Ques:[What is needed from cells for phosphatases to keep the proper ph?
Options:
- (A) plasma
- (B) secretion of bases only
- (C) secretion of proteins
- (D) metabolic reaction
- (E) it helps plants in growing
- (F) Positive charges
- (G) Transfers energy
- (H) secretion of acids and bases]
Ans:[Cells secrete acids and bases to maintain the proper pH for enzymes to work. Phosphatases are enzymes that remove phosphates from other enzymes. Cells secrete acids and bases to keep the proper pH for phosphatases to work properly.
(H)]

Ques:[The penetration of the egg by a sperm takes place where?
Options:
- (A) salt and water.
- (B) an area swollen with pus
- (C) By wind and rain
- (D) outside the body
- (E) Earth revolving around the sun
- (F) inside the prostate
- (G) inside the female organism
- (H) inside the male organism]
Ans:[Fertilization takes place inside the female organism. Fertilization is the penetration of the egg by a sperm. The penetration of the egg by a sperm takes place inside the female organism.
(G)]

Ques:[What water dweller can be stimulated with amphetamines?
Options:
- (A) pearls
- (B) algae
- (C) swea
- (D) otters
- (E) fish
- (F) humans
- (G) sharks
- (H) sponges]
Ans:[Fish have a centralized nervous system with a brain. Amphetamines stimulate the central nervous system. Fish can be stimulated with amphetamines.
(E)]

Ques:[What is a main component of a virus?
Options:
- (A) Something that causes allergies
- (B) Leptospirosis
- (C) Localized damage
- (D) heat produced
- (E) deoxyribonucleic acid
- (F) Chemical energy
- (G) direct damage to the lungs
- (H) It helps them survive]
Ans:
[Viruses contain DNA but not much else. DNA DNA is deoxyribonucleic acid. Viruses contain deosyribonucleic acid, but not much else.
(E)]