Questions posted in Biology - AssignmentGrade.com

Questions posted in Biology

What are three ways in which geologists use seismographic data?

I am not completely sure, but I believe they use it for:

1. Predicting earthquakes(and finding the center of the earthquake).

2. Mapping faults(a crack in the earth's surface, where earthquakes often occur).

3. Detecting changes along faults(seeing if there has been any movement and etc.).

I hope this helps :)

ANSWERED AT 01/06/2020 - 04:47 PM


QUESTION POSTED AT 01/06/2020 - 04:47 PM

How does the Richter scale measure an earthquake?

Richter's original magnitude scale (ML) was extended to observations of earthquakes of any distance and of focal depths ranging between 0 and 700 km. Because earthquakes excite both body waves, which travel into and through the Earth, and surface waves, which are constrained to follow the natural waveguide of the Earth's uppermost layers, two magnitude scales evolved - the MB and MS scales.

The standard body-wave magnitude formula is

MB = log10(A/T) + Q(D,h) ,

where A is the amplitude of ground motion (in microns); T is the corresponding period (in seconds); and Q(D,h) is a correction factor that is a function of distance, D (degrees), between epicenter and station and focal depth, h (in kilometers), of the earthquake. The standard surface-wave formula is

MS = log10 (A/T) + 1.66 log10 (D) + 3.30 .

There are many variations of these formulas that take into account effects of specific geographic regions so that the final computed magnitude is reasonably consistent with Richter's original definition of ML. Negative magnitude values are permissible.

ANSWERED AT 01/06/2020 - 04:45 PM


QUESTION POSTED AT 01/06/2020 - 04:45 PM

Which statement best compares the role of meiosis in a unicellular and a multicellular organisms? Meiosis is the mechanism used for producing somatic cells in unicellular as well as multicellular organisms. Meiosis is the mechanism used for producing gametes in unicellular organisms and somatic cells in multicellular organisms. Meiosis is the mechanism used for producing gametes in multicellular organisms whereas it does not play any role in unicellular organisms.

Meiosis is the mechanism used for producing gametes in multicellular organisms whereas it does not play any role in unicellular organisms.
Meiosis produces gamete, or sex, cells and occurs only in multicellular organisms.

Mitosis produces somatic, or body, cells and can occur in both multi and uni cellular organisms.

ANSWERED AT 01/06/2020 - 04:44 PM


QUESTION POSTED AT 01/06/2020 - 04:44 PM

Select the term that best completes the following statement: H2O, or water, contains one _____________. A. oxygen atom B. oxygen molecule C. hydrogen atom D. element

A. oxygen atom

H2 O1

There are 2 hydrogen atoms and 1 oxygen atom


ANSWERED AT 01/06/2020 - 04:43 PM


QUESTION POSTED AT 01/06/2020 - 04:43 PM

Which process helps make meiotic cells genetically different and occurs during prophase 1, but not durning prophase 2

Crossing over adds diversity to the cells during meiosis 1

ANSWERED AT 01/06/2020 - 04:42 PM


QUESTION POSTED AT 01/06/2020 - 04:42 PM

What is the soil-like layer on the moon’s surface called? A. maria B. regolith C. basalt D. magma

B is the answer. Hope this helps. :)

ANSWERED AT 01/06/2020 - 04:41 PM


QUESTION POSTED AT 01/06/2020 - 04:41 PM

What do organisms placed in the proposed kingdom Archaezoa lack?

Mitochondria is the answer i believe 

ANSWERED AT 01/06/2020 - 04:37 PM


QUESTION POSTED AT 01/06/2020 - 04:37 PM

What is the biggest organ in the human body?

The largest organ in the human body is the skin.

ANSWERED AT 01/06/2020 - 04:33 PM


QUESTION POSTED AT 01/06/2020 - 04:33 PM

If you remove the biological (etiologic) contamination hazards through destroying microorganisms and their toxins, what mechanism of decontamination did you use?

If microorganisms are killed, and toxins are also destroyed, then a DISINFECTION technique must have been used to decontaminate.
Disinfection process allows the complete killing, or stopping the growth of microorganisms and toxins. 

ANSWERED AT 01/06/2020 - 04:32 PM


QUESTION POSTED AT 01/06/2020 - 04:32 PM

Who organisms are most likely to survive in a population in which disruptive selection is occurring

It is organisms that are the largest and strongest. 

ANSWERED AT 01/06/2020 - 04:32 PM


QUESTION POSTED AT 01/06/2020 - 04:32 PM

A movement in response to touch is referred to as __________.

~Hello there!

Your question: A movement in response to touch is referred to as __________.

Your answer: A movement in response to touch is referred to as thigmotrophism.

Any queries?

Happy Studying.

ANSWERED AT 01/06/2020 - 04:30 PM


QUESTION POSTED AT 01/06/2020 - 04:30 PM

How does a dichotomous key help you identify unknown specimens based on their traits

First lets define what a dichotomous key is.

A dichotomous key is a chart of different physical traits that a species has.

It starts from basic traits and branches out into yes or no questions that make more and more detailed descriptions of the species you are trying to define.

So.. A dichotomous key helps you identify the correct species easily with a couple of yes or no questions.


Good Luck! :)

ANSWERED AT 01/06/2020 - 04:28 PM


QUESTION POSTED AT 01/06/2020 - 04:28 PM

Which situation would an epidemiologist most likely study? a serious disease outbreak that infects hundreds of people a genetic disease that was discovered while researching the human genome the conservation of forests in the Rocky Mountains the legal protection of endangered species in the United States

The correct answer is A. A serious disease outbreak that infects hundreds of people

Explanation:

In science, the epidemiology is a fill that studies diseases especially in terms of the way diseases emerge and then spread in populations or the way diseases become epidemics. This implies, epidemiologists focus on diseases outbreaks rather than on inherited diseases. Moreover, epidemiology plays an important role in preventive health as well as actions to control epidemics. Considering this, it can be concluded an epidemiologist is likely to study " A serious disease outbreak that infects hundreds of people" because epidemiologists focus on the causes, transmission, and outbreaks of epidemics which are diseases that spread in a population.

ANSWERED AT 01/06/2020 - 04:26 PM


QUESTION POSTED AT 01/06/2020 - 04:26 PM

An atom of the element zinc has an atomic number of 30 and a mass number of 65. How many protons does an uncharged zinc atom have? Choose one: 30 35 65 95

I think it has 30 since an atom has no charge

ANSWERED AT 01/06/2020 - 04:26 PM


QUESTION POSTED AT 01/06/2020 - 04:26 PM

True or False: Drowsiness affects your senses, especially your sense of smell.

The answer is false

ANSWERED AT 01/06/2020 - 04:25 PM


QUESTION POSTED AT 01/06/2020 - 04:25 PM

After chromosome are formed during which phase of mitosis do the chromosome attach

After a cell undergoes Prophase, Metaphase is when the chromosomes attach to the spindle fibers in the middle until Anaphase splits them apart.

ANSWERED AT 01/06/2020 - 04:25 PM


QUESTION POSTED AT 01/06/2020 - 04:25 PM

A severe storm has churned up the water and defines the along a coastline , causing the water to appear cloudy. How would this most likely affect the marine ecosystem ?

I think it would have a negative effect because of pollution i think it would end up killing the fish.

ANSWERED AT 01/06/2020 - 04:24 PM


QUESTION POSTED AT 01/06/2020 - 04:24 PM

Why is it important to protect the tropical rainforests today in regard to the future struggle against cancer?

It is important because there is all types of animals you can test medications against the struggle of cancer. Meaning if we destroy the rainforest we no longer have a steady supply of animals to test on.

ANSWERED AT 01/06/2020 - 04:22 PM


QUESTION POSTED AT 01/06/2020 - 04:22 PM

Brad is testing three solutions with litmus paper. After dipping the litmus paper strips in the solutions, he observes two papers turning blue and one turning red. Out of the three solutions, how many are acidic?

Only one solution is acidic. On a normal litmus test, lower pH levels turn red, while higher ones cause the paper to turn blue. The lower the pH, the more acidic the substance is, therefore, the one red solution must be an acid.

ANSWERED AT 01/06/2020 - 04:21 PM


QUESTION POSTED AT 01/06/2020 - 04:21 PM

Hypobromite is used to purify contaminated water. What is the formula for hypobromite? BrO- BrO4- Br2O2- Br2O+

The formula for hypobromite is BrO. 

ANSWERED AT 01/06/2020 - 04:16 PM


QUESTION POSTED AT 01/06/2020 - 04:16 PM

A student identified a wet-mount slide of a microorganism from a pond water sample as a protist. Which observable characteristic would lead to the student's conclusion?

The microorganisms was unicellular and had a well - defined nucleus.

ANSWERED AT 01/06/2020 - 04:15 PM


QUESTION POSTED AT 01/06/2020 - 04:15 PM