5. While the origins of earth are predicted to have occurred 4.6 billion years ago, the earliest life forms did not evolve until 3.9 billion years ago. Eukaryotic organisms evolved 2.1 billion years ago, with multicellular organisms evolving 1.5 billion years ago. How many years elapsed between the evolution of eukaryotes and the evolution of multicellular organisms? 6. An average person who consumes 2,000 calories per day has a daily recommended intake of no more than 65 g of fat. For lunch today, you take a trip to McDonald's and have a 4 pounder with cheese (43 g fat) and large fries (25 g fat). Knowing that there are 9 calories in each gram of fat, by how many calories have you exceeded your daily recommended intake of calories from fats? 7. When the phospholipid shown below is hydrolyzed, how many hydrogen atoms will be in each fatty acid? IN D #ICIO-C a 1 H NMWNSI 1 CIFIC C-c-c-c-c-c-c-c-C-C-C-C-N 11111 1 HHHHHHHH 1 1 H H H H HHH 19 MNH2 te CHHHHHHHHHHHHHHH CLCLCCCCCCCCCCC H 14NHNNHM T M H 3 164 14 01P101N Hydrophilic head II 1 Aus Hydrophobik tail

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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**Transcription for Educational Website**

**Question 5:**
While the origins of Earth are predicted to have occurred 4.6 billion years ago, the earliest life forms did not evolve until 3.9 billion years ago. Eukaryotic organisms evolved 2.1 billion years ago, with multicellular organisms evolving 1.5 billion years ago. How many years elapsed between the evolution of eukaryotes and the evolution of multicellular organisms?

**Question 6:**
An average person who consumes 2,000 calories per day has a daily recommended intake of no more than 65 g of fat. For lunch today, you take a trip to McDonald's and have a ¼ pounder with cheese (43 g fat) and large fries (25 g fat). Knowing that there are 9 calories in each gram of fat, by how many calories have you exceeded your daily recommended intake of calories from fats?

**Question 7 and Diagram:**
When the phospholipid shown below is hydrolyzed, how many hydrogen atoms will be in each fatty acid?

**Diagram Description:**
The diagram illustrates a phospholipid structure. On the left, the hydrophilic head is shown, consisting of a phosphate group (\[ \text{O--O--P--O--R} \]) attached to a glycerol backbone. To the right, two long hydrophobic tails represent the fatty acid chains, each composed of carbon (C) and hydrogen (H) atoms. Each line between atoms represents a chemical bond. This diagram serves as a visual aid in understanding the molecular structure of phospholipids and their components in the context of hydrolysis.
Transcribed Image Text:**Transcription for Educational Website** **Question 5:** While the origins of Earth are predicted to have occurred 4.6 billion years ago, the earliest life forms did not evolve until 3.9 billion years ago. Eukaryotic organisms evolved 2.1 billion years ago, with multicellular organisms evolving 1.5 billion years ago. How many years elapsed between the evolution of eukaryotes and the evolution of multicellular organisms? **Question 6:** An average person who consumes 2,000 calories per day has a daily recommended intake of no more than 65 g of fat. For lunch today, you take a trip to McDonald's and have a ¼ pounder with cheese (43 g fat) and large fries (25 g fat). Knowing that there are 9 calories in each gram of fat, by how many calories have you exceeded your daily recommended intake of calories from fats? **Question 7 and Diagram:** When the phospholipid shown below is hydrolyzed, how many hydrogen atoms will be in each fatty acid? **Diagram Description:** The diagram illustrates a phospholipid structure. On the left, the hydrophilic head is shown, consisting of a phosphate group (\[ \text{O--O--P--O--R} \]) attached to a glycerol backbone. To the right, two long hydrophobic tails represent the fatty acid chains, each composed of carbon (C) and hydrogen (H) atoms. Each line between atoms represents a chemical bond. This diagram serves as a visual aid in understanding the molecular structure of phospholipids and their components in the context of hydrolysis.
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