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sample questions
BIO 111 CHAPTERS 1-3
| Question | Answer |
|---|---|
| To maintain a constant internal environment? | Homeostasis |
| The study of tissues? | Histology |
| Level of organization more complex than tissues? | Organs |
| Body system involved with signaling other body parts with hormones? | Endocrine |
| Body system that moves body parts and generates most of our body heat ? | Muscular |
| Body system that breaks down food into smaller substances that are easily absorbed by the body? | Digestive |
| Body system that acts as a physical barrier to pathogens, chemicals, the sun, and water loss? | Integumentary |
| Mechanism that corrects a disturbance back to a set point? | Negative feedback |
| Example of positive feedback | Answer=NONE OF THE ABOVE (Regulation of body temp, regulation of blood glucose, all of the above. ) |
| Example of positive feedback | Answer= ALL OF THE ABOVE (Alcohol consumption, birthing process, none of the above) |
| Region of the body known as the neck | Cervical |
| Region of the body known as the foot | Pedal |
| Region of the body known as the front (bend) of the elbow? | Antecubital |
| System of the body where our personality comes from and where memory is stored ? | Nervous |
| The brain is ------ to the heart.? | Superior |
| positively charged subatomic particles: | Protons |
| Subatomic particle that orbits the nucleus | electrons |
| The strongest chemical bond | covalent |
| The chemical bond between water molecules | Hydrogen |
| The body is made mostly of ? | CHON (CARBON, HYDROGEN, OXYGEN, NITROGEN ) |
| When atoms join together they make ? | Molecules |
| The 2nd strongest bond? | Ionic bond |
| A solution of body fluid from a patient has a PH of 10.0 This solution is considered: | Basic |
| Helps speed a chemical reaction, but is not used up by the reaction: | Enzymes |
| Building blocks (monomers) of carbohydrates; | monosaccharides |
| Building blocks (monomers) of nucleic acids: | nucleotides |
| Breaking down a protein into amino acids: | Decomposition |
| A body solution was tested and found to be PH 2.0, this body solution is said to be: | Acidic |
| NOT a lipid | answer=Sucrose (cholesterol, sucrose, triglyceride, phospholipid) |
| Good energy sources: | Answer=All of the above (Carbohydrates, lipids, all of the above, none of the above ) |
| The sequence of ( BLANK) determines the shape of a protein: | Amino acids |
| The ( BLANK) of a protein determines its ( BLANK) . | shape; function |
| Examples of nucleic acids: | Answer= ALL OF THE ABOVE (DNA, RNA, all of the above, none of the above) |
| DNA stores the instructions on how to make: | Answer= ALL OF THE ABOVE ( proteins, DNA, all of the above, none of the above |
| Major macromolecule that stores our genetic information: | Answer= NONE OF THE ABOVE ( carbohydrates, lipids, all of the above, none of the above). |
| The cell membrane is made mostly of: | Phospholipid |
| The plasma membrane is said to be: | Selectively permeable |
| Type of transport that requires direct use of ATP | Active transport |
| Type of PASSIVE transport that requires a carrier or channel protein: | facilitated diffusion |
| The diffusion of water : | Osmosis |
| When a cell is placed in HYPERtonic solution, we can expect it to : | Shrink and shrivel |
| The "powerhouse" of the cell because it generates alot of ATP: | Mitochondria |
| The "control center" of the cell because it contains our DNA ( genetic information) | Nucleus |
| Organelle that creates the mitotic spindle: | Centrosome |
| Organelle that is essentially an enzyme for protein synthesis | Ribosome |
| Organelle that contains enzymes that make lipids and carbohydrates and can detoxify certain poisons, drugs, and toxins | Smooth endoplasmic reticulum |
| Phase of the cell cycle when our DNA is duplicated | Interphase |
| Phase of mitosis when the nuclear envelope reappears and chromosomes unwind into chromatin | Telophase |
| Phase of mitosis where the centromeres break and chromosomes migrate AWAY from each other | Anaphase |
| DNA + Protein | Chromatin |
| Highly compact Chromatin : | Chromosome |
| What is osmosis? | osmosis is the diffusion of water across a selectively permeable membrane. |
| Selectively permeable membrane= | only allows for some substances to cross it and doesn't allow other substances to cross it. |
| What happens to a cells during Apoptosis? | a regular process of death of the cell that occurs in the body where the cell itself takes part in the death (cell suicide) |
| What happens to cells during necrosis? | is a cellular process of death occurring when the cells are highly exposed to extreme external conditions (unplanned cell death) |
| What are the levels or organization simplest to most complex? | subatomic Atoms Macromolecules Organelles cells tissues organs organ systems organisms |
| Subatomic particles | =pieces that come together to form an atom (protons, neutrons, electrons) |
| Atoms | Small whole unit of an element (hydrogen) |
| Molecules | 2 or more atoms that are chemically connected to each other (water ) |
| Macromolecules | Very large molecules (proteins) |
| organelles | The organs of a cell ( mitochondria ) |
| cells | The smallest whole unit of life (myocyte neuron) |
| tissues | A group of cells working together (epitheleal) |
| organs | A group of tissues working together ( heart and liver ) |
| organ systems | A group of organs working together (cardiovascular system) |
| organisms | One living thing, example ( plant animal, fungi) most complex |
| Why can some atoms of the same element have different mass numbers ? | This is because the number of neutrons can differ Atoms of the same element that have different # of neutrons , thus different mass # called isotopes. |
| How do you find the atomic mass? | Protons+neutrons=ATOMIC MASS |
| How do you find the atomic number ? | Proton number or the number of protons |
| If an atom has 17 electrons , 17 protons and 18 neutrons. what is the atomic number, and atomic mass ? | ATOMIC NUMBER=17 ATOMIC MASS=35 |
| How many electrons would you put in each shell? | Shell 1: 2in and can hold 2 Shell 2: 8 in and can hold 8 Shell 3 : 7 in and can hold 8 |
| What happens to a solution as the hydrogen ion (H+) concentration increases or decreases? | As the concentration of (H+) increases, a solution becomes more acidic and the PH value decreases. |
| What are the ranges of the PH scale ? | 0-14 |
| PH of 7 | Neutral |
| PH below 7 | acidic |
| PH above 7 | Basic |
| Stages of mitosis | Prophase, metaphase, anaphase, telophase |
| Prophase | Chromosomes become visible , nucleus is breaking down. |
| metaphase | Chromosomes meet in the middle of the cell. |
| anaphase | Chromosomes split apart and go to opposite ( away ) sides of the cell. |
| telophase | The cell begins to split into 2 sister cells. |
| What are the differences between DNA and RNA? | DNA ( Double strand, long lasting molecule, takes longer to make, in the NUCLEUS, uses ATGC. RNA ( Single strand, short lasting molecule, takes shorter to create, outside the nucleus, uses AUGC. |
Created by:
cristinag495
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