Answer: The DNA double helix is held together by two types of bonds,
covalent and hydrogen.
Explanation: Covalent bonds occur within each linear strand and strongly
bonds the bases, sugar and phosphate groups.
Answer:
DNA: TACCGAATTCGC
mRNA: AUGGCUUAAGCG
RNA: A=U, T=A, G=C
RNA contains Uracil and Thymine is no longer present
Answer: XX
Explanation: Females have two copies of the X chromosome, males have an X and a Y.
Answer:
A sustainable community fulfills the requirement of present generation and also preserve resources for the future generation
Explanation:
Local residents of any community can be made aware to protect the environment and its resources through the following ways
a) Conducting learned tutorials
b) Making informatory presentations and videos
c) Conducting informative exercises
A community becomes sustainable by adopting the following strategies –
a) Making communities environmentally sensitive by making it energy efficient
b) Reducing pollution and promoting tree plantation and maintenance
c) Using renewable resource of energy and reducing pollution
d) Protecting bio diversity
e) Making communities cleaner and safer
f) Adopting environmentally friendly life style
A sustainable community looks like a well-equipped neighborhood that has efficient design and energy management system. It has adequate space for all essential components of a neighborhood and caters the needs of a newly borne child and also an old age person
Answer:
Hydrogen fuel is expensive to produce and transport
