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Svetllana [295]
2 years ago
13

The incidence of down's syndrome increases with the age of the mother. a. True b. False

Biology
1 answer:
Darina [25.2K]2 years ago
6 0
A) the answer is true
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All the following rely on ATP as a source of energy except
JulsSmile [24]

Answer:

b. diffusion and osmosis across semi-permeable membranes

Explanation:

ATP (adenosine triphosphate) is a high energy carrying molecule in the system of living organisms. It posseses the ability to store and release energy for use by organisms during biochemical activities. However, some processes do not require ATP to occur and are called PASSIVE TRANSPORT while those that require energy (ATP) are called ACTIVE TRANSPORT.

In the above options, the processes listed as follows require ATP to occur:

- The active transport of glucose from the small intestine to the blood

- The movement of the flagella of sperm for motility

- Exocytosis of waste substances across a semi-permeable membrane

However, the diffusion and osmosis across semi-permeable membranes, which is a passive transport does not require ATP.

7 0
3 years ago
Which of the following can upset the balance of an ecosystem?
seropon [69]

Answer:

All of the above.

Explanation:

  • Light and Water both are among the ecological factors .
  • Ecological factors are those components of environment which determine the variation in the chemical and physical nature of different ecosystem.
  • A balanced ecosystem needs to have all its ecological factors in adequate amount.
  • Thus, too much water, too much light, not enough light or not enough water , any of these condition can upset the balance of ecosystem.
5 0
3 years ago
What happens to the bunny population if a friend is never added? What happens when you add a friend
pochemuha

While pet rabbits can survive alone without another bunny living with them, they can get very lonely and sad, as rabbits are naturally herd animals. No matter how much human attention they receive, that does not replace attention from a fellow rabbit friend.

When one rabbit is introduced to another rabbit, they may not always get along. However, they will always be very curious when they first meet, and can become close friends after bonding for a while. Keeping close supervision on bunnies when they first meet, however, is very crucial, as they could get into a fight and hurt each other.

5 0
2 years ago
There is a population of beetles that typically have black wings. A scientist studying these beetles knows that their eggs hatch
ioda

Answer:

A) Black winged beetles have higher fitness than white winged beetles

Explanation:

Because after the white winged beetles have played their eggs they die

7 0
3 years ago
Wertyuiyfdsdfg1wertyklgfdfghjkl
Tanzania [10]

Answer:

♡hi there! ♡

good combo of words and numbers! ʕ •ᴥ•ʔ

hope I could help! have a great day

-madeline

✧・゚: *✧・゚:・゚✧*:・゚✧・゚: *✧・゚:・゚✧*:・゚✧

Explanation:

7 0
2 years ago
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