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On an expedition to Mars, the newest rovers discover microbial life. Yay! On further probing, scientists discover that Martian microbes also use DNA, RNA, and proteins. Researchers changed one nucleotide […]

An altered form of a replicative DNA polymerase lacks 3’→ 5’ exonuclease activity. This alteration would most likely result in which of the following? A decrease in processivity An increased […]

Which of the following phyla are considered diploblastic (i.e. consisting of two germ layers)? Echinodermata Chordata Mollusca Cnidaria Among the given options, only Cnidaria is diploblastic; Echinodermata, Chordata and Mollusca […]

Mature vertebrate erythrocytes always: Lack a nucleus Have a bi-concave shape Use haemoglobin to carry oxygen All of the above Correct option: The statement is not true for “mature vertebrate […]

While culturing a eukaryotic cell line, you add radio-labelled methionine in the culture media. After addition, you are able to cleanly separate individual organelles at different times. In which organelle […]

The nervous systems of invertebrates differ from the nervous systems of vertebrates in the following way: Invertebrate neurons lack a myelin sheath around their axons. Invertebrate neurons do not generate […]

A mitochondrial mutation is detected in a man. This mutation is only lethal beyond the age of 70. He marries a woman who does not carry the mutation, and they […]

If a person has memory loss which part of the brain is most likely affected? Amygdala Spinal cord Neocortex Hippocampus The correct answer is: Hippocampus. Among the given options, damage to […]

Which of the following molecules is a tautomer of the structure shown? The correct answer is Option D. The structure in option D is the proper tautomer of the given pyrimidine ring because […]

A series of alkanes is shown below. Which one has the lowest melting point 2 3 1 4 The cyclic alkane with the lowest melting point among the given options […]