A cylinder has a base radius of 7in and a height of 3in. What is its volume in cubic in, to the nearest tenths place?

Plankton are most commonly found in the _______. a. pelagic zone b. littoral zone c. benthic zone d. all of the above please sel

Charra [1.4K]

The pelagic zone is where plankton can be found most frequently.

Plankton is chlorophyll-containing photosynthesizing plants that make their own sustenance from carbon dioxide and sunlight.

They are autotrophic aquatic plants. Their roots have a good aquatic life adaptation.

Thus, the pelagic zone is where plankton is most frequently found.

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8 0

1 year ago

Consider a population of 425 diploid giant Sequoia trees. In this population, you observe the following genotypic counts: 100 ho

Lemur [1.5K]

Answer:

q = 0.42

Explanation:

This question is an example of Hardy-Weinberg question and there are two equations necessary to carry out this question;

p + q = 1

p² + 2pq + q² = 1

where;

p = the frequency of the dominant allele

q = the frequency of the recessive allele

p² = the frequency of individuals with homozygous dominant genotype

2pq = the frequency of individuals with heterozygous genotype

q² = frequency of individuals with the homozygous recessive genotype

Since the total population = 425

q² = $\frac{individuals with recessive genotype}{Total Population}$

= $\frac{75}{425}$

q² = 0.1765

To find q; we need to square root both side to eliminate the square from q².

∴ $\sqrt{q^2}=\sqrt{0.1765}$

q = 0.4201

q = 0.42 (to two decimal places)

4 0

3 years ago

Kelly, who is blind, switches on the fan in her room without anyone's help. she is able to do this because the ________ relays t

Allisa [31]

Kelly, who is blind, switches on the fan in her room without anyone's help. she is able to do this because the Somatic nervous system relays the relevant information to her brain.

<h3>Nervous system :</h3>

According to the classical doctrine of the nervous system, an animal's nervous system is a highly sophisticated component that coordinates its movements and sensory data by sending and receiving signals to and from various regions of its body.

<h3>Somatic nervous system :</h3>

The somatic nervous system, also known as the voluntary nervous system, is the area of the peripheral nervous system responsible for the voluntary control of skeletal muscle movement.

A part of the peripheral nervous system called the somatic nervous system is responsible for the voluntary control of skeletal muscle movement.

<h3>Example somatic nervous system</h3>

The cranial nerves, which transmit information from the brain to the head and neck region, are an illustration of the somatic nervous system. In this area, conscious motor functions are under the control of the somatic nervous system.

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7 0

1 year ago

Write a paragraph on testing probability

VashaNatasha [74]

Explanation:

Probabilities are described as ratios of favorable event outcome to the total number of event outcomes.

This is written as...

$P (E) =\frac{n(E)}{n(S)} \\$

where...

E= the number of times the event occurs

S= the number of trials

In biology experiments, hypotheses are formed based on research questions, and tested with the use of variables to provide a particular outcome. Statistics allows for testing data for consistency with the hypothesis, while statistical probability testing can be used in experiments to determine a range of outcomes, from genetic inheritance, evolutionary rates to theoretical experimental results.

In these statistical models, probability distributions are functions that give probabilities for certain event outcomes within an experiment (a set of trials). These may be either continuous, taking a value within a range of two numbers; or discrete, which may be either of two specified values. Discrete probability distributions list each value that a random variable may possibly take on.

Further Explanation:

For example, two types of probability distributions are employed in experimental biology:

Binomial distributions, which are discrete distributions, provide probability of a certain number of successful events for x a random variable, in a specific number of trials, n; here, the probability of success of an individual trial is constant at P and only one of two outcomes are possible- this is sampling with replacement.

where...

b(x; n, P)-the probability that an experiment of n trials results in x successes

nCx- the number of combinations of n things at r time

$b(x; n, P) = [ nCx ]* P^{x} * (1-P)^{n-x}\\$

<em>This is often used in determining potential outcomes before data collection.</em>

A type of continuous distribution, the student's t-test, compares standard deviations and means from two sets of samples or groups to check for significant differences between them.

$t= \frac{(x_{1} - x_{2}) }{\sqrt{(\frac{(S_{1}) ^{2} }{n1} }+ (\frac{(S_{2}) ^{2} }{n2 }}$

where...

x1 and s1 are the mean and standard deviation of sample 1 respectively
x2 and s2 are the mean and standard deviation of sample 1 respectively
n1 and n2 are sample sizes in samples 1 and 2 respectively

The null and alternate hypotheses typically theorize the likelihood and significance of certain event outcome probabilities. Critical values of t, along with degrees of freedom are used to determine a range of probable outcomes; probability or p- values along with this range, are used to determine whether either hypothesis is rejected or accepted.

<em>For instance, significant differences between an experimental control and a specific treatment group would show that these occurrences are not due to sampling errors or random chance...</em>

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5 0

3 years ago

This type of bond results in the exchange of electrons?

MissTica

An ionic bond results in an exchange or transfer of electrons between the 2 different types of atoms, most likely the metal atom and nonmetal one.

For example the compound NaF is held together by electrostatic forces of positive and negative charges due to the transfer of electrons from the sodium to fluoride atom.

6 0

3 years ago