CUET · BIOLOGY · PYQ PAPER 2023
Which one of the following hormones is produced only during pregnancy?
- A hCG
- B Thyroxine
- C Cortisol
- D Estrogens
Answer & Solution
Correct Answer
(A) hCG
Step-by-step Solution
Detailed explanation
hCG
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from BIOLOGY
- Arrange the given steps for regulation of gene expression in correct sequence?
(A) Regulation of splicing
(B) Transport of mRNA from the nucleus to the cytoplasm
(C) Translation
(D) Formation of primary transcript (Transcription)
Choose the correct answer from the options given below:CUET 2025 Medium - Which one of the following statement is incorrect about ecological pyramids?CUET 2023 Medium
- Which of the following is not used to draw the ecological pyramid?CUET 2025 Hard
- Read the following passage carefully and answer the given questions.
Plasmodium, a tiny protozoan is responsible for the disease malaria. Different species of Plasmodium (P. vivax, P. malaria and P. falciparum) are responsible for different types of malaria. Of these, malignant malaria caused by Plasmodium falciparum is the most serious one and can even be fatal. Innate immunity consist of four types of barriers. These are – (i) Physical barriers- skin on our body is the main barrier which prevents entry of the micro-organisms. (ii) Physiological barriers- Acid in the stomach, saliva in the mouth, tears from eyes-all prevent microbial growth. (iii) Cellular barriers- Certain types of leukocytes (WBC) of our body like polymorpho-nuclear leukocytes (PMNL-neutrophils) and monocytes and natural killer (type of lymphocytes) in the blood as well as macrophages in tissues can phagocytose and destroy microbes. (iv) Cytokine barriers- virus-infected cells secrete proteins called interferons which protect non-infected cells from further viral infection. Allergy is due to the release of chemicals like histamine and serotonin from the mast cells. The use of drugs like anti-histamine, adrenalin and steroids quickly reduce the symptoms of allergy. Drugs like barbiturates, amphetamines, benzodiazepines, and other similar drugs, that are normally used as medicines to help patients cope with mental illnesses like depression and insomnia, are often abused.
Which one of the followings is not an example of physiological barriers?CUET 2025 Easy - The technology of biogas production was developed in India mainly due to the efforts of -CUET 2025 Medium
- Which hormone is responsible for ovulation in human females?CUET 2023 Hard
More PYQs from CUET
- Match List I with List - II.
Choose the correct answer from the options given below:List - I List - II (A) Lepidopteran (I) Beetles (B) Coleopterans (II) Meloidegyne incognitia (C) Dipterans (III) Tobacco budworm (D) Nematode (IV) Agrobacterium (V) Flies and mosquitoes CUET 2023 Medium - Read the passage carefully and answer
When a metal is placed in a solution of its ions, the metal can lose electron and can go in the solution as ion or the metal ion in the solution can take electron from the electrode and get deposited as metal. Thus, the electrode acquires either positive or negative charge with respect to the solution leading to the development of a potential difference between the metal electrode and the solution. This potential difference is called the electrode potential of the metal. The electrode potential of a metal is a measure of relative tendency to undergo oxidation (loss of electron) or reduction (gain of electron). When the concentration of the ions in the solution is unity, the electrode potential is called standard electrode potential. The magni of potential depends upon the nature of electrode, concentration of ions in solution and the temperature. In a galvanic cell, the electrode at which oxidation occurs is known as anodic half-cell and the electrode at which reduction occurs is known as cathodic half cell. The emf of the cell in terms of standard reduction potential is given by \(E_{\text {cell }}^{\circ}=E_{\text {cathode }}^{\circ}-E_{\text {anode. }}^{\circ}\).The standard free energy change of the redox reaction taking place in the cell is related to \(E_{\text {cell }}^{\circ}\) by \(\Delta G^{\circ}=-n F E^{\circ}\). A redox reaction would occur spontaneously if the free energy change is negative. The equilibrium constant of the reaction is related to the standard free energy change by \(\Delta G^{\circ}=-R T \ln K\).
The standard reduction potential of Zinc is represented by the reactionCUET 2025 Hard - The correct increasing reactivity order for SN2 reaction for the following compounds
(A) Benzyl Chloride
(B) Methyl Chloride
(C) Isopropyl Chloride
(D) Tertiary butyl Chloride
Choose the correct answer from the options given below:CUET 2025 Hard - The function \(f : R \rightarrow R\) defined by \(f(x)=\left\{\begin{array}{ll}x^2, & x \geq 1 \\ x, & x<1\end{array}\right.\) isCUET 2025 Medium
- Arrange the following compounds in increasing order of their reactivity towards HCN .




Choose the correct answer from the options given below:CUET 2025 Medium - The factors that affect the Hardy Weinberg equilibrium are:
(A) Gene flow
(B) Genetic Drift
(C) Mutation
(D) Feeding habit
Choose the correct answer from the options given below:CUET 2023 Medium