Bio 117 Final - transport is ________. Answers: A. the concentr...

Bio 117 Final 2023/2024 The force driving simple diffusion is ________, while the energy source for active transport is ________.

Answers:

• the concentration gradient; ADP
• phosphorylated protein carriers; ATP
• the concentration gradient; ATP
• transmembrane pumps; electron transport - ANSWER C. the

concentration gradient; ATP Which structure in the mammalian kidney is responsible for maintaining the osmotic gradient in medulla of the kidney?

Answers:

• proximal tubule
• collecting duct
• loop of Henle
• renal corpuscle
• distal tubule - ANSWER C. loop of Henle

Which of the following pairs of organisms excrete nitrogenous wastes in the form of uric acid? 1 / 4

Answers:

• insects and birds
• humans and frogs
• fish and turtles
• lions and horses
• mice and birds - ANSWER A. insects and birds

In animals, nitrogenous wastes are produced mostly from the catabolism of

________.

Answers:

• starch and cellulose
• proteins and nucleic acids
• phospholipids and glycolipids
• triglycerides and steroids
• fatty acids and glycerol - ANSWER B. proteins and nucleic acids

Ammonia ________.

Answers:

• has low toxicity relative to urea
• is metabolically more expensive to synthesize than urea
• is the major nitrogenous waste excreted by insects
• is soluble in water
• can be stored in the body as a precipitate - ANSWER D. is

soluble in water Which nitrogenous waste requires hardly any water for its excretion?

Answers:

• urea 2 / 4

• uric acid
• nitrogen gas
• ammonia
• amino acids - ANSWER B. uric acid

The necropsy (postmortem analysis) of a freshwater fish that died after being placed accidentally in saltwater would likely show that ________.

Answers:

• loss of water by osmosis from cells in vital organs resulted in cell death and

organ failure

• high amounts of salt had diffused into the fish's cells, causing them to swell and

lyse C.the kidneys were not able to keep up with the water removal necessary in this hyperosmotic environment, creating an irrevocable loss of homeostasis

• the gills became encrusted with salt, resulting in inadequate gas exchange and

a resulting asphyxiation E.brain cells lysed as a result of increased osmotic pressure in this hyperosmotic environment, leading to death by loss of autonomic function - ANSWER

• loss of water by osmosis from cells in vital organs resulted in cell death and

organ failure A prokaryote that obtains energy from light is a(n) ________.

Answers:

• autotroph and phototroph
• chemotroph
• phototroph
• autotroph, phototroph, and chemotroph
• heterotroph and chemotroph - ANSWER C. phototroph 3 / 4

Which of the following traits do archaeans and bacteria share?

Answers:

• composition of the cell wall
• lack of a nuclear envelope
• presence of plasma membrane
• both A and B
• both B and C - ANSWER E. both B and C

Which of the following lists contains the steps of development in the correct order?

Answers:

• Cell cleavage, fertilization, gastrulation, organogenesis
• Gastrulation, cell cleavage, organogenesis, fertilization
• Fertilization, cell cleavage, gastrulation, organogenesis
• Cell cleavage, fertilization, organogenesis, gastrulation
• Fertilization, gastrulation, cell cleavage, organogenesis - ANSWER
• Fertilization, cell cleavage, gastrulation, organogenesis

Which of the following are characteristics of Phylum Cnidaria? (Select All that Apply)

THREE ANSWERS

Answers:

• True Tissues
• Specialized stinging cells
• Complete digestive system
• Nerve Net - ANSWER A. True Tissues
• Specialized stinging cells
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