Recent questions in Biology

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Antibody diversity is produced by A. V(D)J recombination. B. imprecise end joining during V(D)J recombination. C. somatic hypermutation. D. all of the above.

Tobsecret asked Dec 28, 2024

by Tobsecret

8.2k points

1 answer

1 vote

209k views

The countercurrent mechanism in the nephron creates a highly concentrated interstitial fluid so that urine can be concentrated by the collecting ducts when they are permeable to water. True or False?

AAber asked Dec 28, 2024

by AAber

7.5k points

1 answer

1 vote

64.4k views

An individual heterozygous for cystic fibrosis____. a) Will have children who are all carriers of cystic fibrosis. b) Cannot have children with cystic fibrosis. c) has cystic fibrosis d) is a carrier

Mark Tolley asked Dec 28, 2024

by Mark Tolley

8.4k points

1 answer

1 vote

206k views

What are the two advantages of the portal system in the endocrine system? 1) Increased efficiency of hormone delivery 2) Rapid response to changes in hormone levels 3) Enhanced communication between endocrine

Xavier Lamorlette asked Dec 28, 2024

by Xavier Lamorlette

8.3k points

1 answer

3 votes

4.8k views

After birth, red blood cells are normally made in which of the following locations?

Cliffus asked Dec 28, 2024

by Cliffus

8.3k points

1 answer

5 votes

99.7k views

A gene is 13,066 nucleotides long. This is: a) The number of amino acids it codes for b) The total number of nucleotides in a chromosome c) The length of the coding region only d) The size of the entire

Bruce Alderman asked Dec 28, 2024

by Bruce Alderman

8.5k points

1 answer

1 vote

122k views

A cell goes through cellular respiration and produces ATP which it then uses to move a molecule across the cell membrane. How does the energy in the original glucose molecule change during this process?

Kopischke asked Dec 28, 2024

by Kopischke

8.9k points

1 answer

2 votes

125k views

All the muscle-specific genes required for the specification of skeletal muscle cells can be switched ON by the action of:

Rob Starling asked Dec 28, 2024

by Rob Starling

8.6k points

1 answer

2 votes

117k views

One element is critical to building proteins as well as nucleic acids. What element is that? How does it get into the mix of biomolecule elements?

Penta asked Dec 28, 2024

by Penta

8.1k points

1 answer

3 votes

69.7k views

Both Bio4 and ProChondrix CR have living cells. True or False?

Beginh asked Dec 28, 2024

by Beginh

8.3k points

1 answer

3 votes

35.1k views

What d/c b/n organic& inorganic phosphorous

Slavugan asked Dec 28, 2024

by Slavugan

9.1k points

1 answer

0 votes

199k views

Explain the difference the structure of free and bound ribosomes.

Vulkanino asked Dec 28, 2024

by Vulkanino

7.7k points

1 answer

4 votes

156k views

An equation in which the derivative appears on the left-hand side is referred to as a A) calculation. B) tangential equation. C) differential equation. D) derivative equation.

Fred Barclay asked Dec 28, 2024

by Fred Barclay

7.3k points

1 answer

4 votes

187k views

In the digestive system the transport of the products of hydrolytic enzyme activity across the mucosal layer into the blood or lymph is called _______.

Helloimyourmind asked Dec 28, 2024

by Helloimyourmind

7.6k points

1 answer

0 votes

72.2k views

On a compound microscope, the power that is best for viewing cell organelles is the _____________. a) High power b) Low power c) Medium power d) Oil immersion power

RexE asked Dec 28, 2024

by RexE

8.4k points

1 answer

4 votes

141k views

What is the only bony fish without a bony skeleton ?

MBarton asked Dec 28, 2024

by MBarton

7.9k points

1 answer

1 vote

172k views

Archaea and Bacteria are most similar in terms of their ________. a) Cell wall composition b) DNA replication c) Protein synthesis d) Ribosomal RNA sequence

P Griep asked Dec 28, 2024

by P Griep

8.4k points

1 answer

3 votes

73.5k views

Which of the following is a characteristic of most extant reptiles and most extant mammals? a. Diaphragm b. Conical teeth that are relatively uniform in size c. Keratinized skin d. Ectothermy e. Shelled

Azal asked Dec 28, 2024

by Azal

8.2k points

1 answer

3 votes

31.0k views

Because of their __________ nature, the steroid class of hormones have receptors located ____________. (A) Charged, intracellularly (B) Charged, in the cell membrane (C) Non-polar, intracellularly (D)

Myron Slaw asked Dec 28, 2024

by Myron Slaw

7.5k points

1 answer

5 votes

72.4k views

A periodic more or less regular fluctuation in a biological system; it may or may not have psychological implications

Andrew Joslin asked Dec 28, 2024

by Andrew Joslin

8.3k points

1 answer

3 votes

123k views

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