Living Environment Regents Review Question Preview (ID: 61869)
Review Test For Summer School Topic 1-4.
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The current knowledge concerning cells is the result of the investigations and observations of many scientists. The work of these scientists forms a well-accepted body of knowledge about cells. This body of knowledge is an example of a
a) hypothesis
b) controlled experiment
c) theory
d) research plan
Which statement best expresses a basic scientific assumption?
a) Interpretation of experimental results has provided explanations for all natural phenomena.
b) If a conclusion is valid, similar investigations by other scientists should result in the same conclusion.
c) For any conclusion to be valid, the design of the experiment requires that only two groups be compared.
d) After a scientist formulates a conclusion based on an experiment, no further investigation is necessary.
In an appropriately designed experiment, a scientist is able to test the effect of
a) a single variable
b) multiple variables
c) the hypothesis
d) scientific observations
A fully functioning enzyme molecule is arranged in a complex three-dimensional shape. This shape determines the
a) specific type of molecule it interacts with during a reaction
b) rate at which the enzyme breaks down during a reaction it regulates
c) pH of all body systems
d) temperature of the products of the reaction it regulates
Which elements are present in all organic compounds?
a) hydrogen and oxygen
b) nitrogen and oxygen
c) nitrogen and carbon
d) hydrogen and carbon
An energy-rich organic compound needed by organisms is
a) water
b) oxygen
c) salt
d) glucose
Nutrition involves those activities by which organisms
a) remove cellular waste products
b) obtain and process materials needed for other activities
c) exchange gases with their environment
d) absorb and circulate materials
The delivery of oxygenated blood to all tissues around the body involves what two life functions?
a) Digestive and circulatory
b) Digestive and respiratory
c) Respiratory and circulatory
d) Excretory and circulatory
When the human body is responding to stress, the hormone adrenaline is released. A short time later, the body returns to normal. This is an example of how a human
a) reacts to an antibody
b) develops genetic variation in body cells
c) maintains cellular organization
d) maintains dynamic equilibrium
Excretion is best described as the removal of
a) metabolic wastes from a cell
b) toxic wastes by the process of cyclosis
c) water molecules from dipeptide hydrolysis
d) undigested material from the digestive tract
A dead or weakened pathogen used to establish immunity would most likely be found in
a) an antibiotic
b) a pesticide
c) a toxin
d) a vaccine
Which disorder could develop in the human body when the immune system attacks a usually harmless environmental substance?
a) AIDS
b) cancer
c) an infection
d) an allergy
Which sequence represents structures organized from most complex to least complex?
a) chloroplast ⇨ guard cell ⇨ leaf ⇨ oak tree
b) guard cell ⇨ chloroplast ⇨ leaf ⇨ oak tree
c) oak tree ⇨ leaf ⇨ guard cell ⇨ chloroplast
d) oak tree ⇨ guard cell ⇨ leaf ⇨ chloroplast
Secondary sex characteristics in males are regulated by
a) testosterone
b) amylase
c) acetylcholine
d) estrogen
Which part of the blood is correctly paired with its function?
a) platelets – produce antibodies
b) plasma – transports wastes and hormones
c) white blood cells – carry oxygen
d) red blood cells – fight infection
Which cell process occurs only in organisms that reproduce sexually?
a) mutation
b) replication
c) meiosis
d) mitosis
The greatest degree of genetic variation would be found in offspring that result from
a) binary fission
b) fertilization
c) regeneration
d) grafting
A sperm cell of an alligator has 16 chromosomes. What is the total number of chromosomes normally present in a stomach cell of this alligator?
a) 8
b) 16
c) 32
d) 48
The reproductive cycle in females is regulated primarily by
a) estrogen and testosterone
b) estrogen and progesterone
c) progesterone and insulin
d) progesterone and testosterone
Human reproduction usually involves
a) internal fertilization and internal development
b) external fertilization and external development
c) internal fertilization and external development
d) external fertilization and internal development
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