Biology Checkpoint

Which of these would be the best conclusion regarding the experimental results shown?

• The tallest this species of plant will ever grow is 50cm

• The idea temperature for all plant growth is 26

• This species of plant grew best between 18°C and 26°C.

• Plants will not grow above 26°C.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-1

Elias investigates whether soaking beans in water before planting affects how the beans grow. Which beans would MOST likely be the CONTROL group?

• the beans that were soaked the least amount of time

• the beans that were not soaked in water

• the beans that had the greatest mass

• the beans that grew the tallest

Tags

NGSS.MS-LS1-5

The ecological effects of acid rain are often seen in water environments such as streams and lakes. Acid rain flows into streams and lakes or falls directly on aquatic environments. Which hypothesis is MOST likely to test the effects of acid rain on aquatic environments?

• If algal growth increases in a pond, oxygen levels will decrease.

• If runoff increases from agricultural fields, water quality will decrease.

• If waterfowl no longer visit a pond, the population of fish will increase.

• If the pH of a lake decreases to 5.5, the percentage of frogs that hatch will decrease.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Joanne wants to investigate factors that affect different patterns of the flight of bees. Which step in the scientific method must she follow before forming a hypothesis?

• record data of numbers of bees

• measure the distances of bee flights

• draw a conclusion about when bees fly

• gather information about flight patterns

A student states that plants grow taller when grown in natural light than they do in artificial light. Which method is the BEST way to determine if the statement is fact or opinion?

• conduct a controlled experiment

• discuss the statement with other students

• ask several teachers their thoughts

• propose a scientific conclusion

When measuring the volume of an irregularly shaped object, which of the following would be used to obtain the MOST accurate measurement?

• flask

• beaker

• test tube

• graduated cylinder

Which experiment is recording qualitative observations?

• A food supplement is given to a group of mice, and the amount of weight each mouse gains in a month is recorded.

• A group of insects are placed into a dry environment, and the type of movements each insect makes is recorded.

• A group of plants is placed in different types of soil, and the amount of water absorbed in the soil is recorded.

• Fertilizer is placed on a group of plants, and the growth of each plant is recorded.

Which of the following are good safety procedures for a science lab?

• Listen to directions before beginning an experiment.

• Eat a snack while working in the science lab.

• Wear goggles when working on an experiment.

• Use matches to light items that will burn.

• Wear gloves when using chemicals or solutions.

Transpiration of water in plants allows for the movement of water from the roots to the leaves. This process relies on the attraction between water molecules due to which of the following traits:

• specific heat capacity

• polarity

• conductivity

• solubility

Tags

NGSS.MS-ESS2-4

Which property of water allows it to dissolve substances like sodium chloride and glucose but prevents it from dissolving lipids?

• pH

• polarity

• adhesion

• cohesion