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Biol150 Test Questions and Answers Graded A
Prokaryotic cells and eukaryotic cells reproduce by cell division. Regardless of the type of cell, all cells must ____________ before they divide. a. reconstruct their nucleus b. complete mitosis c. separate sister chromatids from one another d. make an exact copy of their genetic information - ANSWERS - Make an exact copy of their gene
- Exam (elaborations)
- • 3 pages •
Prokaryotic cells and eukaryotic cells reproduce by cell division. Regardless of the type of cell, all cells must ____________ before they divide. a. reconstruct their nucleus b. complete mitosis c. separate sister chromatids from one another d. make an exact copy of their genetic information - ANSWERS - Make an exact copy of their gene
BIOL LAB Final Test Questions and Answers Graded A+
Describe the basic process of an ELISA. What binds to what? When you get a positive or negative result from an ELISA, what are you actually seeing? - - + Antigen → primary antibody → secondary antibody → conjugated enzyme --> substrate It also involves an antibody or antigen (immunologic molecules) that may form an antigen-antibody reaction to provide a positive result or, if they do not react, a negative result. Positive control show color blue = substrate binds to conjugate...
- Exam (elaborations)
- • 14 pages •
Describe the basic process of an ELISA. What binds to what? When you get a positive or negative result from an ELISA, what are you actually seeing? - - + Antigen → primary antibody → secondary antibody → conjugated enzyme --> substrate It also involves an antibody or antigen (immunologic molecules) that may form an antigen-antibody reaction to provide a positive result or, if they do not react, a negative result. Positive control show color blue = substrate binds to conjugate...
BIOL Exam 1 Questions and Answers Rated A
A phospholipid has a "head" made up of a glycerol molecule attached to a single ___________, which is attached to another small molecule - ANSWERS - phosphate group Because the phosphate group and its attachments are wither charged or polar, the phospholipid had is _____, which means it has an affinity for wat
- Exam (elaborations)
- • 3 pages •
A phospholipid has a "head" made up of a glycerol molecule attached to a single ___________, which is attached to another small molecule - ANSWERS - phosphate group Because the phosphate group and its attachments are wither charged or polar, the phospholipid had is _____, which means it has an affinity for wat
BIOL CH 14 Test Questions and Answers Graded A
A man who can roll his tongue and a woman who cannot roll her tongue have a son who can roll his tongue (R = can roll tongue; r = can't roll tongue). The son is curious about whether his father is homozygous or heterozygous for the tongue-rolling trait. Which of the following facts would allow him to know? - ANSWERS - His father's mother cannot roll her tongue. In humans, height and skin color have continuous varia
- Exam (elaborations)
- • 6 pages •
A man who can roll his tongue and a woman who cannot roll her tongue have a son who can roll his tongue (R = can roll tongue; r = can't roll tongue). The son is curious about whether his father is homozygous or heterozygous for the tongue-rolling trait. Which of the following facts would allow him to know? - ANSWERS - His father's mother cannot roll her tongue. In humans, height and skin color have continuous varia
BIOL CH 14 Questions and Answers Rated A
A man who can roll his tongue and a woman who cannot roll her tongue have a son who can roll his tongue (R = can roll tongue; r = can't roll tongue). The son is curious about whether his father is homozygous or heterozygous for the tongue-rolling trait. Which of the following facts would allow him to know? - ANSWERS - His father's mother cannot roll her tongue. In humans, height and skin color have continuous variation
- Exam (elaborations)
- • 6 pages •
A man who can roll his tongue and a woman who cannot roll her tongue have a son who can roll his tongue (R = can roll tongue; r = can't roll tongue). The son is curious about whether his father is homozygous or heterozygous for the tongue-rolling trait. Which of the following facts would allow him to know? - ANSWERS - His father's mother cannot roll her tongue. In humans, height and skin color have continuous variation
BIOL 3025 Test Questions and Answers Graded A
The lac operon is expressed when A) glucose is high and lactose is absent. B) glucose is low and lactose is absent. C) glucose is low, regardless of the presence or absence of lactose. D) glucose is high and lactose is present. E) glucose is low and lactose is present. - ANSWERS - E When in a complex with ________, the CAP protein binds to the CAP site and ________ the expres
- Exam (elaborations)
- • 14 pages •
The lac operon is expressed when A) glucose is high and lactose is absent. B) glucose is low and lactose is absent. C) glucose is low, regardless of the presence or absence of lactose. D) glucose is high and lactose is present. E) glucose is low and lactose is present. - ANSWERS - E When in a complex with ________, the CAP protein binds to the CAP site and ________ the expres
BIOL 2401 CH4 Test Questions and Answers Graded A
In a neuron, if the sodium-potassium pump was absent, the concentration gradients for sodium and potassium would dissipate T/F - - True Place a single word into each sentence to make it correct and then place each sentence into a logical paragraph order. Not all terms will be used. - - -Osmosis is the net flow of water from one side of a selectively permeable membrane
- Exam (elaborations)
- • 3 pages •
In a neuron, if the sodium-potassium pump was absent, the concentration gradients for sodium and potassium would dissipate T/F - - True Place a single word into each sentence to make it correct and then place each sentence into a logical paragraph order. Not all terms will be used. - - -Osmosis is the net flow of water from one side of a selectively permeable membrane
BIOL 1362H: Chapter 17 Test Questions and Answers Rated A
Which of the following statements are true? A. Some codons are recognized by proteins, not by tRNAs. B. There are 64 different tRNAtRNAs that read the 64 possible codons. C. Wobble pairing accounts for the redundancy of the genetic code. D. All possible codons are used, but not all codons specify an amino acid. - ANSWERS - A. Some codons are recognized by
- Exam (elaborations)
- • 4 pages •
Which of the following statements are true? A. Some codons are recognized by proteins, not by tRNAs. B. There are 64 different tRNAtRNAs that read the 64 possible codons. C. Wobble pairing accounts for the redundancy of the genetic code. D. All possible codons are used, but not all codons specify an amino acid. - ANSWERS - A. Some codons are recognized by
BIOL 1107K Chapter 16 Questions and Answers Rated A
True or false? DNA is usually double-stranded, whereas RNA is usually single-stranded. - ANSWERS - True What are the three components of nucleotides? - ANSWERS - A pentose sugar A nitrogenous base A phospha
- Exam (elaborations)
- • 5 pages •
True or false? DNA is usually double-stranded, whereas RNA is usually single-stranded. - ANSWERS - True What are the three components of nucleotides? - ANSWERS - A pentose sugar A nitrogenous base A phospha
BIOL 1090 Final Exam Test Questions and Answers Rated A
~3 billion years ago the Earths atmosphere was composed of - - nitrogen, ammonia, methane, carbon dioxide, water and hydrogen gas Lifes' organic building blocks were formed when - - lightning bolts fuelled reactions that changed
- Exam (elaborations)
- • 11 pages •
~3 billion years ago the Earths atmosphere was composed of - - nitrogen, ammonia, methane, carbon dioxide, water and hydrogen gas Lifes' organic building blocks were formed when - - lightning bolts fuelled reactions that changed
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