1) A theory is:
a. an idea that has been proven
b. an explanation of an idea that is broad in scope and has multiple lines of evidence
c. a belief that has been accepted by all scientists as fact
d. a concept in the early stages that still needs to be tested
e. a description of a belief that inbokes the supernatural
2) Some deep-sea bacterica live near submerged volcanoes and make their own food using energy derived from minerals coming from the volcanoes. These bacteria would be classified as:
a. no living
b. heterotrophic
c. autothrophic
d. photosynthetic
3) Which four elements make up approximately 96% of living matter?
a. carbon, sodium, chlorine, magnesium
b. carbon, sulfur, phosphorus, hydrogen
c. carbon, oxygen, sulfur, calcium
d. oxygen, hydrogen, calcium, sodium
e. carbon, hydrogen, aluminium, oxygen
4) All members of which of the following groups have the greatest number of characteristics in common?
a. class
b. family
c. genus
d. phylum
e. order
5) The fluid mosaic model describes membranes as fluid because _________.
a. the phospholipids and proteins move around within the bilayer
b. the phospholipid molecules are bonded to one another, making them more moveable
c. the phospholipids of membranes are constantly moving from one layer to the other layer
d. the phospholipids move from place to place around the motionless member proteins
e. the membrane is composed mainly of water
Kindly help me with these questions please, much appreciated (:
Originally posted by Reuben David:1) A theory is:
a. an idea that has been proven
b. an explanation of an idea that is broad in scope and has multiple lines of evidence
c. a belief that has been accepted by all scientists as fact
d. a concept in the early stages that still needs to be tested
e. a description of a belief that inbokes the supernatural
2) Some deep-sea bacterica live near submerged volcanoes and make their own food using energy derived from minerals coming from the volcanoes. These bacteria would be classified as:
a. no living
b. heterotrophic
c. autothrophic
d. photosynthetic
3) Which four elements make up approximately 96% of living matter?
a. carbon, sodium, chlorine, magnesium
b. carbon, sulfur, phosphorus, hydrogen
c. carbon, oxygen, sulfur, calcium
d. oxygen, hydrogen, calcium, sodium
e. carbon, hydrogen, aluminium, oxygen
4) All members of which of the following groups have the greatest number of characteristics in common?
a. class
b. family
c. genus
d. phylum
e. order
5) The fluid mosaic model describes membranes as fluid because _________.
a. the phospholipids and proteins move around within the bilayer
b. the phospholipid molecules are bonded to one another, making them more moveable
c. the phospholipids of membranes are constantly moving from one layer to the other layer
d. the phospholipids move from place to place around the motionless member proteins
e. the membrane is composed mainly of water
Kindly help me with these questions please, much appreciated (:
1 - d
2 - c
3 - either b or c (the most abundant are C, H, O & N, followed by S, P & Ca), not a very fair question.
4 - either d or c (Kings Play Chess On Fine Green Silk), depending on how you interpret the question.
5 - a
Question 1, my take is option (c). I think option (d) is more towards hypothesis.
If you speak to a science person, a theory means a concept that is widely adopted. If I talk to my mum, she will think theory is something that I anyhow make up.
Question 3. My take is Option (e) because of the C, H, O in the option.
Question 4. For me, I use the SGFOCPK
towards K, most number of organism.
towards S, most number similarities.
I choose option (c), Genus.
Best Regards,
Chin Seng
Homework Forum Moderator
Originally posted by Darkness_hacker99:Question 3. My take is Option (e) because of the C, H, O in the option.
On the basis of C, H, O, your rationale is certainly reasonable. I'd still be reluctant to select (e), on the basis that aluminium is not only *not* required by any form of biological life on Earth, but is actually considered toxic to biological life (in humans, "aluminium has been implicated as a factor in Alzheimer's disease" see Wikipedia).
Accordingly, good people, I'd suggest you not wrap your food in aluminium foil (eg. avoid barbequed foods that use aluminium foil).
2. Autotrophic as it is producing their own food, these are deep sea vents which can be called chemoautotrophs
3. Refer to a phylogenetic tree
5. Lateral and transverse movements of phospholipids