4,064 Answered Questions for the topic biology

Biology

04/12/20

An acentric fragment is one result of crossing-over between a normal chromosome and a chromosome that has undergone what kind of rearrangements?
(a) paracentric inversion(b) duplication(c) reciprocal translocation(d) pericentric inversion
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Biology

04/12/20

Which type of chromosomal rearrangements is most likely to result in lethality?
(a) inversion(b) duplication(c) deletion(d) translocation
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Biology

04/12/20

What are the four major classes of chromosomal rearrangements?
(a) inversions, duplications, translocations, deletions(b) duplications, reciprocal translocations, nonreciprocal translocations, inversions(c) deletions, inversions, duplications, point... more
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04/11/20

Which of the following is a part of the innate immune system? A.) Natural killer Cells B.) Cytokines C.) Mucus D.) Macrophages E.) All of the above
The Innate Immune system is characteristic of "immune first responders" that have no memory and is important for our body's first line of defense and helping to signal the Adaptive Immunity to... more
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Biology

04/10/20

Biology Question

A cell containing a 3% sucrose solution is placed into a beaker containing a 7% sucrose solution. Assume the cell’s membrane is permeable to water, but not permeable to the sucrose. Where will the... more
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Biology Zoology

04/10/20

Regarding career as a Wildlife Biologist

I have a really important question to ask,I am 22 years passed high school in India with Physics , Chemistry and Mathematics in 2016. Then moved to canada did a diploma in Computer Networking... more
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Biology

04/09/20

Darwin clarified his theory of common descent by stating that it was a theory of "common descent with modification." What does the phrase common descent with modification mean?
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Biology

04/08/20

Need help on my BIO 110L Lab

1.     Evidence from the fossil record shows that evolution has resulted in an increase in the number of apertures (areas where the wall is thinner or softer) in pollen grains.... more
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Biology

04/08/20

Biology Question

Why do plants have two types of chlorophyll instead of just one. How does this benefit them? What would you expect concerning the rate of photosynthesis thesis for a plant that has only one type of... more
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04/07/20

Question about Digestive System
Why is it theoretically impossible to drink a gallon of whole milk in 30 minutes and not vomit? Explain in physiological terms.
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Biology Ap Biology

04/07/20

Why are each of the following important to cellular respiration? ( What role does each one play?) Pyruvate, NADH and ATP synthase. Justify your answer.
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Biology

04/07/20

Explain three example mechanisms of how a cell could increase / decrease the amount of RNA or protein coming from a gene- how does each mechanism work?  
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Biology

04/07/20

Biology genetics
The autosomal dominant gene determines gout. The penetrance of gout is 20% in male and 0% in female. What is the probability that heterozygous parents will have an affected child?
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Biology Genetics

04/06/20

Population genetics
In a certain population, 1 person in 10,000 is albino (an absence of pigment melanin in the cells, AR). Whatfraction of this population is expected to be heterozygous? Do you need to assume the... more
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Biology Ap Biology

04/06/20

What would the complimentary strand for the DNA double helix sequence that follows be and explain your response with detail. 5’-TACGCCT-3
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Biology Science Anatomy Mcat

04/04/20

microbe use to cause damage to host cells
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04/04/20

Microbiology Epidemiology
Microbiology Epidemiology Microbiology Epidemiology Microbiology Epidemiology Microbiology Epidemiology
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04/04/20

I HAVE BIO QUESTIONS I NEED HELP ON!!!
1) What is the purpose of using I2KI when determining amylase activity? 2) How do enzymes speed up reactions? Be brief but specific in your description. 3) How does temperature and pH affect the... more
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Biology

04/03/20

Biology ddddddd
A person starts to eat a hamburger. As she takes a bite and chews, an enzyme called salivary lipase helps to begin the process of fat digestion. Which of these is the BEST description of the role... more
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Biology

04/03/20

The systemic loop carries oxygenated blood to the body from which chamber of the heart? (A) left atrium (B) right atrium (C) left ventricle (D) right ventricle
The descriptions of the pulmonary and systemic loops in which blood is transported to and from the heart and makes it way throughout the body.The correct answer is C.
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04/02/20

What makes an ecosystem?
How are natural (occuring in nature, not "man" or artificially comprised) ecosystems defined? What characteristics make up an ecosystem? What is the purpose/function of an ecosystem, and what... more
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Biology Ap Biology

04/02/20

How are proteins related to nucleus acids ? Are fats made up of a single monomer like proteins ? Justify your answer
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04/02/20

According to the following balanced reaction, how many grams of NO are formed from 388 grams of NO2 if there is plenty of water present? 3 NO2(g) + H2O(l) → 2 HNO3(aq) + NO(g) (Please help Urgent)
Formula: 3 NO2(g) + H2O(l) → 2 HNO3(aq) + NO(g)
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Biology Ap Biology

04/02/20

A gene exists in two alleles, B and b. The frequency of B is 0.7. If a population is in Hardy-Weinberg equilibrium, what percentage of individuals would be Bb?

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04/02/20

Automotive air bags inflate when sodium azide, NaN3, rapidly decomposed into N2 and Na by the following reaction: 2 NaN3 --> 2 Na + 3 N2. In order to fill an air bag, 75.0 grams of N2 must be formed.

Question: How many grams of NaN3 must react to form 75.0 grams of N2.
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