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Naddika [18.5K]
4 years ago
8

How many chromosomes do down syndrome humans have?

Biology
1 answer:
jok3333 [9.3K]4 years ago
8 0
They have 46, instead of the usual 47.
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Help please!!!!!!!!!
Anestetic [448]

Answer:

B

Explanation:

Simple diffusion does not require energy: facilitated diffusion requires a source of ATP. Simple diffusion can only move material in the direction of a concentration gradient; facilitated diffusion moves materials with and against a concentration gradient.

4 0
4 years ago
What is a scenario for "artificial selection" in biology?
slega [8]

Answer:

Artificial selection, also called "selective breeding”, is where humans select for desirable traits in agricultural products or animals, rather than leaving the species to evolve and change gradually without human interference, like in natural selection.

Explanation:

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8 0
3 years ago
Which of the following do mosses and ferns have in common? Check all that apply:
joja [24]

Answer:

Sporophyte generation; gametophyte generation; sperm cells are transported  by water to egg cells; spore are transported by air.

Explanation:

> Both ferns and mosses have gametophyte generation followed by sporophyte generation.

> Both are spore bearing and the spores are transported by air.

> The sperm finds the egg cell by chemotaxis and require water for movement.

> They require moisture to thrive.

6 0
3 years ago
Read 2 more answers
Plz help on thissssss​
ASHA 777 [7]

Answer:

IV ga bhi ha of A bhi new IV fa obc ve vo BBQ of vo BBQ of BBQ bjp ca ko a ko CQ icici baba icici baba PvP xa ov qJ iv in bhi few IV rrb

Explanation:

bjp CQ no BBQ on ex of ex of vo name PvP CQ on VB ph qr up wo pr to or roo ro pr to or to or to Uriel's go ca wo

5 0
3 years ago
What is the job of a cell's selectively permeable membrane?
Ksju [112]

Answer:

A is the right answer

Explanation:

Selective permeability is a property of cellular membranes that only allows certain molecules to enter or exit the cell. This is important for the cell to maintain its internal order irrespective of the changes to the environment.

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7 0
4 years ago
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