Vocab
The class of macromolecule that would most likely be involved in contracting muscles would be
proteins
Joe needs 25 mL of motor oil to test his combine engine. Which tool would give him the most precise measurement?
A) Beaker
B) Flask
C) Test Tube
D) Graduated Cylinder
D) Graduated Cylinder
List the steps of the Technological Design Process in the correct order.
Problem Identification, Solution Design, Implementation, & Evaluation
The 4 main types of macromolecules found in organisms are carbohydrates, lipids, nucleic acids, & ?
Kia, Jay, & Gabi decide to test what factors influence water absorption by an egg. They remove the shell from 3 eggs by dissolving them in vinegar. They create 3 different water solutions. 1 is pure, 100% distilled water, a 2nd is 50% water / 50% corn syrup, & the 3rd is 100% corn syrup. The mass of each egg is measured before they're put into a single solution for 24 hours. The mass of the eggs are then measured, & the data recorded in a chart.
In this experiment, the independent variable they are testing is?
the type of solution the egg is placed in
Which organelle controls the passage of materials into & out of a cell?
Cell Membrane / Plasma Membrane / Phospholipid Bilayer
When designing an experiment, scientists will test a relationship between a "cause" & an "effect". The "effect", also represented by what the scientist measures & records, is known as the:
A) Constant
B) Dependent Variable
C) Control Group
D) Independent Variable
B) Dependent Variable
Animals store most of their excess energy reserves as _______________ because
fat; they store twice as much energy per gram
If available, the body will always digest which macromolecule for energy 1st?
carbohydrates
Kia, Jay, & Gabi decide to test what factors influence water absorption by an egg. They remove the shell from 3 eggs by dissolving them in vinegar. They create 3 different water solutions. 1 is pure, 100% distilled water, a 2nd is 50% water / 50% corn syrup, & the 3rd is 100% corn syrup. The mass of each egg is measured before they're put into a single solution for 24 hours. The mass of the eggs are then measured, & the data recorded in a chart.
This group also recorded a dependent variable, which is represented by?
the change in mass of the eggs
Which organelle produces energy (ATP) for the cell?
Mitochondria
Which organelle digests foreign substances & worn out cell parts?
A) Flagella
B) Lysosomes
C) Mitochondria
D) Ribosomes
In general, which trophic level has the LEAST energy available to it? Why?
tertiary consumer; "Rule of 10"; 90% of the energy for each level is used up; so each level only get's 10% of the previous level
Which organelle acts as a whipping propeller, moving a cell through its environment?
Flagella
Kia, Jay, & Gabi decide to test what factors influence water absorption by an egg. They remove the shell from 3 eggs by dissolving them in vinegar. They create 3 different water solutions. 1 is pure, 100% distilled water, a 2nd is 50% water / 50% corn syrup, & the 3rd is 100% corn syrup. The mass of each egg is measured before they're put into a single solution for 24 hours. The mass of the eggs are then measured, & the data recorded in a chart.
"If an egg is placed in a distilled water solution, then the egg will gain weight"
This process occurs when the cell uses energy to bring something in from outside the cell.
Endocytosis
The activation energy needed for a chemical reaction is lowered by a:
A) catalyst
B) reactant
C) product
D) substrate
A) catalyst
36-38 molecules of ATP can be produced from a single molecule of glucose only if?
oxygen is present
In a hypotonic solution, water will move _________ the cell, causing the cell to ___________.
into; lyse / swell
If a cell has 8 chromosomes, how many chromosomes will each of its daughter cells have after mitosis?
8
At the beginning of cellular respiration ___________ occurs, where glucose is broken down into pyruvate & ATP. This step does not require any oxygen.
glycolysis
Overall, photosynthesis is a reaction that:
A) absorbs energy, & is exothermic
B) releases energy & is exothermic
C) absorbs energy & is endothermic
D) releases energy & is endothermic
C) absorbs energy & is endothermic
What's the function of an ATP molecule?
stores energy / energy source
Plant cells make their own food through photosynthesis by taking in ___________________ & _______________.
Carbon Dioxide & Water
Ezra is in a weight-lifting program for 1 hour a day several days a week. During his workout, each exercise lasts only a minute or so because of how difficult the work is. A few hours after exercise, he notices that his muscles are sore & slightly swollen. HIs muscle cells have experienced ________________ that led to production of ______________.
anaerobic respiration; lactic acid