Which type of vesicle/vacuole is incorrectly matched with its description?
A) Secretory vesicle: Replenishes the lipid bilayer and deliver proteins for incorporation into the membrane
B) Vacuole: Contains water and substances such as nutrients, toxins, or waste products
C) Peroxisome: Protects the cell from hydrogen peroxide and other toxic oxygen intermediates
D) Transport vesicle: Moves substances to diverse cellular destinations within the cell
E) Lysosome: Contains hydrolytic enzymes that break down substances engulfed by the cell
Answer: A
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It’s the ninth inning, and the bases are loaded. As the pitcher winds up to throw the ball, how does each tissue in his arm contribute to this critical pitch? The ___________ of his fingers grips the ball. His __________ sends instructions that trigger his ___________ to contract. His ______________ provides stability and transmits the force produced.
A. ectoderm; ectoderm; mesoderm; endoderm B. connective tissue; nerve tissue; muscle tissue; epithelial tissue C. epithelium; ectoderm; mesoderm; endoderm D. epithelial tissue; nerve tissue; muscle tissue; connective tissue
Some ___ have enzymes to break the bonds of atmospheric nitrogen and use it for the metabolism of proteins and
other nitrogen containing molecules.
a. fungi b. bacteria c. plants d. protists e. animals
The Sahara Desert and the Negev Desert belong to the same ________
A) community B) savanna ecosystem C) biome D) temperate grassland
What are the products of one turn of the Krebs cycle?
A. 2 CO2, 6 NADH, 2 FADH2, 2 ATP B. 2 CO2, 3 NADH, 1 FADH2, 1 ATP C. 4 CO2, 6 NADH, 2 FADH2, 2 ATP D. 1 CO2, 2 NADH, 1 FADH2, 1 ATP E. 4 CO2, 12 NADH, 4 FADH2, 4 ATP