Why does vesicle transport need energy?
Options:
- (A) it helps plants in growing
- (B) to prevent movement
- (C) for movement of substances
- (D) during the day
- (E) Transfers energy
- (F) flow of electrons
- (G) to breath
- (H) magnetism
--
Let's think first: Vesicle transport requires energy, so it is also a form of active transport. Active transport involves movement of substances against a chemical gradient. Vesicle transport requires energy for movement of substances against a chemical gradient.... So the answer is [(C)]

Where are roundworms useful in an ecosystem?
Options:
- (A) killing animals
- (B) soils
- (C) fields
- (D) bacteria
- (E) eating plants
- (F) wetland
- (G) food
- (H) alveoli
--
Let's think first: Roundworms make up the phylum Nematoda. Also, nematoda and rotifera are important groups contributing to soils. Roundworms make important contributions to soils.... So the answer is [(B)]

What do many plants do to respond to the shorter days in fall?
Options:
- (A) go through a resting period
- (B) changing the phase
- (C) Release energy
- (D) Generating heat
- (E) produce more pollen
- (F) colder and wetter
- (G) grow taller
- (H) make more chlorophyll
--
Let's think first: Many plants respond to the days growing shorter in the fall by going dormant. Plants can be divided at any time, although the dormant or rest period is best. Many plants respond to the days growing shorter in the fall by going through a rest period.... So the answer is [(A)]

Which item found in the human body is smaller?
Options:
- (A) the eyes
- (B) Epidermis
- (C) all matter
- (D) Fingernail.
- (E) Inches
- (F) Baby tooth.
- (G) Small eyelash.
- (H) Neuron.
--
Let's think first: Cells vary in size as well as shape, but all cells are very small. Neurons are cells that are similar to other cells. Neurons are very small in size.... So the answer is [(H)]

What is hair not considered?
Options:
- (A) lack
- (B) zinc
- (C) loss
- (D) Fat
- (E) long
- (F) CFCs
- (G) gold
- (H) p53
--
Let's think first: Hair helps to insulate and protect the body. Lean body mass and body fat are derived from total body water. Hair is not considered fat.... So the answer is [(D)]

How do organisms give rise to children?
Options:
- (A) mitosis
- (B) reproduction
- (C) reproductive isolation
- (D) Plants growth
- (E) it needs them
- (F) litter
- (G) by indirect light
- (H) replenishing
--
Let's think first: Reproduction is the process by which organisms give rise to offspring. Seed refers to offspring, children. Organisms give rise to children by reproduction.... So the answer is [(B)]