Classrep2

transport proteins - ANSWERare responsible for controlling passage across the membrane fluid mosaic model - ANSWERThe membrane is a mosaic of protein molecules bobbing in a fluid bilayer of phospholipids fatty acid tails - ANSWERnonpolar, hydrophobic fatty acid heads - ANSWERhydrophilic, polar periphial proteins - ANSWERbound to the surface of the membrane integral proteins - ANSWERpenetrate the hydrophobic core (ones that span the membrane are transmembrane protiens How do cel...

the units of heredity and are made up of segments of DNA - ANSWERgenes each pair of homologous chromosomes includes... - ANSWERone chromosome from each parent what does meiosis result in - ANSWER4 haploid daughter cells what does meiosis 1 do - ANSWERseparates homologous chromosomes when does crossing over and synapsis occur - ANSWERprophase 1 how many chromosomes do humans have in the nucleus of their somatic cells? - ANSWER46 chromosomes (23 pairs) the two chromosomes in each...

Chemical Reaction - ANSWERoccurs anytime when two or more atoms, ions, or molecules collide in such a way that they produce a new substance Which of these is exhibiting kinetic energy? A. A rock on a mountain ledge B. A space station orbiting Earth C. A person sitting on a couch while watching TV D. An archer with a flexed bow E. The high-energy phosphate bonds of a molecule of ATP - ANSWERB. A space station orbiting Earth Kinetic energy is energy of motion. What is the First Law...

about ______ million species have been named and identifies - ANSWER1.8 million species -with so many different species there are many similarities evolution is a _____ theme in biology - ANSWERcentral the ability to evolve is built into organisms - ANSWER-organisms within a species are variable (e.g., some are tall some are short) -variability means some are better suited to survival. -variability comes from the genes and genes are inherited. conclusion: more "good genes are inh...

True or False: The purpose of mitosis is to insure that daughter cells have identical genetic information at the mother cell. - ANSWERtrue How many centromeres are there per chromosome? - ANSWER1 How many centrosomes per chromosome consist of 2 sister chromatids? - ANSWER1 When is DNA replicated? - ANSWERS phase When are sister chromatids separated? - ANSWERAnaphase I If the DNA content in G2 is X, what is the DNA content of each daughter cell at Telophase? - ANSWER0.5X If the ...

What determines if a molecule can move through a cell membrane and which can't? - ANSWERDetermined by solubility Are all carbons polar or non- polar? - ANSWERNon Polar What is the mass and charge of a proton? - ANSWERmass- 1 Dalton Charge- +1 What kind of solvent is H2O? - ANSWERpolar solvent Is an ionic compound polar or non- polar? - ANSWERPolar Are compounds that are held together with a pure covalent bond polar or non polar? - ANSWERPurely non- polar What kind of bond...

tissues - ANSWERAn organ, such as the liver, is composed of ____. C - ANSWERWhich of these is an organ system? A. stomach B. mucosa C. digestive D. gamete two - ANSWEROrgans are composed of ___ or more different tissues. stomach and small intestine - ANSWERThe digestive system is composed of structures such as the.... prokaryotes and eukaryotes - ANSWERWhat are the two main types of cells? nucleus; organelles - ANSWERProkaryotic cells lack the ___ and other ___ found in euk...

What is another name for cell to cell communication? a. signal transition b. signal transduction c. signal translation d. signal transference e. all of the above - ANSWERb. signal transduction Paracrine signaling is when: a. signal molecules pass through gap junctions to neighboring cells b. signal molecules pass through the bloodstream to other cells c. signal molecules cause two separate cells to fuse d. signal molecules pass from one cell to a nearby cell e. all of the above - AN...

Which of the following is a characteristic of living things? (Ch 1) - ANSWERability to replicate Studying climate change is an example of: (Ch 1) - ANSWERsystems biology Which of the following is NOT an emergent property? (Ch 1) - ANSWERhumans can make music The primary source of almost all energy for living beings is (Ch 1) - ANSWERthe sun The cell theory says: (Ch 1) - ANSWERcells are the smallest unit of living matter Your hand can grab things. This is an example of: (Ch 1) - A...

A farmer temporarily installs produce coolers in a leased farm stand in order to prevent spoilage. The coolers would be considered which of the following? A. Trade fixtures that are real property. B. Trade fixtures that are personal property. C. Temporary real property. D. Emblements. - ANSWERTrade fixtures that are personal property. Property can be converted from real to personal property and from personal property to real property by means of which processes, respectively? a...