Biology » Page 193

Biology

Guest

What can be concluded about a tropical storm as it moves away from the equator?

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Biology

Michael George

Can a virus be considered a living thing? Why or why not?

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Biology

Uriah Liu

1. If erythrocytes (RBCs) are incubated in the distilled water (pure water), what will happen to the cell volume of the RBC? Increases, decreases, or remains the same?

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Biology

Dearey

Enzymes are part of chemical or mechanical

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Biology

Chaya Velazquez

New technology, such as more effective irrigation techniques, could benefit society by

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Biology

Guest

Which statement about sister chromatids is true? One sister chromatid is inherited from each parent. Sister chromatids are always in every cell. Sister chromatids are used only for reproduction. Each sister chromatid forms a lobe of a chromosome.

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Biology

Rodrigo Jackson

Select all that apply: Which of the following affect (s) the half-life of a radioactive substance?

A. the type of isotope

B. the temperature of the substance

C. the addition of a catalyst

D. the mass of the substance

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Biology

Beans

Which of the following two statements describe benefits of bio technology in medicine

1. using stem cells to treat disease

2. using antibiotics to treat infection

3. diagnosing genetic diseases

4. producing antibodies such as antitoxins

5. curing diseases such as smallpox

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Biology

Alisa Owens

The ribosomes in eukaryotic cells are larger than the ribosomes in prokaryotic cells. Furthermore, eukaryotic ribosomes are not affected by some chemicals that affect prokaryotic ribosomes, a fact that can be put to good use by microbiologists seeking new antimicrobial drugs. An example of this is the antibiotic erythromycin, which prevents protein synthesis by prokaryotic ribosomes but does not affect eukaryotic ribosomes at all. Thus, erythromycin kills bacteria but does not affect humans or other animals. Using this information, which of the following would be expected and would support the endosymbiont hypothesis? A) Mitochondrial ribosomes will be smaller than prokaryotic ribosomes. B) Mitochondria and chloroplasts will not have ribosomes. C) Mitochondrial ribosomes will be larger than prokaryotic ribosomes. D) The ribosomes in chloroplasts will be sensitive to erythromycin

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Biology

Paola Vega

Excessive use of fertilizers has little impact on aquatic life. Explain.

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Biology

Guest

When conducting an experiment on how stimuli are represented by the firing of neurons, you notice that neurons respond differently to different faces. For example, Arthur's face causes three neurons to fire, with neuron one responding the most and neuron three responding the least. Roger's face causes the same three neurons to fire, with neuron one responding the least and neuron three responding the most. Your results support coding. Group of answer choices

1. specificity

2. population

3. convergence

4. divergence

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Biology

Jordan Russell

Inferring on the Galapagos island, Darwin discovered birds with differently shaped beaks. What might this tell you about the eating habits of birds? Explain.

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Biology

Dylan Cole

Diseases caused by errors during meiosis and why?

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Biology

Easton Waters

Kelly hypothesizes that if she waters a fig tree seedling, it will grow twice as fast as an unwatered seedling. Which of the following steps would compromise her experiment?

1. Plant two fig tree seedlings of the same age

2. Water one of the seedlings three times a week

3. Apply fertilizer to the other seedling three times a week

4. Measure the seedlings growth weekly

5. Report her results

A Step 1

B Step 2

C Step 3

D Step 4

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Biology

Savion Fry

What factor or factors can cause a difference between your observed results and expected results?

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