Traditionally, chymosin used in the food industry to make cheese was extracted from ____
a. mold fermentation
b. yeast fermentation
c. sheep stomachs
d. bacterial fermentation
e. calf stomachs
ANSWER: e
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Ian and Bryony are both carriers for two autosomal recessive disorders, PKU (chromosome 12) and cystic fibrosis (chromosome 7). They are expecting a daughter. What is the probability that she will have PKU but not CF?
A) 9/16 B) 3/16 C) 1/2 D) 1/16
Why did Mendel perform reciprocal crosses?
A) To obtain enough plants to perform the experiments that Mendel wanted. B) To test a hypothesis that stated the ovum carries all the information for progeny. C) To be able to breed plants year round. D) To determine whether the inheritance of a trait depends on which parent carries the trait.
Because a food chain underestimates the degree of complexity in most ecosystems, a food web is a more accurate depiction of the feeding relationships in an ecosystem
Indicate whether the statement is true or false
The cardiovascular system consists of the heart, blood vessels, and skeletal muscles.
Answer the following statement true (T) or false (F)