Science Pass

The ___ is the basic unit of sturucture and function of organisms

• atom

• cell

• matter

• all other answers are correct

Answer explanation

The correct choice is 'cell' as it is the basic unit of structure and function of organisms.

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-1

Fully grown parent cells split into two halves resulting in two daughter cells with the exact DNA as the parent.

• Binary Fission

• Budding

• Fragmentation

• Vegetative Reproductions

Answer explanation

Fully grown parent cells splitting into two halves resulting in two daughter cells with the exact DNA as the parent is known as Binary Fission.

Tags

NGSS.MS-LS3-2

Students in Mrs. Clark's science class are investigating a substance that has the following properties

-shiny

-bends easily

-hard, not easily broken

Based on these properties how would you classify the substance?

• metal

• nonmetal

• metalloid

Answer explanation

Based on the properties of being shiny, bending easily, and hard to break, the substance can be classified as a metal.

The same student works with a new substance. He concludes it conducts electricity very well. It has a very shiny luster. When he hammers it, it simply dents and flattens. What is the most likely substance type?

• Metal

• Metalloid

• Nonmetal

What are the horizontal rows on the periodic table called?

• periods

• groups

• metals

• nonmetals

• metalloids

What does 12.011 represent?

• atomic mass

• atomic number

• element name

• chemical symbol 

Tags

NGSS.MS-PS1-1

The inner and outer planets are divided by...

• The asteroid belt

• The oort cloud

• The kuiper belt

• a fraction

To make an object move you must first apply ---

• an opposing force

• an unbalanced force

• a stationary force

• a vertical force

Answer explanation

To make an object move you must first apply an unbalanced force, as it is necessary to overcome inertia and initiate motion.

Tags

NGSS.MS-PS2-2

Oliver stepped onto a three-car subway train with standing room only. What caused him to fall backward into other riders when the train suddenly moved forward?

• He was riding in the last car of the train.

• He had heat exhaustion from the overcrowded train.

• Oliver's body resisted a change in the subway train's inertia.

• Oliver's body was responding to the force of gravity.

Answer explanation

Oliver's body resisted a change in the subway train's inertia.

Which law explains the relationship among mass, force and acceleration?

• Universal Law of Gavitation

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

Answer explanation

Newton's Second Law of Motion explains the relationship among mass, force, and acceleration by stating that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

Tags

NGSS.MS-PS2-2