subject
Biology, 20.10.2019 04:00 lilygonzalez43

Current evidence indicates that the process of photosynthesis arose more than three billion years ago. its origin had a huge impact on existing organisms and on the physical characteristics of the biosphere. which major physical change could be attributed to photosynthesis?

ansver
Answers: 3

Another question on Biology

question
Biology, 20.06.2019 18:04
M! (1). what are the inputs and the outputs for cellular respiration? (2). what is the primary source of energy for cellular respiration?
Answers: 2
question
Biology, 21.06.2019 20:00
In terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants are most similar to a ) moss sporophyteb) moss gametophyte bearing both male and female gametangiac) fern sporophyted) fern gametophyte bearing only antheridia
Answers: 1
question
Biology, 21.06.2019 20:00
You have been asked to lead a demonstration for the undergraduate microbiology lab course about the uses of negative staining when studying bacteria. a "negative" stain does not stain the bacterial cell itself but stains the space between cells. under magnification, the acidic (negativelycharged) nature of the stain will be repelled by the negatively charged bacterial cell wall and willleave the cell colorless in a stained background. negative stains are used primarily to reveal the presence of negatively charged bacterial capsules; therefore, they are also called capsule stains. encapsulated cells appear to have a halo surrounding them. the negative stain procedure does not require heat fixation, which limits any chances of alteration in bacterial cell shape and size. the bacterial suspension is added to a drop of stain, such as nigrosin or eosin, and drawn across the glass slide using a coverslip.nigrosin staining-not safranin staining-of klebsiella pneumoniae will allow for the visualization of the cell shape and the determination of the presence of a capsule.true/false
Answers: 1
question
Biology, 21.06.2019 22:30
Check all that apply diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? 1.the shells make up the diatomaceous earth used in filters 2.it can be used as an ingredient in abrasives 3.they are used in food products 4.the shells can be used in some insulating materials
Answers: 2
You know the right answer?
Current evidence indicates that the process of photosynthesis arose more than three billion years ag...
Questions
question
Advanced Placement (AP), 28.03.2020 01:58
question
Mathematics, 28.03.2020 01:58
question
Mathematics, 28.03.2020 01:58
question
English, 28.03.2020 01:58
Questions on the website: 13722367