Download App

The Fundamental Unit of Life — Science STD 9 — Question

Rajasthan BoardEnglish MediumSTD 9ScienceThe Fundamental Unit of Life2 Marks
Question
What is active transport?
✓

Answer

Active transport is a process to transport molecules across the membrane against a concentration gradient. Energy is used in the form of ATP.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "Que-Ans (Each of 2 Mark )" from The Fundamental Unit of Life→The Fundamental Unit of Life — all question types→Science STD 9 question papers→Rajasthan Board STD 9 question papers→Rajasthan Board question paper generator→

Similar questions

What volume of ethyl alcohol and water must be mixed together to prepare 250ml of 60% volume by volume solution of alcohol in water.
→
Explain how human ear works in the transmission of sound wave to the brain.
→
Differentiate the following activities on the basis of voluntary (V) or involuntary (IV) muscles.
Pumping of the heart.
→
Why is sound wave called a longitudinal wave?
→
There are 15 protons and 16 neutrons in the nucleus of an element. Calculate its atomic number and mass number.
→
Akhtar, Kiran and Rahul were riding in a motorcar that was moving with a high velocity on an expressway when an insect hit the windshield and got stuck on the windscreen. Akhtar and Kiran started pondering over the situation. Kiran suggested that the insect suffered a greater change in momentum as compared to the change in momentum of the motorcar $($because the change in the velocity of the insect was much more than that of the motorcar$).$ Akhtar said that since the motorcar was moving with a larger velocity, it exerted a larger force on the insect. And as a result the insect died. Rahul while putting an entirely new explanation said that both the motorcar and the insect experienced the same force and a change in their momentum. Comment on these suggestions.
→
What weight of each element is present in $1.5$ moles of sodium sulphite, $Na_2SO_3?$
$($Atomic masses: $Na = 23u; S = 32u; O = 16u)$
→
Is the volume of liquid displaced always equal to the volume of the body immersed in the liquid?
→
A bus starts from the stop and take 50s to get the speed of 10m/s. If the mass of the bus along with passengers is 10000kg, then calculate the force applied by the engine of bus to push the bus at the speed of 10m/s.
→
Do the plant cells contain centriole?
→