
b)
50% Tt, 50% tt
c)
75%Tt, 25%tt
d)
25%TT, 50%Tt, 25%tt
94.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
95.
How many females are in this pedigree?
a)
3
b)
4
c)
6
d)
7
96.
If T=Tall & t=short, what is the genotypic ratio?
a)
1:3
b)
3:1
c)
1:2:1
d)
2:2
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