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mars1129 [50]
3 years ago
6

What is true of stomata? They take in oxygen and release carbon dioxide. They take in water and release carbon dioxide. They tak

e in carbon dioxide and release oxygen. They take in water and release oxygen

Biology
2 answers:
9966 [12]3 years ago
7 0

Answer: They take in carbon dioxide and release carbon oxygen.

Explanation:

Stomata are small pores present over the surface of  the leaves and on some stems. They are responsible for the exchange of gases from the internal environment of the leaves to the external environment. They allow the entry of carbon dioxide from the atmosphere and release out oxygen during the process of photosynthesis.

lorasvet [3.4K]3 years ago
3 0
Answer - They take in C02 (Carbon Dioxide) & Release O2 (Oxygen)

Reasoning - To be able to do Photosynthesis they Plants need C02 which is one of the important components to making Glucose. During that gas exchange they release O2 for C02.

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Your friend Bruce calls in a panic. He has just come from the doctor and been diagnosed with a bacterial infection. The doctor t
Snowcat [4.5K]

Answer:

Answered below

Explanation:

B cells are a type of white blood cells of a subtype called lymphocytes. They confer acquired or adaptive immunity. This means that B lymphocytes responses to infective microbes are from the memories of their previous encounter with the microbes or antigens.

B lymphocytes fight bacteria and viruses by making Y-shaped proteins called antibodies. These antibodies are specific for each pathogen encountered. They identify and lock on to the surface of invading pathogenic cells and mark and present them for destruction by other immune cells.

Oftentimes, these antibodies are enough to fight off most bacterial infections that we have and therefore there's no need for extensive treatment with drugs.

8 0
3 years ago
Read 2 more answers
The Northeast’s rocky and jagged shoreline provides many _____.
Ivanshal [37]
Hello there,

<span>The Northeast’s rocky and jagged shoreline provides many habitats.

Hope this helps you.
Have a great day! (:
</span>
3 0
4 years ago
Which of the following statements regarding Entner-Doudoroff pathway is true?
Sindrei [870]

Answer:

C. ATP is generated

Explanation:

The Entner-Doudoroff pathway is one of the three glycolytic pathways that breakdown glucose into pyruvate. The Entner-Doudoroff pathway is the most common glycolytic pathway in microbes present in the soil such as <em>Rhizobium, Azotobacter,</em> etc.

The Entner-Doudoroff pathway forms glucose 6-phosphate from glucose which in turn is oxidized into 6-phosphogluconate. The 6-phosphogluconate finally forms pyruvate and glyceraldehyde 3-phosphate through a series of reactions. The glyceraldehyde 3-phosphate can enter the Embden-Meyerhof pathway to form one more molecule of pyruvate. During the Entner-Doudoroff pathway, one molecule of ATP and one NADPH are formed along with the formation of one molecule of each pyruvate and glyceraldehyde.

4 0
3 years ago
What is a negative consequence of a mandatory quarantine
suter [353]

Answer:

Quarantine may create heavy psychological, emotional, and financial problems for some people. To be effective, quarantine demands not only that at-risk people be isolated but also that they follow appropriate infection control measures within their place of quarantine.

Explanation:

6 0
3 years ago
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Design an experiment to answer the question, what is the effect of caffeine on the rate of mitosis in frog eggs? Label: hypothes
s2008m [1.1K]

Answer:

Explanation:

Null Hypothesis: Their will be no effect of the caffeine on the mitosis.

Hypothesis: Caffeine will inhibit the SHSY5Y cell division.

Dependent variable: Various concentration of the caffein compound.

Independent Variable: temperatures of the experimental condition. If their will be any effect of the temperature in mitosis then it will also affect the mitosis of control cells.

Experimental design.

Culture SHSY5Y neuronal cell line in the T-75 culture flask in CO2 incubator at 37 degree celsius. Next day, add cells from T-75 flask in the 24 well plate and allow cells to adhere to the well by incubating plate in CO2 incubator at 37 degree celsius. Add the compound caffeine at different concentration (say 1 microgram, 2 microgram, 3 microgram, 4 microgram) and incubate the plate for 24 hour. Determine the mitotic cells by following assay.

Assay to determine mitotic cell.

The reagent succinimidyl ester of carboxyfluorescein diacetate (CFSE) binds to cytoplasmic proteins. it is fluroscent reagent. And when cell divide due to mitosis, cytoplasm will also divide and hence, the protein which stained with the CFSE reagent will also goes in the daughter cell. Then, the fluorescence of the stained cells can be read on the plate reader.

Prepare the graph of the fluorescence values (Y-axis) verses different concentrations of the caffein (X-axis) and determine the slop of curve to know the rate of mitosis.<u> </u>

<u>Following test and control samples will be used for the assay.</u>

1. SHSY5Y cell line with added caffeine. It is test sample.

2. SHSY5Y cell line added with buffer. This important to know behaviour of cells under experimental conditions.

3. SHSY5Y cell line with solvent used to dissolve compound caffeine. It is important to know the toxicity or any effect of solvent on the mitosis.

5 0
3 years ago
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