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Veronika [31]
3 years ago
13

Carbon dioxide and oxygen enter and exit a leaf by diffusion. which structure(s) on a leaf allow(s) this process to happen?

Biology
1 answer:
Montano1993 [528]3 years ago
3 0
The stomata and their guard cells allows this happen.

Stomata is like a hole or gap on a leaf, most of them are present in a bottom side of the leaf, since waxy cuticle is not present over there. And 2 guard cells make up a stomata.

Guard cells are able to control the size of the stomata, depending on the situation. For example, the guard cells close up during day time because a lot of sunlight may cause more water loss.

In conclusion, guard cells and the stomata are the main structures that allow carbon dioxide and oxygen (water too) diffuse in and out of leaves.
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What is the process of converting starch to glycogen
Margarita [4]

Answer:

<u>Hydrolysis</u>

Explanation:

Hydrolysis is a reaction that involves a water molecule being inserted between a disaccharide or polysaccharide, making the glycoside bond that connects the two sugars to break and two monosaccharide molecules are produced. Starch which include long chains of glucose molecules joined together forming a polysaccharide compound.

5 0
3 years ago
You need to quickly determine if any bacteria are growing in your new broth media. The fastest way to check for growth would be
saw5 [17]

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You need to quickly determine if any bacteria are growing in your new broth media. The fastest way to check for growth would be to use: a chemostat.

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4 0
2 years ago
Which of the following molecules is not required for a PCR reaction? View Available Hint(s) Which of the following molecules is
natita [175]

Answer:

A Ligase

B False

C To separate the double‑stranded DNA

Explanation:

The Polymerase Chain Reaction (PCR) is a technique widely used in molecular biology laboratories in order to make millions of copies of a specific sequence of DNA. PCR requires deoxynucleotide triphosphates (dNTPs) to synthesize new copies of the target DNA fragment, a thermostable DNA polymerase that adds nucleotides to new DNA strands, and primers that attach to complementary ends at each DNA strand. PCR has three phases: 1-Denaturation, where the double-stranded DNA molecule is heated to separate it into two single (separated) strands; 2-annealing, where the temperature is lowered in order to allow the primers to attach each DNA strand, and 3- extension, where the temperature is increased (again), and the thermostable DNA polymerase adds the appropriate dNTPs to new DNA strands. In consequence, annealing occurs at the lowest temperature. Moreover, during the denaturation stage, the temperature is increased at 90–95°C  in order to denature the DNA strands into single strands.

5 0
2 years ago
Green olives may be preserved in brine, which is a 20-30% salt solution. How does this method prevent contamination by microorga
vredina [299]

The correct answer is Bacteria can't survive in a hypertonic solution because they lose water.

The 20-30% salt solution is hypertonic as Compared to the bacterial concentration of salt. In this case, the bacteria present in the solution would lose water. Due to excess loss of water, the bacteria would eventually shrink and die. Hence, green olives preserved in the brine would be safe from microbial attack.

7 0
3 years ago
Please help me asap!!!
Bezzdna [24]

Answer:

plants need sunlight. (animals dont)

BOTH, plants and animals need nutrients.

BOTH, plants and animals need oxygen.

BOTH, plants and animals need a suitable temperature.

Plants and animals need water.

BOTH need carbon dioxide

7 0
2 years ago
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