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Margarita [4]
3 years ago
7

A physical science textbook has a mass of 3 Kg. What is its weight on Earth

Biology
1 answer:
Sveta_85 [38]3 years ago
5 0

Answer:

Weight = mass * force of gravity

W = 3 * 9.81

Explanation:

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Compounds that speed up the breaking down of food so that nutrients can be absorbed are called:
lys-0071 [83]
They are called ENZYMES.
Enzymes speed up the rate at which the digestion process occur so that the nutrients in the food can be absorbed by the body and used for the development of the body.
6 0
4 years ago
What is the difference between matter, atoms, and elements? Asking for a classmate since she doesn't have a phone :)
serious [3.7K]

Answer:

Matter is mass, Element is matter, and Atom is element.

Explanation:

Matter is anything that has mass or takes up space (Volume). Matter is made of elements. Elements such as carbon dioxide or gold. An atom is the smallest unit of matter. Elements are made of atoms. Atoms are what chemically makes an element. :) Hope she gets her phone!

4 0
3 years ago
In proteins, secondary, tertiary, and quaternary levels of structure depend on the primary structure.
Fittoniya [83]

Answer:b. Amino acid sequence, hydrogen bonding between backbone groups, the overall shape of a single polypeptide, and combinations of tertiary structures.

Explanation: Primary structure is the amino acid sequence in the polypeptide chain. When the sequence is altered due to mutation it can lead to formation of entirely new amino acid sequence.

Secondary structure could be the helical structure or the Beta pleated sheet. It is form from the interaction of atom that are backbones.It is the hydrogen bond between amino Hydrogen and carboxyl oxygen atom in the backbones

Tertiary structure- Overall structure of polypeptide. It result from interaction of the R groups amino acids. It gives the shape of the polypeptide.

Quantenary- Are protein made up of multiple polypeptide chain. This chain are also called subunit. It is the combination of all tertiary structures given rise to a functional protein.

8 0
4 years ago
Read 2 more answers
Pure-breeding sweet peas with purple flowers and round pollen are crossed with pure-breeding sweet peas with red flowers and lon
Anestetic [448]

Answer:

C. 40

Explanation:

Pure-breeding means that the individuals are homozygous for the genes being analyzed.

From Mendel's Law of Dominance we know that the traits that appear in the F1 are the dominant ones.

I will call:

P_ = purple flowers

pp   = red flowers

L_ = long pollen

ll  = round pollen

Initial cross:

P      Pl/Pl    x    pL/pL

F1              Pl/pL

<u>Test cross</u> (cross with a homozygous recessive individual):

Pl/pL   x  pl/pl

<u>Expected progeny:</u>

Pl/pl = Parental (purple flowers, round pollen)

pL/pl = Parental (red flowers, long pollen)

PL/pl = Recombinant (purple flowers, long pollen)

pl/pl = Recombinant (red flowers, round pollen)

20% of the offspring have purple flowers and long pollen (PL/pl).

Every time crossing over happens in the meiosis of the F1 individual, both a <em>PL</em> gamete and a <em>pl</em> gamete form. That means that 20% of the offspring will also be pl/pl, and the total proportion of the offspring that will be recombinants will be 40%.

A distance of 1 map unit corresponds to a recombinant frequency of 1%.

A recombinant frequency of 40% therefore means that 40 map units separate the glower color and pollen shape genes.

5 0
3 years ago
Help my fill this in please! tyy:)
Finger [1]

Answer:

1: sun-->grass-->rabbit-->fox-->hawk

2:ocean/marine ecosystem

biotic: fish, seaweed, plankton

abiotic :water, rocks, sunlight

Explanation:

6 0
3 years ago
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