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atroni [7]
3 years ago
7

A sugar, a phosphate group, and a nitrogen base form the building blocks of which organic compound?

Biology
1 answer:
Zina [86]3 years ago
6 0
Nucleic acids / aka nucleotides
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If a pregnant woman drinks 2-5 alcoholic drinks per day, what effects does this have on the developing baby?
Vanyuwa [196]

Low birth weight, premature birth, miscarriage (fetus dies before the 20th week of pregnancy), birth defects (hearing issues, or heart defect)

3 0
3 years ago
Cyanobacteria are important to the evolution and advancements of other life on earth because they
kompoz [17]

Answer:

Cyanobacteria are microscopic organisms found in all kinds of water. They are single-celled organisms and produce their own food from sunlight via photosynthesis. Cyanobacteria are important to evolution because they developed the oxygen atmosphere we live in by producing waste from cyanobacteria. Plants also evolved from Cyanobacteria.

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3 years ago
PH scale *
kondor19780726 [428]

Answer:

d

Explanation:

measures hydrogen ion concentration

The pH of a solution is a measure of the concentration of hydrogen ions in the solution. A solution with a high number of hydrogen ions is acidic and has a low pH value. A solution with a high number of hydroxide ions is basic and has a high pH value. The pH scale ranges from 0 to 14, with a pH of 7 being neutral.

5 0
2 years ago
Which of the three tests included in McGill’s torso muscular endurance test battery is a timed test involving a static, isometri
tekilochka [14]

Answer:

Trunk flexor endurance test.

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McGill’s torso muscular test is generally used to assess the muscle endurance of the torso muscles that works as a stabilizer. This test generally includes the four major test.

The test that includes the trunk flexor of the endurance test is a timed test that involves the static isometric contraction of the muscles. This test stabilizes the spine til the individual cannot hold the assumed position and the individual exhibits the fatigue.

Thus, the correct answer is option (A).

7 0
3 years ago
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The image shows a magnified view of a leaf's surface with the stomata visible. What’s the significance of these structures in th
Deffense [45]

The correct answer is option (d) They allow the exchange of gases between cells in the leaf and the external environment.

Stomata are the tiny openings present in the epidermis (outer layer of cells) of the leaf. They have a pore which is guarded by the guard cells which controls the opening and closing of the stomata. Air enters and exits through the stomata.

The main funtion of stomata is to facilitate the gaseous exchange. The gas exchange that occurs when the stomata are open helps in the process of photosynthesis. During photosynthesis, carbon dioxide is taken in from the atmosphere and oxygen is released as a by-product of photosynthesis. The glucose produced is converted into the starch and stored in the leaves.

Also, water vapour diffuses through the stomata into the atmosphere by a process called the transpiration.

Thus, stomata are the structures that are mainly involved in the gaseous exchange between the cells of the leaf and the atmosphere.

8 0
3 years ago
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