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2 years ago

What novel characteristics are shared by gymnosperms and angiosperms but not by mosses and ferns?

Biology

1 answer:

sergejj [24]2 years ago

3 0

Explanation:

Mosses go through sporophyte and gametophyte stages in their life cycle. ... However, mosses are nonvascular while ferns are vascular. Gymnosperms and angiosperms are both vascular, seed-bearing plants. However, gymnosperms release their seeds in cones (like pinecones) while angiosperms release their seeds through flowers.

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The sternal angleis the least likely part of A. the sternum to fracture in the elderly. B. occurs at the sternoclavicular joint.

Bumek [7]

Sternal angle marks the joint between the sternum and the 2nd rib.

Option E.

<h3>Explanation:</h3>

Sternum is the breast bone which is a dorsi ventrally flattened bone present in thorax of human. It gives the support for the ribs where the ribs join. A sternum has three parts - Manubrium sterni, body of sternum and the xyphoid process.

The sternum has attachments of a total of 10 ribs and clavicle. The clavicle and the first rib joins in the Manubrium sterni, and the 3rd to 10th rib joins in the body of sternum. The 2nd rib joins in a facet which is partly in Manubrium sterni and partly in body of sternum. This place id also called the sternal angle. So the sternal angle marks the joint of 2nd rib to sternum.

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3 years ago

List and describe three factors that affect how quickly enzymes can work to catalyze reactions

Lilit [14]

Answer:

The correct answer is - temperature, pH, substrate concentration.

Explanation:

Various factors affect the rate of enzymatic reaction such as pH, temperature, substrate concentration, availability of activators or inhibitors in the reactions, and enzyme concentration.

Temperature: Temperature affects the rate of the enzyme-catalyzed reactions. Like most of the reactions with an increase in temperature rate of enzymatic reaction also rises up to a maximum level and then declines if the temperature continues to increase as enzyme denatures after a particular temperature.

pH: Similar to the temperature pH also increases the rate of reaction up to a maximum level and then declines the rate as every enzyme acts only at an optimum pH range.

Substrate concentration: If the substrate concentration is increased gradually while the concentration enzyme remains constant, the rate of reaction will increase until it reaches a maximum.

5 0

2 years ago

The behavior of an organism is influenced by both internal and external factors. How might a bear be influenced by external fact

Alexeev081 [22]

Answer:

D. all of these

Explanation:

I just got it right in study island (:

4 0

2 years ago

Read 2 more answers

Whats the biggest mystery about the virus

dsp73

Explanation:

Hey, there!!

According to what i have learned, the biggest mystery about virus is; It acts like both living and non- living beings.

living characters includes :

It reproduce to make more no. of themselves. 
It feeds on various substances.

non- living characters: 

It can be crystallize. 
It dont respire and feed eith it is out from a host body.

Hope it helps...

5 0

3 years ago

How does a DNA molecule control the activities of a cell

Colt1911 [192]

Well there are 4 things in a dna molecule and that is adenine guanine thymine and cytosine well the DNA molecule keeps the cell moving in the right direction and also helps the cell reproduce and stay healthy

4 0

2 years ago