brain food mr. conner blackman high school. main parts of a microscope 1.what are the three main...
TRANSCRIPT
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