Menu

Previous Year Questions

Performance Meter

0%

TLS Online TPP Program

QUESTION ID:1

A circular dart board consist of three lines passing through the centre such that the circular region is divided into six equal parts. If the area of the circular board is 144π  square cm then find the perimeter of the any one region.

QUESTION ID:2

Four friends are wearing digital clocks. They have set a timer for drinking water. The timers have been set by them to ring after 30 minute, 1 hour, 1.5 hour and 1 hour 45 minute respectively. If their timer rang together at 12:00 noon. Find out the time when will they ring together again

QUESTION ID:3

For a certain sum, the simple interest in 2 years at 8% per annum is Rs. 90 more than the simple interest in 1.5 years at the rate of 10% per annum for the same sum. Find the sum.

QUESTION ID:4

Identify the wrong term in the following series.

ALARM, LAHMA, ARMAL, RAMLA, MALAR

QUESTION ID:5

Mohan gave 25% of certain amount to Ram. From the money received Ram spent 20% on fee payment, and 35% on buying books. After the expenses, he is left with Rs. 2700/-. How much money Mohan had?

QUESTION ID:6

From the following statement decide which of the arguments is a 'strong' argument and which is a 'weak' argument.

Statement I : Should taxes on colour television be increased further?

Argument I : Yes. Colour television is a luxury item and only rich people buy it.

Argument II : No. Televisions are bought by the poor too.

QUESTION ID:7

Five persons A, B, C, D and E are travelling to five different places viz., Hyderabad, Bangalore, Dehradun, Delhi and Pune using different mode of transport viz., Bike, Bus, Car, Flight and Train, not necessarily in the same order. A is not travelling to Pune and is going by flight. D is not travelling to Hyderabad and is going by Bike. E is going to Bangalore. C is going to Delhi by Car. One who is going to Dehradun is going by Bus. Which of the following combination is correct?

QUESTION ID:8

Which of the following options does not correctly match with given statement?

For body moving in a circular path, it is observed that a larger force is needed if:

QUESTION ID:9

In an election between 2 candidates, Baljit gets 60% of the total valid votes. If the total votes were 15,000, what is the number of valid votes that the other candidate Vicky gets if 20% of the total votes were declared inval

QUESTION ID:10

Find the number which when added to the terms of 3:5 gives the new ratio as 5:6?

QUESTION ID:11

A startup Science lab of nine employees pay its employees between 25,000 per month to 75,000 per month. The median salary of the lab is 55,000 per month. The highest earning employee got a device patent in the name of company, to appreciate the achievement she got a 25% hike in her salary. After this hike what would be the new median salary of the company

QUESTION ID:12

This graph shows the speed of a car in its journey of 10 hours. Which of the following statements is correct for the journey shown by the graph?


QUESTION ID:13

The above graph shows mid-year prices of some commodities. Which of the following statements is correct based on the above data

QUESTION ID:14

Immigration, Natality, Morality and Emigration changes ‘N’

In this figure, N is designated to

QUESTION ID:15

I am standing at the centre of a circular field. I go down south to the edge of the field and then turning left I walk along the boundary of the filed equal to three-eighths of its circumference of field. Then I turn west and go across to the opposite point on the boundary. In which direction am I from the starting point.

QUESTION ID:16

Consider the following conditions for two numbers

(A) their sum is 24

(B) the sum of 7 times of one number and 5 times of other number is 146.

Find the bigger number from the two.

QUESTION ID:17

The chart gives the population of 2 states from 2020 to 2025. For which state and in which year, there is highest rise in population percentage in comparison with the previous year?


QUESTION ID:18

In a coded language BLOOD is coded as 15, LOGICAL is coded as 21 DIRECTION is coded as 27 then which will be the code of REMEMBERING

QUESTION ID:19

Read the information given below:
(i) In a family of six persons A, B, C, D, E and F, there are two married couples
(ii) D is grandmother of A and mother of B
(iii) C is wife of B and mother of F
(iv) F is the granddaughter of E
Who among the following is one of the couples

QUESTION ID:20

Following given graph is from Boyle’s Law, representing graph of pressure, p vs volume v, of a gas at different temperatures. Identify the correct relationship between T1, T2 and T3.


QUESTION ID:21

Which of the following characterizes the Dauer stage larvae of C. elegans?

QUESTION ID:22

Match List I with List II

List IList II
A. ChlamydiaeI. Aquatic
B. ChloroflexiII. Heat resistant
C. DictyoglomiIII. Intracellular pathogen
D. PlanctomycetesIV. Green non-sulfur
Choose the correct answer from the options given below:

QUESTION ID:23

Given below are two statements about the success of Mendel’s inheritance experiments with true-breeding pea plant.
Statement I: He studied complex traits simultaneously with systematic statistical record.
Statement II: He studied contrasting traits simultaneously with systematic statistical record.

In the light of the above statements, choose the correct answer from the options given below

QUESTION ID:24

Which of the following is/are characteristic feature(/s) of CPSF (cleavage and polyadenylation specificity factor) in the generation of 3’ ends of mRNA?
A. Recruits poly(A)polymerase
B. Modifies the 5’ end of a nascent mRNA by adding 7-methyl guanosine cap
C. Is an endonuclease
D. Is an exonuclease

Choose the correct answer from the options given bellow:

QUESTION ID:25

Which of the following soil formation process prevails in tropical climate?

QUESTION ID:26

A potent neurotoxin responsible for the death of hundreds of marine birds and sea lions is _________.

QUESTION ID:27

Given below are two statements related to the neutral theory of molecular evolution:
Statement I: Most newly acquired mutations are neutral.
Statement II: Genetic drift acts on dominant alleles and leads to evolution.

In the light the above statements, choose the correct answer from the options given below:

QUESTION ID:28

Which of the following model represents logistic population growth curve?

QUESTION ID:29

Reverse transcriptase activity is associated with the following natural ribozyme to complete homing:

QUESTION ID:30

The correct taxonomic ranking is:

QUESTION ID:31

Which of the following statement is correct for a cell undergoing cell cycle exit in mitosis?

QUESTION ID:32

ABC transporters are involved in
A. Flipping phospholipids from one membrane leaflet to other
B. ATP production
C. Transport of cholesterol
D. Transport of Cl⁻ ions
Choose the correct answer from the options given below:

QUESTION ID:33

Which of the following represents the ratio between experimentally observed results and theoretically expected results?

QUESTION ID:34

The standard free energy change for the reaction:
Glucose + Pi → Glucose-6-phosphate ΔG = 15 kJ/mol

And the standard free energy change for the reaction:
ATP → ADP + Pi ΔG = –30.5 kJ/mol

What is the free energy change for the following reaction?
Glucose + ATP → Glucose-6-phosphate + ADP

QUESTION ID:35

Which of the following statement is INCORRECT?

QUESTION ID:36

Which of the following statement is INCORRECT according to Charles Darwin’s theory of Natural Selection?

QUESTION ID:37

Human heart develops from:

QUESTION ID:38

Which cells produce the largest amount of Heparin in humans?

QUESTION ID:39

The “forever chemicals” used in nonstick cookware are:

QUESTION ID:40

Two genes A and B on the same chromosome known to be 20 cM apart implies:

QUESTION ID:41

In B-cell development, the heavy chain locus is always rearranged first. The rearrangement starts with D-J locus followed by V-D-J arrangements. The enzyme involved in the process is:

QUESTION ID:42

Match List I with List II

List IList II
A. Excision repairI. UmuCD
B. Translesion repairII. UVR genes
C. Mismatch repairIII. Rec genes
D. Recombination repairIV. Mut genes
Choose the correct answer from the options given below:

QUESTION ID:43

Methylene blue and crystal violet are examples of:

QUESTION ID:44

The specific activity of 1 μg of a pure enzyme catalyzing a reaction at a rate of 0.5 mmol/min under optimum conditions is: (DROP)

QUESTION ID:45

Which one of the following statement is INCORRECT according to the Hardy-Weinberg law?

QUESTION ID:46

Match List I with List II


List IList II
A.
Endospore

I.
Carbolfuchsin

B.
Flagella

II.
India ink

C.
Capsule

III.
DAPI

D.
DNA

IV.
Malachite green

Choose the correct answer from the options given below:

QUESTION ID:47

Arrange the following events in chronological order:
A. Splicing of RNA molecule
B. Migration of RNA molecule to cytoplasm
C. Guanyl capping of RNA molecule
D. Degradation of mRNA molecule   

Which of the following is correct?

QUESTION ID:48

Escherichia coli cells are growing in a tryptophan-limiting condition. Which is correct about leader region of the trp operon?

QUESTION ID:49

Which of the following represents a model for floral organ identity?

QUESTION ID:50

Catechol-O-Methyltransferase (COMT) is not involved in breakdown of which of the following neurotransmitters?

QUESTION ID:51

Which of the following is an inducible promoter for plant genetic transformation?

QUESTION ID:52

Which of the following statement is correct with respect to cleavage of the given peptide?   

Cys – Ser – Pro – Lys – Gly – Met

QUESTION ID:53

The frequency of affected individuals for a disease caused by a recessive mutation, in an isolated population is, 1/1100. Assuming Hardy Weinberg equilibrium, what is the frequency of individuals who are carrier of this disease in the same population?

QUESTION ID:54

The layer of the shoot apical meristem that gives rise to the vascular bundles during leaf development in dicots is _________.

QUESTION ID:55

The characteristics of the development of suspensor of plant embryo are:
A. It develops from the upper cell resulting from the first cell division of the embryo.
B. It connects the embryo to the embryo sac and the ovule tissue.
C. It forms part of the root meristem, root initial cells, and root cap.
D. It is short lived.   

Choose the correct answer from the options given below:

QUESTION ID:56

Given below are two statements:

Statement I: β-oxidation of fatty acids generates NADPH.

Statement II: Pentose phosphate pathway generates ATP.

In the light of the above statements, choose the correct answer from the options given below:

QUESTION ID:57

Rh blood group system is used in clinical practice to detect the risk of ___________ in new born.

QUESTION ID:58

Which one of the following is an INCORRECT statement related to eutrophication?

QUESTION ID:59

A specimen selected by a competent worker from the original materials studied by the author of the species when no holotype was designated or holotype is destroyed / lost is known as:

QUESTION ID:60

Which of the following statement is correct?

QUESTION ID:61

In the case of ecological pyramids:
A.  Pyramid of energy is always upright
B.  Pyramids of biomass and number may be inverted
C.  Pyramid of biomass is always inverted
D.  Pyramid of number is always upright
Choose the correct answer from the options given below:

QUESTION ID:62

The region of hippocampus in the adult brain where new neurons are formed is__________

QUESTION ID:63

In an E. coli cell, the fractions of various macromolecules are:

QUESTION ID:64

Which RNA virus causes cancer in humans?

QUESTION ID:65

Which of the following best describes why some Iguana lizards shifted to marine life on the Galapagos islands?

QUESTION ID:66

Which of the following is correct about the synthesis of carbohydrates in plants?

QUESTION ID:67

Uptake of Na+ and Ca2+ ions into plant vacuoles from the cytosol are carried out by:

QUESTION ID:68

Diagnostic test is usually conducted in pregnant women to detect the presence of which of the following parasite, with part of its life cycle in cats, and may cause congenital infections in utero?

QUESTION ID:69

The probability of a hemophilic carrier mother married to non-hemophilic healthy male to bear a hemophilic daughter and a hemophilic son is:

QUESTION ID:70

A mutation in a gene wherein a mutant allele encoding for a protein impedes the functioning of the protein encoded by the wild type allele is frequently referred as:

QUESTION ID:71

The family of prokaryotes that possess remarkable metabolic flexibility and can use variety of metal electron acceptors such as uranium, neptunium, selenium, tellurite, and vanadate etc. are:

QUESTION ID:72

Which of the following combination do not represent the functional attributes of a grassland ecosystem?

QUESTION ID:73

Which of the following rate equation is correct when malonate is added to a stereospecific dehydrogenation of succinate to fumarate catalyzed by succinate dehydrogenase?

QUESTION ID:74

Which of the following Cas enzymes can be used to target specific genomic loci without creating nick or break?

QUESTION ID:75

Which of the following nitrogen fixing legumes is NOT an amide exporter?

QUESTION ID:76

The cellulose microfibrils are synthesized by the enzyme cellulose synthase in which part of the plant cell?

QUESTION ID:77

In relation to atmospheric gas composition and global warming:
A.  The atmosphere contains about 380 ppm CO2 by volume.
B.  The concentration of CH4 is about 1000 times less than that of CO2 in the atmosphere but at least 20 times as potent at retaining heat.
C.  Ozone is more potent at retaining heat and is more in concentration compared to CO2.
D.  Nitrogen oxides are more potent and persistent, and are in equal concentration compared to CO₂.
Choose the correct answer from the options given below:

QUESTION ID:78

Which would be the fractional saturation of Myoglobin when the partial pressure of O2 is 30 torr?

QUESTION ID:79

Tetramethyl silane (TMS) is used as an internal standard in proton NMR studies because:
A.  None of the protons in this compound are identical
B.  TMS is insoluble in most organic liquids
C.  TMS gives a single peak
D.  TMS is inert
Choose the correct answer from the options given below:

QUESTION ID:80

Identify the type of ecological succession based on gross production (P) and community respiration (R) relationship when P>R.

QUESTION ID:81

Given below are two statements:
Statement I: Vapour Pressure Deficit (VPD) is the difference between the partial pressure of water vapour at saturation and the actual vapour pressure.
Statement II: VPD is a measure of moisture relation because evaporation tend to be proportional to VPD rather than to relative humidity.
In the light of the above statements, choose the correct answer from the options given below:

QUESTION ID:82

The fluidity of plasma membrane can be increased by introduction of:

QUESTION ID:83

Which of the following event is NOT associated with jaundice?

QUESTION ID:84

BRCA1 loss of function mutations are associated with ovarian and breast cancer. The best-known mechanism to cause transformation of cells due to loss of BRCA1 is:

QUESTION ID:85

Which of the following is NOT a precursor for the biosynthesis of IAA?

QUESTION ID:86

Given below are two statements:   

Statement I: In metazoans, cyclin D in G1 phase binds to CDK4 and CDK6, but do not show a strong stage-dependent fluctuation.   

Statement II: Cyclin E in metazoans is a S/G2 cyclin, which binds to CDK2 to trigger S/G2 transition.   

In the light of the above statements, choose the correct answer from the options given below: 

QUESTION ID:87

The activity of which enzyme of C3 pathway will be maximally inhibited when a plant is suddenly brought to dark from light?

QUESTION ID:88

Rhodopsin, the photosensitive GPCR in rod cells comprises the protein linked to 11-cis retina. The presence of light induces:

QUESTION ID:89

Which of the following is not a targeted therapy routinely used to treat cancer patients?

QUESTION ID:90

Match List I with List II


List IList II
A.
Prolactin

I.
Posterior pituitary

B.
Insulin

II.
Hypothalamus

C.
Oxytocin

III.
Anterior pituitary

D.
Dopamine

IV.
Pancreas

Choose the correct answer from the options given below:

QUESTION ID:91

Which of the following best describes how cDNA library is synthesized from human liver tissue?

QUESTION ID:92

The rate of synonymous site substitutions in a particular gene was higher than the rate of non-synonymous substitutions. Which of the following statement best describes the mode of evolution operating on this gene?

QUESTION ID:93

Which of the following statement is INCORRECT about classical MHC genes?

QUESTION ID:94

As per Woese's three-domain classification, which of the following cannot be used to differentiate between Eubacteria, Archaea and Eukaryota?

QUESTION ID:95

Two populations get geographically separated but during the initial stage of speciation they remain connected through gene flow. Which of the following best describes this mode of speciation?

QUESTION ID:96

Which of the following statement is correct for F₁-component of ATP synthase?

QUESTION ID:97

Which of the following diagnostic techniques(/s) use radiofrequency? (DROP)
A. Magnetic Resonance Imaging
B. X-Ray
C. Positron Emission Tomography
D. Ultrasound   
Choose the most appropriate answer from the options given below:  

QUESTION ID:98

Which mass spectrometer should be used for performing MS/MS/MS and MSⁿ experiments?

QUESTION ID:99

UDP Glucoronyl tranferase is involved in which of the following function?

QUESTION ID:100

Which of the following type of structural proteins in plant cell walls are implicated in the growth, nutrition, and guidance of pollen tubes through stylar tissues?

QUESTION ID:101

Cancer cells de-emphasize oxidative phosphorylation even when oxygen is plentiful, taking up glucose in large quantity. This phenomenon is explained by:

QUESTION ID:102

Standard reduction potential of the half reactions of NADH oxidation by O₂ are the following:   (DROP)
NAD+ + 2H+ + 2e- ⇌ NADH  εo' = -0.315V      and
1/2 O2 + 2H+ + 2e- ⇌ H2O  εo' = -0.815V
E∘′script cap E raised to the exponent composed with prime end-exponent
What would be the standard free energy change (ΔGo′) for overall reaction?
1/2 O2 + NADH + H+ ⇌ H2O + NAD+ (1 Faraday = 96485 = J.V-1 mol-1

QUESTION ID:103

Given below are two statements:
Statement I: Catabolite repressor protein (CRP) regulates both arabinose and lactose operons.
Statement II: Both ara and lac operon will be switched on when E. coli are grown in a medium containing arabinose and lactose.   
In the light of the above statements, choose the correct answer from the options given below:   

QUESTION ID:104

Which of the following parameter best assesses the efficacy of a conjugate vaccine against SARS-CoV-2?

QUESTION ID:105

Which of the following is INCORRECT regarding the mRNA decay in eukaryotes?

QUESTION ID:106

A female mouse, homozygous for 'a' allele of the Igf2 gene, is crossed to a male which is homozygous for 'b' allele of this gene. Which of the following statement best describes the most appropriate outcome regarding the expression of Igf2 in the F1 progeny?

QUESTION ID:107

Which of the following conditions must be used to separate two proteins with following characteristics?   
Protein       Molecular weight (in kDa)       pI
A                       115                                       5.1
B                       115                                       7.0

QUESTION ID:108

Treatment of IgG with enzymes / chemicals gives rise to different products I and II. Find ‘a’ and ‘b’ in the schematic given below that yields the indicated products.


QUESTION ID:109

The following statements are related to the regulation of the enzyme nitrate reductase.
A. Light, carbohydrate levels, and other environmental factors activate the enzymes by dephosphorylation.
B. Light, carbohydrate levels, and other environmental factors inactivate the enzymes by dephosphorylation.
C. Darkness and Mg2+ inactivate the enzyme by phosphorylation.
D. Darkness and Mg2+ activate the enzyme by dephosphorylation.   
Choose the correct answer from the options given below: 

QUESTION ID:110

Which of the following is a free-living anaerobic nitrogen fixer?

QUESTION ID:111

Fresh LB medium was inoculated with 4000 bacterial cells. After 12 hours, the cell numbers reached to 256000. Considering that the bacteria exponentially multiply by binary fission, the generation time of bacteria is:

QUESTION ID:112

Match List I with List II

List IList II
A.
Glycine

I.
Imidazole side chain

B.
Threonine

II.
Sulfhydryl side chain

C.
Cysteine

III.
Uncharged polar side chain

D.
Histidine

IV.
Non polar side chain

Choose the correct answer from the options given below:

QUESTION ID:113

Match the labels (a-f) with the different components of a bacterial promoter as given below:


QUESTION ID:114

Which of the following statement about vitamin D3 in INCORRECT?

QUESTION ID:115

Match List I with List II

List IList II
A.
Facilitation model

I.
Species traits are more important than the prevailing environment

B.
Initial floristic model

II.
One group of species may secrete allelochemicals to prevent others to come

C.
Tolerance model

III.
A species creates favourable environment for the next to come

D.
Inhibition model

IV.
Proposed by Connell and Slatyer

Choose the correct answer from the options given below:

QUESTION ID:116

"Nitrogen Narcosis", also called as "raptures of the depth", can occur during deep sea diving due to compressed nitrogen. The mechanism behind this is:

QUESTION ID:117

Shown below is a diagram of a biosensor:

Which of the following strategies would result in a better biosensor?

QUESTION ID:118

Which of the following statement is correct for histidine biosynthesis in eukaryotes?

QUESTION ID:119

Given below are two statements:
Statement I: To analyze rolling circle replication, Southern blotting is performed under non-denaturing conditions.
Statement II: UV crosslinking primarily involves pyrimidine nucleotides.

In the light of the above statements, choose the correct answer from the options given below:

QUESTION ID:120

The Shannon-Weiner diversity index (H') for four different forest types are 4.78, 2.71, 2.96, and 3.62. Arrange the Simpson's concentration of dominance (CD) values of 0.04, 0.72, 0.68, and 0.06 as per the H' values.

QUESTION ID:121

Given below are two statements:
Statement I: The lambda repressor cI acts at the OL and OR operators to block immediate early genes.
Statement II: Cro binds to the same operator as the lambda repressor but with different affinities to establish lysogeny.   
In the light of the above statements, choose the correct answer from the options given below:  

QUESTION ID:122

Which type of hypersensitivity is elicited in individuals injected intradermally with a filtrate derived from a mycobacterial culture?

QUESTION ID:123

Local anaesthetics like Procaine and Tetracaine act by:
A. Blocking the sodium channels
B. Exciting the sodium channels
C. Reducing membrane excitability
D. Increasing the membrane threshold   
Choose the most appropriate answer from the options given below: 

QUESTION ID:124

The contributing genome in fertile allopolyploid species may be quantitatively different under which of the following condition?

QUESTION ID:125

Flower color and pollen grain shapes are linked in sweet peas. Purple (F) is dominant to red (f) flower color and long pollen grains (L) are dominant to round pollen grains (l). If the parental genotype is FL/fl, what would be the recombinant genotype in the gametes?

QUESTION ID:126

Analyze the sequence below:
ATG AAG TCA AAT CGA   

A change in the underlined C to G would result in:

QUESTION ID:127

If X ray treatment with 1000 roentgens (R) increases the mutation rate of a gene by 2%, what approximate percent increase in mutation rate of the gene would be expected if the organism is treated with X ray doses of 500 R in three independent rounds of treatment or 1500 R in a single treatment?

QUESTION ID:128

Which of the following transcription factor is involved in the functioning of phytochrome receptors in plants?

QUESTION ID:129

SOCS-2 is a negative regulator of cytokine signaling. socs-2 knockout mice were phenotypically larger in size as compared to the wild type. Their lifespan was not affected. This defect is, therefore, due to:

QUESTION ID:130

Given below are two statements:

Statement I: Ca2+ activates pyruvate dehydrogenase kinase.

Statement II: Pyruvate dehydrogenase activity is unaffected by cAMP.

In the light of the above statements, choose the correct answer from the options given below:

QUESTION ID:131

You are required to make 50 ml TE buffer (pH 8) containing 50 mM Tris-chloride (Tris-Cl) and 10 mM EDTA. You are given a stock solution of 2 M Tris-chloride and 0.5 M EDTA, calculate the volume required from the stock in each case for making TE buffer.

QUESTION ID:132

Which of the following statement regarding translation in bacteria is correct?

QUESTION ID:133

A typical NGS-based exome sequence experiment aims to achieve 100X coverage for a eukaryotic genome of 50 Mb. What is the minimum amount of sequence data needed to achieve this goal?

QUESTION ID:134

A researcher ligated a DNA sequence with adaptors and phosphorylated the ends using T4 DNA polynucleotide kinase, as shown:


Which of the following is the correct product?


QUESTION ID:135

A protein with four identical subunits shows:

QUESTION ID:136

Match List I with List II

List I (Secondary metabolites)List II (Terpene type)
A. Pyrethroids

I. Triterpenes

B. Limonoids

II. Diterpenes

C. Gibberellins

III. Monoterpenes

D. Carotenoids

IV. Tetraterpenes

Choose the correct answer from the options given below:

QUESTION ID:137

Which of the following statement is correct regarding heterodimeric transcription factor NF-κB in resting cells?

QUESTION ID:138

An E.coli seqA- strain was constructed by an investigator. To make the E.coli seqA- lacZ+ strain, the lacZ gene can be transferred by:

QUESTION ID:139

Aspartate transcarbamoylase catalyzes the reaction between carbamoyl phosphate and aspartate to form N-carbamoyl aspartate. Following plot represents the rate of reaction vs increasing concentration of aspartate. ATP and CTP are the allosteric effectors of the enzyme. Identify the curves which are obtained in the presence of ATP or CTP.


QUESTION ID:140

The protein yields of five bacterial cultures are 3, 5, 2, 4 and 1 mg/ml, respectively. The standard error of the mean in the ungrouped data is:

QUESTION ID:141

An enzyme has KM of 16 µM in the absence of a competitive inhibitor and KMapp of 24 µM in the presence of 6 µM of the inhibitor. Calculate KI.

QUESTION ID:142

The half-life of a radionucleotide with a decay constant of 2 x 10-2 min-1 is:

QUESTION ID:143

How will the photosynthesis be affected, if the atmospheric CO₂ concentration is doubled and temperature remains the same?

QUESTION ID:144

Regular chewing of bubble gum containing sucrose results in tooth decay because

QUESTION ID:145

The common herbicide, paraquat, kills plants by disrupting: