Complete BIO 446 Q&A Exam Bundle

Cholesterol in the plasma membrane can gather together to form a _______ lipid raft What's the purpose of the folding of the inner membrane crustal? to increase surface area This organelle has a role for assembling polypeptides A. Golgi apparatus B. Ribosomes C. Nucleus b. Ribosomes In erad, wh...

All the following statements about the plasmalemma of a cell are true EXCEPT one. The EXCEPTION is: a. Has cholesterol in the middle layer b. May have lipid rafts c. Has integral proteins that form a loose association with one of the two membrane surfaces. d. The external surface of the plasma memb...

Simulates growth in epiphyseal plates of long bones via IGFs produced in the liver; produced by a _____ Somatotropin (GH); somatotroph Promotes milk secretion; produced by a _____ Prolactin (PRL); mammotroph Stimulates ovarian follicle development, estrogen secretion, & spermatogenesis in men; pro...

Anterior Movers of the Pectoral Girdle serratus anterior, pectoralis minor, subclavius Function of serratus anterior protraction of shoulder Posterior Movers of the Pectoral Girdle trapezius, levator scapulae, rhomboids Function of trapezius elevation, depression, retraction of scapula Function ...

What are the positives to sexual reproduction? 1. increased heterozygosity 2. purging of deliterious mutations 3. recombination and cross over 4. behavior What is asexual reproduction? offspring arise from a single organism, and inherit the genes of that parent obly; it does not involve the fusion ...

Functions of skin -barrier -maintain bodily fluids -sensory -synthesizes vitamin D -modulates body temperature -sexual signaling Skin barrier against -microorganisms -harmful substances -light Layers of the skin -epidermis -dermis Epidermis -thin -devoid of blood vessels -four layers-play differe...

A cell that is actively synthesizing proteins or is located with a rapidly growing tumor is characterized by a large a)Actin microfiber b) Nuclear pore c) Nucleolus d) Smooth ER c) Nucleolus Concentrations of integral and peripheral proteins that function in large enzyme complexes are located in th...

Lymph vessels -interstitial fluid gives rise to lymph vessels vessels that receive lymph from the lymph capillaries and circulate it to the lymph nodes. There are 2 major lymphatic vessels that drain into the vascular system; -right lymphatic duct: only drains into the right side of head and right u...

The characteristics of muscle tissue excitability, contractility, extensibility, elasticity - specialized to contract - typically aggregated into bundles - elongated and arranged in parallel arrays - specialized cytoplasm = sarcoplasm - cell membrane = sarcolemma - modified ER = sarcoplasmic reticu...

What is a distended external jugular vein? it means an enlarged vein, where the blood doesn't flow readily. What happens if the blood cant flow readily? There's a blockage, so the blood will pump backwards what are the structures involved in the cardiovascular system? heart, blood vessels, and l...

Overview of the cell - Cell Functions: Breathe, Produce energy, and communicate. - Cells are divided into two compartments: Cytoplasm and Nucleus - Shape determined by a cytoplasmic skeleton. Histology Focuses "on how cells' structure and arrangement optimize functions specific to each organ" S...

True or false: The clitoris is composed of erectile tissue: 2 corpora cavernosae, glans, and corpus spongiosum. False--NO corpus spongiosum The mesentery (whole double layer of peritoneum) is called the: Broad ligament What are five structures found within the broad ligament? The uterus, uterine t...

Define evolution change is allele frequencies in a population over time What are the 4 requirements for natural selection? - Phenotypic variation in the population - Variation to be heritable - More individuals are born than can survive to reproductive age - Agent of selection operates on behaviora...

The initial signal to initiate a contraction of the heart is located in the sinoatrial (SA) node The first branches off the aorta are the coronary arteries The heart valve that prevents backflow into the right ventricle is a: semilunar valve Which of the following vessels of the same diameter has...

Muscle contraction involves the movement of actin and myosin relative to each other. Which of the two attaches to the z-line of a sarcomere? actin filaments During the elevation of the shoulder by the trapezius muscle which of the following would shorten? i-band of the sarcomere Which type of musc...

Two general approaches for studying cells and tissues? 1. Histological Approach (most frequent) 2.Direct Observation What does direct observation of cells and tissue entail? Cell and organ culture Transillumination of organs Radiation probes Vital and supravital staining Achondroplasia one form of...

What statement best describes use of the term adaptation in biology? A) Word used to describe a trait or character B) Word used to describe an evolutionary process C) Word used to describe a process of phenotypic adjustment within individuals D) Any of the above D) Any of the above What is biologic...

Which of the following cellular structures is an intermediate filament? Vimentin The microfilaments that form a framework within a microvillus is formed by Actin The cytoskeleton structures that guides vesicles in their movement within cell are Microtubules Lipid synthesis is a function of which ...

In an anterior view of the intact heart, you expect to see what structure prominently (compared with the posterior view of the heart)? The right atrium Which part of the epicardium is most responsible for preventing fluid or blood from entering or exiting the pericardial sac? Fibrous Pericardium T...

Name an opportunity of visualizing animal behavior You can visually depict subtle postural states You can clearly show experimental design Name a challenge for visualizing behavior Motion as static for 2d graph/paper - hard to show motion on a piece of paper that is 2D Chances of misinterpretation ...

Herb, fleshy leaves, 2 sepals, 5 petals, free-central placentation montiaceae Basal rosette of leaves with palmate venation; 2 partially fused carpels saxifragaceae Fleshy green stems, flowers with many tepals and stamens, inferior ovary cactaceae Shrub with tough, leathery leaves, urn shaped flo...

The cells that form the visceral capsule of the renal corpuscle are Podocytes The epithelium that lines the renal pelvis would be classified as: transitional epithelium The emptying reflex of the bladder is controlled by the: Parasympathetic nerves from coccygeal spinal nerves The collecting duct...

How is sound transduced to a sense of hearing? Sound wave represents alternating areas of high and low pressure → tympanic membrane vibrates in response to sound wave → vibrations are amplified across ossicles → vibrations against oval window set up standing wave in fluid of vestibuli → pres...

Types of Epithelium 1. Glandular 2. Covering or lining Characteristics of Epithelium 1. Have free surface- exposed to external orientation and a basal surface attached to basal lamina 2. Avascular 3. Have a nerve supply 4. High capacity for renewal Covering or Lining Epithelium Cells organized int...

Adaptation word used to describe a trait or character. Describes an evolutionary process - a process of phenotypic adjustment within individuals - infers that increasingly good fit between organism and environment is brought by the process acting on heritable genetic or epigenetic changes Acclimati...