Biology Questions and Answers July 27, 2020

What is the role of the Golgi apparatus in eukaryotic cells?

Allie is good friends with Samuel. It is Samuel's birthday and Allie brought a gift for him. The gift is a game called Happy strings. For playing the game, Allie picks up a string and chooses a number A. Samuel has to find the maximum distance (distance is given by the number of characters in between) between any 2 subsequent same characters in

Discuss in detail sonographic techniques for scanning the liver.

A parent possesses two copies of each gene. When this parent passes on its alleles for a gene, how much does it contribute to each of the offspring?

Question 1: During intense exercise, can a muscle cell use fat as a concentrated source of chemical energy? Explain.

Due to the physiological conditions of the stomach, it was surprising to discover that bacteria such as H. pylori can colonize the stomach. Describe the virulence factors the bacteria use to establish colonization in the stomach. Describe the immune response the human host develops against H. pylori infection. Then, provide 3 examples of how the

What theory was coined by Sutton and Boveri?

What happens during mitosis?

In a population of birds, 60% of the individuals have the genotype AA (homozygous dominant), 30% have the genotype Aa (heterozygous), and 10% have the genotype aa (homozygous recessive) for a particular trait. Is this population in Hardy-Weinberg equilibrium? Explain your answer.

Describe the structure and function of DNA. Explain how the complementary base pairing in DNA is crucial for its role in genetics?

Explain the process of photosynthesis in plants. Include the key molecules and organelles involved and discuss the significance of photosynthesis for life on Earth?

In a population of rabbits, the average birth rate is 10 offspring per female per year, and the average death rate is 5 rabbits per year. If the initial population is 500 rabbits, how many rabbits will be in the population after 5 years, assuming these rates remain constant?

n a laboratory experiment, you have a bacterial culture containing 1000 bacterial cells. If the bacteria divide every 30 minutes, how many bacterial cells will you have after 3 hours?

Vijay has suffering swelling finger of from the palm due to some allergic reactions. However taking Tablet Betnasol to instant relief, but after two days again swelling of palm hand fingers observed. What type treatment you suggest to Vijay in this case . Tell all answers in detail explanation.

Using the data on the 'data' tab, construct a scatterplot that compares the age and weight variables in the space below. Let the age be the 'x' variable and weight be the 'y' variable. In the scatterplot, include at least the ax's names and the title of the graph. 7b. Describe the scatterplot above. Identify the two variables and any correlation

Patient Infectious Disease Age Weight 1 70 321 2 3 4 5 6 7 8 9 06 10 11 12 13 14 15 1589828788833385 16 20 22 24 26 30 34 36 38 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes 63 56 63 65 75 62 59 83 69 65 57 68 70 75 56 63 55 73 81 45 62 51 63

Suppose U is a finitedimensional real vector space and T L(U). Prove that U has a basis consisting of eigenvectors of T if and only if there is an inner product on U that makes 7 into a selfadjoint operator.

The volume of blood pumped by each contraction of the ventricle is called the stroke volume. The volume of blood in the ventricle before systole is called the ventricular enddiastolic volume. The following graphs show the relationship between stroke volume and ventricular enddiastolic volume. Which one is correct 200 100 A 100 200 Ventricular

Link the tongue movement to the vagus nerve injury. How many pairs of cranial nerves are there in a rat's brain? show the request for occasions that mirror the myelinated filaments to the CNS Interconnect the Trigeminal to the fifth cranial nerve what do you are familiar Corpus callosum as shown by cerebral sides of the equator Which cranial

1.elaboarte on the weight of the brain that render it normal for effective psychological functioning 2.locate the brain topographically 3.propose the reduced part of the brain as exposed by the mid brain 4. . Which foramen is paired in mammalian brain?explain 5.locate/position the Roof of diencephalon and explain 6.waht is the relationship between

Name and describe at least 3 effects of global climate change. How is the international community responding to mitigate (make it better) these effects How are global responses enforced (if they are)

What is Recombinant DNA (rDNA) technology, and why is it significant in biotechnology? How is rDNA technology used to create genetically modified organisms (GMOs)? What are plasmids, and how are they used in rDNA technology? Explain the process of gene cloning using rDNA technology. What is a restriction enzyme, and what role does it play in rDNA

What is the significance of DNA supercoiling in molecular biology, and how does it affect DNA structure and function? Explain the concept of DNA methylation and its role in epigenetics. How does it impact gene expression? What is the function of telomeres in molecular biology, and how are they associated with cellular aging and cancer? What is the

What is the role of ligase enzymes in rDNA technology, and why are they important for creating recombinant DNA molecules? Explain the concept of gene expression in the context of rDNA technology. How are genes activated or deactivated in genetically modified organisms? What is the significance of selecting appropriate promoter sequences when

What is the central dogma of molecular biology, and how does it relate to biochemistry? Explain the structure and function of enzymes in biochemical reactions. What is the difference between DNA and RNA in terms of structure and function? Describe the process of protein synthesis, including transcription and translation. What are the key

P acquired a 60 interest in S when the share capital and retained earnings of S were 100,000 and 150,000, respectively. At the date of acquisition, the book values of the assets of S were approximately equal to their fair values. The fair value of noncontrolling interests as at the date of acquisition was 160,000. Statement of Financial Position

Based on the article: Figueredo, E.F., da Cruz, T.A., de Almeida, J.R., Batista, B.D., Marcon, J., de Andrade, P.A.M., de Almeida Hayashibara, C.A., Rosa, M.S., Azevedo, J.L. and Quecine, M.C., 2023. The key role of indole-3-acetic acid biosynthesis by Bacillus thuringiensis RZ2MS9 in promoting maize growth was revealed by the ipdC gene knockout

Total payroll expenses are equal to the sum of O the employees gross pay and the employers payroll costs. O salaries payable and the employers payroll costs. O the employees net pay and the employers payroll costs. O CPP, EI, income tax and salaries payable.

Read the following text and answer the following questions on the basis Of the same: Health is defined as a state of complete physical, mental and social well-being. A balanced diet, personal hygiene and regular exercise are very important to maintain gocxi health. Any disturbance of the structure or function of the body may be regarded as a

What is connective tissue? what is its characteristics?

Which of these has a completely divided circulatory plan? Select all that apply. A. Mink (Neogale vison) B. Red-eared slider (Trachemys scripta) C. Common yellowthroat (Geothlypis trichas) D. Gharial (Gavialis gangeticus)

The following figure represents cost of transport vs locomotor speed in a species of vertebrate over three distinct gaits. At which speeds would it volitionally engage in each gate? A. Roll: 10, run: 40, walk: 30 B. Roll: 50, run: 40, walk: 30 C. Roll: 30, run: 20, walk: 10 D. Roll: 40, run: 30, walk: 30

30 8 Cost of Transport 10 10 20 30 Swimming speed 40 50 gait roll run walk

According to the following figure, which species of these fishes is most likely smallest in terms of mass? Note: swimming speed is in cm/s. A. 1 B. 2 C. 3 D. Impossible to tell

30 8 Cost of Transport 10 10 20 30 Swimming speed 40 50 species 1 2 3

The following figure represents two oxygen-dissociation curves of Hb passing through a human cardiovascular system. Which curve represents a group of Hb tetramers closer to metabolically active tissues? Top black rectangle is Y. Bottom black rectangle is X. A. X B. Y C. Impossible to tell D. Other, explain. __________

100 80 T percentage 60 saturation of haemoglobin with oxygen 40 20 0 2 4 6 8 partial pressure of oxygenkPa 10

You wish to invest $1000 over one year in two accounts paying 5% and 6% annually. How much should you invest in each to earn $58?

Write a note on the defence mechanism based on Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR) that is used by bacteria to protect themselves from invading phage (also known as bacteriophage)

Describe A Mechanism That Led To The Clustering Of Genes In The CRISPR Systems Of Bacteria.

The following images represent confocal images of cells with fulllength Mira protein (Mira 1 830), which localizes to the plasma membrane, and truncations of the Mira protein that either localize to the plasma membrane andor the nucleus. How would you determine whether the membrane localization sequence of Mira is sufficient HAMira Mira 1830

The analytical expressions of a few modulated signals are given in Eq (1) to Eq (5). S (t) m(t) cos(wet) Eq (1) S (t) m(t) Acos(wet) Eq (2) S3 (t) m(t) cos(wet) F m(t) sin(wet) Eq (3) S4 (t) Acoswet km(t) Eq (4) S5 (t) Acoswet k5 tm()d Eq (5) (i) (ii) m(t) is the modulating (message) signal of bandwidth B cos (ct) is the carrier signal k4,

Two satellites A and B of masses m, and m (m2m) are moving in circular orbits of radii r and r (r 4r2) respectively, around the earth. If their periods are T and TB, then the ratio TATB is (1) 4 (2) 16 (3) 2 (4) 8

Escape velocity on a planet is ve. If radius of the planet remains same and mass becomes 4 times, the escape velocity becomes (1) 4Ve (2) 2V (3) Ve (4) Ve

The change in the value of g at a height h above the surface of the earth is the same as at a depth d below the surface of earth. When both d and h are much smaller than the radius of earth, then which one of the following is correct h 2 (3) d 2h (1) d (2) d (4) dh 3h

The total energy of a satellite is (1) always positive (2) always negative (3) always zero (4) positive or negative depending upon radius of orbit

Let T5(x) be the fifth degree Taylor polynomial of cos(0.8x) centered at 0. a. Find T5(x). (Enter a function. Dont use factorials in your answer.) T5(x) b. Find the largest integer k such that if x 1, the Taylor polynomial T5(x) approximates cos(0.8x) with error less than 10k. k0

A 330 PF capacitor and a 220 PF capacitor are each connected in parallel across a 6 volt dc source. The voltage across 330 PF capacitors is :- (1) 3V (2) 6V (3) 4V (4) 0V

Three equal capacitors, each with capacitance C are connected as shown in figure. Then the equivalent capacitance between A and B is :-

(1) C (3) Ulm A CC C (2) 3C 3C 2 (4) B

The potential energy-position graph of a particle is shown in figure. Then particle

U X X (1) is in stable equilibrium at x (2) is in stable equilibrium at x (3) is in unstable equilibrium at x (4) is in stable equilibrium at x3

A light and a heavy body have equal momentum, which one has greater kinetic energy (1) A light body (2) A heavy body (3) Both have equal kinetic energies (4) Data given is incomplete

If kinetic energy of a body increases by 21% ,the momentum of a body increases by - (1) 10 (2) 11 (3) 9 (4) 12

The displacement x of a body of mass 1 kg on a horizontal smooth surface as a function of time t is given by x second is (1) IJ (2) 2) J the work done in the first (3) (4),The displacement x of a body of mass 1 kg on a horizontal smooth surface as a function of time t is given by x second is (1) IJ (2) 2) J the work done in the first (3) (4)

A car of mass 1500 kg is lifted up a distance of30 m by crane A in 0.5 minutes. The secondcrane B does the same job in 1 minute. Theratio of their powers is (1) 1 : 2 (2) 2 : 1 (3) 1 : 4 (4) 4 : 1

The coordinate of the centre of mass of a system as shown in figure solid sphere hollow sphere (1) (3,0) a (3) () (0,a) (0,0) M MM (a,0) disk a a () (3, 1) 32 (4) (0, )

Two metal sphere of same mass are suspended from a common point by a light insulating string. The length of each string is same. The sphere are given electric charges q on one end and 4q on the other. Which of the following diagrams best shows the resulting positions of spheres (1) (3) 00 90 54 qo 64q (2) (4) qo 4q q

A capacitor is charged to store an energy U. The charging bettery is disconnected. An identical uncharged capacitor is now connected to the first capacitor in parallel. The energy in each of the capacitor is (1) 3U2 (2) U (3) U4 (4) U2

A semicircular arc placed in xy plane is charged as shown in figure. The electric field at centre O is (2) (3) (4) (32) 522 4Eor 52x 4Eor 52x 4xfor 25 4Eor XXX AY (42) above x direction , below x direction along x direction , along x direction

A charged metallic bob of mass m and charge Q is in equilibrium in presence of electric repulsion by Q (fixed) as shown in fig. Find Q 60 (fixed) (1) (2nEmg) 2L 12 (2) (4xEmg) 2L 12. (3) (87 mg)L (4) None L Q

A point charge q of mass M is located at the centre of a ring having radius R and charge Q. When it is displaced slightly, the point charge accelerates along the xaxis to infinity. Find the ultimate speed of the point charge 2KQq MR (1) (2) (3) KQq MR KQq V2MR (4) Zero

Given figure shows an arrangement of six fixed charged particles. The net electrostatic force F acting on charge q at the origin O due to other charges is (1) (3) A q (4) 14 (2) zero 94 2a 6q 4E 7q 2E 4 30 30 a Oq (3) Dq a B C 360 q 2a q

The decrease in the value of g on going to a R height above the earths surface will be (1) g2 (3) 4 (2) 58 2010 oolm (4)

At what distance d from the surface of a solid sphere of radius R field strength is same as at a distance from centre of sphere. R 4 (1) R (3) 3R (2) 2R (4) 4R

Charge on the 4uF. capacitor is 12V (1) 6 (3) 24 6.F 4uF (2) 12c (4) 36 2uF

A capacitor of capacitance 5F is charged to potential 20V and then isolated. Now an uncharged capacitor is connected in parallel to it. If the charge distributes equally on those capacitors find total energy stored in capacitor. (1) 200 J (2) 300 J (3) 400 J (4) 500 J

A capacitance (C = 50F) is charged to potential difference of 20V. the charging battery is disconnected and the capacitor is connected to another cell of emf 10V, with the opposite plate of capacitor joined with the (+) ve terminal of cell. Find the charge flown through 10V cell :- (1) 250 C (2) 500 C (3) 750 C (4) 1000 C

A rope is used to lower vertically a block of mass M at a distance x at a constant downward acceleration g/2. The work done by the rope on the block is

(1) Mgx (2) Mgx (3) (4) Mgx Mgx

A particle in a certain conservative force field has potential energy given by U = x yz. Force on the particle is :

(1) xyiyzjyzk (2) xyz ixzjxyk (3) 2xyz ixzj xyk (4) 2xyz ixzjxyk

A force F = 20 + 10y acts on a particle iny-direction where F is in newton and y inmeter. Work done by this force to move theparticle from y = 0 to y = 1 m is : (1) 30 J (2) 5 J (3) 25 J (4) 20 J

A force acts on a 30 g particle in such a waythat the position of the particle as a function oftime is given by x = 3t 4t 2 + t 3 , where x is inmetres and t is in seconds. The work doneduring the first 4 second is :- (1) 5.28 J (2) 450 mJ (3) 490 mJ (4) 530 mJ

An object of mass 4kg is dropped from a height 20 m. It reaches the ground with speed 16 m/s. Work done on the body by air friction is : (g = 10 m/s 2 ) (1) 288 J (2) 288 J (3) 312 J (4) 312 J

A uniform chain of length L and mass M lying on a smooth table and2/3of its length is hanging on the edge of table. The work done to pull hanging part on the table is :

(1) MgL (2) ML (3) 3 MgL (4) 9 2MgL 9

Calculate the work done for following F-d curves (1) (A - P); (B - Q); (C - Q); (D - R) (2) (A - P); (B - R); (C - R); (D - Q) (3) (A - P); (B - P); (C - Q); (D - R) (4) (A - P); (B - P); (C - R); (D - Q)

(A) (B) (C) (D) F(N) 50 15 100 10 F(N) F(N) 5 15 15 5 15 3 F(N) 2 1 to 2 1 2 3 1 2 3 d(m) 45 45 d(m) d(m) 1 2 3 4 5 6 d(m) (P) 100 J (Q) 13.5 J (R) 15 J

A engine pumps up 100 kg of water through a hight of 10 m in 5s. If the efficiency of theengine is 60% what is the power of the engine. (1) 33 kw (2) 3.3 kw (3) 0.33 kw (4) 0.033 kw

A body moves T (2131 4k) m T (31 4 5k) m under the influence of from to a position position, a a constant force F (41 1 6k)N . The work done by the force is (1) 65 J (2) 58 J (3) 59 J (4) 60 J

A particle located in one dimensional potential field b X3 a x where a and b are positive constants. The position of equilibrium corresponds to x equal to 3a 2b has potential energy function U(x) (1) (2) (3) (4) 2b 3a 2a 3b 3b 2a

Two particles whose masses are 10 kg and 30 kg and their position vectors are ijk and jk respectively would have the centre of mass at (1) (3) ( i k) 2 ( i k) 4 (2) (jk) 2 ( i k) (4),Two particles whose masses are 10 kg and 30 kg and their position vectors are ijk and jk respectively would have the centre of mass at (1) (3) ( i k) 2 (

Two infinitely long parallel wires having linear charge densities and respectively are placed at a distance R. The force per unit length on either wire will be (1) (2) (3) (4) k22 122 R k2 2 R k 12 R R

A very small part is removed from the shell of radius R having charge density . Electric field intensity at point P in figure.

(1) (3) 280 (2) P 80 30

Electric field at the centre O of a semicircle of radius a having linear charge density is given as (1) 22 Ega (2) Eoa X (3) 2 2E (4)

If the electric potential of the inner metal sphere is 10 volt that of the outer shell is 5 volt, then the potential at the centre will be (1) 10 volt (2) 5 volt (3) 15 volt (4) 0 a

Figure shows electric field lines in which an electric dipole p is placed as shown. Which of the following statements is correct 9 P q (1) The dipole will not experience any force. (2) The dipole will experience a force towards right. (3) The dipole will experience a force towards left. (4) The dipole will experience a force upwards.

In an electric field the potential at a point is 343 given by the following relation V The r electric field at r 31 2j 6k is (1) 211 1442k (2) 31 2 6k (3) (31 2 6k) (4) (3 2 6k)

Figure shows a closed surface which intersects a conducting sphere. If a positive charge is placed at the point P, the net flux of the electric field through the closed surface P closed surface (1) will remain zero (2) will become positive (3) will become negative (4) will become undefined D conducting sphere

Two point charge, each of q, are kept at centre of cube O and vertex A. Find , from shaded face. (1) 5q 8E0 (2) 9 79 (3) 24 0 2q 0 (4) 59 24 0

Find net force on charge Q placed on Xaxis. y (1) (3) R Q 20 8ER 2Q 8ER R Q (2) (4) 2Q 4ER 220 8ER X

The K.E. of a satellite is 2 MJ. What is the total energy of the satellite (1) 2 MJ (3) MJ (2) 1 MJ (4) 4 MJ

Two particles of equal mass m go round a circle of diameter R under the action of their mutual gravitational attraction. The speed of each particle is (1) V 2 (2) V (3) V (4) V 2R Gm Gm 2R Gm 2V R 4Gm R

A parallel plate capacitor has a uniform electric field E in the space between the plates. If the distance between the plates is d and the area of each plate is A the energy stored in the capacitor is U, ( permittivity of free space) then electric field E is (1) (3) 2U 80 EQ (2) (4) 2U Eo Ad U Ad

A satellite is moving in a circular orbit around earth with a speed v. If its mass is m, then its potential energy will be 3 (1)mv (3) (2) my mv

Review the image below ( IN THE IMAGE BELOW ) representing different organisms that need to be classified. The first step in classification is identifying useful homologous traits. Examine the objects, and use them to answer the questions. Questions (USING THE IMAGE ABOVE): 1.) Describe one trait that all the species have in common (an ancestral

Humerus Radius Ulna Carpals Meta Carpals Phalanges Offer Flipper of Seal for Swimming Wing of Bird for Flying Patagium of Bat for Flying Forelimb of Horse for Running Human Arm for Grasping

Chen is cooking dinner for his family. He moves to pull a pot off the stove and accidently touches the burner. Reflexively he pulls his finger away from the stove and immediately feels the pain. What is the role of the brain and spinal cord in this response? Describe the three types of neurons involved in this response and their role in the reflex

1. Compare and contrast Marx's and Nozick's analysis to the case study "Twitter Has a Woman Problem" 2. How would Friedman respond? How would Freeman?

Twitter filed for an IPO yesterday, and amidst all the excited speculation, I couldnt help but notice that yet again, we are about to witness the gender gap in corporate America widen ever so slightly. Among the faces of the companys leadership team, its executive officers and board of directors, and its key shareholders, I see only one woman

Let xn,0 n N1, be a lengthN sequence with an Npoint DFT given by Xk, 0 k N1. Determine the 2Npoint DFT of each of the following length2N sequences in terms of Xk (0, 0nN1, Nn 2N1. (a) gn xn, 0nNI, Nn2N1, (b) hn xnN,

The researchers bought samples of whale meatall labeled simply as kujira, the generic Japanese term for whale meatfrom markets in Japan and sequenced DNA from these samples. They compared their data with sequences from known whale species. Because subspecies of whales from different populations differ genetically, the researchers were able to

Search and find any research paper about a topic of your interest and submit a summary at the attached link

What is an industrial/organizational psychologist? What type of training do they receive? What do I/O psychologists need to deliver to their organizations in order to be successful? What are some of the questions that I/O psychologists help to answer in organizations? How might I/O psychologists help the Bahamas.

Stakeholders refer to individuals or groups that can affect or are affected by the actions of the organizations. It is one of the biggest challenges to effectively balance the needs of various stakeholders. An organization needs to recognize and address the concerns of its stakeholders (such as employees or customers) in an ethical and fair

Which of the following systems isare causal y(t) x(1t) y(t) x(11) x(t1) y(t)x(lt2) t2 y(t) X(t) cos(w(t1)) dt Itl y(t) x(T1) y(t) x(1)u(t) y(t)x(t1)u(t1) y(t) x(2t)u(t),Which of the following systems isare causal y(t) x(1t) y(t) x(11) x(t1) y(t)x(lt2) t2 y(t) X(t) cos(w(t1)) dt Itl y(t) x(T1) y(t) x(1)u(t) y(t)x(t1)u(t1) y(t)

The diagram below represents the structure of the Lucky gene, which is expressed in every cell in the fruit fly. Gray boxes show exons box sizes are not to scale. Lucky is alternatively spliced, with exon 2 skipped in all cells in the head. Assume that polyA polymerase adds 200 nucleotides to each transcript. 40 Promoter 51 Translation Start Site

Part III Dihybrid, sex linked and extensionsremember and both so multiply, or either so add. 1. Flower position, stem length, and seed shape were three characters that Mendel studied. Each is controlled by an independently assorting gene. Character Dominant Recessive Flower position Stem length Seed shape Axial (A) Tall (T) Round (R) Wrinkled

In the shown circuit, Vs 1000 Vrms, R1 Ohm, L10 H, C 1 mF, and w 15 rads. L m 1 Vs C R Select one correct answer per each dropdownlist The amplitude of the total impedance (in Ohm) will be around Select The amplitude of the source current (in A) will be around Select And, the source active power (in W) will be around Select

Tales from the grave: Opposing autopsy reports from a body exhumed 1. Introduction Exhumations in criminal cases are rare, but on occurrence they can resolve issues that are either overlooked or unknown during an initial investigation. 1 An unknown issue can manifest itself through facts gleaned by further investigation or by advances in the

Dopamine Transmitter O O O O Transmitting Neuron Dopamine Packaged in Vesicles Dopamine Receptors Receiving Neuron Dopamine Transmitter Blocked by Cocaine No Reuptake Cocaine Dopamine

Biotechnology: Principles and Processes What is the criterion for DNA fragments movement on agarose gel during gel electrophoresis?