First Quarter Examination in Biotechnology

Biotechnology is a branch of science that involves applying biological knowledge in various field. The following are statements that define biotechnology, EXCEPT.

• Science based on biology.

• Derived from words 'bio' means life and 'technology' means application of science.

• Chemical Engineering and Mechanical Engineering are the principles of biotechnology.

• It is the technology that involves the use of living organisms to develop products for benefit of mankind.

A scientist collects an unknown single-celled organism from a hot spring. Under a microscope, the organism is observed to have no nucleus and no membrane-bound organelles. Based on this observation, which of the following does the organism most likely belong to?

• Animal

• Bacteria

• Man

• Plant

A biologist is comparing four different organisms based on the number of cells and presence of a nucleus. One of the organisms is unicellular and lacks a nucleus. The others are multicellular with well-defined nuclei. Based on this data, which organism is most likely the unicellular prokaryote?

• Animal

• Bacteria

• Man

• Plant

Organism can be classified as prokaryote and eukaryote, and multicellular and unicellular. Which among the following statement is correct?

• Animals are prokaryotes and multicellular.

• Plants are unicellular and are prokaryotic.

• Human are multicellular and are eukaryotic.

• Bacteria are prokaryotes and multicellular organisms.

A student is studying two organisms under a microscope. One organism is small, has no visible nucleus, and appears to have a capsule. The other organism is larger, has a visible nucleus, and is part of a multicellular structure. She makes the following conclusions: Eukaryotes are always multicellular while prokaryotes are always unicellular. Eukaryotic cells have a nucleus, ribosomes, and DNA. Prokaryotes are generally smaller than eukaryotes. Some prokaryotes have capsules, a cell wall, and a plasma membrane. Which of the student's conclusions is NOT correct?

• Statement 1

• Statement 2

• Statement 3

• Statement 4

Which process is illustrated in this picture, given that the particles shown are water molecules?

• Active transport

• Endocytosis

• Exocytosis

• Osmosis

Cell transport refers to the movement of substance across the cell membrane. Which statement below best describes osmosis?

• It occurs when water moves from a fluid with a low solute concentration to a fluid with a high solute concentration.

• It occurs when solutes move from a fluid with a low solute concentration to a fluid with a high solute concentration.

• It occurs when water moves from a fluid with a high solute concentration to a fluid with a low solute concentration.

• It occurs when solutes move from a fluid with a high solute concentration to a fluid with a water solute concentration.

Cell transport refers to the movement of substance across the cell membrane. What type of solution allows water to enter the plant cell?

• Active transport

• Hypotonic solution

• Hypertonic solution

• Isotonic solution

This picture shows the molecules getting help across the membrane. The word that best describes this is ______.

• Active transport

• Diffusion

• Facilitated diffusion

• Osmosis

Jimin, a student is observing how glucose molecules move into a cell even when their concentration is already higher inside the cell than outside. He notices that the process requires the use of cellular energy (ATP). Which type of cell transport is the student most likely observing?

• Active transport

• Diffusion

• Osmosis

• Passive transport