While T lymphocytes are maturing, each of them develops one of two sets of proteins on their cell surface. These proteins are known as ________ and ________
Fill in the blank(s) with correct word
CD4; CD8 (answers may go in any order)
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Which of the following hypotheses relies on the chemical reaction between hydrogen sulfide (HS2) and iron (Fe) for the built up of a H2 concentration gradient to provide the necessary energy for the reduction of N2 to NH3?
A. Reducing Atmosphere Hypothesis. B. Extraterrestrial Hypothesis. C. Deep-Sea Vent Hypothesis. D. Both Reducing Atmosphere and Extraterrestrial Hypotheses. E. All three hypotheses use this exact reaction to create a chemical gradient to form amino acids.
Match each fungal group with an identifying characteristic.
1. Ascomycetes 2. Cryptomycota 3. Basidiomycetes 4. Microsporidia 5. Zygomycetes 6. Chytrids a. Lack chitnous cell wall b. flagellated reproductive cells c. parasitize animal cells d. black bread mold e. sac fungi f. club fungi
The highly toxic Aspergillus infects
A) wheat. B) bread. C) human skin. D) milk. E) peanuts.
You have been given DNA from a crime scene that needs to be sequenced in order to identify the perpetrator. Which techniques below do you need to carry out to accurately sequence the DNA? (Select all that apply.)A) Different sized fragments of DNA are made ending in the same base.B) Gel electrophoresis separates different sized fragments for each base. C) Blottings of the DNA fragments are stained with a dye.D) Fluorescent tagging for each base reveals a ladder of the sequence.
What will be an ideal response?