Q: Which of the following equations correctly represents the overall process of photosynthesis?

$$6\ \mathrm{CO}_2 + 6\ \mathrm{H}_2\mathrm{O} + \text{light energy} \rightarrow \mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6 + 6\ \mathrm{O}_2$$

Question 1

Which of the following best explains why reproducibility is a critical aspect of the scientific method?

Accepted Answer

It allows other scientists to confirm results and build upon findings.

Question 2

A student is testing for the presence of starch in a plant sample. Which reagent should they use, and what color change indicates a positive result?

Accepted Answer

Iodine solution; yellow to blue-black

Question 3

Which of the following is NOT a proper lab safety procedure?

Accepted Answer

Disposing of broken glass in a regular trash bin

Question 4

A scientist observes that a dye spreads faster in warm water than in cold water. Which concept does this observation best illustrate?

Accepted Answer

Diffusion rate increases with temperature due to increased molecular motion.

Question 5

Which of the following equations correctly represents the overall process of photosynthesis?

Accepted Answer

$$6\ \mathrm{CO}_2 + 6\ \mathrm{H}_2\mathrm{O} + 	ext{light energy} ightarrow \mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6 + 6\ \mathrm{O}_2$$

Question 6

Which part of the compound light microscope is responsible for focusing light onto the specimen?

Accepted Answer

Condenser

Question 7

A cell with 46 chromosomes undergoes mitosis. How many chromosomes will each daughter cell have after division?

Accepted Answer

46

Question 8

Which of the following best describes the difference between aerobic and anaerobic respiration?

Accepted Answer

Aerobic respiration requires oxygen and produces more ATP than anaerobic respiration.

Question 9

In a dihybrid cross between two heterozygous pea plants (YyRr x YyRr), what is the expected phenotypic ratio of the offspring according to Mendel’s Law of Independent Assortment?

Accepted Answer

9:3:3:1

Question 10

A pedigree chart shows a trait that appears in every generation and affects both males and females equally. What is the most likely mode of inheritance?

Accepted Answer

Autosomal dominant

Question 11

Which of the following is an example of non-disjunction in humans?

Accepted Answer

A person with Down syndrome, who has three copies of chromosome 21

Question 12

Which of the following is NOT considered evidence for evolution?

Accepted Answer

Random mutation without selection

Question 13

A population of bacteria is exposed to an antibiotic. After several generations, most bacteria are resistant. Which process best explains this outcome?

Accepted Answer

Natural selection

Question 14

Which of the following best defines a semi-permeable membrane?

Accepted Answer

A membrane that allows certain molecules to pass while blocking others

Question 15

Which of the following best describes the difference between plant and animal cells under a microscope?

Accepted Answer

Plant cells have a cell wall and chloroplasts; animal cells do not.

Question 16

Which of the following is a correct statement about the gene pool of a population?

Accepted Answer

It includes all the alleles present in all individuals of the population.

Question 17

A student prepares a wet mount slide of pond water. Which step is essential to avoid trapping air bubbles under the coverslip?

Accepted Answer

Lower the coverslip at an angle onto the drop of water.

Question 18

Which of the following best describes the difference between somatic and sex cells?

Accepted Answer

Somatic cells are diploid and undergo mitosis; sex cells are haploid and produced by meiosis.

Question 19

Which of the following is an abiotic factor in an ecosystem?

Accepted Answer

Temperature

Question 20

A woman who is a carrier for an X-linked recessive trait (X	extsuperscript{N}X	extsuperscript{n}) and a man who does not have the trait (X	extsuperscript{N}Y) have a son. What is the probability that their son will express the trait?

Accepted Answer

$$50\%$$

BIO 100 Lab Final Review: Core Concepts and Techniques in Introductory Biology

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