Characteristic of Life Unit Exam

The table below provides some information concerning organelles and organ.

Based on this information, which statement accurately compares organelles to organs?

• Functions are carried out more efficiently by organs than by organelles

• Organ maintain homeostasis homeostasis which organelles do not

• Organelles carry out functions similar to those of organs

• Organelles function in multicellular organisms while organs function in single-celled organisms

Tags

NGSS.MS-LS1-3

To observe the internal structure of mitochondria in a cell, a biologist would use

• a dissecting microscope

• a compound light microscope

• an ultracentrifuge

• an electron microscope

Which structures are listed in order from least complex to most complex?

• plant cell, leaf, chloroplast, rose bush

• chloroplast, plant cell, leaf, rose bush

• chloroplast, leaf, plant cell, rose bush

• rose bush, lead, plant cell, chloroplast

According to the heterotroph hypothesis, the earliest aggregates of complex molecules were considered to have been alive when they developed the ability to

• reproduce

• photosynthesize

• form structures for aerobic respiration

• form "how, thin soup"

Which statement describes an exception to the cell theory?

• cells arise from previously existing cells

• the cell is the basic unit of function in animals

• viruses are not composed of cells

• the cell is the basic unit of structure in plants

Which factor contributed most to the development of the cell theory?

• the discovery of many new species during the last century

• the development of advanced techniques to determine the chemical compositions of substances

• the increase in knowledge concerning factors influencing the rate of evolution

• the improvement in microscopes and microscopic techniques during the last two centuries

Viruses are exceptions to the cell theory, but they have some characteristics of living things. What is one of the characteristics?

• they are made of many specialized cells

• they contain genetic material

• they reproduce by mitosis

• they contain chlorophyll

Vegetable oils, such as corn oil, belong to which class of organic substances?

• Lipids

• Proteins

• Carbohydrates

• Salts

Which statement best describes the plasma membrane of a living plant cell?

• It selectively regulates the passage of substances into and out of the cell.

• It is composed of proteins and carbohydrates only

• It has the same permeability to all substances found inside or outside the cell

• It is a double protein layer with floating lipid molecules

Tags

NGSS.MS-LS1-2

Plants store carbohydrates in the forms of

• amino acids

• fatty acids

• starch

• nucleic acids