Biology Chapter 1: Exploring Life

<p>The cell's activities and functions (C)</p> Signup and view all the answers

<p>Nucleotides and their sequences (B)</p> Signup and view all the answers

<p>It can lead to mutations affecting protein synthesis (A)</p> Signup and view all the answers

<p>Genetic information is passed in the form of genes (C)</p> Signup and view all the answers

<p>In chromosomal structures as DNA (A)</p> Signup and view all the answers

<p>They result from interactions among component parts at each level. (A)</p> Signup and view all the answers

<p>Cells are the smallest units that can perform all activities required for life. (B)</p> Signup and view all the answers

<p>Prokaryotic cells were the first to evolve and lack membrane-enclosed organelles. (D)</p> Signup and view all the answers

<p>Eukaryotic cells contain a nucleus that houses DNA. (A)</p> Signup and view all the answers

<p>They develop mechanisms to regulate their internal environment. (D)</p> Signup and view all the answers

<p>Membranes regulate the passage of materials between the cell and its surroundings. (A)</p> Signup and view all the answers

<p>The emergence of new properties occurs at each level. (C)</p> Signup and view all the answers

<p>Cells replicate their genetic material to reproduce. (B)</p> Signup and view all the answers

<p>Natural selection (C)</p> Signup and view all the answers

<p>Species are descendants of ancestral species with changes over time. (C)</p> Signup and view all the answers

<p>They accumulate in the population over time. (D)</p> Signup and view all the answers

<p>Scientific reasoning generates hypotheses. (C)</p> Signup and view all the answers

<p>A proposed explanation for a set of observations. (A)</p> Signup and view all the answers

<p>It encompasses a broad range of phenomena. (D)</p> Signup and view all the answers

<p>It draws general conclusions from specific observations. (B)</p> Signup and view all the answers

<p>It favors traits that enhance survival and reproduction. (A)</p> Signup and view all the answers

The movement of energy through an ecosystem, starting with the sun and flowing to producers, consumers, and ultimately being released as heat.

Organisms that produce their own food through photosynthesis, primarily plants.

Organisms that obtain energy by consuming other organisms, including animals.

Organisms that break down dead organisms and return their nutrients to the soil. Examples include fungi and bacteria.

The process by which producers use sunlight to convert carbon dioxide and water into food (sugars).

The chemical substance of genes, which carries the genetic instructions for all living organisms.

The units of inheritance that transmit information from parents to offspring, controlling a cell's activities.

Long DNA molecules that organize genes.

The process where species change over time, descending from earlier forms of life.

A mechanism of evolution where organisms with beneficial traits are more likely to survive and reproduce.

The accumulation of favorable traits in a population over time, a result of natural selection.

Drawing general conclusions from many specific observations.

Using general premises to predict specific results.

A proposed explanation for a set of observations.

A broad explanation supported by a large amount of evidence.

The idea that species living today are descendants of ancestral species.

New characteristics that arise when components interact at a higher level of organization.

The smallest unit of life that exhibits all the properties of life (organization, growth, response, etc.).

A thin layer surrounding a cell that controls what enters and exits.

Simpler cell type without membrane-bound organelles.

More complex cell type with membrane-bound organelles (like a nucleus).

Specialized part within a eukaryotic cell that performs a specific function.

The levels of organization in living things (atom, molecule, organelle, cell, tissue, organ, organ system, organism).