BIO 203 Purdue Exam 1 Newest 2025 Complete

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BIO 203 Purdue Exam 1 Newest 2025 Complete All 50 Questions And Correct Detailed Answers (Verified Answers) |Already Graded A+||Brand New Version!!

During interphase, DNA must be accurately replicated because

• in the next cell division, a faithful copy must be passed on to

each of the daughter cells

• one copy must be transferred from the nucleus to the

cytoplasm

• a backup sequence is needed to guard against mutations
• cell cycle checkpoints are blocked if only a single copy of

DNA is present - ANSWER-a. in the next cell division, a faithful copy must be passed on to each of the daughter cells

When 1 molecule of glucose is metabolized, 4 carbons appear as carbon dioxide in the Krebs cycle, and the other two appear as carbon dioxide when

• glucose is converted to pyruvate
• oxaloacetic acid is converted to citric acid 1 / 3

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• acetyl-CoA is formed from pyruvate
• protons couple electron flow to ATP synthesis - ANSWER-c.

acetyl-CoA is formed from pyruvate

The mitotic spindle is attached at each end to two poles formed by the

• ribosomes
• centrosomes
• phagosomes
• lysosomes - ANSWER-b. centrosomes

Which is considered the normal pH of blood

• 6.4
• 8.0
• 7.0
• 7.4 - ANSWER-d. 7.4

The LAST step in the catabolism of fats is

• hydrolysis to fatty acids and glycerol
• glycogenolysis
• conversion to triglycerides 2 / 3

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• formation of acetyl-CoA - ANSWER-d. formation of acetyl-

CoA

Identify the incorrect statement

• failure of apoptosis can lead to formation of a tumor
• in human adults, fully differentiated neurons do not divide
• nuclear pores allow proteins to enter the nucleus from the

cytoplasm

• chromosomes consist of paired chromatids during G1 phase -

ANSWER-d. chromosomes consist of paired chromatids during G1 phase

Cell that is part of the immune system and is found in the epidermis (BEST answer)

• keratinocyte
• fibroblast
• melanocyte
• Langerhans - ANSWER-d. Langerhans

Which of the following would be an example of negative feedback

• increase in heat production when body temperature rises
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