Practice Questions

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#Question id: 5729

One chromosome in a plant has the sequence A B C D E F, and another has the sequence M N O P Q R. A reciprocal translocation between these chromosomes produced the following arrangement: A B C P Q R on one chromosome and M N O D E F on the other. If an individual is heterozygous for this translocation, the consequence in meiosis will be as follows:

A. The two normal chromosomes and-two translocated chromosomes pair separately

B. Half of gametes produced from this meiosis are non-viable as they have deletions and duplications

C. In one of the cross configurations called "horizontal segregation" all gametes having normal or translocated chromosomes will not survive

D. The gametes having normal chromosomes only survive while all gametes having translocated chromosomes are non-viable, hence the translocations are used as crossover suppressors

Which of the following combinations best describes the meiotic consequences for the translocation described above?

#Unit 8. Inheritance Biology

A and B
B and C
B and D
Only B

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#Question id: 28922

#Unit 4. Cell Communication and Cell Signaling

Hedgehog binding receptor is called___

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#Question id: 28856

#Unit 2. Cellular Organization

The main families of motor proteins mediate transport along microtubules Kinesin-1 which is similar to myosin II that contain various domains such as

II) Stalk domain

III) Tail domain

a) forms a long coiled-coil

b) at the C-terminus that attaches to cargo

c) at the N-terminus of the heavy chain

d) at the C-terminus of the heavy chain

Correctly match the following domains with given characters;

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#Question id: 2237

#Unit 2. Cellular Organization

Glucose enters erythrocytes via a GLUT-1 uniporter. As the levels of glucose in the bloodstream decrease between meals, what happens to the glucose in the cells?

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#Question id: 10984

#Unit 7. System Physiology – Animal

Which of the following are caused by acetylcholine?

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#Question id: 24638

#Unit 2. Cellular Organization

The type I topoisomerase reaction The ends are ligated by a second nucleophilic attack which can be inhibited by