Biology Formative (released test) 2009 (14,18, 21- 28 included) - Tabitha Batts Turner | Laabri

1

This chart represents characteristics of four different plants. Which plant is most likely a gymnosperm?

A Plant 1

B Plant 2

C Plant 3

D Plant 4

1

This diagram shows a food web of a meadow. Due to insecticides, the cricket population is greatly reduced. Which population is most affected by this event?

A Mouse

B Hawk

C Grass

D Frog

1

RNA and DNA are which type of organic compound?

A carbohydrate

B lipid

C nucleic acid

D protein

1

A scientist treats a cell with a chemical that destroys the ribosomes. As a result, which cell process will be stopped?

A osmosis

B photosynthesis

C protein synthesis

D respiration

1

Which is an example of osmosis?

A potassium ions moving in and out of an animal cell

B carbon dioxide moving into the leaf cells of a plant

C oxygen moving into the bloodstream from the lungs

D water moving into the root cells of a plant

1

This diagram shows an enzyme-substrate complex. Which is represented by Structure X?

A substrate

B product

C enzyme

D complex

1

Which conclusion can be made from these observations?

A Only Species Y is aerobic.

B Only Species Y is anaerobic.

C Both Species X and Y are aerobic.

D Both Species X and Y are anaerobic.

1

Hitchhiker’s thumb (H) is dominant to no hitchhiker’s thumb (h). A woman who does not have hitchhiker’s thumb marries a man who is heterozygous for hitchhiker’s thumb. What is the probable genotypic ratio of their children?

A 0% Hh : 100% hh

B 50% Hh : 50% hh

C 75% Hh : 25% hh

D 100% Hh : 0% hh

1

What advantage do sexually reproducing organisms have over asexually reproducing organisms?

A genetic variation

B genetic stability

C increased fertilization rate

D increased reproductive rate

1

This chart shows a list of messenger RNA codons. A strand of DNA with the sequence AAC AAG CCC undergoes a mutation, and the first A is changed to a C. How will this mutation affect the amino acid sequence?

A One amino acid will change.

B Two amino acids will change.

C All amino acids will change.

D The amino acids will remain the same.