NEW
Font size
S
M
L
XL
WorksheetsSTAAR REVIEW
Total questions: 36
Worksheet time: 36mins
Name
Class
Date
1.
Which organic macromolecules are composed of chains of amino acids that join to form the structural components of organisms?
a)
carbohydrates
b)
nucleic acids
c)
proteins
d)
lipids
2.
Which cell part is present in eukaryotic cells, but not in prokaryotic cells?
a)
cell membrane
b)
cell wall
c)
cytoplasm
d)
nucleus
3.
The ability to maintain a stable internal environment is called ________________.
a)
Metabolism
b)
Mitosis
c)
Heterozygous
d)
Homeostasis
4.
What is one way that a lysogenic infection differs from a lytic infection?
a)
A lysogenic virus does not act on bacteria as a lytic virus does.
b)
A lysogenic virus can remain in the host DNA for a longer period without becoming active.
c)
A lysogenic virus contains RNA instead of DNA.
d)
A lysogenic virus directs the production of new viruses right away.
5.
Which of the following is a possible result of a disruption in the cell cycle?
a)
cancer
b)
photosynthesis
c)
cellular respiration
d)
protein synthesis
6.
Which of the following is the only characteristic shared by living cells and viruses?
a)
the presence of carbohydrates
b)
the ability to reproduce
c)
the presence of the nucleic acid
d)
a cell membrane
7.
This cell is undergoing mitosis. What stage of mitosis is shown?
a)
prophase
b)
metaphase
c)
anaphase
d)
telophase
8.
This diagram shows the cell cycle.
Which of the following activities occur in the S phase?
Which of the following activities occur in the S phase?
a)
Replication of the DNA
b)
Growth of the cell
c)
Formation of the mitotic spindle
d)
Breakdown of the nuclear membrane
9.
Which of the following macromolecules are a prominent part of animal tissues that function in insulation, helping animals conserve heat?
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic acids
10.
The diffusion of water through a semi-permeable membrane is called?
a)
Osmosis
b)
Cell wall
c)
Diffusion
d)
Respiration
11.
An animal cell placed in a hypertonic (salty) solution will
a)
Shrink
b)
Swell
c)
Stay the same
12.
The diffusion of water through a semi-permeable membrane is called?
a)
Osmosis
b)
Cell wall
c)
Diffusion
d)
Respiration
13.
Having a standard taxonomic system benefits the scientific community by allowing scientists from all over the world to do which of the following?
a)
Have a common system for the classification of locations containing fossils
b)
Use a similar system to classify the impact of removing species from ecosystems
c)
Have a common understanding in the classification of organisms
d)
Understand how other scientists classify predator–prey relationships
14.
Which of these statements best explains the process of energy conversion that takes place in the mitochondria?
a)
Energy is required for carbon dioxide molecules to form six-carbon sugar molecules.
b)
Water molecules and radiant energy are necessary for anaerobic respiration to take place.
c)
Oxygen molecules release energy in the form of heat during combustion reactions.
d)
The energy in the bonds of glucose molecules is transferred to the phosphate bonds in ATP.
15.
Leaves are part of a plant’s shoot system. The xylem tissue in leaves transports —
a)
the bacteria needed for nitrogen fixation in root nodules
b)
the wax required to coat the surface of actively growing tissue
c)
the water and minerals that are absorbed by the roots
d)
the oxygen that regulates the rate of carbohydrate production
16.
Some organisms have genes that improve their ability to survive and reproduce. If the genes also help their offspring survive and reproduce, then which of the following will most likely increase?
a)
The frequency of the genes in one individual
b)
The frequency of the genes in the population
c)
The number of genes in one chromosome
d)
The number of genes in the species
17.
The overgrowth of algae poses a major problem for coral reefs. Intensive fishing is one factor that contributes to algae overgrowth because it does which of the following?
a)
Allows more sunlight to be available to algae
b)
Inhibits the spread of pathogens in algae colonies
c)
Reduces the number of organisms that feed on algae
d)
Increases the competition between different algae species
18.
Enzymes are proteins that help increase the rate of chemical reactions inside cells. These proteins are composed of many simpler molecules called amino acids. Which of the following suggests that the shape of an enzyme determines the enzyme’s function?
a)
Enzymes are specific to a substrate
b)
Enzymes can operate in a wide range of conditions.
c)
Enzymes are activated by neighboring molecules.
d)
Enzymes can be found in all life-forms.
19.
Which of the following correctly describes how a diagram of cellular respiration would differ from a diagram of photosynthesis?
a)
The cellular-respiration diagram would show electromagnetic waves as the final product.
b)
The cellular-respiration diagram would show glucose as the main source of energy.
c)
The cellular-respiration diagram would show energy stored in large protein molecules.
d)
The cellular-respiration diagram would show water as the main source of chemical energy.
20.
Which of the following are missing from the food web shown above?
a)
producers
b)
decomposers
c)
omnivores
d)
carnivores
21.
The concept of gene flow is demonstrated when a cow is driven off from its herd, joins another herd, and reproduces. When the cow contributes to the gene pool of the new herd, which of these most likely increases?
a)
natural selection
b)
genetic variation
c)
environmental fitness
d)
reproductive mutations
22.
Crossing-over between nonsister chromatids during meiosis is significant in heredity. This process most likely leads to an increase in which of the following?
a)
The expression of dominant traits
b)
Number of gametes
c)
The occurrence of polyploidy
d)
Genetic variation
23.
Characteristics such as a widow’s peak or attached earlobes are determined by the genetic code. Which components of DNA are referred to as the genetic code?
a)
Phosphate groups
b)
Nitrogenous bases
c)
Deoxyribose sugars
d)
Hydrogen bonds
24.
Plant hormones serve as chemical messengers between cells and tissues. Auxin is a plant hormone that causes the cells on the shady side of a plant shoot to elongate. The response enabled by auxin is known as —
a)
geotropism
b)
thigmotropism
c)
phototropism
d)
photosynthesis
25.
A student is studying the ecology of a playa lake, which forms after a rainfall in a dry lake bed. The table lists the organisms that the student observed.
Which level of biological organization has the student described in the table?
Which level of biological organization has the student described in the table?
a)
Biosphere
b)
Organelle
c)
Ecosystem
d)
Community
26.
A student sets up a compost bin outdoors. Inside the bin microorganisms convert the student’s vegetable and paper scraps into rich fertilizer. Which of the following best describes the role that these microorganisms play in natural habitats?
a)
The microorganisms help balance the numbers of producers and consumers.
b)
The microorganisms help keep nutrients cycling through the ecosystem.
c)
The microorganisms turn solar energy into sugars.
d)
The microorganisms function as autotrophs.
27.
What are the three main parts of a nucleotide?
a)
carbon, hydrogen, and oxygen
b)
phosphate, sugar, and nitrogen base
c)
phosphate, sulfate, and nitrate
d)
adenine, thymine, and uracil
28.
In DNA, adenine pairs with _______, while guanine pairs with _______.
a)
uracil / cytosine
b)
thymine / uracil
c)
thymine / cytosine
d)
adenine / guanine
29.
What is the name of the sugar in DNA?
a)
deoxyribose
b)
ribose
c)
glucose
d)
galactose
30.
What is the name of the sugar in RNA?
a)
deoxyribose
b)
ribose
c)
glucose
d)
maltose
31.
Which nitrogen base does RNA have instead of thymine?
a)
adenine
b)
cytosine
c)
guanine
d)
uracil
32.
The process in which a section of DNA is used to produce a copy of mRNA is called:
a)
transcription
b)
translation
c)
mutation
d)
inheritance
33.
Use the chart to find to amino acid that corresponds to the codon GGA:
a)
Alanine
b)
Glutamic Acid
c)
Lysine
d)
Glycine
34.
What type of mutation is shown in the diagram?
a)
substitution
b)
insertion
c)
deletion
d)
no change
35.
What is the process shown in the diagram?
a)
transcription
b)
translation
c)
mutation
d)
transformation
36.
The 2 sex chromosomes found in a human female are:
a)
XX
b)
XY
Reset
