Life Science (2.17)

If both parents are heterozygous for a Mendelian trait, what is the percent probability that an offspring is homozygous recessive for that trait?

• W) Zero

• X) 25

• Y) 50

• Z) 100

Stromatolites have been used to study the age of which of the following?

• W) Earliest life forms

• X) Oceans

• Y) The Earth

• Z) The Solar System

A blood cell is placed into a salt solution and is observed to shrink. What type of solution was the blood cell placed in?

• W) Hypertonic

• X) Isotonic

• Y) Hypotonic

• Z) Osmotic

In what state will a plant cell be if placed in a hypotonic environment?

• W) Lysis

• X) Plasmolysis

• Y) Turgor

• Z) Shrinking

In what cellular organelle does photosynthesis occur?

A plant cell containing 0.1 molar sucrose and 0.2 molar glucose is placed in a 0.3 molar solution of sucrose. What type of solution is this?

• W) Super saturated

• X) Isotonic

• Y) Hypotonic

• Z) Hypertonic

Which of the following is the target of alkylating agents, such as mustard gas?

• W) DNA

• X) Proteins

• Y) Carbohydrates

• Z) Fatty acids

Lecithin is an example of which of the following?

• W) Carbohydrate

• X) Protein

• Y) Phospholipid

• Z) Nucleic

What type of microscope did van Leeuwenhoek use when first observing cells?

• W) Light Microscope

• X) Electro Microscope

• Y) Refracting Microscope

• Z) Compound Microscope

In what structure of the human lung does gas exchange occur?

• W) CAPILLARIES

• X) TRACHEA

• Y) ALVEOLI

• Z) BRONCHIOLES