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73 Cards in this Set
- Front
- Back
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What level of protein structure is characterized by Alpha Helicew and beta sheets in which hydrogen bonding holds the shape in place? |
Secondary structure |
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Atomic mass of an atom is determined by the number of what |
Proteins and neutron |
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Species has 29% of its DNA composed of the nucleotide containing guanine. What percent does nitrogenous base thymine represent |
21% |
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Bands that responsible for holding two water molecules together |
Hydrogen |
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Ability to maintain a stable internal environment despite external conditions |
Homestasis |
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Defining features of humans allow us to walk on two legs and manipulate our environment |
Bipedaslism |
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Not a basic characteristic of all living things |
Individual organisms undergo evolution |
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What are the times for evolution is supported by homologus structures such as vertebrate forelimbs |
Anatomical evidence |
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In order to be considered alive organism must be at which level of organization |
Cell |
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Order of increasing complexity / organization |
Cell, tissue, organs, organ system, organisms. |
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What is evolution |
Changes in allele frequencies over time |
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What is hypothesis |
An idea or explanation that you then test through study or experiment |
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Biology definition |
The study of life |
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What step in the breakdown of glucose doesn't require oxygen |
Glycolysis |
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In order to maintain efficient a cell must maintain a ? surface area to ? volume ratio |
High, low |
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In the fluid mosaic model of the plasma membrane the phospholipid molecules are oriented so the ? heads are facing outside environment and the ? tails are facing the interior of the membrane |
Hydrophilic, hydrophobic |
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The sum of the chemical reaction that occurs in a Cell collectively are called |
Metabolism |
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What is the name of the semifluid medium inside the cell |
Cytosol |
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During the hurricane sat water invades freshwater marshes causing many plans to die. The plants are killed because the salt water solution is ? To the plants drawing water from their cells |
Hypertonic |
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If a cell lacked ribosomes it would be able to |
Synthesize proteins |
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What type of Junction must there be between cells to form a barrier |
Tight junctions |
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What isn't true of active transport |
Is driven by concentration Gradiet |
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What type of connective tissue is found in the urinary bladder and allows it to stretch |
Elastic connective tissue |
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Which of the following body parts is lined with mucous membrane |
Tubes of the digestive system |
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Specialized cells that work together to perform a common function are called |
Tissues |
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What protein provides flexibility and strength to connective tissues |
Collagen |
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Which type of epithelial tissue lines the air sacs of the lungs and permits exchange of gases |
Simple squamous epithelium |
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Which structure produces Goose bumps |
Arrector piling muscles |
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The outer layer of the skin is called the epidermis the epidermis is strong resistance operation and is waterproof what type of epithelial tissue likely makes up the epidermis |
Stratified columnar epithelium |
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The knee is ? to the ankle |
Proximal |
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What is not a function of integument |
Synthesis of vitamin D |
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What type of tissue contains neurons dendrites and axons |
Connective tissue |
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When blood calcium levels drop ? is released which activates ? cells to break down bone matrix |
Parathyroid hormone, osteoclasts |
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the tibia is part of what |
Leg |
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Which of the following joints is a fibrous joint |
Sutures between cranial bones |
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What is a canaliculus |
A small channel in The Matrix of Bones |
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Where is fat stored |
Yellow bone marrow |
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Bone repair order |
Hematoma, fibrocartilaginous callus, bony callus and remodeling |
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What is in part of the axial skeleton |
Clavicle |
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When you nod your head yes what type of movement are you using |
Flexion and extension |
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What takes faster to heal torn cartilage or a broken finger |
Broken finger |
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What is not a phase of single muscle twitch |
Stimulation period |
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What happens when actin and myosin filaments when a muscle contracts |
Both stay the same length |
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What does it occur when a muscle fatigues |
Tetanus is achieved |
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Muscle fiber is made up of many what |
Myofibrils |
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What is not a function of skeletal muscles |
Pumping blood throughout the body |
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What does troponin bind to and what happens when it binds |
Ca2+, tropomyosin shifts |
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Biggest muscle in the body |
Gluteus maximus |
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What supplies the energy for muscle contraction |
ATP |
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When the nerve signal reaches the axon terminal what happens next |
The synaptic vesicles release neurotransmitters |
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Of the three types of muscle tissue which has multiucleate fibers |
Skeletal muscle |
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Parts of the neuron that are correctly matched |
Axon conduct nerve impulses away from the cell body |
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Depolarization of neuron occurs when |
Sodium channels open and sodium influxes into the cell |
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What ensures the one-way direction of action potential |
Absolute refractory period |
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What isn't true function of the nervous system |
Cushion and protects soft tissue |
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Lobes of the cerebral hemisphere is properly paired with its function |
Temporal : primary auditory cortex |
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In what way are somatic motor pathway and the Parasympathetic automatic motor pathways |
Both use acetylcholine as a neurotransmitters |
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What does not concern spinal nerves |
Spinal nerves are part of CNS |
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What pairs of hormones is responsible for blood calcium homeostasis |
Calcitonin and parathyroid hormone |
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How the nervous system and the endocrine system alike |
Both regulate activities of other system |
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What hormone is controlled by positive feedback |
Oxytocin |
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What hormone is Mis paired with its Target organ |
LH kidney |
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What is the starting material for all steroid hormones |
Cholesterol |
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Some of the hormones produced by anterior pituitary have an effect on other endocrine glands what does not |
Growth hormone |
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What disorder is characterized by the overproduction of growth hormone in an adult |
Acromegaly |
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What hormone is released from the pancreas in response to a drop in glucose levels |
Glucagon |
