NC Biology

Which best explains why the rate of a biochemical reaction decreases at high temperatures?

• The activation energy increases.

• The shape of the enzyme changes.

• The enzyme-substrate complex forms.

• The bonds between substrates are broken.

Tags

NGSS.HS-PS1-5

Which of these cells in the human body is specialized to transport oxygen throughout the body?

• 
• 
• 
• 

What would most likely be produced when a cell with eight chromosomes undergoes mitosis?

• two cells with four chromosomes each

• two cells eight chromosomes each

• four cells with four chromosomes each

• four cells with eight chromosomes each

Tags

NGSS.HS-LS1-4

Identical twin girls are separated at birth and cared for by two different families. After twenty years, the twins have different heights and weights. What is most likely the cause of these differences?

• One twin had a genetic condition that prevented her from growing tall.

• The DNA of one twin was different from the DNA of the other twin.

• Each twin was provided a different diet and physical activities.

• The proteins made by one twin were different that the proteins made by the other twin.

Tags

NGSS.HS-LS3-2

In DNA replication, the DNA is first unzipped and then new nitrogenous bases are added to each of the original strands. This is called a _______ because half of the original DNA is preserved in each new strand.

• Semi-conservative process

• Dispersive process

• Conservative process

Like RNA, DNA is a type of:

• Carbohydrate

• Lipid

• Protein

• Nucleic Acid

The subunit of nucleic acids like DNA and RNA are called:

• Monosaccharides

• Sugars

• Amino acids

• Nucleotides

The subunits of nucleic acids, such as DNA, are nucleotides. What are the 3 parts of a nucleotide?

• Phosphate group

• Sugar group

• Hydrogen group

• Nitrogenous Base

What does DNA stand for?

• Double-helix Nucleic Acid

• Deoxyribonucleic Acid

• Dehydrogenic Acid

• Denitrogenous Acid

DNA has nitrogenous bases that come in pairs. What is this called?

• Complementary Base Pairing

• Convergent Pairing

• Nondisjunction

• DNA Replication