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2 years ago

What happens at each step of a dichotomous key? PLEASE HELP ME!

Biology

1 answer:

Yuki888 [10]2 years ago

5 0

Oh I know this, It narrows down its characteristics here is an example:

The first step in the key will be organized the following way:

1. a. wings covered by an exoskeleton

b. wings not covered by an exoskeleton

Next, the statements need to lead the observer to the next step to narrow the identification further:

1. a. wings covered by an exoskeleton go to step 2

b. wings not covered by an exoskeleton .go to step 3

Step 2 needs to consist of a pair of statements that will allow for the identification of the ladybug and the grasshopper:

2. a. body has a round shape .ladybug

b. body has an elongated shape .grasshopper

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2 years ago

The __ regulates body temperature, thirst, appetite, and water balance.

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The correct answer is B. Hypothalamus.

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3 years ago

Match each scenario to its related biomolecules. Jack is eating a diet that will help him build muscle, so he eats a diet high i

Stells [14]

The options for this question are as follows:

A. Nucleic acids

B. Carbohydrates

C. Fats

D. Proteins

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Jack is eating a diet that will help him build muscle, so he eats a diet high in this. D. Proteins

Explanation: Proteins help to build up the muscles. That's why people who want to do body-building, eat protein rich foods, like chicken, eggs, soy, etc.

Before a race, Ruth drinks a beverage full of this biomolecule to get energy. B. Carbohydrate

Explanation: This biomolecule provides instant energy to our body. For example, glucose is consumed before race, as dissolves quickly in our blood and provides instant energy. Glucose is an example of simplest carbohydrate.

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Elizabeth has been advised to go for genetic screening to detect any abnormalities in her unborn child. A. Nucleic acids

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3 years ago

Atoms react with each other due to the need for

IrinaK [193]

Stability.
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3 years ago

Read 2 more answers