Sindh MDCAT 2019 Paper

1- In sexual reproduction, sex cells contain number of chromosomes when compared to other cells of body.

A. Same
B. Half
C. Double
D. All of the above  

Answer : B. Half

2- Kinetochore is a complex of associated with the centromere of a chromosome to which the microtubules of spindle attach.

A. DNA
B. Carbohydrates
C. Proteins
D. Nucleosomes

Answer : C. Proteins

3- Pituitary gland releases and hormone while ovaries produce and progesterone.

A. Follicle stimulating and luteinizing, estrogen 
B. Estrogen and follicle stimulating, luteinizing  
C. Luteinizing and estrogen, follicle stimulating  
D. Follicle stimulating and estrogen, luteinizing  

Answer : A. Follicle stimulating and luteinizing, estrogen

4- In higher animal's bodies, tissue fluid is isotonic as contrary to plants because in plant's cell:

A. Cell membrane creates resistance in water uptake  
B. Plastids creates resistance in water uptake  
C. Chlorophyll creates resistance in water uptake  
D. Cell wall creates resistance in water uptake

Answer : D. Cell wall creates resistance in water uptake

5- Which one is NOT an involuntary function?

A. Breathing
B. Pumping of blood
C. Skeletal muscle movement
D. Blinking of eyes  

Answer : C. Skeletal muscle movement

6- In gametogenesis, which resultant product is non-functional?

A. Ovum
B. Spermatogonia
C. Oogonia
D. Polar body

Answer : C. Polar body

7- The passageways of the respiratory system are lined by mucous secreting cells called ______.

A. Tracheal cells  
B. Goblet cells  
C. Surfactant cells  
D. Pleural cells  

Answer : B. Goblet cells

8- Virus can only survive and reproduce inside a ______.

A. Animal cell  
B. Bacterial cell  
C. Living cell
D. Non-Living cell  

Answer : C. Living cell

9- In addition to smaller hind limb muscle mass, the mutant "mini muscle" gene exhibit lower heart rates during physical activity, larger kidneys and livers in mice. This is a very good example of ______.

A. Epistasis
B. Multiple alleles  
C. Co-dominance
D. Pleiotropy

Answer : D. Pleiotropy

10- _____ is the stage of mitosis characterized by the physical separation of chromatids.

A. Interphase , Offspring  
B. Telophase , F1 Chromatids  
C. Metaphase , Homologous 
D. Anaphase , Sister

Answer : D. Anaphase , Sister

11- A man who has type AB blood could not father a child with type ______ blood, because he would pass on either the ______ or the B allele to all of his offspring.

A. A , O
B. O , A
C. B , O
D. B , A  

Answer : B. O , A

13- A cross between a black cat and a tan cat produces a tabby pattern (black and tan fur together). What percent of kittens would have tan fur if a tabby cat is crossed with a black cat?

A. 100%
B. 50%
C. 25%
D. 0%

Answer : D. 0%

14- Which factor decides what type of variation should be flourished and passed on in to the next generations?

A. Species
B. Population
C. Survival
D. Environment

Answer : D. Environment

15- Haemophilia is a sex linked ______ trait.

A. Dominant
B. Co-dominant
C. Pleitropic
D. Recessive

Answer : D. Recessive

16- Which of the following is a type of cell division that plays an important role in evolution?

A. Meiosis
B. Mitosis
C. Apoptosis
D. Amitosis

Answer : A. Meiosis

18- There existed two varieties of Female Fresh Water Mollusks in which some were streamlined and some had high bulge. Over the generations, Male Fresh Water Mollusks learned that high bulge favors more production of offspring. So they started preferring to mate with females having high bulge as compared to streamlined. Will this effect Hardy Weinberg equilibrium in the population ?

A. No, it will not affect Hardy Weinberg equilibrium
B. Yes, it will affect Hardy Weinberg equilibrium  
C. It will help to balance equilibrium
D. Hardy Weinberg equilibrium doesn’t apply here  

Answer : B. Yes, it will affect Hardy Weinberg equilibrium

19- A ______ is mostly a non-protein chemical compound that is required for the protein's biological activity.

A. Active site  
B. Substrate
C. Cofactor
D. Enzyme

Answer : C. Cofactor

20- All of the following belong to same kingdom EXCEPT:

A. Plasmodium
B. Fern
C. Chlamydomonas
D. Euglena

Answer : B. Fern

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