Biology Questions

Select the best answer for the question 7 When cutting thin material such as tubing a hacksaw blade with OA 32 or more OB 22 32 O C 12 or fewer D 12 22 highlighted on the review page teeth per inch should be selected

13 Floor 60 Main Stack O A 4 4 O B 6 2 O C 5 2 O D 1 4 O Mark for review Will be highlighted on the review page 6 Take a look at the figure shown Given a desired slope of 1 4 inch per foot and the dimensions shown in the figure calculate the distance from the top of the soil branch pipe to the floor level at the point where it attaches to the vertical main stack

What does it mean to be double negative Double positive Fo Curliest Thy mocyte Stage Double nagetire both CD4 CD8 Double positive includer CD

Consequentialism states that the consequences of one s actions determine whether the action was ethical or not ethical However it may be difficult to determine how everyone is affected by an action The consequences of our actions may be considered differently depending on whether we are considering the effects on O Our own self Ethical Egoism A group of people Group Consequentialism Everyone Utilitarianism

What are co stimulatory molecules What are co inhibitory molecules What are superantigens

In 1972 Ralph Nader defined whistleblowing as an act of a man or a woman who believing in the public interest overrides the interest of the organization he serves publicly blow the whistle if the organization is involved in corrupt illegal fraudulent or harmful activity What this means is that a person may see their organization do something wrong and will make the wrongdoing publicly known True False

Platyhelminthes includes acoelmate organisms such as the which have no distinct body cavities A jellyfish B flat worms C octopi D snails

Is antigen presented on MHC Class I or II What is the CLIP for Class II e able to recognize the structure of MHC Class I and II

What does it mean to be double negative Double positive Is CD4 found on Tc or TH cells What is the function of a helper T cell What is an antigen presenting cell APC Is CD8 found on Tc or TH cells What is the function of Tc or cytotoxic T cells CTLs What is perforin

insulin Blank 1 After 10 min in the bowl with insulin the gold fish went into a coma Ta regain consciousness and control of its muscles the fish is transferred to a dish containing

The hormone insulin tends to blood glucose levels increase decrease decrease decrease decrease increase increase increase blood glucose levels while glucagon

E Blank 1 The above picture is a dissected sheep brain What is the name of the section labeled A

ES Blank 1 The above picture is a dissected sheep brain What is the name of the section labeled C

Blank 1 After 10 min in the bowl with insulin the gold fish went into a coma To regain consciousness and control of its muscles the fish is transferred to a dish containing Question 15 1 point The primary structural and functional unit of all nervous systems is the gland spine neuron A brain

Match the following terms to their respective functions in the nervous system Sends messages to muscles or glands Coordinate the flow of messages from sensory to motor cells Receive data from sense organs 1 Motor neuron 2 Sensory neuron 3 Interneurons

MHC Class I is expressed on expressed on whila Ta cells recognize while MHC Clas TH cells recognize

antigen presented on MHC Class I or II 2 What are proteostomes

and transplanted them in mouse 3 which had been thymectomized and lethally irradiated no T cell Use experiments Zinkernagel took bone marrow from mouse 1 and a thymi producing T cells from mouse 1 those T cells will mat ure in thymus and be exposed to self antigens He them challenged the reconstituted mouse with LCM virus and removed spleen cells These splee incubated with LCMV infected target cells cells expressing MHC plus antigenic components of the different MHC haplotypes and the lysis of the target cells was monitored The results of 2 such e using H 2 strain C57BL 6 mouse 1 mice and H 2 mouse 2 strain BALB C mice are shown in the Remember that the TCR has to recognize the MHC antigen complex of the haplotype in which it wa recognize A B Experiment Bone marrow and thymus donor Mouse 1 H 2 x Mouse 2 H 22 Mouse 1 H 22 Mouse 2 H 22 Thymectomized x irradiated recipient Mouse 1 x Mouse 2 H 2bxd Mouse 1 x Mouse 2 H 2bxd Lysis of LCN H 2d All of the cells in these mice suiral antigen

a At what stage do you find gene rearrangement b At what stage do you find expression of IgM c At what stage do you find expression of IgD d At what stage do you find class switching

D E 1 C Blank 1 This picture is a posterior view of the mammalian heart Name the vessel labeled B

H G A B C Blank 1 This picture is an anterior view of the mammalian heart Longitudinal

Blank 1 These cells are from a slide of

O Arterial pressure when ventricles are relaxed Arterial pressure when all chambers of the heart are relaxed Arterial pressure when all chambers of the heart are contracted Arterial pressure when ventricles are contracted Question 4 1 point Why did the vertebrate heart evolve from a smaller two chambered pump to a larger more robust four chambered one To be able to handle pumping blood through larger animal bodies The four chambered heart increases the flow rate of blood through the body in order to meet the higher oxygen demand of endothermic animals The four chambered heart separates the blood circulation into one circuit for vital organs and one circuit for nonvital structures More derived vertebrate groups have a more complex and robust four chambered heart because they have more complex nervous systems

Identify the tunic Z in the blood vessel shown below Lumen Z X Y

Inflatable cuff sphygmomanometer stethoscope respirator spirometer known as a Pressure gauge Air control valve Bulb

H 2 target cells fakat 51 Cr release no lysis H 2k LCM virus Spleen cells containing T cells H 2 LCM infected target cells MHC Haplotype 51 Cr igure H 25 LCM infected target cells Differen haplotype 451 Cr release 51 Cr release no lysis lysis Shows that CTLs can only kill cells infected with

An aqueous solution has a measured pH 2 00 What is the H in this solution Pay attention to significant figures Select one O a 0 0100 b 0 01 c 0 010 d 0 0

Two plants that are heterozygous for flower color and produce red flowers are crossed Some of their offspring produce white flowers Which claim is best supported by this information A New combinations of alleles can form due to lateral gene transfers during conjugation B Inheritable genetic variations can arise due to mistakes made during replication C New combinations of alleles are inherited from two different parents due to fertilization D Inheritable genetic variations can result from mutations caused by environmental factors such as chemicals

Parents grounding a child for bad behavior is a type of conditioning as the punishment isn t related to the crime A proximal B operant C classical D optimal

Behavior in response to working with others is as the interaction provides an evolutionary advantage A habituation B socialization C classical conditioning D proximal conditioning

A The cause of a behavior is a result of your genetics or your nature optimal B proximate C ultimate

The scales of the Chondrichthyes are described as being tooth like The scales are described as a spiracles b nostrils c placoid d claspers e cloaca

A fish that automatically moves towards an electrical current is exhibiting an innate A affective response B desire C sensory function D taxis

a Chondrichthyes Ob Mammalia c Crocodilia d Amphibian O e Testudina Question 5 1 point Which of the following is NOT a characteristic of protostomes Blastopore developing into the mouth Spiral cleavage Enterocoelous mesoderm development

Eating excess sugar triggers feedback in which the pancreas releases insulin to assimilate sugar into the cells A aseptic B negative C positive D neutral

The screw like shapes in the shark s small intestine are called O a papillary b pyloric c spiral d pancreatic valves

All of the following are classes of the phylum Echinodermata except O a Crinoidea b Tunicata c Holothuroidea d Echinoidea O e Asteroidea

A A B C The letter A is pointing to the a hind wing b spiracle c thorax D E

This squid is 1 5 Ob a male 4 2 9 a neither male nor female both male and female 3 10 2 7 8 4 1

8 a 8 10 1 Which number s in the image above represents the foot 5

To which of the following phyla does the grasshopper belong a Echinodermata Ob None of these c Arthropoda d Mollusca

2 2 Ob 13 7 O c 12 7 1 8 3 10 4 The number identifying the telson is O a 4 8 9 5 9 10 11 6 12 13 11 12

Which of the following are used to identify the sex of insects like the grasshopper O Ob Trochanters a Spiracles c Malpighian tubes d Ovipositors Question 11 1 point Which of the following is NOT a subphylum of the Arthropoda Chelicerata Uniramia Gastropoda

Nervous system signals are electrochemical responses as hormones called are released between the synapses of neurons A thyroxine B neurotransmitters C vasodilators D vasoconstrictors

To which of the following phyla does the squid belong a Mollusca O b Echinodermata Oc Arthropoda d None of these

A The letter C is pointing to the a femur b ovipositor C

Which of the following classes belong to the phylum Arthropoda a Insecta Ob Bivalvia c Cephalopoda d Stelleroidea e Polyplacophora

The term referring to the eyespots is O a valvular Ob ocelli Oc siphons d operculum

The above image is that of a group of a bivalves b gastropods c crabs

Which of the following is NOT a part of the leg of the grasshopper a Coxa b Tarsus c Trochanter d Femur e Tympanum