BIOLOGY PROCTORED EXAM PENN FOSTER 2024-2025 ACTUAL EXAM/PENN
FOSTER BIOLOGY PROCTORED EXAM LATEST 630+ QUESTIONS AND
CORRECT ANSWERS /ALREADY GRADED A+.
Characteristics of living things - ANSWER--All are composed of cells
-All obtain energy and use it to develop
-Can sense changes in the environment and adjust in response to
change
-Exhibit modifications that represent adaptations to their environment
Levels of Biological Organization - ANSWER-atom, molecule,
organelle, cell, tissue, organ, organ system, organism
How are organisms classified? - ANSWER-on the basis of their
evolutionary/genetic relatedness
What are the Adaptations in Australopithecus Afarensi – ANSWER-
Repositioned forearm magnum, Basin, Valgus angle at the knee, Non-
Opposable big toe
what is the repositioned forearm magnum - ANSWER-the spinal cord
enters the skill from the base rather then the back
,what is a Basin - ANSWER-Shaped pelvis: the pelvis supports and
balances the torso, serving as the body's center of gravity
what is Valgus angle at the knee - ANSWER-the femurs point toward
the knees to shift the center of gravity more easily
what is Non-Opposable big toe - ANSWER-the toes of the foot are in
line to efficiently direct downward force toward the ground.
what is alternation of generation in plants - ANSWER-Plants have a life
cycle with two distinct stages, the GAMETOPHYTE stage and the
SPOROPHYTE stage. Cycling between theses two is known as
alternation of generations. In the HAPLOID GAMETOPHYTE stage,
gametes which are reproductive cells, are produced through mitosis.
The male and female gametes fuse to form a diploid zygote, which
then develops into the sporophyte. The mature sporophyte produces
spores through meiosis and the spores undergo mitosis to produce
the haploid gametophyte.
What is radial symmetry - ANSWER-can be split into two identical
halves by drawing a plan through their longitudinal axis in more than
one direction with their mouth forming one end of this axis. ( jellyfish,
anemones, corals, comb jellies, adult sea urchins and starfish)
animals have a top and bottom but not clear left or right or front or
back
,What is Bilateral symmetry - ANSWER-: can be divided into two
mirrored halves by a sagittal plane through their midline, splitting the
animal into the left and right sides. Bilaterally symmetric animals are
usually polarized, having a head and Tail region, and are well adapted
for directional movement
What shape are bacillus bacteria - ANSWER-Rod Shaped
What shape are coccus bacteria - ANSWER-Ball Shaped
What shape are spirillum bacteria - ANSWER-Long spiral shaped
What does blood consist of - ANSWER-cells, cell fragments, and fluid
called plasma, which is yellow colored and makes up about 55 percent
of human blood
what does blood plasma consist of - ANSWER-Blood plasma contains
water and electrolytes, proteins, glucose, and lipids.
What are the most abundant cells in blood - ANSWER-Red blood cells
are the most abundent cells in the blood they are also known as
erythrocytes
what is white blood cells - ANSWER-also known as leukocytes. White
blood cells have nuclei and don't contain hemoglobin and can live for
years.
, what are cell fragments - ANSWER-platelets, also called thrombocytes
What do platelets do - ANSWER-platelets help the blood clot to stop
bleeding wounds. Platelets are attracted to a wound activate each
other and stick to the wall of the blood vessel to form a platelet plug
What is the Baltimore Classification? - ANSWER-Virus classification
based on nucleic acid genomes and replication type
what is are biodiversity threats - ANSWER-Habitat loss , Invasive
Species, over harvesting, and climate change
What is habitat loss - ANSWER-: habitats can be degraded or
destroyed as humans clear landscapes or change land - use patterns
for developments Highways can divide and fragment habitat, known
as habitat fragmentation. Habitat fragmentation can limit the natural
range of organisms and create artificial interactions with humans and
other orginisms ( deer having to cross highways )
What are invasive species? - ANSWER-are species that are not native
to a region are said to be nonnative or invasive. Not all nonnative
species are invasive. Invasive species can lead to significant
economic and environmental harm, and many invasive species have
been introduced to an area by human activity.
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