Worksheets7th grade Finals
Total questions: 60
Worksheet time: 10mins
Name
Class
Date
1.
Fraternal twins are a result of separate union of ____ and _____.
a)
zygote and gamete
b)
sperm and egg
2.
A group of organisms that have identical genetic make-up are called...
a)
fraternal twins
b)
clones
3.
For how many years has biotechnology been used?
a)
thousands
b)
hundreds
4.
Mutations that are passed on to the following generation are called_______mutations
a)
germ
b)
lethal
5.
Any change in an organisms genetic material is a ________.
a)
mistake
b)
mutation
6.
This is a condition that affects the pigment producing cells in the skin causing it to lighten
a)
alopecia
b)
albinism
7.
A clone is produced
a)
asexually
b)
sexually
8.
Which affects more genes, a gene mutation or a chromosomal mutation?
a)
chromosomal
b)
gene
9.
Those with down syndrome have how many chromosomes on the 21st set?
a)
2 instead of three
b)
3 instead of 2
10.
What was the name of the first mammal ever cloned?
a)
Patsy
b)
Dolly
11.
Selective breeding can take years to accomplish--true or false?
a)
true
b)
false
12.
True or False--The life span of humans significantly decreased after the flood?
a)
false
b)
true
13.
True or False--Crossbreeding is guaranteed to produce what is intended?
a)
false
b)
true
14.
Mutations that result in death are called...
a)
germ mutations
b)
lethal mutations
15.
People with albinism often have problems with their _____.
a)
hearing
b)
eyesight
16.
The results from the asexual reproduction of a male and female haploid cell...
a)
gamete
b)
zygote
17.
The term for combing an egg with the sperm...
a)
nucleotide
b)
fertilization
18.
The process of regrowing missing body parts...
a)
duplication
b)
regeneration
19.
The process of forming 2 DNA molecules from one...
a)
replication
b)
modification
20.
This contains sugar, phosphate, and bases...
a)
nucleotide
b)
protein
21.
A cell divides its chromosomes during this phase...
a)
mitosis
b)
sexual reproduction
22.
The new cell that forms from the union of 2 gametes...
a)
nucleus
b)
zygote
23.
Before a cell divides, it makes a copy of its genes during this process...
a)
Telephase
b)
Interphase
24.
A cell that has 2 of each kind of chromosome is a...
a)
haploid
b)
diploid
25.
An octopus uses a _____to move quickly through the water.
a)
tentacles
b)
siphon
26.
Clams obtain food by _____it through the water.
a)
filtering
b)
pushing
27.
Since a grasshopper does not have an open circulatory system, it does not have____.
a)
blood
b)
capillaries
28.
A grasshopper develops with which kind of metamorphosis?
a)
complete
b)
incomplete
29.
Which of these is a mollusk?
a)
snail
b)
beetle
30.
How many pairs of legs do insects have?
a)
2 pairs
b)
3 pairs
31.
What gender is a worker bee?
a)
female
b)
male
32.
What is the name of the pupa stage of butterflies?
a)
chrysalis
b)
larva
33.
Lungs have many...
a)
capillaries
b)
arteries
34.
Snakes have ____hinged jaws
a)
double
b)
single
35.
All snakes are ...
a)
meat eaters
b)
leaf eaters
36.
True or False--turtles are born with gills.
a)
true
b)
false
37.
A fish moves by...
a)
flexing its entire body
b)
moving its dorsal
38.
What is a shark's skeleton made of?
a)
bone
b)
cartilege
39.
Components of a cell are called...
a)
organs
b)
organelles
40.
True or false--a snake molts its skin regularly.
a)
true
b)
false
41.
The center of the cell is called the...
a)
mitochondria
b)
nucleus
42.
Approximately how many cells are in the human body?
a)
trillions
b)
billions
43.
How many total chromosomes are in human DNA?
a)
46
b)
23
44.
What is the "ladder" of nucleotides and bases called?
a)
gametes
b)
double helix
45.
What is an attribute that applies to ALL birds?
a)
waterproof
b)
feathers
46.
The egg white is called...
a)
yolk
b)
albumen
47.
What organ stores food in a bird?
a)
stomach
b)
crop
48.
What are the small bumps on a bird's skin where the feathers grow?
a)
Papillae
b)
goosebumps
49.
The food reserve in a bird egg is called the _____.
a)
albumen
b)
yolk
50.
This gland produces milk in a female mammal.
a)
adrenal
b)
mammary
51.
The protein found in hair is called...
a)
carotene
b)
keratin
52.
This supplies oxygen to some developing mammals
a)
kidneys
b)
placenta
53.
These are the short, fluffy feathers that keep a bird warm...
a)
barbules
b)
down
54.
This animal is a marsupial...
a)
koala
b)
rabbit
55.
The structure that attaches the embryo to the placenta is called an...
a)
umbilical cord
b)
main artery
56.
Lampreys and Hagfish have no...
a)
hard skulls
b)
jawbone
57.
Most fish reproduce by...
a)
spawning
b)
swimming
58.
A factor in a habitat that restricts the growth or existence of an organism is known as a...
a)
massive extinction
b)
limiting factor
59.
True or false--it is easy to wake from hibernation.
a)
True
b)
False
60.
True or false--Both deoxygenated and oxygenated blood are red.
a)
true
b)
false
100 %
