BIOLOGY HIGH SCHOOL

Which hummingbird adaptation is most advantageous for supporting their high metabolism?a. entering torpor
b. long beak and tubular tongue
c. ability to hover
d. migration

Answers

Answer 1
Answer:

The answer is (1.) entering the torpor

The hummingbirds are the tiniest bird in the world but is also the biggest eater. They burn food so fast they often eat up to 3 times their weight. They feed on nectars and insect. When they can’t eat especially on cold temperatures, these birds go in a sleeping state called torpor. A fascinating way to conserve energy.

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A _____ accelerates a chemical reaction in a cell.

________ affects greenhouse gases which creates global warming.A. sulfur dioxide
B. carbon dioxide
C. oxygen
D. nitrogen

Answers

Answer:

B. carbon dioxide is the correct answer.

Explanation:

The greenhouse effect is caused by human activities like cutting the forest and fossil fuel burning, increase the level of carbon dioxide gas(greenhouse gases) and creates global warming.

When the fossil fuel is burned carbon combines with oxygen to form Carbon dioxide and it increases the concentration of greenhouse gases and give rise to global warming.

The Greenhouse gases Carbon dioxide traps the radiating heat from the Earth, this heat is absorbed in the form of infrared radiations and the radiation is emitted which warmer the lower atmosphere and Earth surface,this result in melting of ice sheets, glaciers and warming the ocean

Thus carbon dioxide greenhouse gases which creates global warming.
Carbon Dioxide affects greenhouse gases which creates global warming

Help me the first to answer will get brainiest What organic substance are both of these enzymes digesting ?

Answers

Answer:

if a substance has a pH higher than 7 it is considered to be a

base

if a substance has a pH lower than 7, it is considered to be an

acid

The substance with which an enzyme reacts is its

substrate

hope this helps you!!!!

Explanation:

Which of the following do all cells in a multicellular organism have in common?1. They all express the same genes.

2. They all have the same proteins.

3. They all have the same mRNA.

4. They all have the same DNA.

Answers

The correct answer is (d) They all have the same DNA.

  • All the multicellular organisms have same DNA but the different parts of the body has different gene expression.
  • For example: the same DNA is found in the cells of kidney and liver, but the gene expression for liver results in large number of hepatocytes and the same DNA in the kidney will give rise to nephrons.
  • This proves that all the cells in the multicellular organisms have same DNA but their expression of protein in different cells are different.

Why is the enzyme pectinase added during the manufacture of fruit juices?. . A.The enzyme pectinase speeds up the breakdown of pectin in fruits, producing more juice.. . B.The enzyme pectinase enhances the taste of fruit juices, making them more popular.. . C.The enzyme pectinase speeds up the breakdown of toxins in fruits, producing more juice.

Answers

Answer;

The enzyme pectinase speeds up the breakdown of pectin in fruits, producing more juice.


Explanation;

-Enzyme pectinase speeds up the break down of pectin in plant walls, thus creating more juice.

-Pectinase is an enzyme that catalyzes the breakdown of pectin, a component of the cell wall in fruits such as apples and oranges.

-It is used for multiple purposes during the manufacturing process of our favorite juices.

-It clarifies naturally cloudy juices, improve the aroma, extracts more colors, and is often used in the preparation of berries, tropical fruits, and apples & pears.
the reason why the enzyme pectinase is added during the manufacture of fruit juices is : A. The enzyme pectinase speeds up the breakdown of pectin in fruits, producing more juices

With this, the manufacturer company will get more volume of product from same amount of resource

hope this helps

1. The gametophytes of gymnosperms are found inside reproductive structures called a. flowers.
b. cones.
c.embryos.
d. ovules.
2. In gymnosperms, the female gametophyte develops inside the
a. seed.
b. pollen cone.
c. pollen grains.
d. ovules.
3, Which of the following gymnosperm reproductive structures is haploid?
a. pollen grains
b. seed cone
c. seed
d. cone scale

Answers

Q1. The answer is b. cones.
Reproductive structures of gymnosperms are cones while reproductive structures of angiosperms are flowers. The gametophytes are found in reproductive structures which are called cones in gymnosperms.

Q2. The answer is d. ovules.
The female gametophyte of gymnosperms develops inside the ovules borne on the surface of ovuliferous scale of an ovulate cone while the female gametophyte of angiosperms develops inside the ovules located inside the gynoecium of the flower. 

Q3. The answer is a. pollen grains.
Nevermind if a gymnosperm or an angiosperm, pollen grains are always haploid structures so when they fuse with haploid female gamete, a diploid zygote is formed.

Lesson 12: Seed plants

1.Seed-bearing plants differ from all other plants in that

C.Their gametes do not require water for fertilization to occur.

2. IN seed plants, what is an important difference between gymnosperms and most angiosperms.

3. The gametophytes of gymnosperms are found inside reproductive structures called  

B. Cones  

4. In gymnosperms, the female gametophyte develops inside the

D. Ovules.

5. Which of the following gymnosperm reproductive structures is haploid?

A. Pollen grains  

!100!% Correct Hope its help

Based upon the pH scale, a vegetable with a pH of 5.3 would beA. neutral.
B. ionic.
C. acidic.
D. basic.

Answers

C. acidic   because anything with a pH of less than 7 is acidic
Acidic
My teacher taught me A comes before be so Acid comes before base on the pH scale.
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