Биологийн асуултууд

Choose the correct matching representatives of the following classes related to the upper class of four-legged animals.

• 1a, 2b, 3c, 4d

• 1c, 2d, 3a, 4b

• 1d, 2c, 3b, 4a

• 1b, 2d, 3c, 4a

• 1c, 2d, 3b, 4a

Choose the characteristic that corresponds to the representatives of the insect class.

• Wings

• Respiratory organ

• Legs

• Body part

Choose the correct characteristics related to the class of cartilaginous fish.

• Has a swim bladder.

• Does not have a swim bladder.

• Gives live birth or lays eggs.

• Releases eggs covered in water.

• Has a lateral line to sense movement.

Based on the observation of the images of bacteria and viruses, choose the answer that correctly expresses the characteristics related to viruses.

• Contains either DNA or RNA with genetic information.

• Approximately 3.5 billion years old.

• First discovered in tobacco plants in 1892.

• Cell wall contains peptidoglycan.

• Has a capsid coat.

A researcher conducted a study to determine the population size of a certain fish species in a pond using the capture, mark, and recapture method. Initially, 40 fish were captured and marked, then released. During the second capture, 20 fish were caught, 10 of which were marked from the first capture. Choose the correct answer for the population size of the fish in the pond using the formula below.

• 50

• 800

• 70

• 80

• 400

Choose the structure that can only be studied with the help of an electron microscope.

What is the number of samples with a marked label?

• 50

• 800

• 70

• 80

• 400

Choose the structures that can only be studied with an electron microscope.

• 1, 2

• 1, 3

• 2, 3

• 2, 4

• 3, 4

Choose the characteristics that correspond only to animal cells.

• 1, 4, 5

• 2, 3, 6

• 1, 3, 6

• 2, 4, 5

• 2, 4, 6

Choose the correct matching of enzymes, their substrates, and products.

• I-c-2, II-b-3, III-a-1

• I-a-2, II-c-1, III-b-3

• I-a-2, II-b-3, III-c-1

• I-a-2, II-c-3, III-b-1

• I-a-3, II-c-2, III-b-1