Sophia Human Biology Milestone 1
Sophia Human Biology Milestone 1
1
Which of the following is a biological
... [Show More] class?
Mammalia
Chordata
Animalia
Ursidae
CONCEPT
Organisms
2
Which statement is true?
In eukaryotic cells, DNA floats freely in the cytoplasm.
Prokaryotic cells don't have a plasma membrane.
All cells have DNA.
Prokaryotic cells don't have DNA.
CONCEPT
Cell Theory
3
Which is a component of cellular respiration?
Glycolysis
ATP breakdown
Facilitated diffusion
Meiosis
CONCEPT
Mitochondria
4
Which organelle is mainly responsible for synthesizing proteins?
Smooth ER
Golgi body
Ribosomes
Nuclear envelope
CONCEPT
Endoplasmic Reticulum
5
What is true about the electron transport chain (ETC)?
The largest byproduct of the electron transport chain is carbon dioxide.
The electron transport chain is the second stage of cellular respiration.
During the electron transport chain, a hydrogen gradient is produced that is used to produce ATP from ADP.
The electron transport chain produces 36 net molecules of ATP.
CONCEPT
Electron Transport Chain
6
What type of lipid is made up of a glycerol molecule and three fatty acid side chains?
Sterol
Triglyceride
Saturated fat
Phospholipid
CONCEPT
Lipids
7
How many turns of the Krebs cycle are required to break down one molecule of glucose?
One
Two
Three
Four
CONCEPT
Krebs Cycle
8
At what level of protein structure do amino acid chains twist and fold?
Secondary
Primary
Tertiary
Quaternary
CONCEPT
Proteins
9
Which of the following is a characteristic of the nucleus?
It houses the cell's DNA.
It is a double membrane that surrounds the nuclear envelope.
It is not found in eukaryotic cells.
It is a pocket in the cell's plasma membrane that houses DNA.
CONCEPT
Nucleus
10
What is the cytosol?
The protein structure that provides support to the cell
A part of the plasma membrane between the two layers of phospholipids
The liquid found inside the cytoplasm that is mostly composed of water
A part of the cytoskeleton that helps anchor membrane proteins
CONCEPT
Cytoplasm
11
Which of the following statements is true?
Diffusion involves the movement of molecules using transport proteins.
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 in the cytoplasm.
CONCEPT
Diffusion
12
Which set of statements is true concerning the plasma membrane?
It is primarily composed of cellular fiber and it controls what enters and leaves the nucleus.
It is primarily composed of lipids and it keeps anything from entering or leaving the cell.
It is primarily composed of lipids and it controls what enters and leaves the cell.
It is primarily composed of proteins and nucleic acids, and it controls what enters and leaves the cell.
CONCEPT
Plasma Membrane
13
In which kind of cells is the Golgi body found?
All cells
Some eukaryotic and some prokaryotic cells
Only eukaryotic cells
Only prokaryotic cells
CONCEPT
Golgi Body
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 of the following describes a disaccharide?
It can have up to two sugar units.
It has many sugar units.
It has no sugar units.
It is also an oligosaccharide.
CONCEPT
Carbohydrates
16
Which of the following is part of a nucleotide?
Proteins
DNA
Amino acid
Sugar
CONCEPT
Nucleic Acids
17
Which of the following sources of information is most credible?
A high school biology textbook written and reviewed by a team of biology professors
An unbacked statement from a trusted friend
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
18
Which of the following statements about enzymes is true?
Enzymes are composed primarily of carbohydrates.
The function of an enzyme is to speed up chemical reactions that occur in your body.
Enzymes are single-use proteins that must be regenerated after each reaction.
Enzymes can only break down larger substances into smaller ones.
CONCEPT
Enzymes
19
What molecules in the cell membrane help move molecules from a low to a high concentration gradient?
Endocytosis
Vesicles
Transport proteins
Diffusion pumps
CONCEPT
Facilitated Diffusion
20
Which of the following is an example of an integrator working to maintain homeostasis?
The brain processes information about blood calcium levels being too high and determines that calcium levels need to be lowered.
The heart begins pumping faster if blood pressure drops too low.
Muscle cells cause you to shiver in an attempt to raise your body temperature if it is too low.
Thermoreceptors in your body detect a change in temperature when you walk into an air-conditioned building.
CONCEPT
Homeostasis
21
Select the statement that is TRUE regarding metabolism.
In catabolism, complex carbs, proteins and other molecules are disassembled.
In anabolism, polysaccharides are turned into monosaccharides.
In catabolism, glucose is combined to form a complex carbohydrate.
In anabolism, complex carbs, proteins and other molecules are disassembled.
CONCEPT
Metabolism
22
When solute concentration is equal inside and outside of a cell, it is __________.
hypotonic
hypertonic
selectively permeable
isotonic
CONCEPT
Osmosis
23
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?
"I notice that I'm more productive on days when I drink Coffee A."
"Based on many tests, I realize that Coffee A does not actually boost my productivity."
"I predict that I'll be more productive on days when I drink Coffee A."
"I propose that Coffee A somehow boosts my productivity."
CONCEPT
Scientific Method [Show Less]