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iren2701 [21]
3 years ago
15

Which statement accurately describes the relationship between the brain and addiction?

Biology
1 answer:
Genrish500 [490]3 years ago
7 0
B. The brain reacts to excessive dopamine levels by increasing the number of dopamine receptors.
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What step of the carbon cycle occurs when soil bacteria return carbon dioxide, methane, and other carbon compounds to the atmosp
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4 0
3 years ago
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How can an increase in carbon dioxide affect the temperature of a tropical ecosystem?
VARVARA [1.3K]

Carbon dioxide is normally slightly warmer than oxygen so if there is a sudden increase, it would naturally increase the temperature.

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3 years ago
This tutorial will take you step by step through the question. Individuals with the genotypes Aa Bb CC Dd and Aa bb Cc Dd are cr
Mrac [35]

Answer:

The correct answer is -

a) 1/16

b) 1/64

c) 1/32

Explanation:

According to the law of independent assortment, each allele of a particular gene has equal chances of getting inherited into the gametes.

In a Mendelian cross of Aa x Aa would give;

AA = 1/4,

Aa = 2/4 and

aa = 1/4

The result of the cross between AaBb x AaBb would be 1/16 due to the fact that probability is still the same AA = 1/4, BB = 1/4 therefore, AABB = 1/16 = 1/4× 1/4.

Now based on this crossing the following:

AaBbCCDd x AabbCcDd.

Take each allele as individual

Aa x Aa would give; AA = 1/4, Aa = 2/4 and aa = 1/4

Bb x bb would give; BB = 1/2, bb = 1/2

CC x Cc would give; CC = 1/2, Cc = 1/2

Dd x Dd would give; DD = 1/4, Dd = 2/4 and dd = 1/4

Then the probability of progeny of the following would be:

a) the probability of AaBbCcDd = 2/4 x 1/2 x 1/2 x 2/4 = 1/16

b) the probability of aabbCCdd = 1/4 x 1/2 x 1/2 x 1/4 = 1/64

c) the probability of AabbCcDD = 2/4 x 1/2 x 1/2 x 1/4 = 1/32

6 0
2 years ago
What is the difference between a vascular and a nonvascular plant? In your answer, discuss how water moves in each type of plant
Otrada [13]

Vascular plants have a vascular system while nonvascular plants have NO vascular system.

Explanation:

The vascular system is made of phloem – that transports food- and xylem- that transports water and minerals- in the higher plants. Examples of these higher plants are like trees and shrubs. These plants can take up water and nutrients from the soil and transport them up the plants to the leaves.

Lower plants have no vascular system (avascular). They mainly absorb food and water readily from their environment even through their leaves. This is why these plants are mainly found in humid areas like waterways, like canals. Examples of such lower plats are ferns and mosses.

3 0
3 years ago
I have no idea :) please help !
dsp73
Flowers and pollinating insects are examples of <span>coevolution. </span>
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