Biology Questions

Which of the following options best describes the following statement Either you are going to win or you are going to lose It is a disjunction It is a conjunction It is a conditional It is a negation

A cell has completed G2 and moved on to M phase A spindle fiber has not properly connected to a kinetochore Which of the following will happen first in a healthy functioning cell O cyclin dependent kinases will be removed from the cytoplasm by enzyme degradation O The daughter cells will have unequal numbers of chromatids following anaphase The daughter cells will have unequal numbers of chromosomes following metaphase A regulatory signal will be sent to halt M phase moving forward until the spindle can connor

at which stage of Meiosis do daughter cells become haploid Following Prophase of Meiosis II O Following telophase of Meiosis II O Following anaphase of Meiosis II Following anaphase of Meiosis I

Paramecium aurelia is an organism that can reproduce both sexually and asexually It does not have cell walls or tissues To which kingdom does it belong O A Animalia OB Fungi O C Protista OD Plantae

6 Describe what happens during an action potential hint a labelled diagram may be useful

1 How did the leech get anesthetized

b How would blocking calcium not allow muscles to contract and paralyze the fish

8 When probing the leech which section of the neuron responded to the brush ex 1 mark central or outside neurons

a What protein does calcium bind to on the actin filament that initiates the sliding filament model ex muscle contraction

6 What are the 3 different tools used to stimulate the leech s skin

3 What neurotransmitter will not be released if calcium channels are blocked 1 mark

b What halts the gliding motion of the myofilaments

4 The muscle contracts when thin and thick filaments slide past each other What is this called 1 mark

1 Draw the synapse and identify the main parts of a pre synaptic cleft and a post synaptic 5 marks cleft include vesicles neurotransmitters receptor proteins or channels

a Explain the role of calcium in signaling an impulse to the motor neuron

5 How is an electrical synapse different from a chemical synapse

1 Muscles are striated What are the thick and thin filaments called that make the muscle 2 marks striated Identify which is thick and which is thin

4 What is an electrical synapse

3 What are neurotransmitters Include an example

4 What encases the leech s nerve cord

3 In step 5 of the procedure why can you not see the nervous system even though the other organ systems are present 1 mark

2 What part of the nerve cell is on the pre synaptic side hint the neuron that transmits the signal to the dendrite 1 mark

2 Inside the leech what type of blood is visible

Marsupial mammals Love the one you re with TO According to the phylogeny the bilby is most closely related to the devil

1 Biology scientific study of life CELL SYSTEM OF ORGANS ORGAN TISSUE CELL ORGANELLES MOLECULE ATOM ORGANISM BOMA POPULATION HERE BIOCENOSES ECOSYSTEM 2 Science Any method of learning about the natural world that follows the scientific method TUTUTUTUT 1

Supporting cell Olfactory bulb Olfactory gland Olfactory cilia Olfactory epithelium Olfactory stem cell Olfactory sensory neuron Mitral cell Olfactory tract 00 141 Route of inhaled air containing odor molecules Pearson Reset Help

Match the following sensory receptors to the stimuli they detect Match the words in the left column to the appropriate blanks in the sentences on the right Make certain each sentence is complete before submitting your answer thermoreceptors mechanoreceptors nociceptors photoreceptors chemoreceptors 3 4 5 stretch temperature light energy chemicals in solution pain Reset Help

Excessive UV radiation causes a healthy tan along with many skin and immune system benefits only causes tissue damage and skin cancer in people with fair skin can cause tissue damage and can alter the DNA of skin cells which may lead to skin cancer is a potential treatment for COVID 19 infection because it is harmless to human cells

Match the tissue type with its function protection from wear and tear supports and binds other tissues can act as a water reservoir filtration and exchange of substances via diffusion absorption and secretion withstand high tension and stretching particularly in one direction 1 Simple squamous epithelium 2 Simple columnar epithelium 3 Stratified squamous epithelium 4 Dense regular connective tissue 5 Areolar connective tissue

regions called median sagittal frontal transverse Question 3 2 points Listen Homeostasis gh the body dividing it into anterior and posterior is unimportant for our overall health helps keep our body functioning optimally by maintaining relatively stable conditions internally despite environmental changes refers to our body s response to infrequent events that do not require continuous adjustment

dy cavity houses the viscera whereas the ventral body cavity hoses the nervous system True False Question 5 2 points Listen Which of the following is false regarding water It helps to maintain temperature homeostasis by absorbing and releasing heat with little temperature change It is the most abundant and important inorganic compound in living organisms It is a necessary part of hydrolysis and dehydration synthesis reactions It is the universal solvent due to its poppolar properties

The sodium ion concentration is higher inside the cell than outside and the potassium ion concentration is higher outside the cell than inside True False

Detoxification of drugs Converting glycogen to free glucose Absorption synthesis and transport of fats Manufacturing of all secreted proteins Question 9 2 points a function of the smooth ER Listen Which of the following describes the plasma membrane a double layer of protein enclosing the plasma a single layered membrane that surrounds the nucleus of the cell a membrane composed of tiny shelves or cristae a phospholipid bilayer surrounding the cell

Match the cell junction with its description An impermeable junction formed by the fusion of integral proteins from adjacent cells 2 3 v 1 v Pores between adjacent cells that allow the exchange of small molecules An anchoring junction that helps bind adjacent cells into sheets 1 tight junction 2 desmosome 3 gap junction

does NOT characterize proteins Their function depends on their three dimensional shape They may be denatured by heat or acidity They have both functional and structural roles in the body They contain the genetic information of the cell Question 7 2 points Listen All ions are electrolytes because they can conduct an electrical current in solution True False

rough ducts are classified as ceruminous sebaceous exocrine endocrine Question 13 2 points Listen their products directly into the blood rather Select ALL of the following that are true of cardiac muscle cells They are considered involuntary muscle They contain multiple nuclei They are found only in the walls of the heart They branch and join

Functions of hair include Perception of insects on skin Prevention of heat loss Protection from sunlight All of the above

In endochondral ossification which tissue is the newly forming bone replacing fibrocartilage hyaline cartilage dense fibrous connective tissue elastic connective tissue

Select All of the following that are true of the dermis The superficial papillary layer is areolar connective tissue Collagen fibers in the dermis give the skin strength and resiliency while elastic fibers give skin the ability to stretch and recoil The deeper reticular layer is composed of reticular connective tissue Dermal papillae are superficial peglike projections of the manillar

Select whether each of the following is true for smooth muscle or skeletal muscle each fiber is innervated by a nerve forming neuromuscular junctions calcium binds to calmodulin which leads to the activation of myosin calcium binds to troponin leading to the exposure of the myosin binding sites triad relationships between T tubules and terminal cisterns play a crucial role in contraction synchronized contractions due to gap junctions that spread action potentials to all fibers innervated by the autonomic nervous system 1 smooth muscle 2 skeletal muscle

Select ALL of the following that are true regarding flat feet It is not considered a congenital condition and is only acquired later in life Risk factors for flat feet include age obesity and high impact activity Orthotic shoe inserts can help manage symptoms Footwear with good arch support may help prevent it

Match the receptor with its stimulus spiral organ crista ampullaris maculae 1 pressure waves hearing 2 change in head position along a horizontal plane 3 rotational acceleration

Select ALL of the following that are true regarding skeletal muscle fiber contraction Acetylcholine ACh binding to its receptors causes voltage gated sodium channels to open producing an end plate potential Acetylcholine ACh released by the motor neuron diffused across the synaptic cleft and binds to its receptors on the muscle fiber s sarcolemma Sodium entering in to the cell causes depolarization and potassium exiting from the cell causes repolarization Following the end plate potential there is a wave of depolarization that causes voltage gated sodium channels to open resulting in more sodium entering the cell

Which of the following surrounds the individual muscle cell epimysium endomysium fascicle

medially is called pes planus herniated palate colles palate cleft palate Question 25 2 points 4 Listen Synovial joints left halves of the palate do not fuse are all diarthrotic contain a fluid filled joint cavity have an inner synovial membrane that secretes synovial fluid for lubrication and nourishment of the articular cartilage

Select ALL of the following that influence synovial joint stability number and location of joint ligaments number of bones in the joint 100 muscle tone that keeps tendons crossing the joint taut shape of the articular surface

Match the eye structure with its function V retina ciliary zonule choroid cornea lens supplies blood to all layers of the eyeball and absorbs light to prevent scattering 2 holds lens in position 1 3 4 5 contains photoreceptor cells that transduce light energy changes shape to precisely focus light on retina lets light enter the eye and bends light as it enters the eye

Articulations permitting only slight degrees of movement are Amphiarthroses Synarthroses Diarthroses Synovial joints

location of the muscle size of the muscle shape of the muscle action of the muscle Question 33 2 points Listen to the A term such as rectus in a muscle s name refers to the location of the muscle direction of the muscle fibers number of origins action of the muscle

the following is not a function of astrocytes anchor neurons to blood vessels provide the defense for the CNS support and brace neurons guide the migration of young neurons synapse formation and helping to determine capillary permeability Question 35 2 points Listen Collections of nerve cell bodies outside of the central nervous system are called tracts ganglia nuclei norves