All categories

3 years ago

Please help me !!

Biology

1 answer:

Degger [83]3 years ago

8 0

Answer:

Look below plz :))

Explanation:

1.) In a chemical change, the molecules in the reactants interact to form new substances. In a physical change, like a state change or dissolving, no new substance is formed. Explain that another way to say that no atoms are created or destroyed in a chemical reaction is to say, “Mass is conserved.”

2.) Carbon Dioxide and Water Out: During combustion, the atoms in ethanol and oxygen are rearranged into carbon dioxide and water. The carbon dioxide and water leave the top of the flame.

You might be interested in

Which of the following could be a description of the cytoskeleton in a cell? scaffolding water hose drawbridge of jelly

enot [183]

The main function of Cytoskeleton in a cell is to maintain the basic structure of the cell.

So i think the one that have similar description of a cytoskeleton in a cell would be : Scaffolding

hope this helps

6 0

4 years ago

Complete the Punnett square for the following cross-pollination and give the genotypic and phenotypic ratios: for white (WW) and

hammer [34]

Answer:

Phenotypic ratio= 1:1

Genotypic ratio = 1:1

Explanation:

This is a monohybrid cross involving a single gene that specifies a color phenotype.

According to the question, WW, which is homozygous dominant i.e same allele is white while ww, which is homozygous recessive is black.

Hence a genotype Ww will possess a white phenotype since the W allele will mask the expression of w.

In a cross between a female and male with a a Genotype Ww and ww respectively. The parents alleles will be separated into gametes according to Mendel's law of segregation. (See attached image).

Ww will produce gametes W and w

ww will produce gametes w and w

The four possible offsprings will have Ww (2) and ww (2) genotypes. Hence two of them will be white while two will be black.

Hence, the phenotypic ratio will be 1:1 while the genotypic ratio will also be 1 Ww: 1 ww

3 0

4 years ago

Witch characteristics are always present in all living things

Olin [163]

movement, respiration, sensitivity, growth, reproduction, excretion, and nutrition.

4 0

4 years ago

Read 2 more answers

A red blood cell placed in distilled water will swell and burst due to the movement of Your answer: A.salt from the distilled wa

butalik [34]

Answer:

Explanation:

this answer is not really specific but it should be option c

reason:

salt is not involved and no osmosis occurs

4 0

3 years ago

Which of the following is an effect of a decrease in the surface-area-to-volume ratio of a cell?

Novay_Z [31]

<span>When the surface area to volume ratio of a cell decreases, the amount of area available to pass material to the cell increases. This is because the surface area is now bigger in proportion to the volume. The inverse is true - when volume increases more rapidly than surface area, the area available to pass materials through it to the cell decreases.</span>

7 0

3 years ago