PART C: DATA ANALYSIS Learners wanted to investigate the effect of different antibioties on the
growth of certain bacterial species. They set up nutrient agar plates as
shown below. They placed sterile discs containing three different
antibiotics on each of the plates.
4
-Teel
clown
Anthetic 1
Antti
1. State a hypothesis for the investigation
(2)
-Filan
Reproo
2. What is an antbloc?
is a type of antimicrobial substance active
against bacterie
10-09
3. What is the function of agar plates?
(2)
yra
y ever
living
4. Mention one precaution that the learners would have taken to
ensure that their results were valid
(2)
O, N₂
5. State the dependent variable
(3)​

You arrive late to a biological seminar. however, just as you enter the room, you hear the speaker referring to the "five-prime end" and the "three-prime end" of a macromolecule. immediately, you know that they are talking about a: ]

On a recent expedition to a remote region of northern canada, scientists uncovered skeletal remains from about 100,000 years ago. surprisingly, all the skeletal remains, which included many species from differing biological families and spanned about two thousand years, showed evidence of experiencing temperatures in excess of 1000 degrees fahrenheit (or 538 degrees celsius). which of the following, if true, best explains the apparent paradox between the cold environment and the evidence of the bones experiencing hot temperatures? (a) chemical changes that naturally occur during the process of decay in only one north canadian species produce the same evidence of the species' skeletons being exposed to hot temperatures as the expedition scientists found. (b) a little over 103,000 years ago, a large fire is known to have occurred in northern canada. (c) strong evidence exists that as early as 70,000 years ago, homo sapiens around the world relied heavily on fire to cook animals. (d) in the same expedition and in roughly the same layer of excavation, scientists found rudimentary wood cutting and hunting tools used by early humans.

The open ocean of any depth is called the