Biology Questions

Experimental studies on humans are conducted as double blind studies What does this mean O The subject and scientist are unaware of who receives the placebo O The subject and scientist are aware of what the experiment is about O Both the subject and the scientist are aware of who receives the placebo ntc

Ebola may fall under the form of transmission called direct droplet transmission True False

Which of the following terms is correct for COVID 19 Epidemic disease Pandemic disease Endemic disease Notifiable disease Question 2 According to the graph below HIV incidence has a steady decrease from 1995 to 2010 in the U S

Connect the term to the action of the bacterial virulence factor Adhesins Exoenzymes DNAse Endotoxin Toxic shock syndrome toxin Choose Choose Produce by S aureus to break down a net of host s DNA that would keep the bacteria trapped Extracellular enzymes that break down intercellular matrix components of the host s adjacent cells Molecules on fimbriae and pili that attach to the surface of intestinal epithelial cell receptors Superantigen that stimulates excessive immune system activation LPS on OM of Gram negative bacteria triggers inflammatory response on the host Choose

What are examples of fungal virulence factors O Aflatoxin Gliotoxin Elastase Catalase O All are correct

How does malaria impede blood flow O The protozoan produces capsules that cover the pathogen to evade phagocytosis O The protozoan produces adhesins that are expressed on the surface of the RBC causing them to stick to each other and to the inner surface of the blood vessel O No answer text provided O The protozoan is large enough to evade the immune system Question 9 0 5 pts

Viruses attach to host cells by using capsid proteins that bind to the host s cell membrane receptors O True O False Question 8 How does malaria impede blood flow 0 5 pts The protozoan produces capsules that cover the pathogen to evade phagocytosis O The protozoan produces adhesins that are expressed on the surface of the RBC causing them to stick to each other and to the inner surface of the blood vessel No answer text provided

3 Which of the following names is of particular concern regarding the portal of entry on the stages of pathogenesis Mark all that apply TORCH Listeria monocytogenes Coughing Urination Question 5 0 5 pts

Neoplastic O Zoonotic Olatrogenic O Degenerative Question 3 0 5

According to the graph what is the number of virions that caused 60 out of 200 rats to die from the viral infection Percent mortality in experimental group 100 90 80 70 60 50 40 30 20 10 0 10 102 103 104 105 106 107 108 10 Number of pathogenic agents cells or virions 0 O 10 virions O 100 virions 1000 virions virions

Helminths have proteases that degrade the hosts antigens to evade the immune system O True O False Question 10 What is the main virulence factor of Cryptococcus 0 5 pts

Organize the following sentences according to Koch s postulates 1 2 3 4 A The pathogen must be isolated from the new host and must be identical to the initial pathogen Number Select B The suspected pathogen can be isolated and purified Number Select C The suspected pathogen must be found in every case of sick patients and be absent from healthy individuals Number Select D The healthy individual that received the pathogen must develop the same signs and symptoms as the initial infection Number Select

Answer the following questions This portion constitutes 25 of this total lab 1 Compare and contrast the process of mitosis and meiosis This response will require at least 10 sentences and a full explanation I

We talked about 4 different types of movement that lipids within a membrane experienc a Draw a sketch that outlines these 4 different movements Scramblave Flix and alarease

There are many different types of nerve cells that allow our bodies to function One such cell ar astrocytes Please explain the function of astrocytes why this function is vital and how these cells accomplish this function

We talked a couple weeks ago about red blood cells and their ability to carry oxygen but this week we discussed red blood cells and their interesting shape Why do red blood cells have such a unique shape How does this unique shape help red blood cells accomplish their goals

There is a lot of belief that this molecule you outlined in b has a much greater ability to carry oxygen than hemoglobin but we know shockingly little about this molecule Why do you think so little research has been done on this molecule What are some moral or social implications regarding how little this molecule has been studied

oteins flippase and floppase only work on organelle membranes that are inside the cell they o not work on the cell membrane However the cell membrane is still highly asymmetrical Please explain the process through which the cell membrane is able to be asymmetrical without the use of flippase and floppase Include sketches in your explanation a

Which of the following genotypes causes Jacobs syndrome O XO XXX O XXY OXYY

What two enzymes are necessary to detoxify the ammonium ion in the presence of pyruvate Check all that apply glutamate dehydrogenase alanine aminotransferase aspartate transaminase ATP lactate dehydrogenase Submit Previous Answers Request Answer X Incorrect Try Again 2 attempts remaining 4 inace catalyzes the transamination reaction between aspartate and a ketoglutarate or glutamate however a ketoglutarat

Show the fate of the carbon atoms in the metabolism of glutamate shown below by dragging the appropriate molecule names onto the flowchart HO H N C C O I Drag the appropriate labels to their respective targets View Available Hint s acetyl SCOA malate glucose succinate a ketoglutarate furnarate citrate axaloacetate pyruvate citric acid cycle H glutamate succinyl SCOA malate gluconeogenesis CH CH C O glutamate Reset Help

Succeeding in biotech entrepreneurship and innovation requires a solid life sciences foundati Build a strong foundation through Work experience Research experience

QUESTIONS ONA Rejan Uses light Untwists strands Relives torque 12 11 2 Holds open Damage 13 Cut out damage 1 DNA strand Attachment for enzyme 10 Replicates lagging end 4 Reads copies DNA 5 Continuous assembly 6 Discontinuous assembly Fragments 8 00 7 Links fragments A RNA primer Telomerase C DNA se D Oyras E Excision repair FDNA polymerase GMutation Single stranded binding proteine Photo repair Leading strand K Okazaki L Helcase MLagging strand

QUESTION 4 Match the repair response to its proper mechanism SOS Response Excision Repair Photo repair Mismatch repair A Found in E coli when massive damage occurs B When thymine dimers are produced due to sun damage C When incorrect bases are matched they are replaced by the correct base D A damaged portion of DNA is removed and then replaced 4

on Completion Status Relives torque 33333333333 V S VB 10 V 11 Untwists strands 812 12 11 Holds open DNA strand g Attachment for enzyme 10 13 Continuous assembly 6 A RNA primer B Telomerase C DNA ligase Reads copies DNA 5 D Gyrase E Excision repair F DNA polymerase i G Mutation H Single stranded binding proteins L Photo repair Leading strand K Okazaki L Helicase M Lagging strand Discontinuous assembly Fragments 8 40 Links fragments 7 9

Can you please write a takeaway message about Entrepreneurship and Innovation

Can you please write a takeaway message about Entrepreneurship and Innovation

Within DNA adenine will always bond with Spelling counts QUESTION 2 In DNA the 5 carbon sugar is and cytosine will always bond with while in RNA the sugar is

www witn Entrepreneurship in Biotech Bridge the gap fro classroom to commercializatic

What two enzymes are necessary to detoxify the ammonium ion in the presence of pyruvate Check all that apply glutamate dehydrogenase alanine aminotransferase aspartate transaminase ATP lactate dehydrogenase

Venture hit a dead end Academic vs business landscape Hindsight Adaptability and resilience

Time left 0 28 Match the terms with the appropriate number on the specimen provide below Rhizoids Gemmae cups Sporophyte Thallus 2 Archegoniophore Choose Choose Choose Choose Choose FIRST 3 64 5

How many openings to the digestive system does this organism have hint does it have an incomplete or a complete digestive system must enter a numerical value for credit Answer on yan RETU Time left 0 26 0 25 mm

Identify the missing label from the digestive system of the specimen shown below Mouth Select one Ospiracle Oanus Othorax O abdomen O prop Pharynx Esophagus Gizzard Intestine

Time left 0 27 Identify the following flowering plant as belonging to monocots or dicots and why Select one O dicot it has flower parts in groupings of four or five and netted venation O monocot it has flower parts in groupings of four or five and netted venation O monocot is has flower parts in groupings of four or five and parallel venation Oneither this is a magnoliid I don t have enough information to answer this question

Identify the cross sections of the specimen seen here in order from left to right by comparing the morphology between the three Select one O roundworm flatworm Earthworm OEarthworm flatworm roundworm Oflatworm Earthworm roundworm O flatworm roundworm Earthworm O Earthworm roundworm flatworm fr SORRY

Time left 0 2 True or false The micrograph seen here is of pine pollen which has a characteristic Mickey mouse head shape Select one O True

The specimen seen here is a dried plant sample mounted on paper as an herbarium plant museum sample Time left 0 28 10 Based on your knowledge of seedless plants identify the dominant life cycle stage of this plant group Is the specimen seen here the dominant lifecycle stage UNIVERSITY OF SOUTH FLORIDA HERBARIUM 110783 Asplenium cristatum Select one sporophyte dominant yes this is a sporophyte O gametophyte dominant yes this is a gametophyte O sporophyte dominant no this is the gametophyte stage O gametophyte dominant no this is the sporophyte stage

Examine the leaf and flower samples provided below When this plant started growing as a seed would you have expected it to have one or two cotyledons Leaf samples Flower sample Time left 0 29 2 Select one

Which of the following pictures represent a mature pine ovule that is ready to be fertilized Select one O A B and C O A B and D O A and B C and E O E only A D B Time le E

Identify parts A and B in the figure below Select one OA ovules B ovary A stigma B style A ovary B ovules OA ovules B stomata OA carpels B ovary Time le A Next pag

Match the phrases with the appropriate number on the specimen provided 2 Female sexual reproductive structure Asexual reproductive structure Non vascular structures that fasten organism to a substrate Main body tissues of the 2n generation Main body tissues of the In generation F Male sexual reproductive structure K Time left 0 34 3 Choose Choose Choose Choose Choose 4

How many tissue layers does this specimen have must enter a numerical value for credit WE 0 25 mm

Which of the specimen seen here exhibits a pseudocoelom Select one O the specimen on the far left O the specimen in the middle O the specimen on the far right O all of the above none of the above Time

the space provided 18 I List in the correct order all of the signals needed during translation to make this transmembrane protein It will not be part of the mitochondrion or chloroplast Use the names of the signals bes olozsv m ng NH COOH CYTOSOL ER LUMEN botalamon riendly Has the ER signal sequence been removed

Knowing that and Fig 11 The main difference between the absorption spectra of NAD and NADH is that the absorption spectra of NAD has a single peak at 260 nm while the absorption spectra of NADH has two peaks one at 260 nm and the other at 340nm and ENADH 6 220 M x cm 340 SNADH 260 14 300 M 1 x cm NAD 8260 18 000 M 1 x cm 1 and that absorbances are additive meaning that total absorption of light at any given wavelength is the sum of the absorbances the two or more substances would show if measured individually under the same conditions Therefore A260 total A260 NAD A260 NADH Calculate NAD and NADH concentrations M on the basis of A260 and A340 A260 0 75 A340 0 23 A Exl

What is the beta diversity of the following ecosystem A B C GIH E D C F B J CA BK G

Which statement correctly describes the urea cycle View Available Hint s O The urea cycle is not connected to other cycles all intermediates come from the cellular pool of metabolites O The urea cycle is important for recycling amino groups in the cell O The urea cycle is an overall exergonic cycle O The urea cycle begins with endergonic steps

What is trauma cognitive behavioural therapy Please explain in a paragraph and in your own words no Al

7 How does knowledge of the Bombay phenotype completely destroy the paternity case described in 6 2 points