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stiv31 [10]
3 years ago
5

Scientific investigations often lead to the formulation of new scientific questions. The observations Charles Darwin's

Biology
1 answer:
densk [106]3 years ago
5 0

Answer: Can selection in nature also lead to a new species over time?

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A student discovers a mat of green organisms living along the edge of a stream and suspects it is a moss. To confirm that this o
spin [16.1K]

Answer:

He should look out for tiny leaf-like structures which mosses possess but algae does not .

Explanation:

In general, moss looks fibrous, feathered or latticed when viewed up close. Carpets of moss are springy to the touch. When germinating, moss puts up thin stems sometimes with leaves on top and reproductive spores. Algae have no threadlike structures or leaves. Instead, algae spread as a clump of living cells. Because algae usually grow in wet environments, they look like a slimy, wet mass, often green in color. Both moss and algae may appear green or brown depending on species and the dryness of the conditions.

4 0
4 years ago
In the reaction glucose + fructose → sucrose + water, _____ is a reactant and _____ is a product. View Available Hint(s) Hint 1.
elena-s [515]

Answer:

The correct answers are: Glucose, Sucrose.

Explanation:

  • The given question is an example of a Chemical Reaction.
  • A Chemical Reaction can be defined as the process by which two or more substances interact with each other in such a way that a rearrangement of chemical bonds and molecular position occurs in them. This alteration in bonds and molecular position results in the formation of a new substance.
  • In a chemical reaction, the substances which are responsible for interacting with each other are called the Reactants.
  • In a chemical reaction, the new substances those are formed are called the Products.
  • A Chemical Reaction can be represented as follows:

                                W  +   X   →   Y +  Z.

  • Here, W and X are reacting to form Y and Z.
  • So, W and X are the Reactants.
  • Y and Z are the Products.
  • As the Reactants react to form the Products, so the arrow → is represented from the Reactant to the Product.
  • In the given question,

                           glucose + fructose → sucrose + water

  • As arrow → always direct from Reactants to the Products, so the left side of the arrow will be the reactants and the right side of the arrow will be the products.
  • Hence, the Reactants are Glucose and Fructose.
  • The Products are Sucrose and Water.
  • So, Glucose and Fructose undergo chemical reaction to form Sucrose and Water.
5 0
3 years ago
Mendel used single gene (or monohybrid) experiments to describe his law of segregation. He used _______ characters (or dihybrid)
allochka39001 [22]

Answer:

Law of Independent assortment

Explanation:

Gregor Mendel, who was regarded the father of Genetics, discovered principles that governs inheritance in his experiments. He discovered that the alleles of a gene will separate into gametes when he performed a crossed involving a single gene or character like height, pea color etc. He proposed his law of segregation based on this.

However, he considered two characters or genes in his cross, which he called a DIHYBRID cross. He discovered that the alleles of each different gene separates into gametes independently of one another i.e. without one gene influencing the other in each gamete. He called this principle his LAW OF INDEPENDENT ASSORTMENT.

He obtained a 9:3:3:1 phenotypic ratio for the F2 dihybrid offsprings which is only possible if each gamete equally likely contains two alleles of the two different genes in different combinations.

3 0
3 years ago
When dr. farrell was a graduate student, he once made up a ph 8.0 sodium acetate buffer. why would the casual observer to this b
TiliK225 [7]

<span>I think the pKa for acetic acid is about 4.74. Therefore Acetic acid/acetate buffer will work best at 4.74 +/- 1 pH unit and so the pH 8 is far removed from that. Hence it would not buffer at that pH at all.</span>

7 0
4 years ago
The portion of the membrane system in eukaryotic cells that is responsible for the making lipids and breaking down toxic substan
hichkok12 [17]
<span>The answer is smooth endoplasmatic reticulum. Smooth endoplasmic reticulum is involved in the production and metabolism of lipids and in the production of steroid hormones. Also, smooth endoplasmic reticulum converts organic chemicals to water-soluble products and that way detoxifies them.</span>
8 0
3 years ago
Read 2 more answers
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