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3 years ago

I need helps with this assignment im trying to get caught up because its been a weird school year

Biology

1 answer:

Reika [66]3 years ago

8 0

PLEASE MARK ME AS THE BRAINLIEST and good luck on catching up <3

for the first pic, fungi: helps the environment by eating harmful bacteria. They are very important because they decompose wood and other materials that will then lead and go to the atmosphere.

Snail: snails are very important for the food chain because they eat rotting vegetation and fungi. Other animals count on snails so when they perish they can get all the nutrients from them

earthworm: earthworms are very important because they help the soil out .They make tunnels that lead water and air to roots.

Pill bug: They are decomposes which eat decaying plants.

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Two harmful effect of weevils in crop production

jolli1 [7]

Answer: The main function of the rostrum is to bore holes in plants. In these holes, the female lays her eggs. The eggs hatch into larvae, which eat the plant material surrounding them. If this material is a crop plant or seeds used for human food, the weevils may cause serious damage.

<h2>Hopethis helps!! Stay safe and healthy!!</h2>

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3 years ago

In Drosophila, the genes for body coloration and eye size are on different chromosomes. Normal-colored bodies are dominant to eb

Yuri [45]

Answer:

225 flies

Explanation:

Let gene for body colour : A

Let gene for eye type : B

Parent 1 : normal body and normal eyes = AABB

Parent 2: ebony body and eyeless = aabb

F1 : AABB X aabb = AaBb ( all have normal body and normal eye )

F1 progeny is self crossed given that the two genes are on different chromosomes which means they show independent assortment:

AaBb X AaBb =

A_B_ = normal body, normal eyes = 9

aaB_ = ebony body, normal eyes = 3

A_bb = normal body, eyeless = 3

aabb = ebony body, eyeless = 1

Hence the ratio is 9 : 3 : 3 : 1

Out of the 400 flies:

(9/16) * 400 = 225 flies have normal body colour and normal eyes

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3 years ago

Identify the mismatched pair. identify the mismatched pair. carrier proteins — provide transport recognition proteins — identify

Mrac [35]

Answer;

The mismatched pair is;

C) receptor proteins — bind with enzymes

Explanation;

- A receptor protein is a protein molecule that receives chemical signals from outside a cell. When such chemical signals bind to a receptor, they cause some form of cellular/tissue response, e.g. a change in the electrical activity of a cell.

-They are generally trans-membrane proteins, which bind to signaling molecules outside the cell and subsequently transmit the signal through a sequence of molecular switches to internal signaling pathways. There are two types of receptors: internal receptors and cell-surface receptors.

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3 years ago

Can somebody please help me answer this problem it’s totally hard for me!

NemiM [27]

The integumentary system is the skin. Skin protects the inner organs from Bactria. Essentially the skin is a wall protecting against the outside world. It doesn't really release anything but is just there for protection.

Hope this helped!

5 0

3 years ago

When a neuron is at rest, there is a high concentration of _____ ions inside the cell relative to the outside?

BaLLatris [955]

When a neuron is at rest, ................................. of POTASSIUM IONS inside the cell relative to the outside.
When a neuron is resting, the concentration of sodium ions outside the cell is very high compare to the inside of the cell while the inside of the cell has high concentration of potassium compares to outside of the cell.

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3 years ago