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Viktor [21]
2 years ago
15

What’s the definition of : Chromosomes? DNA ? Genes ?

Biology
1 answer:
Brrunno [24]2 years ago
6 0

Answer:

A chromosome is a long DNA molecule with part or all of the genetic material of an organism. Most eukaryotic chromosomes include packaging proteins called histones which, aided by chaperone proteins, bind to and condense the DNA molecule to maintain its integrity

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Which characteristic do cows and dogs share?
san4es73 [151]

Answer:

They are both mammals with tails.

Explanation:

Hope this helps!

6 0
2 years ago
Which of the following is an example of an adaptation that allows similar species to live in the same environment?
Andrei [34K]

Answer:

B. Both mussels and barnacles live in the tidal ecosystems.

Explanation:

Mussels are <u>small bivalve molluscs that are adapted to both marine and freshwater ecosystems</u>. Barnacles, on the other hand, <u>are arthropods that are adapted to marine ecosystems. However, both are adapted to shallow and </u><u>tidal</u><u> zones</u>.

Both organisms are small and have the capacity to live in tidal ecosystems where they thrive and play important ecological roles. For instance, barnacles are filtering organisms, which is extremely important for the food chain, and mussels filter out significant amounts of excess nutrients and metals, that is, they make the water more suitable and clean for organisms to live.

As they are both adapted to tidal ecosystems, this would be an example of an adaptation that allows similar species, in this case mussels and barnacles, to live in the same environment.

4 0
3 years ago
Changes on Earth’s surface can happen slowly or at a rapid pace. Identify one example of how Earth’s surface changes slowly and
Pavlova-9 [17]

Answer:

An example of a slow change is erosion and an example of rapid change is an earthquake.

6 0
2 years ago
A fetus has been developing for three months. what will happen next apex
NARA [144]
<span>After the third month of development, lanugo develops on the head (thin, first hair), the muscles and bones are formed an shaped, the mouth movement is possible, the liver and pancreas produce fluid secretions, meconium is made (stool of infant), reproductive organs are developed, but the baby's gender is difficult to distinguish on ultrasound.</span>
6 0
3 years ago
Read 2 more answers
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
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