Answer:
primase relaxes the DNA double heliz so that other enzymes can reach the DNA
Explanation:
Answer:
A,
Explanation:
Answer:
Life cycle is my answer
Explanation:
it might be wrong
B. the Sun appears lower in the sky than during other seasons.
D. the Sun rises in the Northeast and sets in the Northwest.
On the northern hemisphere the north is to the left, the Sun rises in the east (far arrow), culminates in the south (to the right) while moving to the right and sets in the west (near arrow). Both rise and set positions are displaced towards the north in summer, and towards the south for the winter track.
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Answer:
its b
Explanation:
because days get shorter in the winter
O helium
hydrogen
Oxygen
Olithium
Answer:
Oxygen
Explanation:
The electrons present in an atom are arranged in shells or orbitals. The electrons are filled into these shells based on their energy levels with those shells closest to the nucleus filled first as they have the lowest energies.
The arrangement of electrons around the nucleus of an atom is known as electronic configuration. The outermost electron shell of an atom is known as a valence shell shell and the electrons found in this shell are known as valence electrons. The electrons usually exist in pairs. The first shell can only contain two electrons; the second shell can contain 8. the electrons are singly filled first before pairing occurs.
The electronic configuration of the atoms of the elements in the option are as follows:
Helium : 1s² ; valence electrons are 2 which are both paired
Hydrogen: 1s¹ ; valence electron is 1
Oxygen : 1s²2s²2p⁴ ; valence electrons are 6 wit two unpaired electrons
Lithium : 1s²2s¹ ; valence electron is 1
Helium has two valence electrons but they are paired as its 1s shell can only contain a maximum of two electrons.
Oxygen has 6 valence electrons. Two of these electrons are paired while the other two are unpaired.
Homologous structures in two species indicate that they share a common ancestor. These structures, although they may serve different functions in adult organisms, have a similar form and the same embryonic origin. They provide key evidence for evolution and development of various species from common ancestors.
The presence of homologous structures in two different species often demonstrates an evolutionary relationship, indicating they share common ancestry. Homologous structures are those that have a similar form or function and share a similar embryonic origin, although they may appear different and perform different functions in the adult organisms. An example of this could be the bone structure in a human arm, cat leg, whale flipper, and bat wing which, despite serving different purposes, all have a similar arrangement of bones.
The presence of such structures suggests that these species have evolved from a common ancestor that had this structure. Over time, as the species evolved and adapted to their specific environments or lifestyles, these structures may have developed different functions. Therefore, homologous structures are key evidence for the theory of evolution and help in developing phylogenetic relationships. They help us understand how different species have evolved and diversified from common ancestral forms.
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Out of the followinggiven choices;
mutation
recombination
differentiation
change
The answer ischange and mutation. When there is a mismatch base pair the mismatch repair mechanismof the polymerase enzyme kicks in. if the mismatch repair is defective, then a mutation will occur at the site of the mismatched base. These mutations can result inchanges in the phenotype of the cell that resultsin disease.
SOS:
The answer is change and mutation!
Hope this helps!