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2 years ago

Draw in 19. protein channel and 20. molecules that would represent a potential concentration gradient active transport.

Biology

1 answer:

AlladinOne [14]2 years ago

3 0

Answer:

Explanation:stop asking questions kid

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How is the Croods related to evolution and natural selection?

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Answer:

monkeys

Explanation:

monkeys and cavemen

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3 years ago

One way to learn more about how healthy brains work is to

pshichka [43]

Answer:

A nerve cell, or neuron, is a cell that receives information from other nerve cells or are sculpted in other ways, for example, to allow one to see patterns. these “acrobats” became very good at the task over a month or so of practice.

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3 years ago

Which structure has functions in both the respiratory system and the digestive system?

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pharynx as it has functions in both the respiratory system and the digestive system.

Explanation:

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3 years ago

Two species of warblers colonize the same island habitat. Both species nest in similar locations and eat the same type of prey.

GuDViN [60]

Answer:

D. Be eliminated

Explanation:

Competition in biology is the process of interaction between two or more organisms, which are using the same resources e.g food, space, mate or occupying the same ecological niche. Competition between organisms often result in one or bother organisms getting harmed due to the strive for a limited resource.

Hence, in the case of two warblers occupying the same habitat and feeding on the same prey, competition is inevitable between these two species of organism. Therefore, the competition will eventually cause one of the species to be eliminated or killed.

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4 years ago

Two insecticides will be compared for their effectiveness in eliminating aphids on tomato plants. Forty tomato plants of the Big

densk [106]

Answer:

The t-test

Explanation:

<em>The researcher should use a t-test to compare the two means and check if they are significantly different from each other.</em>

In using the t-test, both null (H0) and alternate (H1) hypothesis are made such that:

H0: n1 = n2
H1: n1≠ n2

Thereafter, the value of t is calculated and compared to its critical value on the table. The formula for calculating the t goes thus:

$t = \frac{Y_1 - Y_2}{\sqrt{\frac{S_1}{n_1} + \frac{S_2}{n_2} } }$

where, Y1 = mean of population 1, Y2 = mean of population 2, S1 = variance of population 1, S2 = variance of population 2, n1 = number of individuals in population 1 and s2 = number of individuals in population 2.

<em>At the end of the day, if the calculated t value is more than the critical value of t, the H0 is rejected and it shows that the two means are significantly different. Otherwise, the H0 is accepted and this shows that there is not significant difference between the mean of population 1 and that of 2.</em>

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3 years ago