Introduction-to-Biology exam dumps

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WGU Introduction-to-Biology Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Genetics and Heredity	20–25%	- Chromosomes and cell division - Mendelian and non-Mendelian inheritance - DNA structure and replication - Mutation and genetic variation - Gene expression and protein synthesis
Topic 2: Energy and Metabolism	15–20%	- Enzymes and metabolic pathways - Cellular respiration - Photosynthesis - Energy flow in biological systems
Topic 3: Ecology and Interdependence	15–20%	- Ecosystem structure and energy flow - Community interactions - Biomes and global ecology - Human impact on ecosystems - Population dynamics
Topic 4: Evolution and Diversity of Life	15–20%	- Mechanisms of evolution - Overview of major biological groups - Natural selection and adaptation - Speciation and classification
Topic 5: Basic Principles of Life	20–25%	- Characteristics of living organisms - Scientific method and biological inquiry - Cell structure and function - Chemical foundations of life

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WGU Introduction to Biology (KBC1, C190) Exam Sample Questions (Q40-Q45):

NEW QUESTION # 40
Which comparison ofDNA and RNAis correct?

A. DNA stores hereditary information; RNA is used to make proteins.
B. DNA is single-stranded; RNA is double-stranded.
C. DNA is a monomer; RNA is a polymer.
D. DNA uses uracil; RNA uses thymine.

Answer: A

NEW QUESTION # 41
(Use the exhibit "Simple Diffusion (No ATP)".) What process is depicted?

A. Active transport, which does not require energy
B. Simple diffusion, which does not require energy
C. Facilitated diffusion, which requires energy
D. Osmosis, which requires energy

Answer: B

NEW QUESTION # 42
A researcher studies an organism with these traits:~0.3 #msize, cell membrane enclosing contents,free ribosomesin cytoplasm, andgenetic material loosely distributedin the cytoplasm. Which statement is true?

A. It is a eukaryote with both a cell membrane and cell wall.
B. It is a prokaryote because it lacks a nucleus.
C. It is a prokaryote because it is microscopic.
D. It is a eukaryote because it contains ribosomes.

Answer: B

NEW QUESTION # 43
A cell has increased in size and is preparing to divide. Before division, DNA must be replicated.During which stageof the cell cycle is DNA replicated?

A. G#
B. G#
C. Synthesis
D. Cytokinesis

Answer: C

NEW QUESTION # 44
What is the name of the structure thatjoins two sister chromatidstogether?

A. Histone
B. Chromosome
C. Centromere
D. Nucleus

Answer: C

NEW QUESTION # 45
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