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Nina [5.8K]
3 years ago
14

Which of the biomes'tundra, coniferous forest, temperate broadleaf forest, temperate grassland, savanna, chaparral, desert, trop

ical rainforest'require periodic fires to maintain their existence?
Biology
1 answer:
Yuki888 [10]3 years ago
3 0
The answer is:  "chaparral" .
_____________________________________________
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What components and structures of membrane facilitates unequal distribution of polar and charged molecules on two different side
chubhunter [2.5K]

The <u>Ion Channels of membrane</u> facilitates unequal distribution of polar and charged molecules on two different sides of membrane.

The traveling wave of electrical excitation, known as an action potential/nerve impulse, can carry a message without attenuation from one end of a neuron to the other as speeds as great 100m/sec or more.

The voltage is an electrical potential energy that is caused by the separation of opposite charges, in the case of across membrane.

It is so because a membrane potential arises when, there is a difference in electrical charge on both the sides of a membrane, due to a slight excess in positive ions over negative ones on one side and a slight deficit on the other.

To learn more about ion channel here

brainly.com/question/14274435

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6 0
1 year ago
What are 2 ways in which gametes differ from somatic cells?
tatuchka [14]
Gametes are the cells in human body used for reproduction, such as sperms or eggs, and somatic cells are the other body cells, such as muscle cells, skin cells and all other.

First, they have different number of chromosomes. Gametes have only one set of chromosomes, while somatic cells have a complete 2 set of chromosomes. This is because fertilization requires 2 gametes joining together and this will help maintain the correct amount of chromosomes at last.

Second difference between them is that gametes are products of meiosis, while somatic cells are products from mitosis. Both are types of cell divisions but meiosis produces 4 genetically different cells while mitosis produces 2 genetically indentical daughter cells.
8 0
3 years ago
The average life span of an erythrocyte in the circulation is
Nataliya [291]

approximately 115 days

Human red blood cells (RBC), after differentiating from erythroblasts in the bone marrow, are released into the blood and survive in the circulation for approximately 115 days.

3 0
2 years ago
Please help me. i’m confused and don’t know the answer
Cerrena [4.2K]

Answer: The correct answer is C: decreased use of fossil fuels.

Explanation: The burning of fossil fuels causes the release of CO2 and other harmful substances into the atmosphere. Fossil fuels are fuels that are burnt by power plants and such to generate power.

3 0
3 years ago
For this question, we will utilize a population of Martians that is in Hardy Weinberg Equilibrium. The dominant Martian phenotyp
Brrunno [24]

Answer:

d.0.48

Explanation:

When a population is in Hardy Weinberg equilibrium the <u>genotypic </u>frequencies are:

freq (AA) = p²

freq (Aa) = 2pq

freq (aa) = q²

<em>p</em> is the frequency of the dominant <em>A</em> allele and <em>q</em> is the frequency of the recessive <em>a</em> allele.

In this population of 100 individuals, 84 martians have the dominant phenotype and 16 have the recessive phenotype.

Therefore:

q²=16/100

q² = 0.16

q=√0.16

q = 0.4

And p+q=1, so:

p = 1 - q

p = 1-0.4

p = 0.6

The frequency of heterozygotes is:

freq (Aa) = 2pq = 2 × 0.4 × 0.6

freq (Aa) = 0.48

5 0
3 years ago
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