How do nerve cells form different types of tissues? a. a group of these cells perform similar functions and become nerve tissue after messages from the brain tell nerve cells how to develop and perform special functions. b. a group of these tissues perform similar functions and become nerve organs after messages from the heart tell nerve cells to develop and perform special functions. c. a group of these cells perform similar functions and become nerve tissue after information in the dna of the nucleus tells the nerve cells to develop and perform special functions.

Nucleic acid certain protein cell membranes certain carbohydrates

'which of these statements about the scientific method is not true? all experiments must follow the same number of steps in the procedure. experiments may be repeated several times. some unexpected results can be beneficial. experimental results may or may not support the hypothesis.

Use this dichotomous key for insect identification to identify the insect shown. 1. a. insect has one pair of wings. order diptera b. insect has two pairs of wings. go to #2 2. a. front wings thicker in texture than hind wings go to #3. b. front and hind wings are same texture throughout. go to #4 3. a. front wings are short order dermaptera b. front wings cover entire abdomen order coleoptera 4. a. wings with scale on all parts of their area. order lepidoptera b. wings without scales go to #5. 5. a. hind wings smaller than front wings. order ephemeroptera b. front and hind wings nearly equal in size. order odonata the insect pictured is in the order diptera. ephemeroptera. coleoptera. odonata.