Brain Food

Mr. Conner

Blackman High School

Main Parts of a Microscope

1. What are the three main parts of a microscope?

2. Labels the picture.

1. Tube with lenses, stage and light

What Year

When was the term “scientist” coined?

1840, science was used since 1300

UV Light Levels in MN

UV light levels are highest in late spring and early summer. At that same time of year, Minnesota’s frog population is laying eggs.

Is there a cause and effect relationship involved here? Give your observations.

Mass and Weight

1. Is mass and weight the same thing?

2. If a rocket has a mass of 105 tons on Earth, will the mass be greater, the same or less on the moon.

3. If a rocket has a weight of 105 tons on Earth, will the weight be greater, the same or less on the moon.

1. No; mass fundamental, and don’t change

weight is relative to conditions

2. 105 same

3. Less

Volume and the Egg

The volume of an egg and water in a beaker is 300ml. If the egg is removed, the volume of the water has changed to 225 mL.

1. What is the egg volume in cm3?

75 cm3

SI Meaning

The International System of Units is abbreviated SI because it stands for the Systeme International d’Unites. This is from which country?

Germany

France

Italy

Canada

France

Stimulus

List things that are stimuli to you and your life.

Red light

Alarm clock

Heat

Cold

Lichen in Antarctica

The flora of Antarctica is dominated by lichen.

Estimate the growth rate.

1mm every 100 days

1mm every 100 months

1mm every 100 years

1mm every 100 years

Growth and Development

Does growth and development mean the same things? Define.

Growth: an increase in size

Development: change in the form of an organism

Water and the Human Boy

The human body is what percent water? If a student has a mass of 40kg

Staple Crops

Match the Crop with the appropriate country.

Millet and Sorghum

Wheat and Barley

Corn and Squash

Rice and Soybeans

Europeans

Africans

Asians

Native Americans

Staple Crops answers

Match the Crop with the appropriate country.

Millet and Sorghum

Wheat and Barley

Corn and Squash

Rice and Soybeans

Europeans

Africans

Asians

Native Americans

How Much Oxygen

Each human red blood cell carries 250 million molecules of hemoglobin. The hemoglobin molecule can attach up to 4 oxygen molecules. What is the total amount of oxygen a single red blood cell with three oxygen molecules can carry?

750 million

Percent Water

It is said that 70% of a cell is water. Is this true for camels? For a cactus?

Yes

Subunits

Subunit of proteins is __________.

Subunit of starch is __________.

Sun unit of DNA is __________.

Amino acidsugarnucleotides

Lab Teezers

1. What is the number one problem using coverslips? How do you prevent this?

Problem: Air bubbles under slid.

Solution: Gently place down one side then slowly let the rest of the slide down.

How Many Cells

How many different cell are there in the human body?

1. 2

2. 20

3. 200

4. 2,000

5. 20,000

6. 200,000

200

Junk in an Elephant Trunk

Which of the following statements about an elephants’ trunk is not true?

1. The trunk is weighs 135k (300lbs)

2. The trunk I composed of skin, hair, connective tissue, nerves and muscles.

3. The trunk is used to drink, breathe, grab and greet friend.

4. There is too much junk in an elephant’s trunk.

4

Dead Cells1. How many pounds of dead skin will a person shed in a

lifetime?

10 pounds

40 pounds

60 pound

80 pounds

2. Which of these cells are dead cells??

Skin

Hair

Nails

Teeth

All except teeth

40 pounds!!!

Organ Size

Which organ is the body’s largest organ?

Heart

Brain

Skin

Large Intestine

Liver

Kidneys

Skin

Where the Red Fern Grows

Do ferns grow from seeds or spores?

spores

Dogs in My Body

Where are the dog related parts in your body?

Canines-teeth

Body of an Animal

Name all the animal on the human body.

Calf,

Large Egg

The largest egg in the world belongs to a bird. Which bird is it?

Penguin

Ostrich

Eagle

Gazelle

Ostrich

Cell Life Span

Match the cell with its life span.

Intestinal Cells

Red Blood Cells

Brain Cells

Several Years

120 days

Several days

Bear Hunt

When a bear hibernates in their winter dens, their body temperature decreases several degrees. Why is this and is it important.

Yes; lower body temperature decreases energy requirements, so bears can sleep long times without eating.

Bacteria Taste Test

Cotton swabyogurt with active cultureplastic microscope slidewaterplastic coverslipmicroscope

Rod shaped bacteria feed on the sugar in milk (lactose) and convert it into lactic acid.

Grape vs Raisin

1. Which has more water?

2. Which has more sugar?

Reaching Out

How do cells communicate with each other?

By cellular phone

Got Your Number

1. How many chromosomes does a human have?

2. The organism with the most chrommosomes is:

1. Zebra with 1560 pairs (1620)

2. The Ophioglossum reticulatum fern with 630 pairs (1260)

3. Elephant with 230 pairs (460)

23 pairs

Fern

Rolling On The River

1. Which is the longest River in the world 6,670 km?

2. Which is the second longest River in the World at 6,275 lm?

Nile

Amazon

Elvis’ Biome

Which biome was Elvis’ favorite.

Grassland

Rain Forest Destruction

Tropical Rain Forest are being cut down daily. One-fifth of all the worlds’ plant species live in tropical rain forest. Only a small number of these have been studied.

What are your thoughts on this fact.

Shrooms

Of the 3000 mushroom species grown in North America, __________ are poisonous.

a. 70

b. 700

c. 3000

d. 4000

70-80

Match the Mountain ranges with the appropriate place.

Caledonian MountainsAcadian MountainsAppalachian MountainUral MountainsPalisades MountainsRocky MountainsAndes MountainsAlps MountainsHimalayas Mountains

ScandinaviaNew YorkNorth AmericaRussiaNew JerseyNorth AmericaSouth America