DCOA Mixed Practice Test #641

Question 1

Swapna Suresh:‌​‍

Accepted Answer

2020 gold case — Accused in 2020 gold case.‌​‍

Answer

Actor

Answer

Politician

Answer

Businesswoman

Question 2

A genetic disorder caused by a mutation in the CFTR gene results in abnormal chloride ion transport across cell membranes. Which of the following inheritance patterns is most likely responsible for this disorder?

Accepted Answer

B. Autosomal recessive — Cystic fibrosis, caused by a mutation in the CFTR gene, follows an autosomal recessive inheritance pattern. This means an individual must inherit two copies of the mutated gene (one from each parent) to develop the disorder. Autosomal dominant disorders require only one copy of the mutated gene, while X-linked and Y-linked traits involve sex chromosomes.

Answer

A. Autosomal dominant

Answer

C. X-linked dominant

Answer

D. Y-linked

Question 3

Koodiyattam, recognised by UNESCO, is a form of:‌​‍

Accepted Answer

Sanskrit theatre — Koodiyattam is a traditional form of Sanskrit theatre from Kerala, declared by UNESCO as an Intangible Cultural Heritage.‌​‍

Answer

Puppetry

Answer

Martial art

Answer

Tribal dance

Question 4

Thommankuthu Falls:‌​‍

Accepted Answer

Idukki — Seven-step falls Idukki.‌​‍

Answer

Pathanamthitta

Answer

Kottayam

Answer

Ernakulam

Question 5

The presence of which functional group in a drug molecule typically increases its water solubility?

Accepted Answer

A. Hydroxyl group (-OH) — The hydroxyl group (-OH) increases water solubility by forming hydrogen bonds with water molecules. Methyl groups are hydrophobic, while halogen and nitro groups generally do not enhance water solubility to the same extent.

Answer

B. Methyl group (-CH3)

Answer

C. Halogen group (-Cl, -Br)

Answer

D. Nitro group (-NO2)

Question 6

Ayyankali founded:‌​‍

Accepted Answer

Sadhu Jana Paripalana Sangham — 1907.‌​‍

Answer

SNDP

Answer

NSS

Answer

Arya Samaj

Question 7

A primary school teacher wants to teach students about different types of fruits and vegetables, emphasizing their colors, shapes, and textures. Which of the following teaching aids would be most appropriate for this lesson?

Accepted Answer

C. Real fruits and vegetables or realistic models. — Real fruits and vegetables (or realistic models) provide a multi-sensory learning experience, allowing students to see, touch, and even smell the items. This direct interaction is crucial for understanding colors, shapes, and textures effectively in primary grades, offering a richer experience than purely visual aids like flashcards or digital images.

Answer

A. Flashcards with pictures of fruits and vegetables.

Answer

B. A projector displaying images from a digital library.

Answer

D. An educational video showcasing a farm and harvesting process.

Question 8

Nitish Kumar alliance 2024:‌​‍

Accepted Answer

JD-U in NDA — JD(U) part of NDA.‌​‍

Answer

Left

Answer

Alone

Answer

With Cong

Question 9

The term 'Tsunami' is derived from which language?‌​‍

Accepted Answer

Japanese — Tsunami is a Japanese word meaning 'harbour wave' (tsu = harbour, nami = wave).‌​‍

Answer

Latin

Answer

Greek

Answer

Sanskrit

Question 10

A couple approaches a genetic counselor concerned about the risk of their future child inheriting a rare autosomal recessive disorder. The father's genetic testing reveals he is a carrier (heterozygous) for the disorder, while the mother's test shows she is not a carrier (homozygous dominant). Based on Mendelian inheritance principles, what is the probability that their child will be a carrier for this specific recessive disorder?

Accepted Answer

C. 50% — The father has a genotype of Aa (carrier) and the mother has AA (non-carrier). A Punnett square analysis shows that 50% of their offspring will inherit an 'A' allele from the mother and an 'a' allele from the father, resulting in a heterozygous (Aa) genotype, making them carriers. The other 50% will be AA (non-carriers), and there is no chance for the child to inherit the disorder (aa) as the mother does not carry the recessive allele.

Answer

A. 0%

Answer

B. 25%

Answer

D. 75%

DCOA Mixed Practice Test #641