Recent questions in Biology

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A lab scientist investigating the effect of caffeine on the brain measures the activity of a rat dosed with caffeine. 5.0 seconds after jumping on an exercise wheel, the rat is running in place at 1.4

Esteban S asked Dec 24, 2024

by Esteban S

8.8k points

1 answer

1 vote

169k views

For a hairpin to form, the DNA must be single-stranded. A) True B) False

Matias asked Dec 24, 2024

by Matias

8.5k points

1 answer

1 vote

7.8k views

Describe how the production of glucose in plants is indirectly dependent on sunlight

Gigatron asked Dec 24, 2024

by Gigatron

8.2k points

1 answer

3 votes

82.8k views

Why didn't any of the rats develop a goiter after thyroxine injection?

Cjmurph asked Dec 24, 2024

by Cjmurph

8.2k points

1 answer

3 votes

4.3k views

Starting with the somatic ovarian cell used as the source of the nucleus in the cloning process, explain how this outcome occurred.

Luke Peavey asked Dec 24, 2024

by Luke Peavey

8.0k points

1 answer

2 votes

53.5k views

Coccidia live where in an animal? A. At the cellular level. B. In the Skin C. In the Brain D. Within the respiratory system.

Vincy asked Dec 24, 2024

by Vincy

7.9k points

1 answer

4 votes

129k views

Which of the following is the best description of active transport? A) A protein pump in the cytosol pumps a molecule up its concentration gradient by binding to it and changing shape. B) A protein pump

Jkrevis asked Dec 24, 2024

by Jkrevis

7.3k points

1 answer

1 vote

102k views

Fertility rates are high in regions where families choose to have more children because early childhood survival is threatened by disease, poverty, and hunger?

Bharath Muppa asked Dec 24, 2024

by Bharath Muppa

8.3k points

1 answer

0 votes

138k views

State two of the main reasons why censorship of the Internet is difficult

Yev Kanivets asked Dec 24, 2024

by Yev Kanivets

7.6k points

1 answer

1 vote

158k views

All of the following are true except? 1) Sigma factor required for both eukaryotic and prokaryotic

Sharathi RB asked Dec 24, 2024

by Sharathi RB

7.3k points

1 answer

5 votes

157k views

Which of the following best describes how natural selection results in bacteria that are antibiotic-resistant? a) Genetic μtations that confer antibiotic resistance are actively sought by bacteria. b)

Akshansh Thakur asked Dec 24, 2024

by Akshansh Thakur

8.2k points

1 answer

4 votes

173k views

Which term best describes the nitrogenous base adenine plus the sugar ribose? A) adenine B) adenosine C) adenosine diphosphate D) adenosine triphosphate E) C followed by A or B

RodolfoAP asked Dec 24, 2024

by RodolfoAP

8.6k points

1 answer

3 votes

70.5k views

The rising phase of the action potential is due to? 1) Na⁺ flow out of the cell and K⁺ flow into the cell 2) K⁺ flow out of the cell only 3) Na⁺ flow out of the cell only 4) K⁺ flow into the cell only

Jeje asked Dec 24, 2024

by Jeje

8.1k points

1 answer

1 vote

164k views

True or false: The 3' poly (A) tail is a long sequence of several hundreds of adenine nucleotides added to the 3' end of the pre-mRNA.

Falguni asked Dec 24, 2024

by Falguni

7.8k points

1 answer

3 votes

116k views

When the concentration of solutes gets too high in our blood, this can be a problem for our cells. What happens to a brain cell with 95? 1) It shrinks 2) It expands 3) It remains the same 4) Cannot be

Nathaniel Wendt asked Dec 24, 2024

by Nathaniel Wendt

7.7k points

1 answer

1 vote

81.6k views

Are the daughter cells produced by Mitosis identical to their parent cells or are they different? Explain your answer.

Beau Crawford asked Dec 24, 2024

by Beau Crawford

8.3k points

1 answer

4 votes

87.5k views

Under normal conditions, the pacemaker of the heart is the ________? 1) sinoatrial (SA) node 2) atrioventricular bundle 3) atrioventricular (AV) node 4) Purkinje fibers 5) bundle of His

Zaczap asked Dec 24, 2024

by Zaczap

8.7k points

1 answer

2 votes

217k views

Chemotaxis A) the squeezing of cells through thelining of capillaries to attack invading microbes B) release prostaglandins and leukotrienes in response to microbes C) the movement of a cell towards or

Karel Kubat asked Dec 24, 2024

by Karel Kubat

8.0k points

1 answer

3 votes

146k views

The envelope of a virus is derived from the host’s a) Nucleus b) Plasma membrane c) Golgi apparatus d) Endoplasmic reticulum

Darrel Miller asked Dec 24, 2024

by Darrel Miller

8.1k points

1 answer

0 votes

174k views

What factors dominate the lower reflectance values of visible light in vegetation?

Anukul Limpanasil asked Dec 24, 2024

by Anukul Limpanasil

8.4k points

1 answer

3 votes

125k views

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