Microbial growth and nutrition — Worksheet extraction

Which statement best describes growth factors in microbial nutrition?

• They are inorganic ions produced during respiration.

• They are organic compounds that cannot be synthesized by the organism and must be provided.

• They are amino acids synthesized from nitrogen gas by all cells.

• They are vitamins produced only during stationary phase.

Tags

NGSS.HS-LS2-3

Inorganic nitrogen must be converted to ammonia to be used by a cell.

• True

• False

Microorganisms require large quantities of blank for use in cell structure and metabolism.

• micronutrients

• macronutrients

• growth factors

• trace gases

Microorganisms require small quantities of blank for enzyme function and maintenance of protein structure.

• trace elements

• macronutrients

• water

• lipids

Obligate saprobes can adapt to a living host.

• True

• False

Tags

NGSS.MS-LS3-1

The process by which a cell uses ATP to enclose a substance in its membrane, forming a vacuole and engulfing it, is called

• osmosis

• facilitated diffusion

• endocytosis

• exocytosis

Which of the following requires the cell to use energy?

• simple diffusion

• osmosis

• endocytosis

• facilitated diffusion

Nutrient absorption is mediated by the

• cell wall

• cell membrane

• capsule

• ribosome

Facilitated diffusion is limited by

• the concentration of water only

• random motion of lipids

• carrier proteins in the membrane

• the presence of a capsule

When whole cells or large molecules in solution are engulfed by a cell, this endocytosis is specifically termed

• pinocytosis

• phagocytosis

• exocytosis

• transcytosis