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Minchanka [31]
3 years ago
15

Yeast is a fungus and it can die. Bakers proof yeast to make sure it will respond and rise. A student tests different ways to pr

oof yeast by adding it to warm water and other ingredients. If the yeast is alive, the mixture should appear bubbly after five minutes. The results are shown in the table. According to the data, what is the BEST substance to use when proofing yeast.
A. Yeast responds to added salt
B. Yeast responds to added sugar
C. Yeast responds to added water
D. Yeast responds to the presence of light

Biology
2 answers:
Georgia [21]3 years ago
8 0

Answer: Option B

Explanation:

The experiment proves that the best food for the yeast is sugar. When sugar was used as a substrate for the yeast then it will perform aerobic respiration.

The yeast will perform cellular respiration in which the sugar is used as a substrate and carbon dioxide is released.

The is reason why bubble appeared after 5 minutes.

ruslelena [56]3 years ago
4 0
B. Yeast responds to added sugar
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a. transcription/RNA processing : pre-mRNA, snRNA

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Explanation:

pre-mRNA, mRNA, rRNA, RNA primers, snRNA

a. transcription/RNA processing : pre-mRNA, snRNA

b. translation : mRNA, rRNA,

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3 years ago
A woman and a man are both heterozygous for a recessive allele for a rare genetic disease. If they have one child, what is the p
makkiz [27]

Answer:

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A cross between two heterozygous Aa individuals will produce the followinf offspring: 1/4 AA, 2/4 Aa and 1/4 aa.

Since the disease is recessive, 1/4 of the offspring will have the <em>aa </em>genotype and 3/4 of the offspring will be unaffected.

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The probability of having at least one affected child is 1 - probability of no affected children = 1 - 9/16 = 7/16.

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