Biology Questions

In anatomical position the A upper limbs hang in a natural position at the side of the body O B feet are slightly apart and the toes point forward C human is sitting D head is turned to the side

A clavicle B vertebrae OC ribs The D cranium Question 22 1 point 4 Listen is the only facial bone with a sinus OA ethmoid OB mandible OC maxilla belongs to the appendicular skeleton D sphenoid

A forearm B thigh OC leg D arm Question 4 1 point Listen Before putting away the microscope in the storage cabinet you must observe al the following except OA remove the slide from the stage OB clean the lenses C wrap the cord around the microscope

OA white pigments in skin cells OB carotene from carrots and yellow vegetables OC melanin produced by skin cells OD red pigments in blood Question 18 1 point Listen The cells in this layer of epidermis are dead and their flat scale like remnants are filled with keratin OA stratum granulosum OB stratum spinosum OC stratum corneum

OA jugular foramen B foramen lacerum OC foramen ovale OD foramen magnum Question 24 1 point 4 Listen The exceptional flexibility of the shoulder girdle is due in part to the OA deep socket that holds the humerus OB ability of the scapula to slide easily against the thorax OC strong ligament that holds the head of the humerus to its socket the axial skeleton

How many bones are found in the lower leg OA 4 OB 1 OC 2 OD 25

OB associations C axials OD articulations Question 20 1 point 4 Listen Which of the following bone markings helps form joints OA epicondyle OB crest OC fossa

bone and can withstand great stress when pulled in one direction fibers attaches muscles to OA fibrocartilage B dense regular OC dense elastic OD dense irregular Question 14 1 point Listen Cardiac muscle is found in the OA heart OB blood vessels capillaries and heart OC blood vessels

A Cardiac B Smooth OC Connective OD Skeletal Question 16 1 point 4 Listen Pressure receptors called lamellar Pacinian corpuscles are located in this layer of the integument OA epidermal stratum basale OB dermal papillary layer onidermal stratum spinosum

OA fluid and solutes out of the capillaries and into the kidney tubules B blood around the circulatory system C lymph fluid through lymph vessels OD all of these Question 12 1 point Listen In healthy people it is good practice to use isotonic solutions for injections into veins of the circulatory system because OA hypotonic solutions cause red blood cells to crenate OB hypertonic solutions cause red blood cells to swell and lyse mo and function of red blood cells

B Lysosomes OC Golgi apparatus D Rough endoplasmic reticulum Question 8 1 point 4 Listen are tiny finger like projections on some cell surfaces that increase the surface area for absorption of materials OA Microtubules OB Flagella OC Microvilli D Cilin

OA prophase telophase OB meiosis mitosis on and C mitosis interphase D mitosis cytokinesis B Na ions Question 10 1 point 40 Listen Which substance uses a carrier protein to cross the plasma membrane by facilitated diffusion OA glucose OC Cl ions or division of the cytoplasm

The mammary region is to the sternal region A lateral B medial C superior D inferior

A hypothetical species of plant has flowers whose color is controlled by a single gene with two alleles red R and yellow Y where heterozygous individuals are orange A population of 3190 of these plants includes 612 plants with yellow flowers and 819 plants with orange flowers Assuming HWE what would be the expected number of individuals with the RY genotype 1389 1286 1474 1531

Can someone with type O blood have parents that are type A and B What if their parents were A and AB

How is the doppler measurement of blood flow related to the TPR Total Peripheral Resistanc in the circulatory system

How does the presence of arteriosclerosis in a person with cardiac issues interfere with the role of TPR and increasing blood flow

What are the possible genotypes for someone with type A blood grouping List blood type and Rh separately What are the possible genotypes for someone with type AB List blood type and Rh separately

What is an antibody What cells are responsible for the production antibodies What are the 5 classes types of antibodies

Fill in the table regarding blood typing Blood Type Type A Type A Type B Type B Type AB Type AB Type O Type O I Antigen on the RBC red blood cell Antibody that will create an immune complex with this blood type Rhesus factor antigen present yes or no

Question 1 1 point Listen What is the main difference between an autotroph producer and a het consumer Ohow they respond to stimuli how they obtain energy Ohow they reproduce their position in the hierarchy of complexity

Question 8 1 point 4 Listen Chlorophyll gains energy from the sun by what mechanism Water molecules within chlorophyll gain potential energy from photons ATP molecules within chlorophyll directly absorb photons Electrons within chlorophyll turn into protons when they are struck by photons ADP molecules absorb photons increasing their potential energy Electrons within chlorophyll molecules become excited and gain energy as photons are absorbed

Question 4 Listen Light reactions produce ATP NADPH and O2 ATP NADPH and CO2 glucose ATP and O2 Oglucose ATP and CO ATP NADPH and H O

Question 10 1 point 41 Listen What happens to CO2 when it moves into the stroma The CO2 splits into C and O It immediately passes on to the thylakoids It gets incorporated into the Calvin cycle and goes toward the formation of glucose The CO becomes a by product of cellular respiration It is converted to water

Question 6 1 point di Listen All of the following compounds are necessary components EXCEPT ATP ONADP water oxygen carbon dioxide 21

Question 7 1 poin The energy of movement of electrons down the electron photosystem I is used to generate OATP NADPH CO2 02

Question 5 1 point 4 Listen All of the following molecules are necessary components of photosynthetic process except ATP NADPH oxygen carbon dioxide

Question 4 1 point 4 Listen Specifically molecules of chlorophyll are located in the membranes of Ostoma Othylakoids stroma Ograna vesicles Previous Page Next Page Pag

Question 2 4 Listen Where in a Chloroplast is ATP Made Stroma Epidermis Outer membrane Thylakoids

Question 4 Listen Chlorophyll is associated with Othylakoids Ostroma cristae O endoplasmic reticulum Next Page

Examine the caminalcules carefully referring to the following diagram showing their morphological characters B C D Character Anterior Appendages Eyes Posterior Appendag State 1 Tentacles Firs Present Absent Sucker Anterior Ridge Present Dorsal Ridas Absent Present Posterior i Assent Present State 0 A Le Bum Greidar Triangular tel B Absent 2 C Use the above data matrix you just created to compile the number of synapomorphic traits between each pair of caminalcule species in this table by dragging and dropping the appropriate numbers 0 6 D State 2 D Lass Legs E Arend W 8 Dal Proge OG 0 0 0 O CM A L Eyee s p oppentage O a Ob to complete the data matrix below by dragging either 0 1 or 2 character states Watch the lecture 7 50 of the answer is in there CHARACTER STATE Eyes CHARACTER OG A Anterior Appendages 0000 000000 BCDE Fosterior Appendages 00 Auterio Ridge00 Dorsal Ridge 000000 Potetice R00 Lateral Bump 00000 7 Now you can use these data to cluster your caminalcule species nto a tree that represents their phylogeny based on parsimony Which of the following trees is the most parsimonious tree The parsimony principle is basic to all science and tells us to choose the simplest scientific explanation that fits the evidence In terms of tree building that means that all other things being equal the best hypothesis is the one that requires the fewest evolutionary changes I hope you answered a in the previous question Now let s ma one of the traits eyes onto th most parsimonious tree Drag a drop the traits so that you minimize the steps OG B C D A

low blood calcium and homeostatic imbalances

Low blood calcium Find an article from the library and or internet about low blood calcium that you find interesting and post a link It could be a news article from a source like the Washington Post an article posted by a science magazine journal like Science or National Geographic or a scientific research article You cannot post something like a Wikipedia or WebMD article however You ll probably have the best luck searching for things related to Homeostatic Imbalances Post the website link or video link for another student to read Include a brief statement about why you find the article interesting

Consider the reaction Use the References to access important values if needed for this question N O4 9 2NO 9 Write the equilibrium constant for this reaction in terms of the equilibrium constants K and K for the reactions below Ng g 2O g N O 9 K 1 2 N 9 O g NO 9 K For answers with both a subscript and a superscript enter the subscript first For example enter K 2 if the first equilibrium constant should be squared K

All of the following are true of smooth muscle EXCEPT The myofilaments are arranged diagonally instead of in sarcomeres The have diffuse junctions where neurotransmitters are released into a wide synaptic cleft Similar to skeletal muscle fibers neurotransmitter binding always results in action potentials that stimulate contraction Calcium binds to calmodulin instead of troponin during contraction

Which of the following is NOT a criteria used in naming muscles number of insertions muscle size number of origins direction of fibers or fascicles muscle location

Put the following steps in muscle fiber contraction into the correct chronological order An action potential is generated in the muscle fiber s sarcolemma A motor neuron fires an action potential and releases ACh into the synaptic clef Cross bridge cycling occurs ACh binds to receptors on the muscle fiber s sarcolemma resulting in an end plate potential Calcium binds to troponin which results in the myosin binding actin The action potential travels down the T tubules triggering the release of calcium ions

motor unit neuromuscular junction muscle twitch sarcolemma Question 4 1 point 4 Listen With contractions the muscle changes in length and moves a load With contractions the muscle generates tension but does not change length concentric eccentric isotonic isometric Oisometric isotonic

Match the type of arthritis with the correct cause normal wear and tear on a joint excessive uric acid autoimmune disease bacteria transmitted by a tick bite 1 osteoarthritis 2 rheumatoid arthritis 3 gouty arthritis 4 lyme disease

are discs of fibrocartilage that improves the fit of bone ends to stabilize the joint and reduce wear and tear menisci fatty pads tendon sheaths bursae

The hip is the most freely moving joint in the body but it s stability is sacrificed True False

Which of the following is correctly matched antiarthroses slightly movable joints synarthroses freely moveable joints diarthroses freely movable joints immovable joints

In a sprain the meniscus of the joint is stretched or torn requiring arthroscopic surgery to fix it True False

iring excitation contraction coupling the events that transmit action potential along the sarcolemma are coupled to the sliding of myofilaments True False Question 41 2 points 4 Listen Rigor mortis occurs because Osodium ions leak into the muscle causing continued contractions no ATP is available to release attached actin and myosin molecules proteins are beginning to break down thus preventing a flow of calcium ions

regenerated for muscle metabolism lowing that are true regarding the ways in which ATP is Glycolysis can occur in the presence or absence of oxygen but is considered anaerobic because it does not use oxygen During rest and light to moderate exercise the aerobic pathway produces the vast majority of the ATP produced Creatine phosphate a molecule that is unique to muscles donates a phosphate to ADP to instantly form ATP The anaerobic pathway is efficient but slow compared to the aerobic pathway Question 24 1 5 points Listen Match the following types of joints with their descriptions DE A joint where fibrocartilage unites the bones A completely ossified joint A joint where hyaline ter the bones 1 Symphyses 2 Synchondroses 3 Synostoses

the total number of muscle fibers cells available for contraction the length the number of neurons innervating it the shape Question 34 2 points 40 Listen A term such as extensor in a muscle s name refers to the muscle size O the muscle shape the action of the muscle

shape of the muscle size of the muscle action of the muscle location of the muscle Question 36 2 points Listen A term such as rectus in a muscle s name refers to the Olocation of the muscle O action of the muscle O direction of the muscle fibers number of origins

The muscle shortens and does work Listen The muscle generates force as it lengthens Question 12 2 points 1 Concentric contractions 2 Eccentric contractions Select ALL of the following statements that are correct There are two main types of myofibrils one is composed of actin and the other is composed of myosin The sarcoplasmic reticulum surrounds each muscle fiber and stores calcium extracellularly T tubules are extensions of the plasma membrane that protrude deep into the cell interior The carcolemma is the plasma membrane of a skeletal muscle fiber

stable base on which to act 0000 Fixator Agonist Antagonist Synergist cle immobilizes a bone or muscle s origin giving a prime mover a Question 26 2 points Listen What type of muscle opposes or reverses the movement of the prime mover Synergist Agonist

a second class lever a fourth class lever a third class lever a first class lever Question 32 1 5 points 4 Listen A Select whether each of the following is true for smooth muscle or skeletal muscle synchronized contractions due to gap junctions that spread action potentials to all fibers innervated by the autonomic nervous system each fiber is innervated by 1 smooth muscle 2 skeletal muscle