(question). What can fatty acids be combined with, in addition to carbon and oxygen?
Options:
- (A) Sodium
- (B) Energy.
- (C) glucose
- (D) Carbon Dioxide
- (E) Fuel cells
- (F) Uranium
- (G) Hydrogen
- (H) Energy
(answer). Lipids may consist of fatty acids alone, or they may contain other molecules as well. Lipids Lipids are also composed of carbon, oxygen and hydrogen. Carbon, oxygen, and hydrogen can be combined with fatty acids.
The answer is (G)

(question). What is called when plants grow toward the sun or an artificial light?
Options:
- (A) Exfoliation
- (B) Brownian motion
- (C) heat energy
- (D) phototropism
- (E) photovoltaic
- (F) autumn
- (G) peachleaf willow
- (H) mitosis
(answer). Plants exhibit phototropism, or growing toward a light source. Many light sources such as the sun and most artificial lights produce unpolarized light. Plants exhibit phototropism, or growing toward the sun or artificial light.
The answer is (D)

(question). Bacterial infection can inhibit ejaculation of what?
Options:
- (A) babies
- (B) sperm
- (C) sugar
- (D) animals
- (E) erection
- (F) eggs
- (G) humans
- (H) pregnancy
(answer). Ejaculation occurs when muscle contractions propel sperm from the epididymes. Bacteria usually cause epididymitis. Ejaculation of sperm can be inhibited by bacterial infection.
The answer is (B)

(question). Where can amphibians that move like earthworms be found?
Options:
- (A) moist bodies
- (B) body water
- (C) storing water
- (D) during the day
- (E) four limbs
- (F) moist soil
- (G) dry areas
- (H) high altitudes
(answer).
Caecilians can be found in moist soil near rivers and streams in tropical regions. Caecilians are amphibians that move just like earthworms. Amphibians that move like earthworms can be found in moist soil near rivers and streams in tropical regions.
The answer is (F)