The kidneys filter the blood. Figure 1 shows filtration in the kidney. Glucose molecules are found in the blood plasma and in the filtrate. Protein molecules are only found in the blood plasma. What is the reason for where glucose is found?

The molecules are small enough to pass through the filter

The molecules are too large to pass through the filter

The molecules are too small to pass through the filter

The kidneys filter the blood. Figure 1 shows filtration in the kidney. Glucose molecules are found in the blood plasma and in the filtrate. Protein molecules are only found in the blood plasma. What is the reason for where protein is found?

The molecules are too large to pass through the filter

The molecules are small enough to pass through the filter

The molecules are too small to pass through the filter

(muscles in the iris) contract which reduce size of pupil and reduces (amount of) light entering

(muscles in the iris) relax which reduce size of pupil and reduces (amount of) light entering

(muscles in the iris) contract which increases size of pupil and reduces (amount of) light entering

(muscles in the iris) relax which increases size of pupil and increases (amount of) light entering

Testing people without coffee and with coffee or with different amounts of coffee

Testing people without coffee and with coffee or with different amounts of coffee

Testing people without coffee and with coffee or with different amounts of coffee

Testing people with the same time interval between drinking and testing

Testing people with the same amount of sleep

Testing people without coffee and with coffee or with different amounts of coffee

Repetitions at least two more times and calculate mean value with coffee and without coffee

Ensuring people hold ruler above thumb

Ensure people consume the same type of coffee

Testing people without coffee and with coffee

thyroxine increases metabolic rate

thyroxine increases muscle contraction

A reflex action does not need a sense organ.

A reflex action is a slow action.

Blinking when an insect flies into the eye

Removing the hand from a hot object

Catching a ball in a playground game

Shine light from all sides on the third seedling.

Give no water to the third seedling.

Turn the third seedling so it is upside-down.

Keep each seedling at the same temperature.

Keep each seedling the same height above the floor.

Use the same size cardboard box for each seedling.

to identify / eliminate anomalies

so others can get better results