What occurs when a male gamete swims to an egg?
Options:
- (A) permineralization
- (B) competition
- (C) movement
- (D) rapid expansion
- (E) fertilization
- (F) birth
- (G) copulation
- (H) ovulation
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Let's think first: Fertilization occurs when sperm swim to an egg inside an archegonium. Gametes in males are called sperm, and in women commonly referred to as eggs. Fertilization occurs when male gametes swim to an egg.... So the answer is [(E)]


Temperature and pressure receptors in most animals are located:
Options:
- (A) Veins and arteries.
- (B) in one limb each
- (C) in the same organ
- (D) an organism's body
- (E) it keeps an organism warm
- (F) in two different organs
- (G) in plants
- (H) frontal zones
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Let's think first: Pressure receptors are found mainly in the skin. Temperature sensors in vertebrates are located in the skin and in the hypothalamus. Temperature and pressure sensors are located in the same organ in most animals.... So the answer is [(C)]


Cells have multiple repair mechanisms to fix mutations in what?
Options:
- (A) Veins and arteries.
- (B) Most plants
- (C) the body's largest organ
- (D) members of their own species
- (E) wavelengths and photons
- (F) epidermis and dermis
- (G) deoxyribonucleic acid
- (H) peachleaf willow
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Let's think first: Cells have multiple repair mechanisms to fix mutations in DNA. DNA DNA is deoxyribonucleic acid. Cells have multiple repair mechanisms to fix mutations in deoxyribonucleic acid.... So the answer is [(G)]


What do bacteria not have, for protein production?
Options:
- (A) Acids
- (B) alleles
- (C) ribosomes
- (D) layers of fat
- (E) light energy
- (F) heat energy
- (G) Energy
- (H) Energy.
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Let's think first: Ribosomes are small organelles where proteins are made. Bacteria contain no organelles. Bacteria do not have ribosomes for protein production.... So the answer is [(C)]


How do ants communicate to other ants to encourage them to follow?
Options:
- (A) Skywriting
- (B) Electrical energy
- (C) Using a phone to communicate
- (D) Leaving a written communicatio
- (E) Something coming from a gland
- (F) By wind and rain
- (G) Chemical energy
- (H) Leaving chemical trails
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Let's think first: Ants communicate with chemicals called pheromones. Physiologically, ants leave a trail of pheromones, which other ants then follow. Ants communicate by leaving chemical trails for other ants to follow.... So the answer is [(H)]


What uses food for energy?
Options:
- (A) Most plants
- (B) no organisms
- (C) agriculture
- (D) the Moon
- (E) animals
- (F) athletes
- (G) most organisms
- (H) the Sun
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Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Let's think first: Glucose is used for energy by the cells of most organisms. Food is converted into glucose. Food is used for energy by most organisms.... So the answer is [(G)]