Friday, March 9, 2019. Day 3

Homeroom:

Grade 8 Agenda:

Homework:

Closed notes quiz on unit vocabulary on Tuesday.

Flash cards due Monday

sexual reproduction egg sperm fertilization

zygote haploid diploid homologous chromosomes

meiosis

Do Now:

Open your notebook and turn to your vocabulary notes on Sexual Reproduction, Diploid cells and Haploid cells

Prepare to take the Open Notes Quiz when instructed.

Lesson:

Review your Mitosis quiz results - released and emailed.

Chapter Content Outline - Diploid and Haploid Cells

  1. Organisms that reproduce sexually form two types of cells.

    • sex cell

    • body cells

  2. Body cells have pairs of chromosomes

    • diploid cells

  3. Chromosomes are in pairs because individuals receive similar chromosomes from each parent

    • similar means each has genes for the same trait arranged in the same way on the chromosome

    • homologous chromosomes

    • because they come from different parents they are similar but not identical

    • ex. both might have an eye color genes, but Mom’s might be blue and Dad’s might be brown

  4. All 23 human chromosomes are in homologous pairs

    • humans have 23 pairs of chromosomes (which equals 46)

    • Having the incorrect number of chromosomes leads to a chromosomal abnormality

    • 3 copies of chromosome 21 causes Down Syndrome

  5. Other organisms have different numbers

  6. Sex cells are different from body cells

    • sex cells have half the number of chromosomes

    • only one chromosome from each pair - 23 single chromosomes

    • haploid cells

  7. sex cells are produced by meiosis

Sexually reproducing organisms have pairs of similar chromosomes - pairs because one is inherited from each parent.

Sexually reproducing organisms have pairs of similar chromosomes - pairs because one is inherited from each parent.

Mitosis Quiz Results review

WIN:

Conference and study Time

Grade 7 Agenda:

Awards Schedule

  • 12:35 - 1:05 Period 5

  • 1:05 - 1:35 Period 6

  • 1:35 - 2:05 Period 7

  • 2:05 - 2:10 pack up and transition to cafeteria


Homework:

No Homework

Do Now:

Please get out:

Lesson:

Review Launch Lab

Review FORMS OF ENERGY: KINETIC ENERGY AND POTENTIAL ENERGY WORKSHEET

SLANT: Kinetic and Potential Energy

  1. energy is the ability to cause change

    • energy is measured in a unit called the joule

  2. kinetic energy is energy due to motion.

    • It is affected by speed and mass

    • as speed increases so does kinetic energy

    • as mass increases so does kinetic energy

    • examples…

  3. Potential energy is energy that is stored due to interactions between objects or particles.

    • Gravitational potential energy: energy stored by the attraction between two object’s due to gravity

    • depends upon weight and height

    • weight is mass x gravitational acceleration

    • PE = m ∙ g ∙ h

    • examples…

  4. Elastic potential energy: energy stored in objects that are compressed or stretched

    • rubber band

  5. chemical potential energy: energy stored in chemical bonds between atoms

    • fuels like gasoline and wood

    • food