Which one of these substances acts as a buffer

blood

lemon juice

curd

Which major salivary glands are located outside the oral cavity just inferior to the floor of mouth and have relatively long excretory ducts that open on either side of the lingual frenulum?

Which of the following is a result of natural erosion? a. lost seed germination b. widened valleys c. all of the above d. desert sands

What carries directions from the ribosome to the nucleus?

The first life on Earth, a simple, single-celled prokaryotic bacteria, appeared on life approximately how long ago? A) 4 thousand years B) 4 million years C) 4 billion years D) 4 trillion years

How might society have been most likely impacted if nikola tesla, the inventor of ac technology, had not become a scientist? ddt might have never been used. people's homes might not have been built with electricity.

Over time, a river cut through a field where some mice lived and some birds were nesting. Tell over time why the mice developed into 2 different species, but the birds did not

Using radioactively labeled dna probes in studies of heredity makes it possible for a scientist to

During the first four days after conception, the zygote undergoes rapid cell divisions and becomes multicellular. What is this cell division called?

Which type of reaction does the following chemical equation describe? HCl + NaOH → NaCl + H2O a. neutralization reaction b. metal-acid reaction c. metal-base reaction d. spontaneous reaction

If ATP breakdown (hydrolysis) is inhibited, which of the following types of movement across cell membranes is also inhibited?