Sophia - Human Biology - Unit 1 Milestone 1
1
Which of the following statements about enzymes is true?
• Any enzyme in your body is capable of
... [Show More] taking part in any type of reaction.
• Enzymes most often help to slow down reactions in the body.
• An enzyme can act to either join substrates together or break them down.
• The substrate will be physically different, but not chemically different after being acted upon by an enzyme.
CONCEPT
Enzymes
2
Which of the following is present only in RNA?
• Cytosine
• Adenine
• Guanine
• Uracil
CONCEPT
Nucleic Acids
3
Which of the following statements is true?
• Diffusion involves the breaking down of dead organelles.
• Diffusion involves the movement of molecules into or out of a cell.
• Diffusion involves the movement of molecules using transport proteins.
• Diffusion involves the movement of molecules in the cytoplasm.
CONCEPT
Diffusion
4
Select the statement that is TRUE regarding metabolism.
• In catabolism, glucose is combined to form a complex carbohydrate.
• In catabolism, complex carbs, proteins and other molecules are disassembled.
• In anabolism, complex carbs, proteins and other molecules are disassembled.
• In anabolism, polysaccharides are turned into monosaccharides.
CONCEPT
Metabolism
5
Which type of lipid doesn't have glycerol?
• Triglyceride
• Sterol
• Saturated fat
• Phospholipid
CONCEPT
Lipids
6
Which of the following sources of information is most credible?
• An unbacked statement from a trusted friend
• A high school biology textbook written and reviewed by a team of biology professors
• Medical advice given by a nursing intern during an appointment
• A lecture given by a biology teacher on the first day of class
CONCEPT
Evaluate Information
7
Which statement is true?
• All cells have DNA.
• In eukaryotic cells, DNA floats freely in the cytoplasm.
• Prokaryotic cells don't have a plasma membrane.
• Prokaryotic cells don't have DNA.
CONCEPT
Cell Theory
8
What is the main integrator in the human body?
• The eyes, ears, nose, tongue and touch receptors
• The spinal cord
• The brain
• The muscular system
CONCEPT
Homeostasis
9
Which of the following is a biological class?
• Ursidae
• Animalia
• Chordata
• Mammalia
CONCEPT
Organisms
10
What is true about the electron transport chain (ETC)?
• The electron transport chain produces the same number of ATP as the Krebs cycle.
• The electron transport chain takes place in the cytoplasm of the cell.
• The largest byproduct of the electron transport chain is carbon dioxide.
• ATP and water are products of the electron transport chain.
CONCEPT
Electron Transport Chain
11
Which of the following is a characteristic of the nucleus?
• It is not found in eukaryotic cells.
• It houses the cell's DNA.
• It is a double membrane that surrounds the nuclear envelope.
• It is a pocket in the cell's plasma membrane that houses DNA.
CONCEPT
Nucleus
12
How many turns of the Krebs cycle are required to break down one molecule of glucose?
• One
• Four
• Two
• Three
CONCEPT
Krebs Cycle
13
Which of the following is a component of cell membranes and includes a hydrophilic head, a glycerol backbone and two fatty acid tails?
• Triglycerides
• Nucleic acids
• Phospholipids
• Fatty acids
CONCEPT
Plasma Membrane
14
Which of the following statements is true?
• Glycolysis requires oxygen to happen.
• Glycolysis breaks a molecule of glucose into two phospholipids.
• Glycolysis occurs within the rough ER.
• Glycolysis has a net gain of two ATP.
CONCEPT
Glycolysis
15
Which statement about active transport is true?
• It involves the use of DNA.
• It does not require transport proteins.
• It requires ATP molecules.
• It involves smaller molecules only.
CONCEPT
Facilitated Diffusion
16
When solute concentration is lower outside of the cell than inside the cell, water will move in a net direction into the cell.
This is called a(n) _________.
• hypertonic solution
• selectively permeable solution
• isotonic solution
• hypotonic solution
CONCEPT
Osmosis
17
What is the cytosol?
• A part of the plasma membrane between the two layers of phospholipids
• A part of the cytoskeleton that helps anchor membrane proteins
• The liquid found inside the cytoplasm that is mostly composed of water
• The protein structure that provides support to the cell
CONCEPT
Cytoplasm
18
Chris is trying to determine whether the brand of coffee he drinks has an impact on his productivity.
Which of the following could be his prediction?
• "Based on many tests, I realize that Coffee A does not actually boost my productivity."
• "I notice that I'm more productive on days when I drink Coffee A."
• "I propose that Coffee A somehow boosts my productivity."
• "I predict that I'll be more productive on days when I drink Coffee A."
CONCEPT
Scientific Method
19
Which of the following describes an organic compound?
• A compound that cannot be broken down by the cell
• A compound found only in eukaryotic cells
• A compound made up of carbohydrates
• A compound that contains the element carbon
CONCEPT
Carbohydrates
20
In which kind of cells is the Golgi body found?
• Some eukaryotic and some prokaryotic cells
• Only prokaryotic cells
• All cells
• Only eukaryotic cells
CONCEPT
Golgi Body
21
At what level of protein structure are several amino acid chains joined together?
• Secondary
• Primary
• Quaternary
• Tertiary
CONCEPT
Proteins
22
Which of the following is a function of the mitochondria?
• To digest unwanted materials
• To help transport material into the cell
• To transfer genetic information to new cells
• To produce energy rich molecules
CONCEPT
Mitochondria
23
Which of the following is produced by the endoplasmic reticulum?
• ATP
• Lipids
• Nucleic acids
• Carbohydrates
CONCEPT
Endoplasmic Reticulum [Show Less]