BIO-103 Chapter test #1RNA is a polymer of ? The digestion of large organic molecules within lysosomes. Which of the following processes occurs in eukaryotic cells, but NOT in prokaryotic cells? The food we eat. As we respire, we release CO2.
Biology Flashcards | Quizlet
RNA is a polymer of ? The digestion of large organic molecules within lysosomes. Which of the following processes occurs in eukaryotic cells, but NOT in prokaryotic cells? The food we eat. As we respire, we release CO2. All organisms share a common genetic code.
Human proteins, such as insulin, can be produced by bacterial cells. Species have a capacity to change over time. Which sequence lists organisms in the order of producer, consumer, and decomposer? One of the kingdoms of Protista. Organisms seem to produce more offspring than the environment can support. Which of the following statements is related to Darwin's theories of evolution by natural selection?
Through years of field observations, researchers have determined that introduction of a new female changes the behavior of a male gorilla. Which of the following is an example of inductive reasoning? A scientist notes that an ornamental grass grown on a berm is taller than the same type of grass grown in a creek bed.
The scientist suspects that this difference is due to water availability. The application of scientific knowledge for some specific purpose. Organisms possessing a genetic code drastically different from that used by humans have been discovered. Which of the following statements is NOT true about discoveries that have been made as a result of comparison of DNA sequences across many species?
Which four elements are the primary components of important biological molecules, such as proteins, fats, and carbohydrates? Which of the following substances is a compound? Are required in very small amounts. Determine hot spots of metabolic activity. Covalent bonds can occur where atoms share one or more pairs of electrons.
Which of the following would form a double covalent bond? The H side of an HCl molecule would have a slight positive charge. In hydrochloric acid HCl , chlorine has greater electronegativity than hydrogen. In ionic bonds, one atom gives up an electron to a second atom. How are ionic bonds formed? Which of the following bonds are arranged from strongest to weakest in a biological system? Chemical reactions do not create or destroy matter but simply rearrange it. Which example is the correct completed equation for this reaction?
When hot, many mammals sweat to control their body temperature. There is less movement of molecules in colder conditions. The hydrogen bonds in liquid water are less stable than in ice. The metabolic processes of the body produce more acids than bases.
The pH of human blood is maintained at around pH 7. Why does a buffer system need to be present in blood to protect against changes in pH due to increases in acids? Carbon skeletons may be arranged in rings.
Which of the following statements about carbon skeletons is true? It consists of an amino group and a carboxyl group. What does the term amino acid signify about the structure of the molecule?
Of the following sugar molecules, which is not a disaccharide? Which of the following foods would contain the most starch? Double bonds are present in the majority of the fats of which of the following foods? Both are important components of cell membranes. What do phospholipids and cholesterol have in common?
When the body uses proteins as fuel, it is breaking down substances vital to its structure and essential functions. When calorie intake is low, proteins are the last resource the body uses for fuel. Which statement below gives the best reason for this? Which condition is irrelevant, to some extent, to the maintenance of protein structure in your body? Secondary structure involves hydrogen bonding between atoms of the polypeptide backbone.
Which statement correctly describes bonds of the secondary structure of proteins? Although most mammals, including humans, are not able to digest the milk sugar, lactose, after infancy, the ancestors of northern and western Europeans relied on dairy products as an important part of their food supply.
When other food sources were in low supply, mutations that allowed the expression of the enzyme lactase to persist past childhood conveyed an advantage to adults who were able to include dairy products in their diet.
Lactase deficiency is more common in Asian, Native American, Mediterranean and some African populations than it is among people with northern or western European ancestry. How would you explain why this is so? The eyepiece of a light microscope has a magnification level of 10x. If you were looking at a paramecium under the lowest-power objective 4x , what would be the total magnification of the microscope at this setting?
If you wished to clearly observe the organelles inside of a white blood cell, which type of microscope would you choose? Which of the following would distinguish a bacterial cell from an animal cell? Which of the following organelles is found only in animal cells and NOT in most plant cells? You have identified a new organism. It has ribosomes, plasmodesmata, and cell walls made of cellulose.
Pancreatic cells produce large amounts of protein. About how many ribosomes would you expect there to be in a pancreatic cell? They are constructed of interrelated membranes. What do the rough endoplasmic reticulum, Golgi apparatus, and lysosomes have in common?
What changes would you expect to see in the liver cells of someone suffering from chronic alcoholism? The protein is folded, then packaged for transport to the Golgi apparatus. How are cell surface proteins exported out of the cell?
The finished products of the Golgi apparatus may leave the cell through vesicles that fuse with the plasma membrane. What is the relationship between the Golgi apparatus and the plasma membrane? Which is a typical function of lysosomes? The cells of a person with adrenoleukodystrophy ALD swell with a buildup of fatty acids.
In other words, fatty acids are not being broken down. Which organelle is most likely failing to function correctly? The plant cell wall provides a more rigid structure.
One function of the central vacuole in plant cells is facilitating cell growth: Animal cells, however, do not grow by this method. What is an essential difference between animal and plant cells that could explain how a plant cell can withstand this expansion of the central vacuole?
Which of the following structures is essential for the successful operation of the endomembrane system?
What mitochondrial feature enhances cellular respiration? Where are chlorophyll molecules located within the chloroplasts? Many researchers think that the first eukaryotic cells obtained energy for life-sustaining functions from organic compounds.
Given this information, which of the following organelles most likely appeared last in eukaryotic cells? Which of the following cytoplasmic structures functions in the transport of vesicles from the endoplasmic reticulum to the Golgi apparatus? Which technique allowed scientists to figure out that all cells, and not just muscle cells, contained actin filaments? A disease called primary ciliary dyskenisia is characterized by abnormal ciliary movements.
In these cilia, microtubule functioning is disrupted due to microtubules missing an essential component. What component of the cell membrane connects signals from the outside of the cell with the inside of the cell and vice versa? Which tissue would likely contain large amounts of anchoring junctions?
Which plant structure is most like gap junctions in animal cells? The plasma membrane would fit into which general function category? Which cell structure is responsible for metabolism? Which of the following are photoautotrophs? Plant cells possess water-splitting enzymes. Hydrogen is a likely candidate in the search for a replacement for petroleum. However, removing hydrogen from water requires the investment of a great deal of energy.