D! Because a gas takes its form and volume of its container
The high energy molecule formed at the end of cellular respiration is B. ATP.
Answer:
Steps are given below.
1) Pollen lands on the stigma of the flower.
2) A pollen tube grows down through the style to the ovary.
3) A sperm cell fuses with an egg in the ovule.
Explanation:
First the pollens fall from anther of the male part on the stigma of the female part of the flower. After that, the pollen reached to the ovary through pollen tube. Then the sperm cells of male combine with the egg of female forming a zygote (seed).
Answer:
Vì thế sinh vật nhân thực được phân chia thành 3 nhóm chủ yếu là dị dưỡng (Animalia, Fungi, Protozoa) và 2 nhóm chủ yếu là quang hợp, (Plantae, bao gồm cả tảo đỏ, tảo lục và Chromista.
Answer:
Glutamic acid
Explanation:
Reductive amination is a form of amination that involves the conversion of a carbonyl group to an amine via an intermediate imine. The carbonyl group is most commonly a ketone or an aldehyde. In this reaction, in the presence of enzyme glutamate dehydrogenase, ammonium ion directly combines with alpha-ketoglutaric acid, to form glutamic acid (amino acid) and for this to happen, a reduced coenzyme (NADPH) is required.
The biosynthesis of glutamic acid can be obtianed from the reductive amination of γ-ketoglutaric acid
γ-Ketoglutaric acid is a common precursor in synthesis of glutamic acid. Addition of NADPH and ammonia or alpha amino acid with γ-Ketoglutaric acid produces glutamic acid. Enzymes involved in this reduction amination process are glutamate dehydrogenase and/or transaminase.