Table 102

I $\quad$ 1 Acid from Glucose $\quad$ $\quad$

question 28

Multiple Choice

Table 10.2

I. Gram-positive
A. Catalase+
$\quad$ 1. Acid from glucose. $\quad$$\quad$$\quad$ Staphylococcus
$\quad$ 2. Glucose $\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$ Micrococcus
B. Catalase-
$\quad$ 1. Coccus. $\quad$$\quad$$\quad$ Streptococcus
$\quad$ 2. Rod. $\quad$$\quad$$\quad$$\quad$ Lactobacillus

II. Gram-negative
A. Oxidase-
1. Acid from lactose
$\quad$ a. Uses citric acid. $\quad$$\quad$$\quad$ Citrobacter
$\quad$ b. Citric acid $\quad$$\quad$$\quad$$\quad$$\quad$ Escherichia
2. Lactose-
a. $\mathrm{H}_{2} \mathrm{~S}$ produced
$\quad$ (1) Urease positive. $\quad$$\quad$$\quad$$\quad$ Proteus
$\quad$ (2) Urease negative $\quad$$\quad$$\quad$$\quad$ Salmonella
B. Oxidase+
1. Rod. $\quad$$\quad$$\quad$$\quad$$\quad$ Pseudomonas
2. Coccus $\quad$$\quad$$\quad$$\quad$ Neisseria
-Use the dichotomous key in Table 10.2 to identify a gram- negative rod that ferments lactose and uses citric acid as its sole carbon source.

• A) Staphylococcus
• B) Escherichia
• C) Citrobacter
• D) Pseudomonas
• E) Lactobacillus

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Definitions:

Root Hair Plexuses

Nerve fiber networks found in the dermal layer of the skin that allow for the sensation of touch in hair-covered skin.

Baroreceptors

Sensory nerve endings in the cardiovascular system sensitive to blood pressure changes, helping in reflex control of the blood pressure.

Proprioceptors

Sensory receptors found in muscles, tendons, and joints that provide information about body position and movement.

Muscle Spindles

Sensory receptors within the belly of a muscle that detect changes in muscle length, informing the central nervous system to maintain muscle tone and posture.