AllinL Quiz

Based on this information, actin is most likely —

• an enzyme protein

• a structural protein

• a messenger protein

• a transport protein

Which statement accurately compares eukaryotic cells and prokaryotic cells?

• Eukaryotic cells are more complex than prokaryotic cells.

• Eukaryotic cells replicate faster than prokaryotic cells.

• Only prokaryotic cells have membrane-bound organelles.

• Only prokaryotic cells lack outer membranes and cell walls.

In animal cells, the sodium-potassium pump moves sodium and potassium ions against a concentration gradient across the cell membrane. What type of transport is used, AND why is this type of transport necessary?

• Passive transport, because it does not require energy.

• Facilitated diffusion, because it uses proteins to help molecules move down their concentration gradient.

• Active transport, because it requires energy to move ions against their concentration gradient.

• Simple diffusion, because ions move freely across the membrane.

Moving which of these substances across the cell membrane requires energy from ATP?

• 2 only

• 3 only

• 1 and 2

• 1 and 3

Where is the genetic code primarily located?

• Ribose sugars in RNA

• Phosphates in DNA

• Nucleotides in DNA

• Exons in RNA

Identify the components of DNA in the diagram.

• Box 1: Nucleotide, Box 2: Deoxyribose sugar, Box 3: Nitrogenous Base

• Box 1: Base Pair, Box 2: Nucleotide, Box 3: Phosphate

• Box 1: Nitrogenous Base, Box 2: Base Pair, Box 3: Deoxyribose sugar

• Box 1: Deoxyribose sugar, Box 2: Nitrogenous Base, Box 3: Ribose sugar

Tags

NGSS.HS-LS1-1

What is the amino acid sequence that will be translated from the mRNA sequence?

UGC-UAC-AGA-ACC

• Threonine - Isoleucine - Serine - Tryptophan

• Cysteine - Tyrosine - Arginine - Threonine

• Serine - Methionine - Tyrosine - Tryptophan

• Proline - Arginine - Histidine - Arginine

Tags

NGSS.HS-LS1-1

Scientists can use the fossil record to determine changes in an environment. What does the abrupt appearance of new organisms show?

• stasis

• transitional fossils

• gradualism

• an unstable environment

Tags

NGSS.MS-LS4-1

Which of the following is an example of gradualism in evolution?

• The sudden appearance of a new species in the fossil record

• A slow accumulation of small genetic changes over time

• A period of evolutionary stasis

• An extinction event

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

NGSS.HS-LS4-4

a DNA mutation results that is the same protein synthesised what is the best explanation:

• One amioacid substitution doesn't affect the protein

• Different codons can be translated, so some mutations do not affect protein synthesis

• only mutations that occur at the chromosomal level change protein function

• Amino acids have similar functions, so their corresponding proteins are unaffected by mutations

Tags

NGSS.HS-LS3-2