Q: Which equation correctly represents the overall process of photosynthesis?

$$6CO_2 + 6H_2O + \text{light energy} \rightarrow C_6H_{12}O_6$ + 6O_2$$

Question 1

Which of the following best describes the role of DNA in cells?

Accepted Answer

DNA encodes the genetic information that determines traits and guides the synthesis of proteins.

Question 2

A scientist compares the DNA sequences of two species and finds many similarities. What is the most likely conclusion?

Accepted Answer

The two species share a common evolutionary ancestor.

Question 3

Which of the following is NOT a shared feature of all cells?

Accepted Answer

Contains membrane-bound organelles such as a nucleus.

Question 4

Which process best explains how plants convert sunlight into chemical energy?

Accepted Answer

Photosynthesis

Question 5

A mutation changes the sequence of nucleotides in a gene. What is the most likely direct effect?

Accepted Answer

The protein encoded by the gene may have a different amino acid sequence.

Question 6

Which of the following best illustrates the concept of 'emergent properties' in biology?

Accepted Answer

A tissue can perform functions that individual cells cannot, due to the arrangement and interactions of its cells.

Question 7

Which of the following is a correct sequence of biological organization from smallest to largest?

Accepted Answer

Cell → Tissue → Organ → Organism

Question 8

A population of bacteria is exposed to an antibiotic. Over time, some bacteria survive and reproduce. Which biological theme does this scenario best illustrate?

Accepted Answer

Evolution

Question 9

Which statement about prokaryotic and eukaryotic cells is correct?

Accepted Answer

Eukaryotic cells are generally larger and more complex than prokaryotic cells.

Question 10

Which equation correctly represents the overall process of photosynthesis?

Accepted Answer

$$6CO_2 + 6H_2O + 	ext{light energy} ightarrow C_6H_{12}O_6$ + 6O_2$$

Question 11

Which of the following best describes the function of mRNA in gene expression?

Accepted Answer

mRNA is transcribed from DNA and carries the genetic code to be translated into a protein.

Question 12

A scientist wants to study all the proteins produced by a human cell. Which field of study is most relevant?

Accepted Answer

Proteomics

Question 13

Which of the following is an example of a biological interaction?

Accepted Answer

A predator hunting prey in an ecosystem.

Question 14

Which statement about the genetic code is TRUE?

Accepted Answer

The genetic code is nearly universal among all living organisms.

Question 15

A human cell contains about 3 billion nucleotide pairs in its genome. If each textbook page can hold 5 million nucleotide pairs, approximately how many pages would be needed to write out the entire genome?

Accepted Answer

$$\frac{3,000,000,000}{5,000,000} = 600$$ pages

Question 16

Which of the following is a direct result of gene expression?

Accepted Answer

Synthesis of a specific protein from the information encoded in DNA.

Question 17

Which of the following best explains why differences in nucleotide sequences between organisms are important?

Accepted Answer

They determine the differences in the proteins and traits of each organism.

Question 18

Which of the following is an example of a protein-encoding gene's indirect effect?

Accepted Answer

A gene is transcribed into mRNA, which regulates the expression of other genes.

Question 19

Which technological advancement has MOST contributed to the rapid progress in genome sequencing since the 1990s?

Accepted Answer

Development of high-throughput technology for analyzing many samples quickly.

Foundations of General Biology: Life, Cells, and Genetic Information

Guida di studio - Domande di pratica

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