Which scientist(s) is/are given credit for making the first recorded observations of microorganisms, such as bacteria and protists, with their microscope?

A. Robert Hooke
B. Mathias Schleiden and Theodore Schwann
C. Antony van Leeuwenhoek
D. Louis Pasteur
E. Rudolf Virchow


C. Antony van Leeuwenhoek

Biology & Microbiology

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The part of a membrane protein that extends through the phospholipid bilayer is primarily composed of amino acids that are 

A. highly polar.  B.  negatively charged.  C.  non-polar. D.  positively charged.  E.  water soluble.

Biology & Microbiology

The progesterone receptor (PR) is a steroid hormone receptor and transcription factor. The protein SRC-1, which does not bind DNA by itself, can bind to PR and increase expression of genes regulated by PR. Based on this information, SRC-1 is best described as a(n)  

A.  coactivator. B.  inducer. C.  general transcription factor. D.  specific transcription factor. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about coactivators? Consider Possibilities · Consider the different answer options. Which can you rule out? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Biology & Microbiology

Thermotogae can grow anaerobically on which of the following?

A. Protein digests and carbohydrates B. Cellulose C. Methane and methanol D. Lignin

Biology & Microbiology

The first person to receive gene therapy was a young girl with adenosine deaminase (ADA) deficiency. Outline the therapeutic steps involved

What will be an ideal response?

Biology & Microbiology