Biology B

EVOLUTION OF LIFE Darwin's Theory: 100% What is natural selection? a process that selects variations that help with survival and that spreads the variations to more offspring a process through which nature selects an individual within a population for extinction a process that causes all populations to gradually increase in size a process that causes random variations to appear in the offspring of every generation correct answer: a process that selects variations that help with surviv...

What is the function of the skeletal system? correct answer: provides, structure, support, and protection for internal organs Study the image. Which virus life cycle is pictured? correct answer: lytic cycle/ 5 green things in an egg shell, 2 are leaving A student examines a slide of unknown cells under the microscope and makes some observations. After making these observations, the student asks several questions. Which of the following questions would work BEST for forming a testable hyp...

tetrads correct answer: four identical spores formed during the process of meiosis; they are found in all mosses and ferns, and some algae. Bryophytes correct answer: - spore-producing, seedless, non-vascular land plants; - do not have roots -comprise moss, liverworts, and hornworts. - live in diverse habitats, all require abundant moisture to grow. - usually spread vegetatively to cover a large area. - grow close together in mats and are found on soil, rocks, and tree trunks. - lac...

Explain the purpose of DNA replication. The purpose is to produce two identical copies of a DNA molecule. The steps of DNA replication. 1. An enzyme breaks the hydrogen bonds between bases that hold the two strands together, which unzips the DNA 2. The DNA continues to unzip, nucleotides that are floating free into their base pair by hydrogen bonding. Another enzyme bonds these nucleotides into a bond. 3. This continues until the entire molecule has been unzipped and replicated. ...

What are the two types of cells called? correct answer: Prokaryotic and Eukaryotic Cells What is a characteristic of a Eukaryotic cell? correct answer: It is complex and includes all animal and plant cells. What is a characteristic of a Prokaryotic cell and an example of one? correct answer: They are small and simple cells, e.g bacteria. What Is the function of a Nucleus? correct answer: Contains genetic material that controls the activity of the cell. What is the function of Cyt...

Who is the father of Evolution? correct answer: Charles Darwin What did Darwin observe on the Galapagos Islands? correct answer: a. turtle shells and adaptation b. birds c. close islands and different climates What did Darwin note about the adaptations of the tortoises on the island? correct answer: the shape of the shell corresponds to the different habitats, (long necks and short necks) (curved and dome shells) Darwin correct answer: observed finches on the Galapagos Islands, fo...

What is a chromosome? correct answer: tightly packed rod shaped structures made of DNA and proteins What is the difference between sex chromosomes and autosomes? correct answer: sex chromosomes determine the gender, autosomes are the remaining chromosomes How many do we have of sex chromosomes and autosomes? correct answer: 46 total 2 sex chromosomes 44 autosomes (the remainder) Do all species have the same number of chromosomes? correct answer: No, they all have different numbers...

CHECKPOINT 22 Which describes symbiosis? correct answer: Two organisms belonging to different species live closely together and have specific interactions. What is the most specific ecological level? correct answer: an organism A tick feeding off the blood of a dog is an example of which type of relationship? correct answer: parasitism In which of the following situations would primary succession occur? correct answer: on an island just formed by a volcano Which of the followin...

Genetics Branch of biology that studies heredity Heredity All the traits that are passed biologically from parent to child Fertilization Process in sexual reproduction in which male and female reproductive cells join to form a new cell Karyotype A display of the chromosome pairs of a cell arranged by size and shape. Sex chromosomes One of the 23 pairs of chromosomes in the human, contains genes that will determine the sex of the individual. Autosome Any chromosome that ...

The ability for some individuals to be better suited for survival and reproduction is called _____________. correct answer: Fitness Which of the following is NOT needed in a population in order for natural selection to act? correct answer: A strong body When Darwin published his theory of evolution, he included all of the following ideas except ____________. correct answer: Mendel's ideas about genetics Which scientist's ideas on geology influenced the theory of evolution during th...