WorksheetsCracking the AP Bio Exam
Total questions: 26
Worksheet time: 13mins
Name
Class
Date
1.
The resting membrane potential depends on:
I Active Transport
II Selective Permeability
III Differential distribution of ions across the axonal membrane
I Active Transport
II Selective Permeability
III Differential distribution of ions across the axonal membrane
a)
I
b)
I and II
c)
I III
d)
I, II, III
2.
The Krebs cycle occurs in:
a)
Mitochondrial Matrix
b)
Cytosol
c)
Inner Mitochondrial Membrane
d)
Outer membrane Space
3.
Mitosis and meiosis differ because meiosis
a)
Only includes one round of cell division
b)
Spearation of sister chromatids occur during the second division in meiosis whereas it'll occur in the first with mitosis.
c)
Chromosomes are replicated during interphase whereas mitosis replicates during prophase
d)
Spindle fibers form durig prophase in meiosis whereas meiosis fibers occur during metaphase.
4.
A feature of amino acids NOT found in carbohydrates are
a)
Nitrogen
b)
Carbon
c)
Hydrogen
d)
Oxygen
5.
Which is not a characteristic of bacteria?
a)
Circular double stranded DNA
b)
Membrane-bound cellular organelles
c)
Plasma membrane consisting of lipids and proteins
d)
Ribosomes that synthesize polypeptides.
6.
Which of the following best explains why a population is described as the evolutionary unit?
a)
Genetic changes can only occur at the population level.
b)
Gene pool of a population remains fixed over time.
c)
Natural selection affects individuals not populations.
d)
Individuals cannot evolve but populations can.
7.
The part of the brain that operates involuntary control is the:
a)
Hypothalamus
b)
Medulla
c)
Cerebrum
d)
Cerebellum
8.
Which of the following is the correct sequence for embryonic development?
a)
Cleavage, Blastula, Morula, neurula gastrula
b)
cleavage, morula, blastula, gastrula, neurula
c)
Blastula, neurula, morula, cleavage
d)
blastula, neurula, morula, cleavage, cytokinesis
9.
During the period in which life was expected to have begun, the primitive Earth's atmosphere would have had all BUT:
a)
Oxygen
b)
Hydrogen
c)
Ammonia
d)
Methane
10.
An organism that is more complex than a platyhelminthe but more primitive than an arthropod would be a:
a)
An annelid (earthworm)
b)
An echinoderm(star fish)
c)
A chordate
d)
Sponge
11.
Which does not occur in the small intestine?
a)
Pancreatic lipase breaks down fats
b)
Pepsin breaks down proteins to amino acids
c)
Pancreatic amylase breaks down carbohydrates into simple sugars
d)
Bile emulsifies fats into smaller fat particles.
12.
In animals: which pathway would be the most likely for a secretory protein?
a)
Plasma membrane, golgi, ,ribosome, secretory vesicle, rough ER
b)
Rough Er, ribosome, golgi, secretory vesicle
c)
Plasma membrane, golgi, ribosome, vesicle, rough ER
d)
Ribosome, rough ER, Golgi, secretory vesicle, plasma membrane
13.
All of the following statements are correct regarding
a)
Alleles are alternative forms of the same gen
b)
Alleles are found on corresponding loci of homologous chromosomes
c)
A gene can have more than two alleles
d)
An individual with two identical alleles is said to be heterozygous for the condition.
14.
In chick embryos, the extraembryonic membrane that provides nourishment to the fetus is the
a)
A) amnion
b)
B) chorion
c)
C) placenta
d)
D) egg yolk
15.
Which of the following adaptive features would be found in arid conditions?
a)
Vascular Tissues
b)
Stomates
c)
Multiple Leaves
d)
Thick Cuticles
16.
Which of the following best accounts for the ability of legumes to grow well in nitrogen-poor soils?
a)
These plants make their own proteins
b)
The plants have a mutualistic relationship with Nitrogen-fixing bacteria
c)
These plants are capable of directly converting nitrogen gas into nitrates
d)
These plants do not require nitoren to make plant proteins.
17.
Which vessels are responsible for carrying O2 poor blood in the heart
a)
Pulmonary Veins
b)
Pulmonary Arteries
c)
Aortas
d)
Brachiocephalic Artery
18.
The "main vein" returning O2 poor blood to the body is generally known as:
a)
Vena Cava
b)
Abdominal Aorta
c)
Thoracic Aorta
d)
Pulmonary Vein
19.
All of the following could prevent interspecific breeding except
a)
Geographic Isolation
b)
Behavioral Isolation
c)
Different Courtship Rituals
d)
Similar Breeding Seasons
20.
In angiosperms, when the ovule is fertilized, the zygote develops into an embryonic plant. Which part will become the seed.
a)
Ovule
b)
Ovary
c)
Pollen Grains
d)
Cotyledon
21.
Which of the following indicates the correct sequence of reflex arc from the spinal cord in frogs to their effector muscles.
a)
Stimuli, Dendrite, Axon, Effector Cells
b)
Spinal Cord, Dendrite, Axon, Afferent Pathway
c)
Spinal cord, afferent pathway, brain , spinal column
d)
Afferent Pathway, Integration, Sensory Neuron, Ganglia
22.
Pssst! Pass it on! You are a cutaneous (skin-based) neuron who needs to get a message to your friend the muscle. What is your best pathway?
a)
Stimulus, Sensory, Afferent, Spinal Cord
b)
Sensory, Afferent, Integration, Spinal Cord, Efferent (Motor Pathway) Effector Muscle
c)
Sensory, Integration, Afferent, Spinal Cord, Efferent (Motor Pathway) Effector Muscle
d)
Integration, Stimulus, Sensory, Afferent, Efferent muscle
23.
A herring population was reduced by predation. What is the most likely contributing factor for this to occur in an ecosystem?
a)
Mackerels are the smallest predators in the ecosystem
b)
The small crustacean population was greatly reduced
c)
The plankton population will be reduced over the next year.
The small crustaceans become extinct.
The small crustaceans become extinct.
d)
Small crustaceans were keystone predators
24.
A nerve impulse requires neurotransmitters of a presynaptic neuron. Which best explains the function of acetylcholine?
a)
They speed up sodium channels
b)
They open up potassium channels in the axonal membrane
c)
They excite or inhibit the postsynaptic neuron
d)
They open the calcium channels in the axonal membrane
25.
The mRNA synthesized in cytoplasm is said to be much smaller than the nucleus
a)
Excision of transposons
b)
Addition of a poly-A tail to mRNA molecule
c)
Excision of exons from the mRNA molecule
d)
Excision of introns from the mRNA molecule
26.
During a dive, a Weddell seal diverts oxygenated blood cells to the eyes and brain/spinal cord. Which is the most likely reason for this adaptation?
a)
To increase the number of RBC's in the nervous system
b)
To increase the amount of oxygen reaching the skeletomuscular system
c)
To increase the amount of oxygen reaching the Central Nervous System
d)
To increase the oxygen concentration in the lungs.
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