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WorksheetsWAYGROUND: Ch. 3 Psych REVIEW
Total questions: 60
Worksheet time: 32mins
Which of the following best describes the role of chromosomes in genetic variation?
Chromosomes are responsible for the production of proteins.
Chromosomes carry genetic information in the form of DNA.
Chromosomes determine the lifespan of an organism.
Chromosomes are involved in the digestion of nutrients.
How many pairs of chromosomes are present in a human egg or sperm cell?
23
46
92
12
What is the primary function of DNA within a chromosome?
To provide energy for cellular processes.
To store and transmit genetic information.
To protect the cell from external damage.
To regulate the cell's temperature.
Which of the following statements about alleles is true?
Alleles are identical versions of a gene.
Alleles are different versions of a gene.
Alleles are unrelated to genetic traits.
Alleles are only found in plant cells.
What is the significance of genetic variation in a species?
It leads to the extinction of the species.
It contributes to a species' adaptation to its environment.
It decreases the survival rate of the species.
It has no impact on the species' survival.
During which part of the reproductive process does fertilization occur?
When the egg is released from the ovary.
As the egg travels through the fallopian tubes.
After the egg reaches the uterus.
Before the egg is released from the follicle.
What is the relationship between genes and traits?
Genes are unrelated to traits.
Genes control or partially control traits.
Traits determine the structure of genes.
Traits are the building blocks of genes.
Which of the following best describes the structure of DNA?
A single-stranded molecule.
A helix-shaped molecule made up of nucleotide base pairs.
A circular molecule found only in bacteria.
A protein-based structure.
What is the role of nucleotide base pairs in DNA?
They provide structural support to the cell.
They form the genetic code that determines traits.
They are involved in the digestion of food.
They regulate the cell's energy production.
How does the release of an egg from the ovary occur?
It is a continuous process throughout the month.
It occurs roughly once per month from active ovaries.
It happens only during the winter season.
It is triggered by the presence of sperm.
What is the primary difference between a gene and an allele?
A gene is a specific version of an allele.
An allele is a specific version of a gene.
Genes and alleles are identical.
Alleles are larger than genes.
Which of the following processes contributes to genetic variation in humans?
Cloning
Fertilization
Photosynthesis
Respiration
What is the role of the fallopian tubes in human reproduction?
They store sperm until fertilization.
They transport the egg from the ovary to the uterus.
They produce hormones for the menstrual cycle.
They are the site of embryo implantation.
Which of the following best explains why a single gene can have multiple alleles?
Because genes are unstable and change frequently.
Because different alleles represent variations in the genetic code.
Because alleles are formed by combining multiple genes.
Because alleles are influenced by environmental factors.
What is the significance of the number 23 in human reproduction?
It represents the number of genes in a chromosome.
It is the number of chromosomes in a human egg or sperm cell.
It is the number of alleles in a gene.
It is the number of traits controlled by a single gene.
What is the primary function of dendrites in a neuron?
To transmit signals away from the neuron
To receive signals from other neurons
To store neurotransmitters
To protect the neuron
Which part of the neuron contains the nucleus?
Axon
Dendrite
Soma
Terminal button
Explain the role of the semipermeable membrane in a neuron.
It allows all molecules to pass through freely.
It stops all molecules from passing through.
It allows smaller molecules and molecules without an electrical charge to pass through.
It only allows charged molecules to pass through.
What is the function of synaptic vesicles in the terminal buttons?
To generate electrical signals
To house neurotransmitters
To protect the axon
To receive signals from other neurons
Describe the process by which signals are transmitted across a neuron.
Signals are received by the axon and transmitted to the dendrites.
Signals are received by the dendrites, transmitted electrically across the soma, and down the axon.
Signals are generated in the terminal buttons and sent to the soma.
Signals are stored in the synaptic vesicles and released when needed.
What is the primary role of neurotransmitters in the nervous system?
To transmit electrical signals
To act as chemical messengers
To protect the neuron
To store genetic information
Identify the part of the neuron that is responsible for transmitting signals away from the soma.
Dendrite
Axon
Synaptic vesicle
Nucleus
How does the structure of a neuron facilitate its function as an information processor?
The axon stores information for long-term use.
The dendrites receive signals, and the axon transmits them to other neurons.
The soma generates new neurons for processing.
The terminal buttons protect the neuron from damage.
What is the significance of the axon's length in signal transmission?
Longer axons transmit signals faster.
Shorter axons are more efficient in signal transmission.
Axon length does not affect signal transmission.
Axons can vary in length, affecting the speed and distance of signal transmission.
Which of the following best describes the soma of a neuron?
It is the site where neurotransmitters are released.
It is the cell body containing the nucleus.
It is the long extension that transmits signals.
It is the protective covering of the neuron.
What is the role of the terminal buttons in a neuron?
To generate electrical signals
To release neurotransmitters into the synapse
To protect the axon
To receive signals from other neurons
Explain how the semipermeable membrane contributes to the neuron's function.
It allows all molecules to pass through, ensuring constant communication.
It selectively allows certain molecules to pass, maintaining the neuron's internal environment.
It prevents any molecules from entering or leaving the neuron.
It only allows charged molecules to pass through, facilitating signal transmission.
Which part of the neuron is primarily involved in receiving signals from other neurons?
Axon
Dendrite
Soma
Terminal button
Discuss the importance of neurotransmitters in the communication between neurons.
They generate electrical signals within the neuron.
They act as chemical messengers, facilitating communication between neurons.
They protect the neuron from external damage.
They store genetic information for neuron replication.
What is the function of the axon in a neuron?
To receive signals from other neurons
To transmit signals away from the soma
To store neurotransmitters
To protect the neuron
The __ nervous system carries impulses from the central nervous system to the heart and other organs.
cerebral
somatic
muscular
autonomic
consists of the brain and spinal cord and coordinates all of the body’s activities
Central nervous system
Cerebrum
Peripheral nervous system
Medulla oblongata
largest part of the brain; is divided into two hemispheres and carries out higher thought processes involved with language, learning, memory, and voluntary body movements
Central nervous system
Cerebrum
Peripheral nervous system
Medulla oblongata
consists of sensory and motor neurons that transmit information to and from the central nervous system
Central nervous system
Cerebrum
Peripheral nervous system
Medulla oblongata
part of the peripheral nervous system that transmits impulses to and from skin and skeletal muscles
Somatic nervous system
Hypothalamus
Autonomic nervous system
Sympathetic nervous system
branch of the autonomic nervous system that controls organs and is most active during emergencies or stress
Somatic nervous system
Hypothalamus
Autonomic nervous system
Sympathetic nervous system
part of the peripheral nervous system that transmits impulses to and from skin and skeletal muscles
Somatic nervous system
part of the brain that regulates body temperature, appetite, thirst, and water balance
Hypothalamus
part of the peripheral nervous system that transmits impulses from the central nervous system to internal organs
Autonomic nervous system
branch of the autonomic nervous system that controls organs and is most active during emergencies or stress
Sympathetic nervous system
branch of the autonomic nervous system that controls organs and is most active when the body is at rest
Parasympathetic nervous system
Sympathetic nervous system
Parasympathetic nervous system
Autonomic nervous system
Peripheral nervous system
The PNS (peripheral nervous system)
contains the brain and spinal cord
contains all the nerves of the body
is divided into the somatic and autonomic systems
is divided into the sympathetic and parasympathetic divisions
The (a) part of the autonomic nervous system is active during resting and digesting
What are the two main components of the central nervous system?
brain and spinal cord
stomach and intestines
liver and kidneys
heart and lungs
Which part of the central nervous system is responsible for processing information and controlling body functions?
spinal cord
heart
lungs
brain
What is the function of the spinal cord?
producing hormones
to transmit nerve signals between the brain and the body
digestion and absorption of nutrients
regulates body temperature and blood pressure
Which part of the brain is responsible for controlling voluntary movements and coordination?
thalamus
medulla oblongata
cerebellum
cerebrum
What is the role of the brainstem?
The brainstem regulates emotions and mood.
The brainstem controls basic functions necessary for survival.
The brainstem is responsible for complex cognitive functions.
The brainstem plays a role in motor coordination and movement.
True or False: The spinal cord is responsible for transmitting sensory information from the body to the brain.
False
True
Which part of the brain is responsible for processing sensory information?
cerebral cortex
thalamus
medulla oblongata
cerebellum
They are not located in the same lobe
Endocrine glands secrete _
Hormones
Neurotransmitters
A wide range of chemical substances
These chemical messengers are synthesized and secreted by various glands
(a)
Glands are .
(a)
A hormone is _____________________.
a chemical substance produced by a gland and carried by the lymph.
an enzyme produced by a gland and carried by the blood.
a chemical substance produced by an organ and carried by the blood.
a chemical substance produced by a gland and carried by the blood.
What structure(s) shown in the picture above the kidneys?
Thyroids
Adrenal glands
Testes
Parathyroids
What structure is this?
Pancreas
Thyroid
Parathyroid
Adrenal glands
This structure releases what hormones?
insulin and glucagon
calcitonin and estrogen
Parathyroid hormone and antidiuretic hormone
epinephrine and testosterone
Which are glands?
Thyroid
Thymus
Throat
Adrenal
