Answer:
The initial step in the formation of an aminoacyl-tRNA is activation of the amino acid by reaction with ATP
Explanation:
In protein synthesis, the first step involves the formation of an aminoacyl-tRNA. This reaction is catalyzed by the the Mg²⁺-dependent enzymes known as aminoacyl t-RNA synthetases and occurs in two steps.
The first step of the reaction of the formation of an aminoacyl-tRNA is the activation of the amino acid by the attachment of an AMP molecule formed from the hydrolysis of ATP to AMP and pyrophosphate. The aminoacyl adenylate intermediate is bound to the enzyme in this initial step. Subsequently, in the second step of the activation of the amino acid, the aminoacyl adenylate intermediate is then transferred to its specific tRNA. The pyrophosphate formed in the first step is hydrolyzed to 2 phosphate molecules by a pyrophosphatase.
The overall reaction step is illustrated below:
Amino acid + tRNA + ATP -----> aminoacyl-tRNA +AMP + 2Pi
Piaget championed the position
called constructivism. Constructivism is a theory on learning, which suggests that
people acquire knowledge from their experiences and together with knowledge
that they already have, construct their own understanding of these things. Piaget's
theory extends over learning theories, teaching methods, and education reform.
Answer:
1. Global warming is the change in the climate of the earth causing it to heat up whereas the greenhouse effect is a naturally occurring phenomena, constantly occurring due to the atmosphere and sunlight.
2. Carbon dioxide absorbs heat radiating from the Earth's surface and re-release it in all directions—including back toward Earth's surface.
3. Decomposition, ocean release and respiration.
Answer: Angiosperms represent approximately 80 percent of all known living green plants. Examples range from the common dandelion to ancient flowers such as magnolias. Angiosperms also make up the vast majority of all plant foods we eat. (Ex. grains, vegetables, and fruits.) The angiosperms are vascular seed plants in which the ovule (egg) is fertilized and develops into a seed in an enclosed hollow ovary The ovary itself is usually enclosed in a flower, that part of the angiospermous plant that contains the male or female reproductive organs or both. fruits are derived from the maturing floral organs of the angiospermous plant and are therefore characteristic of angiosperms.
Explanation: ^
Answer: regulate the thalamus
Explanation:
The hypothalamus does not regulate the function of the thalamus, rather it is found below the thalamus where it helps control appetite or feeding; body temperature; the amount of water in the blood (known as osmo-regulation); and sleep rhythms.
Thus, the hypothalamus does not regulate the thalamus.
