Chloroplasts , Biology

Chloroplasts

Like mitochondria, chloroplasts are also distinctive organelles of eucaryotic cell. But they are found only in plant cells. Chloroplasts contain membranes forming a system of thin srs or larnellae stacked on top of each other. These membranes contain the pigment chlorophyll whose function is to trap light energy required to make organic molecules particularly sugars. This process is called photosynthesis. It is worth mentioning that chloroplasts resemble the present day cyanobacteria in size and structural organisation of chlorophyll bearing membranes. Chloroplasts also contain DNA and reproduce by self-replication. In fact a number of present day eucaryotic cells do contain cyanobacteria in them (Figure shown below).

 

1301_cholloroplasts.jpg

Posted Date: 12/10/2012 12:04:51 AM | Location : United States







Related Discussions:- Chloroplasts , Assignment Help, Ask Question on Chloroplasts , Get Answer, Expert's Help, Chloroplasts Discussions

Write discussion on Chloroplasts
Your posts are moderated
Related Questions
Explain the dispersed phase of colloidal system Colloidal systems are not restricted to the dispersion of a solid in liquid.  Each of the three states of matter - gaseous, soli

How many progeny flies are expected to have full wings and gray bodies?

Importance  of nutritional interaction :- Now  being  realized.  Some  nutrients  are antagonistic to each other whereas others act synergistically. Examples of uniquely related

the appendages of arthropods; a. may serve as walking legs, b. may be modified into atennae, c. may be modified into large pincers, or d. all of the above

What are the risk factors for the development of food allergy? Having gone through the discussion above, can you identify at least one important factor leading to food allergy?

Explain sol -gel transformation During sol -gel transformation, a three dimensional network is formed by the interlocking of dispersed particles. The liquid phase is entrapped

The gene is a distinct portion of a cell's DNA. Genes are coded instructions for making all the body needs, mainly proteins. Human beings have about 25,000 genes. Researchers have

Disorders associated with copulation and ejaculation Lack of libido refers to too long “reaction time” to complete absence of sexual desire for females in standing heat. The i

(a) Hormones of the Anterior lobe - The anteriorIobe of the pituitary gland secretes the following hormones, most of them are trophic hormones. (i ) Somatotropic hormone o

Concomitant caroid endarterectomy and CABG :   Symptoimatic or asymptomatic carotid artery disease may be present in patients undergoing CABG. It is very important to recognize thi