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VHS Biology Week 1
The Characteristics of Life
| Question | Answer |
|---|---|
| What is the basic unit of structure and function in all living things? | cells |
| Which one shows the organization of living things from least to most complex? A. organelle - organ system - organ - organism B. cell - organelle - organ - organ system C. organelle - cell - tissue - organ D. cell - organ - tissue- organ system | B. cell - organelle - organ - organ system |
| Organisms grow and develop following specific instructions coded for by their … | genes or DNA |
| All of the offspring from an organism have the same genetic material, which is identical to the parent organism. From this we can conclude that this organism … is unicellular reproduces asexually lives in a marine environment reproduces sexually | reproduces asexually |
| All living things have DNA that is based on … a unique genetic code the result of protein synthesis a universal genetic code 5 different nucleotide bases | a universal genetic code |
| A tadpole changes into a frog over its lifetime. Which characteristic of life does this represent? growth homeostasis development reproduction | development |
| You accidentally touch a hot pan on the stove top and quickly pull your hand away. What is the response? hot pan burning pulling hand away stove top | pulling hand away |
| Which of the following is the characteristic of life that describes the process of maintaining a stable internal environment despite a changing external environment? DNA homeostasis evolution growth and development | homeostasis |
| Which of the following statements is not part of the cell theory? All cells come from preexisting cells All living things are made of one or more cells Cells are the fundamental unit of all living things All cells reproduce through meiosis | All cells reproduce through meiosis |
| Yeast is a tiny, single-celled fungus that reproduces by budding. As the small buds grow, it receives a copy of the parent’s genetic information. The new cell is smaller than the parent cell, but genetically identical. What type of reproduction is this? | asexual reproduction |
| The human respiratory system is an example of which level of biological organization? | organ system |
| Organisms can undergo evolution, meaning that the genetic makeup of... a population may change over time an organism may change over time a population shows no variation over time an organism shows no variation over time | Organisms can undergo evolution, meaning that the genetic makeup of a population may change over time. |
| Which molecule is present in all living cells and contains the information that determines the traits that a living thing inherits? cell ATP RNA DNA | DNA |
| A process where a particular organism transforms itself from a single cell into a more biologically complex organism. metabolism development biological organization growth | development |
| All living things obtain and use energy. Which characteristic of life does this represent? metabolism homeostasis reproduction evolution | metabolism |
| Which molecules are made up of DNA and passed down to offspring during reproduction? genes proteins macromolecules carbohydrates | genes |
| Which of the following is not true of DNA? serves as the primary unit of heredity in organisms specifies structure and function of living things every organism’s DNA contains the same four nucleotide bases it codes for nucleic acids | it codes for nucleic acids |
| Growth of a multicellular organism is mostly due to an increase in the _____ of cells. size number protons shape | number |
| What role does genetic variation play in the evolution of species? | it increases the chance that a species will possess characteristics well-suited for a changing environment |
| What is the most likely homeostatic response to an increase in environmental temperature? blood vessels constrict shivering and muscle contractions goose bump formation sweat production | sweat production |
| A giraffe grows taller during its lifetime. Which characteristic of life does this represent? evolution response to stimuli development growth | growth |
| A bird consumes a worm to obtain the energy it needs to carry out life functions. What characteristics of life does this represent? homeostasis metabolism evolution reproduction | metabolism |
| The sum of chemical reactions through which an organism builds up or breaks down materials to carry out life processes. homeostasis metabolism reproduction organization | metabolism |
| Which organelle is the site of cellular respiration? nucleus DNA mitochondria chloroplast | mitochondria |
| When comparing the offspring of sexually and asexually reproducing organisms, you would expect the genetic material of the sexually reproducing organism to … be less complex show less genetic variation show more genetic variation | show more genetic variation |
| What may occur when an organism fails to maintain homeostasis? growth rates within organs become equal the organism becomes ill or may die sugar supply for cells is overproduced water balance within the organism’s tissues is stabilized | the organism becomes ill or may die |
| Your pupils will constrict when light becomes suddenly much brighter. What is the stimulus? pupils light constriction homeostasis | light |
| Asexual reproduction only introduces genetic variation into the population if a random mutation in the organism’s DNA is passed on to the offspring. | true |
| Metabolism is the process of maintaining a stable internal environment despite a changing external environment. | false |
| Evolution acts on individual organisms during their lifetime. | false |
| With few variations, all life on Earth’s genetic code is nearly identical. | true |
| Tissues are more complex than organs. | false |
| Multicellular organisms are composed of one cell, while unicellular organisms are composed of more than one cell. | false |
| Sexual reproduction produces genetically identical offspring. | false |
| A weightlifter that gains muscle mass is an example of development. | false |
| Explain why fire is not considered a living thing. | Fire can grow larger, reproduce, consume oxygen, and can respond to its environment; however, it has no cells, organization, genetic information, and cannot evolve. |
| Compare and contrast the characteristics of life of a wooden bench and an oak tree. | A wooden bench and a tree are both made of the same types of atoms, contain DNA, and have cells; however, the bench is not alive. The bench cannot grow, develop, reproduce, metabolize, maintain homeostasis, evolve, or respond to stimuli. |
| Explain sexual reproduction. | Sexual reproduction: two parents pass down genes to produce genetically unique offspring; takes place in more complex organisms; slower; increases genetic diversity |
| Explain asexual reproduction | Asexual reproduction: one parent produces genetically identical offspring; faster, binary fission, budding, fragmentation |
| How are sexual and asexual reproduction similar processes? | Both: types of reproduction; makes new life; involves genes |
| List the 8 levels of biological organization from least to most complexity. | atom – molecule – organelle – cell – tissue – organ – organ system – organism |
| Describe the structure and function of DNA. | DNA is a double-helix shaped nucleic acid that contains nucleotides with bases that code for genetic traits. DNA stores genetic information needed to grow, reproduce, and perform life-sustaining activities. |
Created by:
Dr. Ervin
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