Biology help

Which of the following would most likely qualify as a macromolecule?

Protein

Tags

NGSS.MS-LS1-7

Which of the following includes all others on the list?

Carbohydrate

Why?

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

NGSS.MS-LS2-3

The word helix means spiral. What does this tell you about the structure of DNA, which is a double helix molecule?

DNA is a double helix because it has two strands held together like a spiral staircase.

Sodium and potassium are necessary electrolytes. As a result, the human body uses a great deal of energy keeping these electrolytes in balance. Explain why the body needs to use energy for this process.

ATP is required to move sodium ions against their concentration gradient outside the cell.

Why?

Based on the scenario above, the independent variable is:

The type of candle

Why?

Which of the following events in digestion and absorption is incorrect?

Protein is primarily digested in the stomach.

The image below shows a phylogenetic tree that compares many known organisms. Based on the information in this phylogenetic tree, which of the following statements correctly makes a claim about fungi?

Fungi are closer to animals than plants.

Tags

NGSS.MS-LS4-2

the longest. She gathers three different types of candles and lights them all using the same lighter. She then measures the height of the candles in centimeters every 30 seconds and records her data below.

Based on the scenario above, the control variable(s) is (are):

the amount of time that passed during the experiment

A scientist is performing an investigation funded by a company. Which of these would be least likely to produce biased data?

being open minded and honest throughout the research project

Why?

A scientist working in the lab needs to conduct an experiment using 6 flasks and 6 Bunsen burners. She measures 500 mL of water into each flask. After 1 minute the water begins to boil.

Which of the following is an inference?

The Bunsen burners are lit.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4