21. Newton's first law of motion states that an object stays in constant motion unless a(n) ____ force acts on it.

Biology

1 answer:

miv72 [106K]2 years ago

7 0

Answer:

Outside

Explanation:

Newton's First Law of Motion states that a body at rest will remain at rest unless an outside force acts on it, and a body in motion at a constant velocity will remain in motion in a straight line unless acted upon by an outside force. ... Outside forces are sometimes called net forces or unbalanced forces.

You might be interested in

Compare and contrast contour feathers and down feathers

Diano4ka-milaya [45]

Contour: Gives the bird its stream line shape.

Down feathers: Keeps the bird warm.

4 0

3 years ago

Protein synthesis can can be incresed by

noname [10]

Answer:

Multiple sources of protein promote protein synthesis after exercise, but only those with essential amino acids elevate synthesis. ... Ten grams of essential amino acids or twenty-five grams of a complete protein are sufficient to maximally stimulate protein synthesis.

Explanation:

3 0

3 years ago

Read 2 more answers

Describe the chemical components of DNA.

Slav-nsk [51]

DNA is composed of nucleotides, which are composed of three parts:

1. A five carbon carbohydrate (pentose)

Pentose is classified as a monosaccharide (simple carbohydrate), and its molecular formula is represented by $(CH_{2} O)n$ . They are water soluble molecules with sweet taste. Monosaccharides may have from three carbon atoms (trioses) to six (hexoses). In DNA is present pentose (5 carbon atoms)

2. A nitrogenous base

Nitrogenous bases are ring-shaped compounds that contain nitrogen in their molecular structure. They are classified into two groups: purines and pyrimidines

The purine bases are adenine (A) and guanine (G). They are larger and contain more than one ring in their structure,.

The pyrimidines, cytosine (C), uracil (U) and thymine (T), are smaller and composed of a single ring.

3. One or more phosphate groups

A phosphate consists of a trivalent anion that contains one phosphorus atom and four oxygen atoms. Its molecular formula is expressed by $(PO_{4} ^{-3})$ .

3 0

3 years ago

Select all that apply. Enzymes _____. are not required to sustain the life of an organism act as catalysts in chemical reactions

denis23 [38]

Enzymes act as catalysts in Chemical reaction of cells. And they can lower the required activiation energy for reaction in living organisms.

5 0

3 years ago

Read 2 more answers

Lactic acid fermentation and alcoholic fermentation both create what?

tester [92]

Four molecules of ATP are created from both lactic acid fermentation and alcoholic fermentation.

4 0

2 years ago