BIOLOGY HIGH SCHOOL

Vegetable farmers often plant soybeans every few years. Rotating crops breaks up the life cycles of many insect pests, and the soybean plants provide the soil with nitrogen. Other crop plants need the nitrogen to grow well. A field of soybean seeds has been planted on a farm in Indiana. As soon as the first leaves emerge from the seed, photosynthesis begins. Which substance is the chemical food source for the soybean plants? A. sunlight
B. Glucose
C. Carbon Dioxide
D. Water

Answers

Answer 1
Answer:

The glucose is the chemical food source for the soybean plants. The correct option is B.

What is glucose?

Glucose, also known as dextrose, is a type of carbohydrate known as a simple sugar, this can be found in both plants as well as animals.

The molecular formula for glucose is C_6H_1_2O_6. It is found in fruits and honey and is the most abundant free sugar in the blood of higher animals.

Plants use the sun's energy to convert water and carbon dioxide into glucose, a sugar.

Plants use glucose for energy and to make other substances such as cellulose and starch. Cellulose is used to form the basic cellwalls. Starch is stored as a food source in seeds and other plant parts.

The chemicalsource of food for the soybean plants is glucose as per the given scenario.

Thus, the correct option is B.

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Answer 2
Answer:

Answer:

B. Glucose  This is the correct answer, my daughter just took the test

Explanation:

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Two insect groups vary genetically by two genes. When put together, they were able to reproduce and produce offspring that could also breed. Which best describes this insect population?

Jerome also had blood work done to confirm the MI. The presence of troponin, or cardiac enzymes such as CK-MB, are a positive indicator of an MI. Why is their presence at higher levels in the blood indicative of an MI?a. They are by-products of aerobic metabolism and if they are present in higher amounts in the blood it shows that the myocardium is working harder.
b. They are substrates for aerobic metabolism and if increased in the blood show that the cardiac muscle is not functioning normally.
c. These proteins are normally found inside cardiac muscle cells and if present in the blood indicate damage to the cells.
d. They are by-products of anaerobic metabolism (glycolysis) and if increased indicate that the heart is not receiving oxygen.

Answers

Answer:

c.These proteins are normally found inside cardiac muscle cells and if present in the blood indicate damage to the cells.

Explanation:

  • When there is a decreased blood flow to the heart or if a particular part of the heart stops working then this is known as myocardial infarction (MI) and due to this the heart muscle gets damaged.
  • There are several biomarkers that are used to evaluate the functioning of the heart and these are known as cardiac markers, an example of this is Ck-MB which is an isoform of creatine kinase.
  • The CK-MB isoform is found in the cytosol of the heart muscle cells and it plays a role in causing the movement of high energy phosphates in and out of the mitochondria.
  • If there is a damage to the heart muscle cells which usually occurs following a myocardial infarction CK-MB levels elevates in the blood for a short period of time and this indicates MI.

A student poses the question: How does the presence of dissolved salt affect the freezing point of water? To answer this question, the student set up two conditions. In the first condition, the student added salt to water in a container and referred to this condition as the variable. In the second condition, the student did not add any salt to water in a second container and referred to this condition as the control. The student took both containers and attempted to freeze the water at various temperatures to assess the freezing point. Would this be a valid experiment? A. Yes, because there is more than one variable.
B. Yes, because there is one variable and a control
C. No, because there is not more than one variable
D. No because there is only one variable and a control

Answers

Answer:

The correct answer is option B. yes because there are one variable and a control.

Explanation:

The validity of experiments can be tested by the four components of experiments. These four components are control, dependent variable, independent variable, and constants. All of this basic component is the validity of the experiments.

In this experiment there is the control where experiment is performed within controlled and there is also one variable.

Thus, the correct answer is option B. yes, because there are one variable and a control.

Answer:

The correct answer will be option-B.

Explanation:

A scientific experiment must contain three variables: independent variable (which can be manipulated), dependent variable(which can be tested) and control (which is kept constant).

Experimental samples must be divided into two groups: an experimental group in which variable to be studied is tested and a control group in which the independent variable does not influence the experiment.

In the given question, since experimental design contains variables and the experimental as well as the control group which act as a reference group to the experiment.

Therefore, Option-B is the correct answer.

Crossing over and the separation of duplicated homologous chromosomes in the first division produce genetic variation. true false User: The nuclear envelope disintegrates during _____.
metaphase
prophase
anaphase
telophase

Answers

Question 1. The statement that 'Crossing over and the separation of duplicated homologous chromosomes in the first division produce genetic variation' is true. Crossing over is the exchange of genetic material between homologous chromosomes that occurs during meiosis. As the result, the daughter cells are genetically different from mother cells. It is one of the ways to produce genetic variation. Question 2. The nuclear envelope disintegrates during prophase. This is the process that occurs at the beginning of mitosis. During prophase, the first phase of mitosis, the chromosomes condense and the nuclear envelope disintegrates. At the end of mitosis, the chromosomes will decondense and the nuclear envelope will re-form.
Prophase is the answer

What is the main function of digestion?

Answers

Your "Digestive System" breaks down food into molecules that are then absorbed into your body.
The main function of the digestive system is to convert food to energy and eliminate waste. The human digestive system is made up of several parts like the mouth, esophagus, stomach, small and large intestines, pancreas, liver, gallbladder, rectum and anus.

Suppose that a portion of double-stranded DNA in the middle of a large gene is being transcribed by an RNA polymerase. As the polymerase moves through the sequence of six bases shown in the diagram below, what is the corresponding sequence of bases in the RNA that is produced?a. Diagram of DNA showing a coding strand and a template strand. Coding strand from 3' to 5' reads C C G A G T. Template strand from 5' to 3' reads G G C T C A.
b. Enter the sequence of bases as capital letters with no spaces and no punctuation. Begin with the first base added to the growing RNA strand, and end with the last base added.

Answers

Answer:

CCGAGU

Explanation:

DNA transcription:

DNA transcription is the process through which DNA double helical strand is converted into single stranded RNA molecule.

During transcription two strands of DNA are named differently i.e Template strand and coding strand.

Template strand:

Strand from which RNA is producing is known as template strand while

Coding strand:

The strand which is opposite to the template strand is known as the coding strand. Coding strand is the DNA strand whose nucleotide sequence resembles to the RNA transcript base sequence except thymine which is replaced by uracil.

Correct Answer:

Template strand from 5' to 3' reads GGCTCA. and

In this question CCGAGT is coding strand.

RNA sequence is same as coding sequence except T which is replaced by U so sequence of RNA becomes

CCGAGU

Which statement is an example of the inter- dependence of organisms?(1)Owls hunt at night.
(2)Ants get food from insects and protect insects from predators.
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(4)Crows feed on dead mice.

Answers

its either b or c im not sure
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