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Bio 101 Lou Pech Semester 2
Bio 101 Summary Notes for Lou Pech Semester 2 UWMC
141
Biology
Undergraduate 1
11/03/2013

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Cards

Term
A Heterozygous individual has a ____ for a trait being studied.
Definition
pair of nonindentical genes (9)
Term
An Organisms observable traits constitute it's ____.
Definition
Phenotype (9)
Term
The offspring of the cross AA x aa are ____
Definition
All Aa (9)
Term
Assuming all alleles have a clear dominant/recessive relationship, a dihybrid cross leads to a phenotypic ratio in offspring that is typically close to ____.
Definition
9/3/1/1 (9)
Term
The probability of a crossover occurring between two genes on the same chromosome _____.
Definition
increases with the distance between them (9)
Term
_____ alleles are both fully and equally expressed.
Definition
Codominant (9)
Term
A bell curve indicates ______ in a trait.
Definition
continuous variation (9)
Term
Constructing a pedigree is particularly useful when studying inheritance patterns in organisms that _____
Definition
have few offspring per generation (9)
Term
A female child inherits one X chromosome from her mother and one from her father. What sex chromosome does a male child inherit from each of his parents?
Definition
X from mother, Y from father. (9)
Term
Nondisjunction at meiosis can result in _____.
Definition
aneuploidy (9)
Term
T or F? All traits are inherited in a predictable way
Definition
False (9)
Term
If one parent is heterozygous for a dominant autosomal allele and the other parent does not carry the allele, a child of theirs has a ____ chance of being heterozygous.
Definition
50 % (9)
Term
Klinefelter syndrome (XXY) is most easily diagnosed by _____.
Definition
Karyotyping.
Term
The number of species on an island usually depends on the size of the island and it's distance from a mainland. This statement would most likely be made by _____.
Definition
a Biogeographer (11)
Term
The bones of a bird's wing are similar to the bones in a bat's wing. This observation is an example of _____.
Definition
Comparative Morphology (11)
Term
Evolution ______.
Definition
Is heritable change in the line of decent, can occur by natural selection. (11)
Term
A trait is adaptive if it _____.
Definition
Increases fitness (11)
Term
What type of rock are you more likely to find a fossil in?
Definition
Limestone, composed of sedimented calcium carbonate (11)
Term
List examples of fossils.
Definition
An insect encased in 10-million-year-old tree sap, a woolly mammoth frozed in the artic permafrost for the last 50,000 years, mineral-hardened remains of a whalelike animal found in an egyptian desert, an impression of a plant leaf in a rock. (11)
Term
If the half-life of a radioisotope is 20,000 years, then a sample in which three-quarters of that radioisotope has decayed is ____ years old.
Definition
40,000 (11)
Term
Did Pangea or Gondawa form first?
Definition
Gondawa (11)
Term
The Cretaceous ended ____ million years ago.
Definition
65.5 (11)
Term
Through ____, a body part of an ancestor is modified differently in different lines of descent.
Definition
Morphological divergence (11)
Term
Homologous structures among major groups of organisms may different in _____.
Definition
Size, shape, and function. (11)
Term
By altering the steps in the program by which embryos develop, a mutation in a ____ may lead to major differences in body form between related lineages.
Definition
Homeotic gene (11)
Term
What can be used as evidence in shared ancestry?
Definition
Amino acid sequences, DNA sequences, fossil morphologies, and embryonic development. (11)
Term
_____ is the original source of new alleles.
Definition
Mutation (12)
Term
Individuals don't evolve, _____ do.
Definition
Populations (12)
Term
What is the form of natural selection when the extreme forms of a trait are eliminated?
Definition
Stabilizing (12)
Term
What is the form of natural selection where the midrange forms of a trait are eliminated?
Definition
Disruptive (12)
Term
What is the form of natural selection where the alleles are shifted in one direction?
Definition
Directional (12)
Term
Sexual selection, such as competition between males for access to fertile females, frequently influences aspects of body form and can lead to ______.
Definition
Male/female differences, male aggression and exaggerated traits (12)
Term
The persistence of the sickle allele at high frequency in a population is a case of ______.
Definition
Balanced Polymorphism and inbreeding. (12)
Term
______ tends to keep different populations of a species similar to one another.
Definition
Gene Flow (12)
Term
The theory of natural selection does not explain ______.
Definition
Genetic drift, the founder effect, gene flow, how mutations arise and inheritance. (12)
Term
A fire devastates all trees in a wide swath of forest. Populations of a species of tree-dwelling frog on either side of the burned area diverge to become separate species. This is an example of _____.
Definition
Allopatric speciation (12)
Term
Sex in many birds is typically preceded by an elaborate courtship dance. If a male's movements are unrecognized by the female, she will not mate with him. This is an example of _____.
Definition
Behavioral isolation and sexual selection. (12)
Term
What is cladistics?
Definition
It is the primary way of reconstruction evolutionary history, may involve parsimony analysis and is based on derived traits. (12)
Term
In cladistics, the only taxon that is always correct as a clade is the ____.
Definition
species (12)
Term
In evolutionary trees, each node represents a _______.
Definition
point of divergence. (12)
Term
In cladograms, sister groups are ______.
Definition
The same age (12)
Term
_____ tissues are sheetlike with one free surface.
Definition
Epithelial (19)
Term
_____ connects epithelium to underlying connective tissue.
Definition
Basement Membranes (19)
Term
Most animals have glands derived from ___ tissue.
Definition
Epithelial (19)
Term
The most abundant protein in the human body is _____, made by fibroblasts.
Definition
Collagen (19)
Term
____ consists mainly of plasma.
Definition
Blood (19)
Term
Your body converts excess carbohydrates and protiens to fats that accumulate in ______.
Definition
Adipose Tissue Cells (19)
Term
______ tissues are the body's most abundant and widely distributed tissue.
Definition
Muscle (19)
Term
Cells of ____ can shorten (contract).
Definition
Muscle (19)
Term
_____ muscle tissue has a striped appearance and is under voluntary control.
Definition
Skeletal Muscle (19)
Term
____ detects and integrates information about changes and controls responses to those changes.
Definition
Nervous Tissue (19)
Term
Thin cytoplasmic projections from cells called ______ carry signals between your spinal cord and your toes.
Definition
Neurons (19)
Term
The functions of skin include _____.
Definition
A defense against pathogens, production of vitamin D, and helps cool the body. (19)
Term
When the level of sugar in your body falls too low, your body senses this decline and converts glycogen to sugar, putting more sugar into your blood. This is an example of ______.
Definition
Negative Feedback and Homeostasis. (19)
Term
A hydrostatic skeleton consists of _______.
Definition
A fluid in an enclosed space. (20)
Term
Bones are _____.
Definition
Mineral reservoirs, skeletal muscle's partners, and sites where blood cells form. (20)
Term
The human backbone _____.
Definition
Consists of vertebrae and intervertebral cartilage disks, is S shaped, and encloses the spinal cord. (20)
Term
Bones move when ____ muscles contract.
Definition
Skeletal Muscles (20)
Term
A ligament connects _____.
Definition
Bones at a joint. (20)
Term
The knee is a _______ type joint.
Definition
Hinge-type synovial joint. (20)
Term
A vertebrae skeletal muscle ______.
Definition
Contracts in response to signals from a motor neuron. (20)
Term
Release of _____ from a muscle fiber's modified endoplasmic reticulum allows actin and myosin filaments to interact.
Definition
Calcium Ions (20)
Term
Binding of ATP to _____ activates it and prepares this protein to take part in muscle contraction.
Definition
Myosin (20)
Term
ATP for muscle contraction can be formed by ____.
Definition
Aerobic respiration, lactate fermentation and creatine phosphate breakdown. (20)
Term
A red muscle fiber _____.
Definition
Contains myoglobin. (20)
Term
Red Marrow ______.
Definition
Produces blood cells. (20)
Term
All vertebrates have a ____ circulatory system.
Definition
Closed (22)
Term
Signals initiated by the ____ cause the heart to contract.
Definition
SA Node (22)
Term
Blood pressure is highest in the ____ and lowest in the ______.
Definition
Arteries, veins. (22)
Term
Contraction of _____ is the main force driving the flow of blood away from the heart.
Definition
Ventricles (22)
Term
At rest, the largest volume of blood is in the ______.
Definition
Veins (22)
Term
In the blood, most oxygen is transported _____.
Definition
In red blood cells, bound to hemoglobin. (22)
Term
The ______ circuit carries blood from the heart to the lungs then back to the heart.
Definition
Circulatory (22)
Term
The heart chamber with the thickest wall pumps blood into the _____.
Definition
Aorta (22)
Term
In human lungs, gas exchange occurs at the _______.
Definition
Alveoli (22)
Term
When you breathe quietly, inhalation is ____ and exhalation is _____.
Definition
Active, Passive. (22)
Term
What happens during inhalation?
Definition
The thoracic cavity expands, the clottis closes and the diaphragm relaxes. (22)
Term
The diaphragm is a ____ muscle.
Definition
Smooth (22)
Term
List the order of structures in which inhaled air flows through.
Definition
Pharynx, Larynx, Trachea, Bronchus, Bronchiole (22)
Term
The digestive system functions in _____.
Definition
Secreting enzymes, absorbing nutrients and eliminating wastes. (23)
Term
Protein digestions begins in the _____.
Definition
Stomach (23)
Term
Digestion is completed and most nutrients are absorbed in the ______.
Definition
Small Intestine (23)
Term
Bile has roles in ______ digestion and absorption.
Definition
Fat (23)
Term
Bacteria that produce vitamin b12 live in the ____.
Definition
Large Intestine (23)
Term
What does the gall bladder do?
Definition
Stores, secretes bile. (23)
Term
What does the large intestine do?
Definition
Compacts undigested residues. (23)
Term
What does the liver do?
Definition
Makes bile, stores glycogen. (23)
Term
What does the small intestine do?
Definition
Absorbs most nutrients. (23)
Term
What does the stomach do?
Definition
Secretes gastric fluid. (23)
Term
What does the pancreas do?
Definition
Secretes enzymes, buffer. (23)
Term
Essential fatty acids are _______.
Definition
Not made by the body. (23)
Term
What do Microvili do?
Definition
Project from the surface of cells in the small intestine (23)
Term
Iron is an example of a ____.
Definition
Mineral (23)
Term
Urea forms as a breakdown product of _____.
Definition
Proteins (23)
Term
Filtration moves _______ and other substances into kidney tubules.
Definition
Water (23)
Term
Water loss triggers an _____ in ADH secretion.
Definition
Increase (23)
Term
Kidneys return water and small solutes to the blood by the process of ______.
Definition
Reabsorption. (23)
Term
Kidneys adjust the blood acidity by increasing or decreasing the ______ of H+.
Definition
Secretion. (23)
Term
The _____ of a neuron releases neurotransmitters.
Definition
Axon Terminals (24)
Term
______ occurs mainly in the brain and spinal cord.
Definition
Interneurons. (24)
Term
A ____ has one axon and no dendrites.
Definition
Sensory Neuron (24)
Term
When you sit quietly, output from the ____ system prevails.
Definition
Parasympathetic. (24)
Term
An action potential occurs when ______.
Definition
A neuron reaches threshold potential. (24)
Term
Skeletal muscles are controlled by the ____ system.
Definition
Somatic (24)
Term
A ____ is an automatic response that does not require thought.
Definition
Reflex (24)
Term
The two halves of the cerebrum ______.
Definition
Are connected by the corpus callosum. (24)
Term
The bloob-brain barrier controls what enters the _________.
Definition
cerebrospinal fluid. (24)
Term
Which is a somatic sensation?
Definition
Touch. (24)
Term
_____ is a reduced response to an outgoing stimulus.
Definition
Sensory adaptation (24)
Term
Chemoreactions play a role in the sense of ____.
Definition
Smell (24)
Term
In a vertebrate eye, photoreceptors are in the _______.
Definition
Retina (24)
Term
Colorblindness arises when _____ are missing or defective.
Definition
Cone cells (24)
Term
_____, signaling molecules released by endocrine cells and glands, enter the blood and are distributed through the body.
Definition
Hormones. (25)
Term
Antidiuretic hormone and oxytocin are hormones produced in the hypothalamus but released from the _____.
Definition
Pituitary Gland (25)
Term
Protein hormones typically bind to receptors ______.
Definition
At the plasma membrane. (25)
Term
What is targetted by antidiuretic hormone?
Definition
Kidneys. (25)
Term
What is targetted by oxytocin?
Definition
Mammary glands, uterus. (25)
Term
What is targetted by luteinizing hormone?
Definition
Gonads (25)
Term
What is targetted by Growth Hormones?
Definition
Most body cells (25)
Term
Overproduction of _____ causes acromegaly and gigantism.
Definition
Growth Hormone (25)
Term
The _____ regulates calcium levels in the blood.
Definition
Parathyroid glands (25)
Term
_____ lowers blood sugar levels; ____ raises it.
Definition
Insulin;Glucagon (25)
Term
A rise in the concentration of thyroid hormone in the blood slows the release of the thyroid hormone. This is an example of _____.
Definition
Negative Feedback. (25)
Term
The _____ produces digestive enzymes and hormones.
Definition
The Pancreas. (25)
Term
Thyroid hormone _____.
Definition
Influences development of the nervous system. (25)
Term
T or F? Only women make follicle stimulation hormone and luteinizing hormone?
Definition
False (25)
Term
A person with an overly active thyroid gland is more likely to be unusually ______.
Definition
Anxious. (25)
Term
During stressful situations, the adrenal glands increase their output of _____.
Definition
Cortisol, epinephrine and norepinephrine. (25)
Term
The male sex hormone is secreted in response to secretion of hormones by the _____.
Definition
Pituitary gland (25)
Term
A ____ produces both eggs and sperm.
Definition
Hermaphrodite (26)
Term
The end product of a cleavage is a _____.
Definition
Blastula (26)
Term
A ____ is a hollow ball of cells that undergoes gastrulation.
Definition
Blastula (26)
Term
Meiotic divisions of germs cells in the ____ gives rise to sperm.
Definition
Seminiferous tubules (26)
Term
A male has an erection when ______.
Definition
Spongy tissue inside the penis fills with blood (26)
Term
In humans, fertilization usually occurs in ________.
Definition
An oviduct (26)
Term
During a menstrual cycle, a midcycle surge of ______ secreted by the pituitary triggers ovulation.
Definition
LH (26)
Term
A _____ implants in the lining of the human uterus.
Definition
Blastocyst (26)
Term
List the order of human development.
Definition
Zygote forms, blastocyst forms, gastrulation, neural tube forms, heart beat starts, tail disappears. (26)
Term
What STD's are caused by bacteria?
Definition
Chlamydia and Gonorrhea (26)
Term
Human milk contains ______.
Definition
Antibodies, lactose, and easily digested fats and proteins. (26)
Term
During labor, secretion of oxytocin stimulates _____.
Definition
Uterine contractions (26)
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