Brownian movement - Study guides, Class notes & Summaries
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DAT BIOLOGY Exam Questions With Verified Answers.
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DAT BIOLOGY Exam Questions With 
Verified Answers. 
Cell Theory: - answer1. all living things are composed of cells 
2. cell is the basic fundamental unit of life 
3. chemical reactions of life take place inside the cell 
4. cells arise from pre-existing cells 
5. cells carry genetic information in the form of DNA - passed from parent to daughter cell 
nucleolus - answer- dense structure in the nucleus where ribosomal RNA synthesis occurs 
Endoplasmic Reticulum - answer- network of membrane- enc...
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ITEC Beauty Specialist - Skincare & Eye Treatments Questions and Answers Already Passed
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ITEC Beauty Specialist - Skincare & Eye 
Treatments Questions and Answers 
 
Already Passed 
 
A birthmark is also known as; Naevae 
 
A moisturizing cream is best suited to what skin type? Mature 
 
A moisturizing lotion contains; 15% oil 
 
A natural astringent Lemon juice 
 
Alpha-tocopherol is the chemical name for; Vitamin E 
 
Ascorbic Acid is the chemical name for; Vitamin C 
 
Atom that gained an electron will become _________ charged negatively 
 
Atom that has donated an electron becom...
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MCB 2000 Already Passed Exam Questions and CORRECT Answers
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Brownian motion the movement of molecules powered by random fluctuations of 
environmental energy 
Brownian motion of what molecule initiates many biochemical interactions? water 
Is water polar or non polar? polar 
Polarity enables what type of. bonding between H2O molecules? hydrogen bonding 
Polarity of water accounts for what? the cohesiveness of water and its ability to 
dissolve many biochemicals. 
Hydrophobic effect Inability of water to dissolve nonpolar molecules 
Electrostatic intera...
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biochemistry 1430 for nurses Midterm Review || Questions and 100% Verified Answers.
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4 key biomolecules of life correct answers proteins, nucleic acids, lipids, and carbohydrates 
 
weak bonds correct answers hydrogen bonds and van der Waals interactions. allow for dynamic interactions and permit energy and information to move about the cell and organism 
 
hydrophobic molecules correct answers fats and steroids in which they repel water, they cannot interact with water at all. 
 
Brownian motion correct answers the chaotic movement of colloidal particles, caused by collision wi...
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Bio 1500 Final Exam (Questions & Answers) Rated 100%
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chloroplasts - -contain the pigment chlorophyll 
-chlorophyll absorbs red, blue, & violet light 
ATP - -used to transport E around cells 
-chemical E stored in the bonds 
-important bonds between 2nd and 3rd phosphate group 
-going to lower energy state breaks bonds and releases the energy 
each molecule during diffusion - -moves randomly 
-behavior unpredictable 
-each individual molecule never stops moving 
dragon fly size - -high O2 levels in carboniferous allowed them to grow big 
-later in ...
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MMBIO 222 quiz #3 Questions with Complete Solutions
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true motility Correct Answer-directed motion of bacteria (energy expenditure by the cell) 
 
brownian movement Correct Answer-random back-and-forth jiggling motion due to collisions of water molecules with the cells (cells don't go anywhere)... results from kinetic energy of molecules around the cell 
 
flagella Correct Answer-long, whip-like structures that extend beyond the surface of the cell and glycocalyx and propel the cell through its environment. Composed of flagellin 
 
serovars Correc...
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MCB 2610 Lab Quiz Questions And Answers Rated A+ New Update Assured Satisfaction
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Coliforms are a subgroup of enteric bacteria classified by their ability to ferment which sugar? - 
lactose 
A Durham tube is included in the LT broth tubes to detect ___, a byproduct of lactose fermentation. - 
gas production 
___ is an enzyme that degrades starch. - Amylase 
___ is an opportunistic pathogen that commonly causes staph infections. - Staphylococcus aureus 
A clear area due to lysis by a phage in a lawn of host cells is called a(n) ____. - Plaque 
A confluent growth of cells in th...
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BOT3015 EXAM 3 Marking Scheme 2024 100% Correct
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BOT3015 EXAM 3 Marking Scheme 
2024 100% Correct 
Brownian movement - Answer- molecules /ions in constant random motion 
Diffusion - Answer- movement of molecules or ions from region of higher concentration 
to region of lower concentration 
Molecules that are moving from a region of higher concentration to a region of lower 
concentration are said to be moving ______________________________ - Answer- 
Along a diffusion gradient 
molecules moving from regions of low to high concentration are sai...
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Bio 1500 (Mizzou) Full Exam With Guaranteed Accurate Answers 2024
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dragon fly size - correct answer -high O2 levels in carboniferous allowed them to grow big 
-later in history predators constrained the max size 
 
O2 levels in atomosphere - correct answer cyanobacteria and green algae chloroplasts contributed.... through photosynthesis 
 
oldest fossils - correct answer 3.5-4 bya 
 
1st insects - correct answer 480 mya 
 
1st dinosaurs - correct answer 240 mya 
 
dinosaurs go extinct - correct answer 66 mya 
 
1st homosapiens - correct answer 200k ya 
 
diffus...
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MICROBIOLOGY LAB 5 2024 QUESTIONS WITH COMPLETE ANSWERS GRADED A+
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MICROBIOLOGY LAB 5 2024 QUESTIONS WITH COMPLETE 
ANSWERS GRADED A+ 
1. When comparing a wet mount preparation to a commercially prepared slide,which of the 
following characteristics of Protozoa is best observed using a wet mount slide preparation?: 
mechanism of motility 
2. What is the purpose of methylcellulose when preparing a wet mount ofprotozoa?: 
Methylcellulose increases the viscosity of the mount. 
3. What structure is used for motility in Euglena?: flagellum 
-part of the motility-b...
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