The reduction of NAD+ to NADH (and H+) occurs both in the ________ and in the ________ of the ________.

Fill in the blank(s) with the appropriate word(s).


cytoplasm; matrix; mitochondria

Biology & Microbiology

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The simplest eye structure, which is able to perceive light but not form an image, is called a(n) ____

a. compound eye b. single-lens eye c. ocellus d. ommatidia e. photoreceptor

Biology & Microbiology

You are a genetic counselor, and a couple comes to you with concerns that if they have a child

together it could have hemophilia. The man has an X-linked recessive form of hemophilia, but the woman does not. Genetic tests reveal the woman is not a carrier for hemophilia. Which of the following would be a correct thing to tell them?

a. Any child that they produce will have a 50% chance of having hemophilia. b. All of their male offspring will have hemophilia, and each of their female offspring will have a 50% chance of having hemophilia. c. None of their offspring should have hemophilia, but all of their female offspring will be carriers for hemophilia. d. Each of their male offspring will have a 50% chance of having hemophilia, and while their female offspring should not have hemophilia, they will each have a 50% chance of being carriers. e. All of their male offspring will have hemophilia, and while their female offspring should not have hemophilia, they will all be carriers.

Biology & Microbiology

Four of the five answers listed below possess

some type of coelom. Select the EXCEPTION.

a. crustaceans b. annelids c. arthropods d. mollusks e. cnidarians

Biology & Microbiology

What is the first step in the pressure flow mechanism of translocation?

A) Sugar is loaded into the xylem at the source. B) Sugar is loaded into the phloem at the source. C) Water is loaded into the phloem at the source. D) Water is loaded into the phloem at the sink.

Biology & Microbiology