1.
1 One characteristic of all living things is that they
(1) develop organ systems
(2) produce identical offspring
(3) maintain internal stability
(4) synthesize only inorganic matter
Hint
Half-n-half Clue
2.
2 The diagram below represents interactions
between organisms in a stable ecosystem.
Which statement correctly describes organisms
in this ecosystem?
(1) Organisms in level B obtain their energy
directly from the Sun.
(2) Organisms in level C obtain their nutrients
directly from organisms in level D.
(3) Organisms in level A are herbivores.
(4) Organisms in level D are heterotrophic.
Half-n-half Clue
3.
3 Due to overfishing, the number of fish in the
ocean could drastically decrease. This will cause
(1) an increase in the stability of the oceans
(2) an increase in the salt content of the oceans
(3) a decrease in the stability of the oceans
(4) a decrease in the oxygen available in the oceans
Half-n-half Clue
4.
4 Which substance can enter a cell by diffusion
without having to be digested?
(1) water (3) starch
(2) protein (4) fat
Half-n-half Clue
5.
5 A single-celled organism is represented below.
Structure X carries out a function most similar to
which structure in a human?
(1) lung (3) ovary
(2) brain (4) heart
Half-n-half Clue
6.
6 Parrots are tropical birds. However, in some
areas of New York City, some parrots have been
able to survive outdoors year-round. These
parrots survive, while most others cannot, due to
(1) overproduction of offspring
(2) extinction of previous species
(3) asexual reproduction of parrots with a mutation
(4) a variation that allows these parrots to live in
colder climates
Half-n-half Clue
7.
7 Changing one base in a gene could have the
most direct effect on the
(1) function of the membrane of a cell
(2) sequence of building blocks of a protein
found in a cell
(3) number of mitochondria in a cell
(4) type of carbohydrates synthesized by a cell
Half-n-half Clue
8.
8 An alteration of genetic information is shown
below.
A-G-T-A-C-C-G-A-T â A-G-T-G-A-T
This type of alteration of the genetic information
is an example of
(1) deletion (3) substitution
(2) insertion (4) recombination
Half-n-half Clue
9.
9 The table below shows adaptations in two organisms.
The presence of these adaptations is most likely the result of
(1) reproductive technology (3) asexual reproduction
(2) natural selection (4) human interference
Half-n-half Clue
10.
10 The diagram below represents an activity that occurs in the human body.
This diagram best illustrates
(1) active transport (3) synthesis of nutrients
(2) maintenance of homeostasis (4) differentiation
Half-n-half Clue
11.
11 In which row in the chart below is a human action correctly paired with its environmental impact?
Half-n-half Clue
12.
12 A laboratory technique is represented in the
diagram below. Letter A represents a process.
Which specific chemicals are needed to successfully carry out the process shown at A?
(1) receptor molecules (3) enzymes
(2) carbohydrates (4) starch molecules
Half-n-half Clue
13.
13 The diagram below represents genetic material.
The expression of the section labeled X may be
modified by
(1) temperature, only
(2) asexual reproduction
(3) the environment
(4) pH, only
Half-n-half Clue
14.
14 Characteristics that are harmful to a species tend
to decrease in frequency from generation to
generation because these characteristics usually
(1) have a high survival value for the species
(2) have a low survival value for the species
(3) are inherited by more individuals
(4) affect only the older members of the population
Half-n-half Clue
15.
15 Which situation results in a characteristic that is
inheritable?
(1) A limb is lost when two marine organisms fight.
(2) A puppy learns to beg for food by watching
an older dog perform tricks.
(3) A gene is inserted into a bacterium, allowing
the organism to produce insulin.
(4) A random mutation causes the immediate
death of a microbe.
Half-n-half Clue
