What substance will release hydrogen ions when its concentration is low, and accept them when its concentration is high?
1.salt
2.acid
3.base
4.buffer
5.alkali
4
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According to Figure 14.2, the average number of new mutations that occur across an entire human genome in one generation is around ____ times higher than in nematodes
A. 2 B. 10 C. 100 D. 1000 E. 10,000
In pea plants, the allele for round peas (R) is dominant to the allele for wrinkled peas (r). A gardener has a plant that his neighbor gave him that produces round peas, but he does not know its genotype. What simple procedure could he do to determine the genotype of his new plant?
a. Perform a dihybrid cross—if only 1 out of 16 offspring are wrinkled, then the new plant’s genotype is RR. b. Perform a test cross with a plant that has wrinkled peas—if any offspring give wrinkled peas, then the new plant’s genotype is Rr. c. Perform a test cross with a plant that has an Rr genotype—if all of the offspring give round seeds, then the new plant’s genotype is Rr. d. Perform a monohybrid cross—if any offspring give round peas, then the new plant’s genotype is RR.
Fertilization take place within a woman's body in which of the following ART techniques?
a. GIFT b. ICSI c. IVF d. ZIFT e. PGD
How many electrons are needed to reduce one molecule of NADP+ to NADPH?
a. one b. two c. three d. four e. five