1. Biology Study Guide Pdf

Fifteen minutes later, he rinsed both Petri dishes with a dilute solution of iodine to indicate the presence of starch. The surface of Petri dish 1 turned completely blue, indicating starch. Most of the surface of Petri dish 2 was blue, except the letter “X” was clear, as shown above.

The most probable explanation of the clear “X” is that.? The starch in the gel was absorbed by the damp cotton swab. The iodine reacted with a chemical in the saliva and broke down.

A chemical in the saliva broke down the starch in the gel. The saliva prevented the iodine from contacting the starch in the gel. The table below lists the typical diploid number of chromosomes of several different organisms. Which of the following is the best explanation for why the chromosome number is an even number in each of these organisms? It is only a coincidence; many other organisms have an odd number of chromosomes. The diploid chromosome number is always even so that when mitosis occurs each new cell gets the same number of chromosomes. The diploid chromosome number represents pairs of chromosomes, one from each parent, so it is always an even number.

Chromosomes double every time the cell divides, so after the first division, the number is always even. Fur color in cats is controlled by an autosomal gene that can occur in the dominant form, (B), or the recessive form, (b). The length of the cat’s fur is controlled by another autosomal gene that occurs in the dominant form, (S), or the recessive form, (s). The table below shows the traits for these allele codes. The following genotypes were found in a male cat and a female cat. BbSs (male) bbSS(female) Which one of the following choices is true of the phenotype of offspring from these parents?

All offspring will have black fur. All offspring will have white fur.

Biology Study Guide Pdf

All offspring will have long-haired fur.? All offspring will have short-haired fur. In a pond, the primary producer is a green alga, Spirogyra; the primary consumer is the crustacean, Daphnia; the secondary consumer is a small fish, the bluegill; and the tertiary consumer is a larger fish, the smallmouth bass. What changes can be expected in the pond if the Daphnia are killed with pesticides? The Spirogyra population will probably die.

The bluegill population will probably increase. The Daphnia population will eat something else. The smallmouth bass population will die. A genetic disorder due to a recessive allele (a) is lethal in homozygous individuals (aa), whereas heterozygous individuals (Aa) have no symptoms.

Based on this information, which of the following is likely to result? The disorder will quickly be eliminated since no recessive homozygotes will survive to reproduce. The disorder will be maintained in the population through the reproduction of heterozygotes.

Only homozygous dominant (AA) individuals will survive. The prevalence of the disorder will increase over time. A species of finch has been studied on one of the geographically isolated Galapagos Islands for many years.

Since the island is small, the lineage of every bird for several generations is known. This allows a family tree of each bird to be developed. Some family groups have survived and others have died out. The groups that survive probably have.? Interbred with other species.

Inherited some advantageous variations. Found new places on the island to live. Been attacked by more predators. Injecting a person with a killed-bacteria vaccine can protect that individual from a disease because the proteins of the killed bacteria.?

Remain in the body, and live bacteria later prey on them instead of live tissues. Bind with receptors in the body, so that live bacteria cannot bind with them later.

Stimulate the production of antibodies which can be manufactured later in response to infection. Give the person a mild form of the disease, which conditions the body not to respond to later infection.

​​​​​​​​​​​​​​​​​​​​​The are designed to encourage the highest achievement of K–12 students by defining the knowledge, concepts, and skills students should acquire in each grade level. Learn about the and its role in developing a single set of 'Common Core' standards in California. —developed by the Consortium for the Implementation of the Common Core State Standards (a collaborative group from CDE, CTA, ACSA, CSBA, CCSESA, and many other organizations).

—part of the new California Assessment of Student Performance and Progress (CAASPP) System State Resources State Guidance for Maximizing Investments in Professional Learning. The state guidance document (and the summary) describes the use of new professional learning funds supporting student, educator, and school system growth, incorporating all current state content standards (SB 77). ​ ​​​​​General Information. —introduction to brochures, executive summaries, curriculum frameworks Curriculum Framework Summaries. —the English Language Arts/English Language Development Framework for California Public Schools: Kindergarten Through Grade Twelve offers guidance for providing all California students a world-class education ​in English language arts and in literacy in history/social studies, science, and technical subjects. —the History-Social Science Framework for California Public Schools: Kindergarten Through Grade Twelve offers guidance for educators as they design, implement, and maintain a coherent course of study to teach content, develop inquiry-based critical thinking skills, improve reading comprehension and expository writing ability, and promote an engaged and knowledgeable citizenry in history and the related social sciences. ​—the Mathematics Framework for California Public Schools, K–12 highlights essential information and provides guidance in mathematics.

It includes a wealth of information and support for teachers, administrators, and parents/guardians. —the Science Framework for California Public Schools: Kindergarten Through Grade Twelve supports a three-dimensional vision of science education and is a valuable resource for teachers, administrators, parents, and curriculum developers. Starbucks logo standards manual. In the California Next Generation Science Standards (CA NGSS), students need to do more than simply know about science; they need to know core science and engineering ideas, do science and engineering, and think like scientists and engineers. Parent/Guardian Overview Brochures by Grade Level. These brochures explain the Common Core State Standards to pa​rents/guardians, providing insights into what students will learn and highlighting progression through the grade levels.