Penn Foster

Penn Foster Introduction to Biology Exam Questions and Answers 100% Solved ____ are the smallest units of life. - Cells Order of biological organization - Population, Community, Ecosystem, Biosphere A modification that makes organisms more suited to their environment is called: - Adaptation The life domain whose members live in very harsh environments, such as salt lakes and hot springs, is: - Archaea During a scientific experiment, the control group is: - identical to the experimenta...

Penn Foster Biology Book 1 Exam Questions with 100% Correct Answers . In the nineteenth century, what was known about atoms? - The atom determines the chemical property of an element. How does this snake obtain nutrients from corn? - . By eating the lizard Based on this image, what can be inferred about the organization of life? - . Bigger systems build on smaller systems Why are there many niches of species in one mountain? - The elevation changes of the mountain cause different climate...

PENN FOSTER BIOLOGY: Genetics and Inheritance Exam Questions and Answers 100% Solved Trisomy - having three copies of a chromosome instead of two euploid - organism with the appropriate number of chromosomes Aneuploid - organism with more or less chromosomes inappropriate for species X inactivation - organism has too many X chromosomes, so one is inactivated, not expressed Barr bodies - inactive extra X chromosome complex traits - genes interact to give rise to different phenotypes mu...

Penn Foster - Biology Lesson 1, The Nature of Science, the Chemistry of Life, and Ecology, Exercise Answer Key Exam Q&A 100% Solved Lesson 1 - Exercise: Science in Society - Section 1 - Exercise 1 of 3 1. Science is the systematic exploration of _______ about everything in the physical universe. - knowledge 2. _______ caused the end of the nomadic lifestyle of ancient humans. - Agriculture 3. Anthropology and psychology help us organize how humans _______. - learn 4. The _______ is a ...

Penn Foster Vet Tech Biology-Plant Structure and Function Exam Q&A 100% Solved Meristem cells/tissues - First cells when a plant embryo begins to develop; cells organize themselves into tissues Apical meristems - Tissues located at the ends of a plant; have 3 types of specialized tissues: epidermal, ground, vascular Epidermal, ground, vascular - 3 types of apical meristems Epidermal tissue - forms the outer protective covering of a plant; cells exposed to air are covered by a waxy cutic...

Penn Foster Biology Chapter 14-19 Exam Q&A with Complete Solutions Evolution - Genetic change in a line of descent over time. Fossils - Impressions, or casts, in sedimentary rocks of long deceased organisms. Biogeography - Te study of the distribution of organisims throughout the world. Summarize how nineteenth-century scientists contributed to the study of evolutionary change. - The work of Charles Darwin helped shape modern evolutionary thought. All species on Earth, including humans,...

Penn Foster - Biology Lesson 5, Plant and Animal Systems, and Behavior, EXAM (700042RR) 100% Pass 1. How would a biologist classify the plant stem shown? - Dicot stem 2. In ferns, the plant structure that produces sperm and egg cells is known as which of the following? - Gametophyte 3. Fish respiratory systems exchange gas and receive oxygen at the gills. This oxygen then enters the bloodstream and is pumped through the heart and back through the gills without first returning to the hear...

Structure and Function in Plants and Animals - penn foster self-check Exam Q&A 100% Solved The centrally located ground tissue of a eudicot stem is the - pith Of the following types of simple plant tissues, the _______ has a number of commercial uses. - sclerenchyma The _______ is the plant tissue in which photosynthesis occurs. - mesophyll Which of the following is not a trait of a monocot plant? - Two cotyledons In the process of _______, the evaporation of water creates a tension th...

Penn Foster - Intro To Biology L1: Chapter 1, Biology:The Science of Life Exam Q&A 100% Solved Biology - The scientific study of life Cell - The smallest, most basic unit of life Multicellular - Organisms composed of many types of cells Tissues - Formed by similar cells combining Organs - Formed when various tissues combine and work together in organ systems Organ Systems - Various organs combine to work together Population - All the members of a species (organisms with a similar stru...

Proper restraint - crucial to animal care three major categories restraint techniques - manual mechanical chemical Why do injuries of staff occur? - Improper restraint and not recognizing signs of fear or aggression What is fear-free restraint? - To form a common language between human and animal What species will likely display the greatest range of reactions to handling and restraint? - Dogs What is equipment used for restraining dogs? - Collars, leashes, muzzles and head snares...