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TLS Online TPP Program

#Question id: 2121

Which of the following membrane activities requires energy from ATP hydrolysis?

#Section 2: General Biology

  1. facilitated diffusion of chloride ions across the membrane through a chloride channel

  2. movement of Na+ ions from a lower concentration in a mammalian cell to a higher concentration in the extracellular fluid

  3. movement of glucose molecules into a bacterial cell from a medium containing a higher concentration of glucose than inside the cell

  4. movement of carbon dioxide out of a paramecium

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TLS Online TPP Program

#Question id: 10268

#Section 3: Genetics, Cellular and Molecular Biology

In cats, black coat color is dominant over gray. A female black cat whose mother is gray mates with a gray male. If this female has a litter of six kittens, what is the probability that three will be black?
TLS Online TPP Program

#Question id: 10269

#Section 3: Genetics, Cellular and Molecular Biology

If the probability of being blood-type A is 1/8 and the probability of being blood-type O is 1/2, what is the probability of being either blood-type A or blood-type O?
TLS Online TPP Program

#Question id: 10272

#Section 3: Genetics, Cellular and Molecular Biology

Specific place on a chromosome occupied by an allele
TLS Online TPP Program

#Question id: 10405

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

In some cases phytochrome itself moves to the nucleus in a light-dependent manner. Detection of this movement relied on the ability to fuse phytochrome with,
TLS Online TPP Program

#Question id: 10501

#Section 6: Plant, Animal and Microbial Biotechnology

Which defenses require specific detection systems and signal transduction pathways that can sense the presence of an herbivore or pathogen and alter gene expression and metabolism accordingly
TLS Online TPP Program

#Question id: 10502

#Section 6: Plant, Animal and Microbial Biotechnology

Arabidopsis roots in iron-deficient growth media, thereby facilitating increased iron uptake. The resulting increase in iron content of the plants by