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valentina_108 [34]
1 year ago
7

What evolutionary development allowed plants to grow tall? see concept 29.3 (page 626)?

Biology
1 answer:
aivan3 [116]1 year ago
4 0
If your choices are the following:
<span>A. rhizoids
B. sporophylls
C.leaves
D.the waxy cuticle
E. lignified vascular tissue

Then the answer is E.</span>
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The process through which professional scientists evaluate the quality of each others’ research is called group counsel. group r
Snezhnost [94]
The process is called peer review. Scientists are obligated to publish their research in scientific journals. The number of publications a scientist has will impact his or her career path and advancement. When a scientist finishes a study, he/she and his/her collaborators will write a manuscript outlining and discussing the results of the study. This manuscript will be sent to a journal for publishing. There are usually several journals publishing within each field, with some more prestigious than others, as indicated by an impact factor. Journals such as Science and Nature have the highest impact factor as they have the greatest readership. The editor of the journal will send the manuscript off to other scientists working in the same field, and will ask them to 'peer review' the manuscript to determine whether the paper deserves publication, whether it requires corrections, or whether is should be rejected outright. Ideally, papers should be rejected because of bad science, and not because the results contradict previous studies or current scientific theory. 
5 0
2 years ago
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Selection harvesting is the process of selecting certain trees for harvest, while leaving some to grow older. This promotes an u
Sonja [21]

Answer: b. Increased nutrient run-off

Explanation:

Nutrient run-off is when an excessive amount of nutrients like Nitrogen and Phosphorous find themselves in bodies of water. This acts as a fertlizers and promotes algae growth.

This algae growth compromises the qualiy of water and depletes the oxygen in the water. This essenfially harms the habitat thus this is noy an ecological benefit.

7 0
2 years ago
In one experiment, scientists raised mice in germ-free conditions so the mice lacked intestinal microbes. The mice were fed a lo
Luba_88 [7]

Answer:

The answers are:

1. initial composition of microbial community (controlled variable)

2. age of the mice (controlled variable)

3. change in body fat (dependent variable)

4. diet (independent variable)

5. weight gain (dependent variable)

6. final composition of the microbial community (controlled variable)

Explanation:

Before I go ahead to explain each of the choices of classification, let us define each of the different types of variable.

1. Independent variable: this is a variable that is under the control of the experimenter. It is made up of the factors that are being tested. In our example, the independent variables is; diet. The aim of the experiment is to study the effect of the type of diet on the mice. The diet can also be varied and assigned at will by the experiment.

2. Dependent variable: a dependent variable is one whose outcome is reliant on the effect of the changes in the independent variable. It is the factor to be measured. In our example, the factors that obey these definitions are; change in body fat and weight gain. these two factors depend on the types of diet taken by the mice, hence they are the factors to be measured.

3. Controlled variable: these are variables that are kept constant throughout the experiment to rule out biases, because they produce the same effect on the dependent variable as the independent variable and must be keep constant or uniform in the test groups. in our example, the factors that are controlled include; initial and final compositions of the microbial communities and the age of the mice, because the microbial composition if not uniform among the groups can cause  biases in how the diets are processed, and the age of the mice also must be uniform to avoid age-related differences in the processing of the diets

8 0
1 year ago
You are a researcher working on a treatment for Hutchinson-Gilford progeria syndrome, an extremely rare genetic disorder that ca
Alexus [3.1K]

Answer:

If predominantly, we can't say of any treatment for progeria, aside from the routine observation of heart and blood vessel (cardiovascular) disease which is important in taking care of the health situation in the affected kids. Treatment relies majorly on the situation and clinical manifestations of the kid. At first, in 1999, the findings of the initial clinical drug trial for kids with an unusual rapid-aging disease, often referred to as Progeria, revealed positive results with a farnesyltransferase inhibitor (FTI), a drug initially designed to treat cancer.

The PATHWAY in gene expression to be TARGETED is progenin formulation---

The Progeria-forming mutation results in the formation of the protein progerin that disrupts the cell activities. Some areas of progerin's toxic impact on the body is due to the formation of a farnesyl group, Â that adheres to the progerin protein aiding it's disruption of the body's cells. FTIs means of action is through inhibition of the adhesion of the farnesyl group to progerin, decreasing the hazardous substances that leads to progerin.

The genetic medicine technique that acts as.an intervention tool gene therapy to regulate the gene that causes the stimulation and formation of the protein progenin.

Escalated cardiovascular disease results in death in the case of Progeria.

It's worthwhile to note that if the basic blood vessels can with time get better as a result of treatment, the treatment shows positive results. Slowing down stroke and aging manifestations will boost the chances of treatment.

5 0
2 years ago
Assume Deb eats three 150-gram bags of potato chips each day. Use the USDA food database to calculate Deb’s calorie consumption
34kurt
I like Pringles, so I chose those.

Calories: 2349
Protein: 20.16
Carbs: 235.08
Fat: 154.48

I sure hope Deb exercises a lot!
7 0
2 years ago
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