What are connexons - Study guides, Class notes & Summaries

bios 1300 exam 2| 2023 complete study guide histology - study of tissues and how they are arranged in organs cell junctions - connections between two cells tight junctions - good for tissues that act as barriers desmosome - very strong and help tissues resist stretching gap junction - fairly weak, but great for allowing cells to communicate quickly tight junctions - linkage between two adjacent cells by transmembrane cell-adhesion proteins and makes it difficult for substances to p...

BIOS 251 Week 4 Case Study: Tissue – Graded An A+ Describe the five different layers of the skin. The five layers of the skin are known as the epidermis, which is divided further into five different layers. The layers are stratum corneum, stratum lucidum, spinosum, granulosum, and stratum basale. All five of these layers contain different characteristics and responsibilities for the skin. - Stratum corneum is the most superficial layer and is the one that is visible, so ...

Lego bricks of life case Questions and Answers final exam 2024 What are the 4 different processes involved in aerobic respiration? 1. Glycolysis 2. Link reaction 3. Krebs cycle 4. Electron transport chain Describe the Krebs cycle: - In matrix 1. Acetyl CoA (2C) combined with a 4C compound to make a 6C compound 2. After a serious of redox reactions, the 6C compound is converted back into a 4C compound + CO2 Products: 1ATP + CO2 + 3NADH + 1 FADH Describe the process of glycolysis: - ...

Bio ch. 3, 4, and 5 test Review 79 Questions with Verified Answers Chromosomes contain two chromatids after S-phase. True or False - CORRECT ANSWER True DNA is replicated during which phase of the Cell Cycle? G2-Phase S-Phase Mitotic-Phase All of the answer choices are correct - CORRECT ANSWER S-phase In the below image, look carefully at the structure labeled C. What happens to it during anaphase in somatic cell division? the entire structure goes into one of the new cells being ...

Why are there motor proteins associated with both actin filaments and microtubules but not intermediate filaments? - ANSWER Actin filaments and microtubules are highly polarized, therefore allowing motor proteins to form associations with them. Intermediate filaments are unpolarized and do not bind nucleotides such as ATP, leading to lack of motor protein associations (which are ATP driven). How does the hydrolysis of ATP cause myosin to move along the actin filament? - ANSWER ATP hydrolysis ...

Which of the following is NOT a function of proteins? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a Information storage b Catalysis c Transport of solutes d Muscle contraction - answer-a Sucrase is the enzyme that breaks down sucrose into glucose and fructose. Using your new knowledge of enzymes, what other reactions would you expect to be catalyzed by sucrase? Select an answer and submit. For keyboard navigation, use the up/...

Electrical Activity of the HeartWhat is an action potential? - correct answer Rapid change in the transmembrane potential followed by a return to the resting membrane potential When do changes in transmembrane potential occur? - correct answer During changes in the permeability of the cell membrane to intracellular and extracellular ions Is the duration of APs in cardiac cells shorter or longer than in nerves cells or skeletal/smooth muscle? - correct answer Much longer What is the effe...

__________ is the metabolic pathway that synthesizes glycogen. - answer-Glycogenesis 3 types of phenotypic plasticity - answer-Acclimation, acclimatization, and polyphenism 5 main forms of energy - answer-1. Radiant energy 2. Mechanical energy 3. Electrical energy 4. Thermal energy 5. Chemical energy A cell will most likely hyperpolarize when __________ enters it. - answer-Cl- A chemical is termed a neurohormone when it is - answer-Released by a neuron, but travels in the blood l...

Pol III is a type of enzyme that synthesizes transfer RNA (tRNA). You would expect this enzyme to form: correct answers phosphodiester bonds between adjacent ribose molecules You would expect DNA in mitochondria to be correct answers circular between the time when pre mRNA is generated and when introns are removed from it, a type of RNA called SnoRNA adds a methyl group to some bases in the pre mRNA. From what you know about RNA processing, you would expect these enzymes to function in the...

Ribosome Ans- Which of the following is NOT one of the three major components of a typical eukaryotic cell? a) Cytoplasm b) Ribosome c) Plasma Membrane d) Nucleus Lysosome Ans- Which of the following acts as the digestive system of the cell, breaking down materials? a) Ribosome b) Nucleus c) Lysosome d) Endoplasmic Reticulum In the DNA within the cell's nucleus Ans- Where in a typical eukaryote cell would you expect to find genes? a) In chromosomes within the cytosol b) In the DN...