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goldfiish [28.3K]
3 years ago
9

I need help please. (30 points

Biology
1 answer:
sukhopar [10]3 years ago
5 0
The mass of the sample would be 90 grams
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Helpppp !!!!!!! Plis
DochEvi [55]

Answer:

Sample 4.

Explanation:

Oxygen is very important for life, so this should be present.

4 0
2 years ago
Which process occurs during the light-dependent reactions in photosynthesis?
kobusy [5.1K]

Answer:

A. Water molecules are split.

Explanation:

The light dependent reactions of photosynthesis require the energy in sunlight to proceed. Structures called photosystems which contain chlorophyll absorb the light from the sun to generate excited electrons, which are transferred to electron carriers ATP and NADH.

These electron carriers are used in the light-independent reactions of photosynthesis.

During this process,  the high energy electrons are passed to an acceptor molecule and replaced with an electron from water. This splitting of water produces H+ ions and oxygen as a byproduct. The splitting of water is called photolysis

3 0
2 years ago
Stuart is studying weather data for his region. The data was gathered from 1950 to 2016. Which observation would provide the STR
marusya05 [52]

Answer:

A

Explanation:

The climate of a region is determined through the observation of weather patterns over a long time- usually at least 15 years-  in a region. Studying climate change would therefore also take very long time as meteorologists attempt to perceive changes in these weather patterns. In this case 30 years can be enough to notice a significant increase in rainfall patterns which can be classified as climate change.

7 0
3 years ago
Ribosomal RNA is produced in the cytoplasm. <br> true or false
WINSTONCH [101]
False 
it's made in the nucleus 
3 0
3 years ago
What is not a principle of the cell theory
Vlad [161]

The cell theory consists of:

1. all living organisms are made up of cells

2. cells are the basic structural/organizational unit of all organisms

3. all cells come from pre-existing cells

8 0
2 years ago
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