Organisms primarily need nutrients to carry out essential life functions, such as growth, repair, and maintaining biological processes. Nutrients are used to produce energy, build and maintain tissues. Certain organisms can also use nutrients to recycle compounds and carry out nitrogen fixation.
Organisms need nutrients primarily to carry out essential life functions. These functions include growth, repair, and the maintenance of basic biological processes. Essential nutrients, which must be obtained from the diet, are used to produce energy, build and maintain tissues, and regulate bodily processes.
Nutrients such as carbohydrates, proteins, and fats are utilized by cells in a series of metabolic reactions that provide the energy required for these vital functions. Some organisms can also utilize nutrients to recycle chemical compounds and carry out nitrogen fixation. However, these processes are generally specific to certain types of bacteria and plants.
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Reproduction in amoebas involves endocytosis, while reproduction in red algae involves spore formation.
The amoebas have to use endocytosis for photosynthesis while the red algae use pinocytosis during photosynthesis.
Endocytosis is the only way amoebas can bring food into their cells, while red algae can produce food by photosynthesis.
The correct answer is -- Endocytosis is the only way amoebas can bring food into their cells, while red algae can produce food by photosynthesis.
Amoeba is an unicellular organism. It is an heterotroph follows holozoic nutrition. It engulf its food with the help of pesudopodia. engulfing of solid food is called endocytosis, whereas red algae such as Polysiphonia is an autotroph which synthesis its own food by the process of photosynthesis. thus, in red algae endocytosis does not occur.
Answer:
The age of 35 years was established to offer invasive techniques, because at this age the risk of secondary abortion was balanced by the technique and the risk of chromosomal alteration.
Explanation:
The possibility of early diagnosis of fetal anomalies of various kinds (neural defects, chromosomopathies, etc.) has been one of the top concerns of gynecologists and geneticists, for obvious reasons.
Throughout these years, prenatal diagnostic techniques have been developed that allow therapeutic decisions by doctors or viability of pregnancy by parents. These techniques are initially performed with non-invasive methods (biochemical determinations, ultrasound), and if the suspicion is increasing, it is passed to more invasive techniques such as amniocentesis or chorionic villus biopsy.
Given that in the latter there is a risk of loss of pregnancy, it is previously attempted to ensure that the indication is correct, and for this, new biochemical tests and risk calculation systems have been added.
Until recently the criterion for establishing the risk of fetal chromosomal abnormality was the mother's age, since there was a clear relationship between maternal age and chromosomal abnormalities, especially Down. The age of 35 years was established to offer invasive techniques, because at this age the risk of secondary abortion was balanced by the technique and the risk of chromosomal alteration. The problem was that a small number of cases were detected. Therefore, other parameters have been sought that estimate more precisely those subsidiary chaos of early detection.
The estimation of the risk in a given pregnant woman is done by multiplying the risk associated with her age for the specific gestational age.
Currently, most prenatal tests consist of AFP, estriol and human chorionic gonadotropin (hCG), which is the triple test, which is a blood test that assesses the risk in a pregnancy of having a Down syndrome or spina bifida It is not a test that tells us whether or not the fetus has any of these defects. It is a test that tells us the probability of risk of having them. Studies have shown that about 70% of fetuses with Down syndrome can be identified early combining the analysis of the mother's age and the results of the triple test.
the original cell theory.
the germ theory.
plate tectonic theory.
The Ptolemy's theory of the solar system was disproved by the discovery of the new information. The Ptolemy's theory stated that the Earth is at the center of the solar system and all the planets, suns and stars orbited around it while the Earth stayed completely stationary. However, this theory was proven to be false as the sun-centeric model of the solar system better explained various phenomenon, such as the particular movement of the planets.
Hence, the correct answer is 'Ptolemy's theory of the solar system'.