The connective tissue cords that connect muscles to bones are called
A) thin filaments. B) thick filaments. C) tendons. D) ligaments.
C
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When an electron absorbs energy, it moves to a ________, and when it releases that energy, it ________
a. lower orbital / returns to its original position b. none of the choices c. higher orbital / returns to its original position d. higher orbital / emits radioactivity
The enzyme salivary amylase in the mouth breaks down starch into the simple sugar glucose. The mouth has a pH of 7. Salivary amylase will
A. also break down starch in the stomach, which has a pH of 2. B. be able to break down proteins to amino acids in the stomach. C. not be able to break down starch in a test tube. It needs to be in the mouth. D. work at temperatures lower than body temperature (37°C).
Humans are diploid organisms, containing two sets of chromosomes. How many sets of chromosomes does wheat, Triticum aestivum, have?
A. 1 B. 6 C. 8 D. 2 E. 4
In a family, both parents have freckles and widow's peak. Both of these traits are dominant: F = freckles, W = widow's peak
What is the correct phenotypic ratio of the next generation if the parents were heterozygous? The order of the genotypes is: freckled with widow's peak; freckled, straight hairline; no freckles with widow's peak; no freckles, straight hairline. A) 9:3:1:1 B) 9:3:3:1 C) 9:1:1:3 D) 1:3:3:9