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Lena [83]
3 years ago
7

Which step is the beginning of photosynthesis?

Biology
2 answers:
slega [8]3 years ago
6 0

Answer:

Photosynthesis starts when chlorophyll absorbs energy from sunlight.

SpyIntel [72]3 years ago
3 0

Answer:

light dependant reactions

Explanation:

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Information gathered from observing a plant grow 3 cm over a two-week period is called
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3 0
3 years ago
Hydrogen bonds give water which of the following properties? 1. high pH low pH the ability to resist temperature changes 2. the
Furkat [3]

Answer:

3. into ice, which is denser than liquid water.

Explanation:

Water molecules are held together by hydrogen bonds. The bonding is usually between the hydrogen atoms of one water molecules, and oxygen atom of neighboring  water molecules. Structurally,  both oxygen and  hydrogen atoms  pulls the electon towards themselves.Thus both atoms share   electron by covalent bonding.

However, because oxygen  has a strong positively charged nucleus it pulls the electron more to itself than oxygen. Thus oxygen is partially negative and oxygen is partially positive. This interactions take place among  all the oxygen and hydrogen atoms in water molecules. . The unequal charge distributions is called dipole and the attraction between oxygen and hydrogen is called  hydrogen bonding .

The  orientation of hydrogen and oxygen molecules from dipole -dipole  interactions of hydrogen bonding makes the  oxygen and hydrogen atoms in ice to be pushed apart well spaced out in ice, making them less dense than liquid  water  where they were aggregated.  Thus from the question option C is correct.

4 0
3 years ago
. Luraine, who has blood type o, has a child with blood type B. She claims Will is the
Amiraneli [1.4K]
Blood typing can identify if will is the father or not by the composition of the genotype and it’s compatibility within the parents.

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8 0
3 years ago
The sodium-potassium ion exchange pump_____________.
Dvinal [7]

Answer: option D

The sodium potassium ion exchange move sodium and potassium in opposite direction in electrochemical gradients.

Explanation:

The sodium potassium pump is found in many animals plasma membranes and its moves the sodium and potassium ion in opposite direction across the plasma membrane with the hydrolysis of ATP(adenosine triphosphate) to supply the needed energy. It is an active transport process.

8 0
3 years ago
Give reasons. Cells need energy​
Firdavs [7]

Answer:

#carry on learning

hope it's held

mark me as brainliest

All living cells need energy to function in order for the chemical reactions occurring in the cells to take place. In humans this energy is obtained by breaking down organic molecules such as carbohydrates, fats and proteins.

4 0
2 years ago
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