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Evgen [1.6K]
3 years ago
14

From which source is it thought that chloroplasts in algae originated

Biology
1 answer:
Mashcka [7]3 years ago
5 0
They are considered to have originated from cyanobacteria through endosymbiosis—when a eukaryotic cell engulfed a photosynthesizing cyanobacterium that became a permanent resident in the cell
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OSMOSIS is a type of ______________ diffusion.
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I think the answer is Passive

7 0
3 years ago
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What is Mitosis and why does it happen?
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Mitosis is nuclear division. During Mitosis, chromosomes that have already been duplicated, attach to spindle fibers that pull a copy of each chromosome to the opposite side of the cell.
Pretty much creating 2 daughter nuclei 
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3 years ago
Which of the following combinations is always true of the nucleotide composition of a sample of DNA?
podryga [215]

Answer:

I'm dead

Explanation:

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8 0
3 years ago
Drugs that affect the central nervous system causing mental or behavioral changes are called:
Arada [10]
Opioid drugs. They disrupt the natural production of norepinephrine and act as central nervous system depressants. Opioids block pain sensations, induce drowsiness, reduce body temperature, and slow heart rate, blood pressure, and respiration functions.
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3 years ago
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Hemoglobin is the protein that transports oxygen in mammals. Different species of mammals have slightly different forms of hemog
slavikrds [6]

Answer:

The correct answer is - 6.8950.61 gm per mole

Explanation:

Given:

One form of hemoglobin is 0.324% Fe by mass

1 hemoglobin = 4 Fe

Solution:

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0.324 % correspond to 223.4 gms

100 % correspond to = 223.4 *100/0.324

= 68950.61 gm

MM of haemoglobin = 68950.61 gms = 6.8 E4 gms

6 0
3 years ago
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