Answer:
Having a cell membrane ,with pores; that regulates substances entering and leaving the cells;
cytoplasm;contains sugar and salts for maintaining it's osmotic pressure; also has a liquid medium; for all biochemical reactions;
having nucleus; contains chromosomes having heridetary material; and controls all activities of the cells.
I think the parietal cells have canaliculi which secretes it
False.
<span>Radiation is the transfer of heat regardless of the presence of atoms or particles.
</span>There are three types of heat transfer or heat propagation; conduction, convection and radiation. Heat transfer is the process by which heat projects externally however, depending on the temperature and pressure. Also called the movement of heat from a low temperatured state which increases as heat progresses.
Conduction is the heat transfer by contact, immediate contact.
<span>Convection is the transfer of heat through air and water.</span>
Niacin is also known as Vitamin B3. It is needed by the body because it produces the coenzymes NAD and NADP which are responsible for the body's metabolic reactions. If you are deficient of niacin, the body can synthesize it using tryptophan. Food sources of tryptophan include eggs, liver, peanut butter and dairy products.
I believe all of these answers are correct. <span>Proteins
play a key role in cell differentiation. The external environment,
specifically temperature, during the development of turtles and some
other reptiles helps to determine the sex of hatching offspring
Different transcription factors are associated with the differentiation
of stem cells into bone, muscle,
and nerve cells. Transcription
factors bind to regulatory regions of a gene and affect their
expression. The amount of available light or day length helps to
determine the
patterns of gene expression
that lead to flowering in
some plants.
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