Bio Final Flashcards
Jesse observed an organism that he had never seen before, he described it as the following; single-celled wall, visible ribosomes, flagella, but no nucleus. What is Jess looking at?
A bacteria
Which of the following are characteristics that viruses have in common with living organisms?
They have DNA and can evolve
What does homeostasis refer to?
A. Change over time
B. Use nutrients for energy
C. Maintaining an internal balance
D. Not simply growing, but also becoming more complex
Maintaining an internal balance
Which of the following is a characteristic that distinguishes archaea from bacteria?
A. Archaea are prokaryotes
B. Archea have a cell wall
C. Archaea are extremophiles; they live in areas of very high temperatures, pressure, and salinity
D. Archaea are unicellular
Archaea are extremophiles; they live in areas of very high temperatures, pressure, and salinity
Where are protons and neutrons found?
A. They are in the orbits surrounding the atom’s nucleus
B. They are both located in the nucleus of an atom
C. Protons are in the nucleus and neutrons are found in the surrounding orbits
D. Neutrons are found in the nucleus and protons are found in the surrounding orbits
They are both located in the nucleus of an atom
Carbon 13 and carbon 14 have additional neutrons compared to the standard carbon 12, what is the addition of neutrons to an element called?
A. Ions
B. Isotopes
C. Electrolytes
D. Polarity
Isotopes
Which statement about electrons is FALSE?
A. They occupy orbits (or shells) around the nucleus of an atom
B. They are dynamic
C. They don’t move around- they are static
D. They form bonds to fill their outer shell
They don’t move around- they are static
Sodium(Na) has 11 protons and 11 electrons - it has 2 electrons on the first shell, 8 electrons on the second shell, and only one electron on its third shell, what will it do to have a full outer shell of 8 electrons?
A. It will share its electrons in a covalent bond
B. It will donate one electron to chlorine and form an ionic bond
C. It will accept 7 electrons from chlorine and form an ionic bond
D. None of the above, electrons do not move
It will donate one electron to chlorine and form an ionic bond
Which statement about covalent bonds is FALSE?
A. They are found in most biological molecules
B. They share electrons
C. They are the weakest type of chemical bond
D. They can be either polar or non-polar
They are the weakest type of chemical bond
What is moving through roots and up into the stems of a plant is an example of _______.
A. Adhesion
B. Capillary action
C. Cohesion
D. Photoropism
Capillary action
Which of the following is an INCORRECT match between the substance and pH level?
A. Lemon juice=3.0
B. Bleach=4.0
C. Hydrochloric=1.5
Distilled=7.0
Bleach=4.0
In the video we saw in class, we observed a white blood cell engulf a bacteria by phagocytosis, which organelle is responsible for digesting and destroying that bacteria?
A. A Golgi apparatus
B. That vacuole
C. The mitochondria
D. The lysosome
The lysosome
Which statement about the plasma membrane is FALSE?
A. There are proteins all along the plasma membrane
B. It is a phospholipid bilayer
C. It allows hydrophilic substances to easily move into the cell by simple diffusion
D. It is flexible and has movement
It allows hydrophilic substances to easily move into the cell by simple diffusion
If the cell did not have a cytoskeleton, what would happen?
A. It would not be able to synthesize proteins
B. It would lack shape and structure
C. It would not be able to produce ATP
D. It would not be able to package substances for export from the cell
It would lack shape and structure
Which of the following is polymer?
A. Amino acid
B. Nucleic acid
C. Fatty acid
D. Fructose
Amino acid
Which of the following is NOT a function of carbohydrates?
A. Quick energy
B. Stored energy
C. Structure
D. Insulation
Insulation
Which of the following statements about proteins is FALSE?
A. There are thousands of different proteins in living organisms
B. Enzymes are a type of protein
C. The shape of a protein does not matter, it can change shape and still function
D. Function proteins include protection, movement, structure, and signaling
C. The shape of a protein does not matter, it can change shape and still function
Which of the biological molecules carry genetic information?
A. Carbohydrates
B. Nucleic acids
C. Lipids
D. Proteins
B. Nucleic acids
Substances moving from an area of low concentration to an area of high concentration is an example of which of the following?
A. Simple diffusion
B. Facilitated diffusion
C. Active transport
D. Osmosis
C. Active transport
In what type of solution do plant cells become turgid?
A. Isotonic
B. Hypotonic
C. Hypertonic
D. Hydrotonic
B. Hypotonic
Bacteria have ribosomes, therefore, they are capable of making _____.
A. Lipids
B. Glucose
C. ATP
D. Proteins
D. Proteins
What does hydrolysis refer to?
A. Adding hydrogen atoms to unsaturated fats to make trans fats
B. Using water to make larger molecules from smaller monomers
C. The process of forming hydrogen bonds
D. When water is consumed to break down large molecules into smaller ones
D. When water is consumed to break down large molecules into smaller ones
Which of the following are hydrophobic?
A. Carbohydrates
B. Proteins
C. Lipids
D. Nucleic acids
C. Lipids
