Answer:1.c 2.d 3. d
Explanation:
The DNA hyperchromic effect can be defined as the absorbance of radiation or light by the nitrogen bases of DNA. This phenomena is effective when the DNA is in single stranded condition. For observing the hyperchormic effect the DNA is required to be denatured at high temperature or by increasing the level of pH.
The two strands of the DNA when get separated the absorbance of the DNA solution also increases. This results due to reduction in the base-base interaction and hence, increases the absorbance of light like UV by the bases.
Phylogenetic tree is the evolutionary tree that shows the inferred evolutionary relationships among various biological species and organisms. <span>Phylogenetic relationship” refers to the relative times in the past that species shared common ancestors.</span>
According to the phylogenetic tree diagram, modern birds are most closely related to an advanced dinosaur.
Answer: The atoms in a gas move at high speed.
The atoms in a gas spread in all directions.
A gas is a state of matter in, which atoms remains in a constant motion, they do not stick together. They are free and can move in all directions. The gas molecules expands to fill the available space. Hence, they can change shape and volume. The gas atoms being in a molecular state moves fast in high speed to break away from each other, to remain in a free state.
Answer:
TP synthesis in glycolysis: substrate-level phosphorylation
Explanation:
-One of the substrates is a molecule derived from the breakdown of glucose
-An enzyme is required in order for the reaction to occur
-A bond must be broken between an organic molecule and phosphate before ATP can form.
Incorrect:
-The phosphate group added to ADP to make ATP comes from free inorganic phosphate ions.
-The enyzmes involved in ATP synthesis must be attached to a membrane to produce ATP.
The little dots collected from under the fern leaves are spores, not seeds. Ferns are different from seed-bearing plants in that ferns in a sexless way through sporophyte generation. Spores dropped from or taken from grown fern leaves have developed prothallium. Each prothallium generates male and female organs in what is called the gametophyte stage. When fertilization of the female gametophyte happens, small fern plants or leaflets start to grow.
