When orange iodine is exposed to starch it turns blue-black. In an experiment, you placed a cornstarch solution in a small plastic bag. Next, you placed the the bag in a beaker of water containing 10 drops of iodine. If the solution in the plastic bag turned blue-black (Check all that apply)a. the plastic bag was permeable to cornstarch.
b. the plastic bag was permeable to iodine.
c. the iodine moved into the plastic bag.
d. the cornstarch moved into the beaker.
e. the plastic bag was selectively perme

Answers

Answer 1

Answer: More sounds like C than the others

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7. How does the plant lichen quicken the weathering process? *(1 Punto)
They eat the rocks
They create new bacteria that breaks away rocks
They secrete acid that breaks away rocks
They eat the acid in rocks

Answers

Answer:

The correct answer is - They secrete acid that breaks away rocks

Explanation:

Lichen causes chemical weathering to break the rocks quickly which is the excretion of various acids like oxalic acid and many more organic acids that can cause a significant impact on the rock by dissolving minerals.

By breaking the rocks it forms the ground for the plant that will come later in place of the bare rocks by this chemical weathering process. An example of chemical weather is a change of the granite to clay with the help of hydrolysis.

How do plant cells that do not have chlorophyll get food?

Answers

Answer:

All plants cells have chlorophyll so there is no problem

Note the mechanism of absorption (passive or active transport) of the following food breakdown products, and indicate by a check mark whether the absorption would result in their movement into the blood capillaries of the lymphatic capillaries (lacteals).Substance Mechanism of absorption Blood Lymph
Monosaccharides
Fatty acids and glycerol
Amino acids
Water
Ca2+ , Na+ , Ca2+

Answers

Answer:

The absorption of monosaccharides takes place via facilitated and cotransport mechanism and is transported through blood capillaries present in the villi.

The absorption of glycerol and fatty acids takes place through diffusion and the majority of them are transported via lymph capillaries, while some are transported through blood capillaries.

The absorption of amino acids takes place via a cotransport mechanism with sodium ions and is transported through blood capillaries.

The absorption of water takes place by the process of osmosis via diffusion and is transported with the help of blood capillaries.

The absorption of calcium and sodium ions takes place via an active transport mechanism, while the absorption of chlorine takes place via the process of diffusion. The transportation of all these ions takes place with the help of blood capillaries.

Final answer:

Monosaccharides, amino acids and ions are generally absorbed through active transport into the blood capillaries, while fatty acids and glycerol are transported into the lymphatic capillaries. Water is absorbed via osmosis into both the blood and lymph capillaries.

Explanation:

The absorption mechanisms of the various food breakdown products are different and determine whether they move into the blood capillaries or into the lymphatic capillaries. This absorption is either through passive or active transport.

Monosaccharides like glucose are absorbed through active transport into the blood capillaries.
Fatty acids and glycerol are also absorbed into the cells lining the small intestine, they are then reassembled into fats and transported into the lymphatic capillaries.
Amino acids are absorbed through active transport into the blood capillaries.
Water is absorbed mainly via osmosis, a type of passive transport, into both the blood and lymph capillaries.
Ions (Ca2+, Na+, Ca2+) are absorbed through active transport into the blood capillaries.

Learn more about Absorption of Food Breakdown Products here:

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Describe the process of pollination and fertilization in flowering plants?
Please

Answers

Answer:

Pollination is the transfer of pollen from the male part of the flower, known as the anther, to the female part of the flower, known as the stigma. This can occur through a variety of methods, including wind, water, or through the action of animals. Once the pollen lands on the stigma, it begins to grow a tube down through the style of the flower towards the ovary.

Fertilization occurs when the pollen tube reaches the ovary and fertilizes the egg cell inside the ovule. The fertilized egg cell then develops into a seed, while the ovary develops into a fruit. The process of fertilization requires the transfer of genetic information from the male parent to the female parent, which occurs when the sperm cell from the pollen combines with the egg cell in the ovule.

After fertilization, the ovule develops into a seed, which contains the genetic material necessary for the growth and development of a new plant. The fruit, which develops from the ovary, provides protection for the seeds and helps to disperse them away from the parent plant. This process of pollination and fertilization is essential for the reproduction of flowering plants, and allows for genetic diversity and evolution within plant populations.

Whas the complimentey DNA strand for the folloing DNA sequence AATTCGGGGTTT

Answers

Answer:

DNA: TTAAGCCCCAAA

RNA: UUAAGCCCCAAA

Explanation:

A binds with T (Apples on Trees)

C binds with G (Cows eat Grass)

So complementary sequence would be TTAAGCCCCAAA

For RNA sequence:

For RNA:

A binds with U

T binds with A

C binds with G

So RNA complementary will be UUAAGCCCCAAA

Benedict’s solution is an alkaline copper sulfate solution which is used to detect the presence of aldehyde groups. In the presence of Benedict’s solution, the aldehyde group is oxidized and the aqueous blue Cu2+ ion is reduced to a red Cu2O precipitate. Sugars such as glucose, which produce the red precipitate when Benedict’s solution is added, are called reducing sugars because they can reduce Cu2+ to Cu+. Which of the following carbohydrates would give a positive reaction with Benedict’s reagent? a. galactose; b. sorbitol (see below); c. β-ethylglucoside; d. gluconate .

Answers

Answer:

Galactose

Explanation:

Galactose is a sugar with six carbons and one aldehyde group present at the end. The presence of a free aldehyde group in galactose makes it a reducing sugar. Galactose can reduce the Cu2+ of Benedict solution into Cu+ and produce a red precipitate. Sorbitol, β-ethylglucoside, and gluconate do not have aldehyde group to reduce Cu2+ ions and therefore, do not give the positive test with Benedict solution.

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