chemistry and biology end of year exam grade 8

what is found in the nucleus of every cell

• Bacteria

• viruses

• cytoplasm

• chromosomes

Tags

NGSS.MS-LS1-2

when potassium reacts with oxygen

• potassium hydroxide

• potassium iodide

• potassium oxide

zinc is ....... reactive than iron

• more

• less

• equal

The formula of dinitrogen is

• NO2

• O2N

• N20

• 1N0

Tags

NGSS.MS-PS1-1

which pair of chromosomes female have

• xx

• xy

• xb

• non of the above

Tags

NGSS.HS-LS3-1

what was the name of the scientist who explained inheritance

• charles mendel

• Uwais panwala

• gregor mendel

• sherif negm

define the term variation

• similarities within species

• differences within species

• non of the above

Tags

NGSS.MS-LS3-2

NGSS.MS-LS4-4

why would identical twins look different

• different clothes

• different parents

• different environment

• different siblings

Tags

NGSS.MS-LS1-5

If a father had Bb and had brown eyes and the mother had Bb and also had brown eyes. What is possibility that their baby will have blue eyes?

• 0 percent

• 75 percent

• 50 percent

• 25 percent

• 20 percent

The reaction of metals with oxygen produces ----------------

• metal ore

• metal oxide

• pure metal