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kolezko [41]
3 years ago
8

Can somebody help me with this?

Biology
1 answer:
leonid [27]3 years ago
3 0

Answer:

Elements: H (hydrogen) He (helium) Li (lithium) Be (beryllium) B (boron)

compounds: H2O (water) H2O2 (Hydrogen peroxide) NsHCO3 (baking soda) NaCI (salt)

Element compound or mixture?: 1. Element 2. compound 3. Mixture of elements 4. mixture of compounds 5. mixture of elements and compounds.

Rewrite the sentences:

1. all matter is made up of tiny particles calles atoms and molecules

2. right

3. right

4. compounds are chemically joined together

task 2:

1. i know this is element

2. i know this is compound

3. i know this is mixture

task 3:

In this lesson i have learned that Atoms are in everything and are what makes up most of the stuff on earth. They are tiny molecules that make up me and everything around me. I have also learned that atoms are made up of Elements. Elements are chemical molecules that make up things like the air we breathe. However, when more than one element joins together a compound is formed. Compounds make up more physical things around me such as drinking water and salt for cooking. When many different compounds are joined together a mixture is formed. An example of a mixture can be sand and water.

Explanation:

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A true-breeding plant that produces yellow seeds is crossed with a true-breeding plant that produces green seeds. The F1 plants
nadya68 [22]

Answer:

The phenotypic ratio will be 3:1

Explanation:

As per this question there are two phenotypes for seed color, yellow and green. Both the parents are true breeding that means they are homozygous for this trait. Also, all the F1 plants have yellow seed color which clearly indicates that yellow seed color is a dominant trait while green is recessive trait.

The cross of true breeding plants as mentioned above is depicted as under:

Parents                             YY    x   yy

                                          /   \       /   \

F1 generation                Yy   Yy  Yy   Yy

So, as per the law of dominance because of the presence of Y allele, all these progeny will be yellow in color.

Next, when these F1 plants will be crossed, the result will be as under:

F1 generation                    Yy   x    Yy

                                         /   \         /   \

F2 generation               YY   Yy   Yy   yy

The genotypic ratio of F2 generation is 1:2:1

The phenotypic ratio of F2 generation is 3:1

It simply means that in F2 generation, 3 progeny which have allelic combination YY & Yy will be yellow colored while 1 progeny which has allelic combination yy will have green color.

8 0
3 years ago
Describe the structure of saturated fatty acids! WILL MARK BRAINLIEST!!
garri49 [273]

Answer: A fatty acid in which the hydrocarbon molecules have a hydrogen atom every carbon and thus are fully hydrogenated. Byway of comparison the hydrocarbon molecules of unsaturated fats have two carbons that share double or triple bonds and are therefore not completely saturated with hydrogen atoms.

6 0
3 years ago
Can someone please help with this urgently. <br><br>you don't have to explain, just answer ​
Shalnov [3]

Answer:

B. option A 2 daughter cells

C. option D metaphase

7 0
3 years ago
Read 2 more answers
describe the role of deep fascia in compartmentalizing the segments of the limbs (i.e., arm, forearm, thigh, leg).
Brilliant_brown [7]

The role of deep fascia in compartmentalizing the segments of the limbs is to transmits the load between bones and intermuscular septa.

These compartment are known as osteofascial compartment, these compartment forms by the fascia that enables the means of containing and separating the groups of muscles into relatively well defined spaces that are compartment.

The deep fascia helps to support and protect muscles and other soft tissue structure. Also it provide a barrier against the infection from one skin to another. The fascia is a structure of connective tissue that surrounds muscles, groups of vessels and nerves.

To learn more about connective tissue here

brainly.com/question/17664886

#SPJ4

6 0
1 year ago
PLEASE HELP! (c) Complete the table to represent the relationship between volume and surface area of a spherical structure surro
Anuta_ua [19.1K]

Answer/Explanation:

Recall:

Volume of a sphere = ⁴/3πr³

Surface Area = 4πr²

✔️For radius (r) = 1 mm:

Volume = ⁴/3 × π × 1³ = 4.19 mm³

Surface Area = 4 × π × 1² = 12.57 mm²

Ratio of volume to surface area = 4.19 : 12.57 = 1:3

✔️For radius (r) = 3 mm:

Volume = ⁴/3 × π × 3³ = 113.1 mm³

Surface Area = 4 × π × 3² = 113.1 mm²

Ratio of volume to surface area = 113.1 : 113.1 = 1:1

4 0
3 years ago
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