lIVING eNVIRONMENT practice 4 (LABZ)

Between starch, glucose, water, and starch indicator, which could NOT pass through an artificial membrane in our lab, because its particles were too big?

• starch
• glucose
• water
• starch indicator

When was this viewed?

• After distilled (pure) water was added
• after salt water was added

Tags

NGSS.MS-PS1-2

These onion cells have lost water from their cytoplasm after a certain procedure has been performed. What has caused the change?

• diffusion
• active transport
• photosynthesis
• cellular respiration

Tags

NGSS.MS-LS1-2

When was this viewed?

• After distilled (pure) water was added.
• After salt water was added

Tags

NGSS.MS-PS1-2

At this stage of the experiment, have either starch or starch indicator passed (noticeably) though the dialysis tubing?

• yes, both
• yes, starch only
• yes, starch indicator only
• no

what does the amber coloring of the fluid indicate?

• glucose has passed through membrane
• starch has passed through membrane
• it proves NO glucose passed through membrane
• it proves NO starch has passed through membrane

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

what does the white coloring inside the artificial cell indicate?

• starch indicator has passed through membrane
• glucose indicator has passed through membrane
• it proves NO glucose indicator passed through membrane
• it proves NO starch indicator has passed through membrane

Tags

NGSS.MS-LS1-2

NGSS.MS-PS1-2

What does the blue black coloring inside the artificial cell indicate?

• starch indicator passed through dialysis membrane
• glucose indicator passed through dialysis membrane
• glucose had a chemical reaction with starch
• someone spilled ink in their "cell"

Tags

NGSS.MS-PS1-2

This procedure proves glucose passed through the dialysis membrane. What was in that test tube?

• glucose indicator, fluid from outside the "cell"
• glucose indicator, sample from inside "cell"
• starch indicator, fluid from outside the "cell"
• starch indicator, sample from inside the "cell"

Tags

NGSS.MS-PS1-2

The test tube was originally blue, but turned orange when heated. How can we interpret this?

• its positive, so glucose passed through the dialysis membrane
•  its positive, so starch passed through the dialysis membrane
•  its negative, so glucose passed through the dialysis membrane
•  its negative, so starch passed through the dialysis membrane

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5