These belong to the class of creature that were the first true tetrapods:
Options:
- (A) millipede
- (B) crabs
- (C) four limbs
- (D) bullfrogs
- (E) gastropod
- (F) a fish
- (G) warm-blooded
- (H) insects
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Let's think first: Amphibians are the first true tetrapods, or vertebrates with four limbs. Bullfrogs eat other amphibians. Bullfrogs are of the class of creatures that were the first true tetrapods.... So the answer is [(D)]
Fertilization occurs when an egg and what join together to form a diploid zygote?
Options:
- (A) rapid expansion
- (B) testosterone
- (C) gastropod shells
- (D) penis
- (E) peachleaf willow
- (F) pollen
- (G) male hormone
- (H) male gamete
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Let's think first: Fertilization occurs when a sperm and an egg fuse to form a diploid zygote. Male gametes are called sperm. Fertilization occurs when a male gamete and an egg fuse to form a diploid zygote.... So the answer is [(H)]
What do most pituitary hormones control?
Options:
- (A) Something that is self-aware
- (B) Molecular kinetic energy
- (C) Vomiting reflex
- (D) Animal survival
- (E) Veins and arteries.
- (F) an organism's body
- (G) metabolic reaction
- (H) Hormone producing structures.
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Let's think first: Most pituitary hormones control other endocrine glands. Endocrine Glands Endocrine glands are the hormone producing structures of the body. Most pituitary hormones control other hormone producing structures of the body.... So the answer is [(H)]
What kind of animal doesn't have a centralized nervous system?
Options:
- (A) dog
- (B) mammals
- (C) cows
- (D) bird
- (E) human
- (F) elephants
- (G) starfish
- (H) a fish
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Let's think first: Echinoderms lack a centralized nervous system. Echinoderms are represented by the starfish. Starfish lack a centralized nervous system.... So the answer is [(G)]
Which of the following uses energy that comes from body heat?
Options:
- (A) kinetic energy
- (B) evaporation of perspiration
- (C) kinetic friction
- (D) evaporation of snow
- (E) Transfers energy
- (F) a rock rolling down a hill
- (G) a fire burning near a campsite
- (H) converting mass to energy
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Let's think first: Evaporation of sweat uses energy, and the energy comes from body heat. Diaphoresis is a fancy medical term for perspiration or sweating. Evaporation of perspiration uses energy and the energy comes from body heat.... So the answer is [(B)]
An overheated body can use water for:
Options:
- (A) metabolic reaction
- (B) dehydrating
- (C) raising their temperature
- (D) heat produced
- (E) liquid
- (F) watering plants
- (G) evaporative cooling
- (H) retaining heat
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Let's think first: Sweat wets the skin, and when it evaporates, it cools the body. Sweat is made of salt and water. The evaporation of water from the skin cools the body.... So the answer is [(G)]