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Andre45 [30]
3 years ago
13

Which best describes the first organisms on earth?

Biology
1 answer:
iris [78.8K]3 years ago
8 0

Answer:

D. Simple Prokaryotes

Explanation:

Apex*

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Complete the sentence. Electric cars and the _____________ that create(s) the electricity to charge them protects environmental
laiz [17]

Electric cars and the renewable energy that create the electricity to charge

them protects environmental quality.

Renewable energy arise from renewable sources such as sunlight, wind etc

and they are always replenished from time to time. This form of energy

doesn't emit compounds such as greenhouse gases thus helping to protect

environmental quality.

Non renewable energy is mostly gotten from fossil fuels which emits carbon

and other compounds . These compounds pollute and reduces

environmental quality.

Read more on brainly.com/question/79953

4 0
2 years ago
Read 2 more answers
How do you find per capita growth rate over a month?​
Rufina [12.5K]

All you have to do is take the CGR (capita growth rate) percentage you just found and divide it by the number of years, months, etc. The complete formula for annual per capita growth rate is: ((G / N) * 100) / t, where t is the number of years.

4 0
3 years ago
Why is it difficult to find fossilized plants and animals in the same place? a. The animals would have eaten all of the plants c
Nadusha1986 [10]

Answer: the conditions to generate a fossil for an animal is very different from the conditions required for a plant

Explanation:

6 0
3 years ago
A client has been diagnosed with gram-negative pneumonia. Knowing this bacteria has a lipopolysaccharide endotoxin on the outer
agasfer [191]

Answer:

The options

A)Damage to cellular mitochondria

B)Increased ATP levels

C)Activation of the p53 protein

D)Apoptosis

The CORRECT ANSWER IS D

D)Apoptosis

Explanation:

The extrinsic pathway of apoptosis includes extracellular signaling proteins which adhere to cell surface molecules known aa death receptors which in turn activates apoptosis.

The aftermath activates endonucleases prompting division of DNA and ultimately cell death.

Apart from the TNF and Fas ligand, primary signaling molecules also promotes the extrinsic pathway, examples of such are the TNF-related apoptosis-inducing ligand (TRAIL); the cytokineinterleukin-1 (IL-1); and lipopolysaccharide (LPS), the endotoxin located in the outer cell membrane of gram-negative bacteria while the activation of the p53 protein, and decreased ATP levels in the intrinsic pathway results in DNA damage.

6 0
3 years ago
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
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