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natali 33 [55]
3 years ago
14

What is active transport?​

Biology
1 answer:
kompoz [17]3 years ago
3 0

Answer:

the movement of ions or molecules across a cell membrane into a region of higher concentration, assisted by enzymes and requiring energy.

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Which of these describes eye color in humans? 1.polygenic 2.multiple allele 3.codominant 4.incomplete dominance
SIZIF [17.4K]

Answer:

"polygenic" Can i have brainliest please

Human skin color is a polygenic trait. That means that it is influenced by many genes. It is known few hundreds of genetic loci that are involved in the determination of skin color.  

3 0
3 years ago
Read 2 more answers
Consider the parts of a polar ecosystem and a desert ecosystem.
g100num [7]

Answer: Abiotic factor for polar: Ice

Abiotic for desert: Sand

Biotic for polar: Polar bears

Biotic for desert: Cacti

The types of factors are different because there are different set conditions for each ecosystem. A cactus is built for it's hot, dry ecosystem. If it were to move to a polar ecosystem it would not survive there. Same for the polar bear. It's built for polar regions. It has white fur to blend with the white ice to help it blend in and it's adapted to swim to get it's food source.

Explanation:

7 0
3 years ago
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The stark contrast between affluent and poor societies in today's world is often called the _______.
topjm [15]
<span>The stark contrast between affluent and poor societies in today's world is often called the,

Wealth Gap</span>
8 0
3 years ago
A C4 plant like corn or sugarcane would not thrive in a cool shady forest because of:________
Alborosie

Answer:

The correct answer is - B. lower environmental availability of CO2

Explanation:

In C4 plants they have developed a mechanism for the CO2 concentrating and leads to the lower environmental availability of CO2 for these plants, C4  to avoid photorespiration.

These plants tend to be found in drier environments with high sunlight levels and not thrive in a cool shady forest due to this mechanism that results in low availability of carbon dioxide.

6 0
3 years ago
Tay-Sachs, which is a recessive lethal disease, results only when individuals possess two copies of the disease-causing allele.
VashaNatasha [74]

Answer:

a. Heterozygous individuals may pass on their copy of the disease-causing allele to offspring.

Explanation:

Tay-Sachs, which is a recessive lethal disease  ---- Let say the recessive lethal diseases is s

∴ it only results when an individual posses two copies of the diseases-causing allele i.e two copies of the disease will be ss.

Now, when two hetrozygous individuals crossed , it is obvious that each can pass on their copy of the disease-causing allele to the offspring.

Let show an illustration for the above statement.

Let the heterozygous individual be Ts, if Ts cross with another Ts;

we will have:

Ts × Ts

         T          s

T        TT        Ts

s        Ts          ss

the offspring are TT,Ts,Ts,ss

We can now see how the Heterozygous individuals pass on their copy of the disease-causing allele to the offspring (Ts).

8 0
3 years ago
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